gitlink-forgeplus/public/react/build/static/js/52.fea8bece.chunk.js

webpackJsonp([52,153],{

/***/ 1000:
/***/ (function(module, exports, __webpack_require__) {

var root = __webpack_require__(173);

/** Used to detect overreaching core-js shims. */
var coreJsData = root['__core-js_shared__'];

module.exports = coreJsData;


/***/ }),

/***/ 1001:
/***/ (function(module, exports) {

/**
 * Gets the value at `key` of `object`.
 *
 * @private
 * @param {Object} [object] The object to query.
 * @param {string} key The key of the property to get.
 * @returns {*} Returns the property value.
 */
function getValue(object, key) {
  return object == null ? undefined : object[key];
}

module.exports = getValue;


/***/ }),

/***/ 1002:
/***/ (function(module, exports, __webpack_require__) {

var Hash = __webpack_require__(1003),
    ListCache = __webpack_require__(928),
    Map = __webpack_require__(935);

/**
 * Removes all key-value entries from the map.
 *
 * @private
 * @name clear
 * @memberOf MapCache
 */
function mapCacheClear() {
  this.size = 0;
  this.__data__ = {
    'hash': new Hash,
    'map': new (Map || ListCache),
    'string': new Hash
  };
}

module.exports = mapCacheClear;


/***/ }),

/***/ 1003:
/***/ (function(module, exports, __webpack_require__) {

var hashClear = __webpack_require__(1004),
    hashDelete = __webpack_require__(1005),
    hashGet = __webpack_require__(1006),
    hashHas = __webpack_require__(1007),
    hashSet = __webpack_require__(1008);

/**
 * Creates a hash object.
 *
 * @private
 * @constructor
 * @param {Array} [entries] The key-value pairs to cache.
 */
function Hash(entries) {
  var index = -1,
      length = entries == null ? 0 : entries.length;

  this.clear();
  while (++index < length) {
    var entry = entries[index];
    this.set(entry[0], entry[1]);
  }
}

// Add methods to `Hash`.
Hash.prototype.clear = hashClear;
Hash.prototype['delete'] = hashDelete;
Hash.prototype.get = hashGet;
Hash.prototype.has = hashHas;
Hash.prototype.set = hashSet;

module.exports = Hash;


/***/ }),

/***/ 1004:
/***/ (function(module, exports, __webpack_require__) {

var nativeCreate = __webpack_require__(922);

/**
 * Removes all key-value entries from the hash.
 *
 * @private
 * @name clear
 * @memberOf Hash
 */
function hashClear() {
  this.__data__ = nativeCreate ? nativeCreate(null) : {};
  this.size = 0;
}

module.exports = hashClear;


/***/ }),

/***/ 1005:
/***/ (function(module, exports) {

/**
 * Removes `key` and its value from the hash.
 *
 * @private
 * @name delete
 * @memberOf Hash
 * @param {Object} hash The hash to modify.
 * @param {string} key The key of the value to remove.
 * @returns {boolean} Returns `true` if the entry was removed, else `false`.
 */
function hashDelete(key) {
  var result = this.has(key) && delete this.__data__[key];
  this.size -= result ? 1 : 0;
  return result;
}

module.exports = hashDelete;


/***/ }),

/***/ 1006:
/***/ (function(module, exports, __webpack_require__) {

var nativeCreate = __webpack_require__(922);

/** Used to stand-in for `undefined` hash values. */
var HASH_UNDEFINED = '__lodash_hash_undefined__';

/** Used for built-in method references. */
var objectProto = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty = objectProto.hasOwnProperty;

/**
 * Gets the hash value for `key`.
 *
 * @private
 * @name get
 * @memberOf Hash
 * @param {string} key The key of the value to get.
 * @returns {*} Returns the entry value.
 */
function hashGet(key) {
  var data = this.__data__;
  if (nativeCreate) {
    var result = data[key];
    return result === HASH_UNDEFINED ? undefined : result;
  }
  return hasOwnProperty.call(data, key) ? data[key] : undefined;
}

module.exports = hashGet;


/***/ }),

/***/ 1007:
/***/ (function(module, exports, __webpack_require__) {

var nativeCreate = __webpack_require__(922);

/** Used for built-in method references. */
var objectProto = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty = objectProto.hasOwnProperty;

/**
 * Checks if a hash value for `key` exists.
 *
 * @private
 * @name has
 * @memberOf Hash
 * @param {string} key The key of the entry to check.
 * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
 */
function hashHas(key) {
  var data = this.__data__;
  return nativeCreate ? (data[key] !== undefined) : hasOwnProperty.call(data, key);
}

module.exports = hashHas;


/***/ }),

/***/ 1008:
/***/ (function(module, exports, __webpack_require__) {

var nativeCreate = __webpack_require__(922);

/** Used to stand-in for `undefined` hash values. */
var HASH_UNDEFINED = '__lodash_hash_undefined__';

/**
 * Sets the hash `key` to `value`.
 *
 * @private
 * @name set
 * @memberOf Hash
 * @param {string} key The key of the value to set.
 * @param {*} value The value to set.
 * @returns {Object} Returns the hash instance.
 */
function hashSet(key, value) {
  var data = this.__data__;
  this.size += this.has(key) ? 0 : 1;
  data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;
  return this;
}

module.exports = hashSet;


/***/ }),

/***/ 1009:
/***/ (function(module, exports, __webpack_require__) {

var getMapData = __webpack_require__(923);

/**
 * Removes `key` and its value from the map.
 *
 * @private
 * @name delete
 * @memberOf MapCache
 * @param {string} key The key of the value to remove.
 * @returns {boolean} Returns `true` if the entry was removed, else `false`.
 */
function mapCacheDelete(key) {
  var result = getMapData(this, key)['delete'](key);
  this.size -= result ? 1 : 0;
  return result;
}

module.exports = mapCacheDelete;


/***/ }),

/***/ 1010:
/***/ (function(module, exports) {

/**
 * Checks if `value` is suitable for use as unique object key.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is suitable, else `false`.
 */
function isKeyable(value) {
  var type = typeof value;
  return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')
    ? (value !== '__proto__')
    : (value === null);
}

module.exports = isKeyable;


/***/ }),

/***/ 1011:
/***/ (function(module, exports, __webpack_require__) {

var getMapData = __webpack_require__(923);

/**
 * Gets the map value for `key`.
 *
 * @private
 * @name get
 * @memberOf MapCache
 * @param {string} key The key of the value to get.
 * @returns {*} Returns the entry value.
 */
function mapCacheGet(key) {
  return getMapData(this, key).get(key);
}

module.exports = mapCacheGet;


/***/ }),

/***/ 1012:
/***/ (function(module, exports, __webpack_require__) {

var getMapData = __webpack_require__(923);

/**
 * Checks if a map value for `key` exists.
 *
 * @private
 * @name has
 * @memberOf MapCache
 * @param {string} key The key of the entry to check.
 * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
 */
function mapCacheHas(key) {
  return getMapData(this, key).has(key);
}

module.exports = mapCacheHas;


/***/ }),

/***/ 1013:
/***/ (function(module, exports, __webpack_require__) {

var getMapData = __webpack_require__(923);

/**
 * Sets the map `key` to `value`.
 *
 * @private
 * @name set
 * @memberOf MapCache
 * @param {string} key The key of the value to set.
 * @param {*} value The value to set.
 * @returns {Object} Returns the map cache instance.
 */
function mapCacheSet(key, value) {
  var data = getMapData(this, key),
      size = data.size;

  data.set(key, value);
  this.size += data.size == size ? 0 : 1;
  return this;
}

module.exports = mapCacheSet;


/***/ }),

/***/ 1014:
/***/ (function(module, exports, __webpack_require__) {

var baseGetTag = __webpack_require__(324),
    isObjectLike = __webpack_require__(325);

/** `Object#toString` result references. */
var argsTag = '[object Arguments]';

/**
 * The base implementation of `_.isArguments`.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is an `arguments` object,
 */
function baseIsArguments(value) {
  return isObjectLike(value) && baseGetTag(value) == argsTag;
}

module.exports = baseIsArguments;


/***/ }),

/***/ 1015:
/***/ (function(module, exports, __webpack_require__) {

var memoizeCapped = __webpack_require__(1016);

/** Used to match property names within property paths. */
var rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g;

/** Used to match backslashes in property paths. */
var reEscapeChar = /\\(\\)?/g;

/**
 * Converts `string` to a property path array.
 *
 * @private
 * @param {string} string The string to convert.
 * @returns {Array} Returns the property path array.
 */
var stringToPath = memoizeCapped(function(string) {
  var result = [];
  if (string.charCodeAt(0) === 46 /* . */) {
    result.push('');
  }
  string.replace(rePropName, function(match, number, quote, subString) {
    result.push(quote ? subString.replace(reEscapeChar, '$1') : (number || match));
  });
  return result;
});

module.exports = stringToPath;


/***/ }),

/***/ 1016:
/***/ (function(module, exports, __webpack_require__) {

var memoize = __webpack_require__(1017);

/** Used as the maximum memoize cache size. */
var MAX_MEMOIZE_SIZE = 500;

/**
 * A specialized version of `_.memoize` which clears the memoized function's
 * cache when it exceeds `MAX_MEMOIZE_SIZE`.
 *
 * @private
 * @param {Function} func The function to have its output memoized.
 * @returns {Function} Returns the new memoized function.
 */
function memoizeCapped(func) {
  var result = memoize(func, function(key) {
    if (cache.size === MAX_MEMOIZE_SIZE) {
      cache.clear();
    }
    return key;
  });

  var cache = result.cache;
  return result;
}

module.exports = memoizeCapped;


/***/ }),

/***/ 1017:
/***/ (function(module, exports, __webpack_require__) {

var MapCache = __webpack_require__(936);

/** Error message constants. */
var FUNC_ERROR_TEXT = 'Expected a function';

/**
 * Creates a function that memoizes the result of `func`. If `resolver` is
 * provided, it determines the cache key for storing the result based on the
 * arguments provided to the memoized function. By default, the first argument
 * provided to the memoized function is used as the map cache key. The `func`
 * is invoked with the `this` binding of the memoized function.
 *
 * **Note:** The cache is exposed as the `cache` property on the memoized
 * function. Its creation may be customized by replacing the `_.memoize.Cache`
 * constructor with one whose instances implement the
 * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object)
 * method interface of `clear`, `delete`, `get`, `has`, and `set`.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Function
 * @param {Function} func The function to have its output memoized.
 * @param {Function} [resolver] The function to resolve the cache key.
 * @returns {Function} Returns the new memoized function.
 * @example
 *
 * var object = { 'a': 1, 'b': 2 };
 * var other = { 'c': 3, 'd': 4 };
 *
 * var values = _.memoize(_.values);
 * values(object);
 * // => [1, 2]
 *
 * values(other);
 * // => [3, 4]
 *
 * object.a = 2;
 * values(object);
 * // => [1, 2]
 *
 * // Modify the result cache.
 * values.cache.set(object, ['a', 'b']);
 * values(object);
 * // => ['a', 'b']
 *
 * // Replace `_.memoize.Cache`.
 * _.memoize.Cache = WeakMap;
 */
function memoize(func, resolver) {
  if (typeof func != 'function' || (resolver != null && typeof resolver != 'function')) {
    throw new TypeError(FUNC_ERROR_TEXT);
  }
  var memoized = function() {
    var args = arguments,
        key = resolver ? resolver.apply(this, args) : args[0],
        cache = memoized.cache;

    if (cache.has(key)) {
      return cache.get(key);
    }
    var result = func.apply(this, args);
    memoized.cache = cache.set(key, result) || cache;
    return result;
  };
  memoized.cache = new (memoize.Cache || MapCache);
  return memoized;
}

// Expose `MapCache`.
memoize.Cache = MapCache;

module.exports = memoize;


/***/ }),

/***/ 1035:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (typeof call === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _get(target, property, receiver) { if (typeof Reflect !== "undefined" && Reflect.get) { _get = Reflect.get; } else { _get = function _get(target, property, receiver) { var base = _superPropBase(target, property); if (!base) return; var desc = Object.getOwnPropertyDescriptor(base, property); if (desc.get) { return desc.get.call(receiver); } return desc.value; }; } return _get(target, property, receiver || target); }

function _superPropBase(object, property) { while (!Object.prototype.hasOwnProperty.call(object, property)) { object = _getPrototypeOf(object); if (object === null) break; } return object; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var enhancer = function enhancer(WrappedComponent) {
  return (
    /*#__PURE__*/
    function (_WrappedComponent) {
      _inherits(Progress, _WrappedComponent);

      function Progress() {
        _classCallCheck(this, Progress);

        return _possibleConstructorReturn(this, _getPrototypeOf(Progress).apply(this, arguments));
      }

      _createClass(Progress, [{
        key: "componentDidUpdate",
        value: function componentDidUpdate() {
          var _this = this;

          var now = Date.now();
          var updated = false;
          Object.keys(this.paths).forEach(function (key) {
            var path = _this.paths[key];

            if (!path) {
              return;
            }

            updated = true;
            var pathStyle = path.style;
            pathStyle.transitionDuration = '.3s, .3s, .3s, .06s';

            if (_this.prevTimeStamp && now - _this.prevTimeStamp < 100) {
              pathStyle.transitionDuration = '0s, 0s';
            }
          });

          if (updated) {
            this.prevTimeStamp = Date.now();
          }
        }
      }, {
        key: "render",
        value: function render() {
          return _get(_getPrototypeOf(Progress.prototype), "render", this).call(this);
        }
      }]);

      return Progress;
    }(WrappedComponent)
  );
};

/* harmony default export */ __webpack_exports__["a"] = (enhancer);

/***/ }),

/***/ 1036:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "a", function() { return defaultProps; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "b", function() { return propTypes; });
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_prop_types__ = __webpack_require__(1);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_prop_types___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_0_prop_types__);

var defaultProps = {
  className: '',
  percent: 0,
  prefixCls: 'rc-progress',
  strokeColor: '#2db7f5',
  strokeLinecap: 'round',
  strokeWidth: 1,
  style: {},
  trailColor: '#D9D9D9',
  trailWidth: 1
};
var mixedType = __WEBPACK_IMPORTED_MODULE_0_prop_types___default.a.oneOfType([__WEBPACK_IMPORTED_MODULE_0_prop_types___default.a.number, __WEBPACK_IMPORTED_MODULE_0_prop_types___default.a.string]);
var propTypes = {
  className: __WEBPACK_IMPORTED_MODULE_0_prop_types___default.a.string,
  percent: __WEBPACK_IMPORTED_MODULE_0_prop_types___default.a.oneOfType([mixedType, __WEBPACK_IMPORTED_MODULE_0_prop_types___default.a.arrayOf(mixedType)]),
  prefixCls: __WEBPACK_IMPORTED_MODULE_0_prop_types___default.a.string,
  strokeColor: __WEBPACK_IMPORTED_MODULE_0_prop_types___default.a.oneOfType([__WEBPACK_IMPORTED_MODULE_0_prop_types___default.a.string, __WEBPACK_IMPORTED_MODULE_0_prop_types___default.a.arrayOf(__WEBPACK_IMPORTED_MODULE_0_prop_types___default.a.oneOfType([__WEBPACK_IMPORTED_MODULE_0_prop_types___default.a.string, __WEBPACK_IMPORTED_MODULE_0_prop_types___default.a.object])), __WEBPACK_IMPORTED_MODULE_0_prop_types___default.a.object]),
  strokeLinecap: __WEBPACK_IMPORTED_MODULE_0_prop_types___default.a.oneOf(['butt', 'round', 'square']),
  strokeWidth: mixedType,
  style: __WEBPACK_IMPORTED_MODULE_0_prop_types___default.a.object,
  trailColor: __WEBPACK_IMPORTED_MODULE_0_prop_types___default.a.string,
  trailWidth: mixedType
};

/***/ }),

/***/ 1090:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;

var React = _interopRequireWildcard(__webpack_require__(0));

var _reactLifecyclesCompat = __webpack_require__(7);

var _rcUpload = _interopRequireDefault(__webpack_require__(1183));

var _classnames = _interopRequireDefault(__webpack_require__(3));

var _uniqBy = _interopRequireDefault(__webpack_require__(1190));

var _findIndex = _interopRequireDefault(__webpack_require__(1242));

var _UploadList = _interopRequireDefault(__webpack_require__(1243));

var _utils = __webpack_require__(1105);

var _LocaleReceiver = _interopRequireDefault(__webpack_require__(72));

var _default2 = _interopRequireDefault(__webpack_require__(186));

var _configProvider = __webpack_require__(14);

var _warning = _interopRequireDefault(__webpack_require__(43));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function _getRequireWildcardCache() { return cache; }; return cache; }

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== "object" && typeof obj !== "function") { return { "default": obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj["default"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }

function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var Upload =
/*#__PURE__*/
function (_React$Component) {
  _inherits(Upload, _React$Component);

  function Upload(props) {
    var _this;

    _classCallCheck(this, Upload);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(Upload).call(this, props));

    _this.saveUpload = function (node) {
      _this.upload = node;
    };

    _this.onStart = function (file) {
      var fileList = _this.state.fileList;
      var targetItem = (0, _utils.fileToObject)(file);
      targetItem.status = 'uploading';
      var nextFileList = fileList.concat();
      var fileIndex = (0, _findIndex["default"])(nextFileList, function (_ref) {
        var uid = _ref.uid;
        return uid === targetItem.uid;
      });

      if (fileIndex === -1) {
        nextFileList.push(targetItem);
      } else {
        nextFileList[fileIndex] = targetItem;
      }

      _this.onChange({
        file: targetItem,
        fileList: nextFileList
      }); // fix ie progress


      if (!window.File || Object({"NODE_ENV":"production","PUBLIC_URL":"/react/build/."}).TEST_IE) {
        _this.autoUpdateProgress(0, targetItem);
      }
    };

    _this.onSuccess = function (response, file, xhr) {
      _this.clearProgressTimer();

      try {
        if (typeof response === 'string') {
          response = JSON.parse(response);
        }
      } catch (e) {
        /* do nothing */
      }

      var fileList = _this.state.fileList;
      var targetItem = (0, _utils.getFileItem)(file, fileList); // removed

      if (!targetItem) {
        return;
      }

      targetItem.status = 'done';
      targetItem.response = response;
      targetItem.xhr = xhr;

      _this.onChange({
        file: _extends({}, targetItem),
        fileList: fileList
      });
    };

    _this.onProgress = function (e, file) {
      var fileList = _this.state.fileList;
      var targetItem = (0, _utils.getFileItem)(file, fileList); // removed

      if (!targetItem) {
        return;
      }

      targetItem.percent = e.percent;

      _this.onChange({
        event: e,
        file: _extends({}, targetItem),
        fileList: fileList
      });
    };

    _this.onError = function (error, response, file) {
      _this.clearProgressTimer();

      var fileList = _this.state.fileList;
      var targetItem = (0, _utils.getFileItem)(file, fileList); // removed

      if (!targetItem) {
        return;
      }

      targetItem.error = error;
      targetItem.response = response;
      targetItem.status = 'error';

      _this.onChange({
        file: _extends({}, targetItem),
        fileList: fileList
      });
    };

    _this.handleRemove = function (file) {
      var onRemove = _this.props.onRemove;
      var fileList = _this.state.fileList;
      Promise.resolve(typeof onRemove === 'function' ? onRemove(file) : onRemove).then(function (ret) {
        // Prevent removing file
        if (ret === false) {
          return;
        }

        var removedFileList = (0, _utils.removeFileItem)(file, fileList);

        if (removedFileList) {
          file.status = 'removed'; // eslint-disable-line

          if (_this.upload) {
            _this.upload.abort(file);
          }

          _this.onChange({
            file: file,
            fileList: removedFileList
          });
        }
      });
    };

    _this.onChange = function (info) {
      if (!('fileList' in _this.props)) {
        _this.setState({
          fileList: info.fileList
        });
      }

      var onChange = _this.props.onChange;

      if (onChange) {
        onChange(info);
      }
    };

    _this.onFileDrop = function (e) {
      _this.setState({
        dragState: e.type
      });
    };

    _this.beforeUpload = function (file, fileList) {
      var beforeUpload = _this.props.beforeUpload;
      var stateFileList = _this.state.fileList;

      if (!beforeUpload) {
        return true;
      }

      var result = beforeUpload(file, fileList);

      if (result === false) {
        _this.onChange({
          file: file,
          fileList: (0, _uniqBy["default"])(stateFileList.concat(fileList.map(_utils.fileToObject)), function (item) {
            return item.uid;
          })
        });

        return false;
      }

      if (result && result.then) {
        return result;
      }

      return true;
    };

    _this.renderUploadList = function (locale) {
      var _this$props = _this.props,
          showUploadList = _this$props.showUploadList,
          listType = _this$props.listType,
          onPreview = _this$props.onPreview,
          onDownload = _this$props.onDownload,
          previewFile = _this$props.previewFile,
          disabled = _this$props.disabled,
          propLocale = _this$props.locale;
      var showRemoveIcon = showUploadList.showRemoveIcon,
          showPreviewIcon = showUploadList.showPreviewIcon,
          showDownloadIcon = showUploadList.showDownloadIcon;
      var fileList = _this.state.fileList;
      return React.createElement(_UploadList["default"], {
        listType: listType,
        items: fileList,
        previewFile: previewFile,
        onPreview: onPreview,
        onDownload: onDownload,
        onRemove: _this.handleRemove,
        showRemoveIcon: !disabled && showRemoveIcon,
        showPreviewIcon: showPreviewIcon,
        showDownloadIcon: showDownloadIcon,
        locale: _extends(_extends({}, locale), propLocale)
      });
    };

    _this.renderUpload = function (_ref2) {
      var _classNames2;

      var getPrefixCls = _ref2.getPrefixCls;
      var _this$props2 = _this.props,
          customizePrefixCls = _this$props2.prefixCls,
          className = _this$props2.className,
          showUploadList = _this$props2.showUploadList,
          listType = _this$props2.listType,
          type = _this$props2.type,
          disabled = _this$props2.disabled,
          children = _this$props2.children,
          style = _this$props2.style;
      var _this$state = _this.state,
          fileList = _this$state.fileList,
          dragState = _this$state.dragState;
      var prefixCls = getPrefixCls('upload', customizePrefixCls);

      var rcUploadProps = _extends(_extends({
        onStart: _this.onStart,
        onError: _this.onError,
        onProgress: _this.onProgress,
        onSuccess: _this.onSuccess
      }, _this.props), {
        prefixCls: prefixCls,
        beforeUpload: _this.beforeUpload
      });

      delete rcUploadProps.className;
      delete rcUploadProps.style;
      var uploadList = showUploadList ? React.createElement(_LocaleReceiver["default"], {
        componentName: "Upload",
        defaultLocale: _default2["default"].Upload
      }, _this.renderUploadList) : null;

      if (type === 'drag') {
        var _classNames;

        var dragCls = (0, _classnames["default"])(prefixCls, (_classNames = {}, _defineProperty(_classNames, "".concat(prefixCls, "-drag"), true), _defineProperty(_classNames, "".concat(prefixCls, "-drag-uploading"), fileList.some(function (file) {
          return file.status === 'uploading';
        })), _defineProperty(_classNames, "".concat(prefixCls, "-drag-hover"), dragState === 'dragover'), _defineProperty(_classNames, "".concat(prefixCls, "-disabled"), disabled), _classNames), className);
        return React.createElement("span", null, React.createElement("div", {
          className: dragCls,
          onDrop: _this.onFileDrop,
          onDragOver: _this.onFileDrop,
          onDragLeave: _this.onFileDrop,
          style: style
        }, React.createElement(_rcUpload["default"], _extends({}, rcUploadProps, {
          ref: _this.saveUpload,
          className: "".concat(prefixCls, "-btn")
        }), React.createElement("div", {
          className: "".concat(prefixCls, "-drag-container")
        }, children))), uploadList);
      }

      var uploadButtonCls = (0, _classnames["default"])(prefixCls, (_classNames2 = {}, _defineProperty(_classNames2, "".concat(prefixCls, "-select"), true), _defineProperty(_classNames2, "".concat(prefixCls, "-select-").concat(listType), true), _defineProperty(_classNames2, "".concat(prefixCls, "-disabled"), disabled), _classNames2)); // Remove id to avoid open by label when trigger is hidden
      // https://github.com/ant-design/ant-design/issues/14298
      // https://github.com/ant-design/ant-design/issues/16478

      if (!children || disabled) {
        delete rcUploadProps.id;
      }

      var uploadButton = React.createElement("div", {
        className: uploadButtonCls,
        style: children ? undefined : {
          display: 'none'
        }
      }, React.createElement(_rcUpload["default"], _extends({}, rcUploadProps, {
        ref: _this.saveUpload
      })));

      if (listType === 'picture-card') {
        return React.createElement("span", {
          className: (0, _classnames["default"])(className, "".concat(prefixCls, "-picture-card-wrapper"))
        }, uploadList, uploadButton);
      }

      return React.createElement("span", {
        className: className
      }, uploadButton, uploadList);
    };

    _this.state = {
      fileList: props.fileList || props.defaultFileList || [],
      dragState: 'drop'
    };
    (0, _warning["default"])('fileList' in props || !('value' in props), 'Upload', '`value` is not validate prop, do you mean `fileList`?');
    return _this;
  }

  _createClass(Upload, [{
    key: "componentWillUnmount",
    value: function componentWillUnmount() {
      this.clearProgressTimer();
    }
  }, {
    key: "clearProgressTimer",
    value: function clearProgressTimer() {
      clearInterval(this.progressTimer);
    }
  }, {
    key: "autoUpdateProgress",
    value: function autoUpdateProgress(_, file) {
      var _this2 = this;

      var getPercent = (0, _utils.genPercentAdd)();
      var curPercent = 0;
      this.clearProgressTimer();
      this.progressTimer = setInterval(function () {
        curPercent = getPercent(curPercent);

        _this2.onProgress({
          percent: curPercent * 100
        }, file);
      }, 200);
    }
  }, {
    key: "render",
    value: function render() {
      return React.createElement(_configProvider.ConfigConsumer, null, this.renderUpload);
    }
  }], [{
    key: "getDerivedStateFromProps",
    value: function getDerivedStateFromProps(nextProps) {
      if ('fileList' in nextProps) {
        return {
          fileList: nextProps.fileList || []
        };
      }

      return null;
    }
  }]);

  return Upload;
}(React.Component);

Upload.defaultProps = {
  type: 'select',
  multiple: false,
  action: '',
  data: {},
  accept: '',
  beforeUpload: _utils.T,
  showUploadList: true,
  listType: 'text',
  className: '',
  disabled: false,
  supportServerRender: true
};
(0, _reactLifecyclesCompat.polyfill)(Upload);
var _default = Upload;
exports["default"] = _default;
//# sourceMappingURL=Upload.js.map


/***/ }),

/***/ 1091:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony export (immutable) */ __webpack_exports__["a"] = uid;
var now = +new Date();
var index = 0;

function uid() {
  return "rc-upload-" + now + "-" + ++index;
}

/***/ }),

/***/ 1092:
/***/ (function(module, exports, __webpack_require__) {

var baseMatches = __webpack_require__(1191),
    baseMatchesProperty = __webpack_require__(1228),
    identity = __webpack_require__(1231),
    isArray = __webpack_require__(919),
    property = __webpack_require__(1232);

/**
 * The base implementation of `_.iteratee`.
 *
 * @private
 * @param {*} [value=_.identity] The value to convert to an iteratee.
 * @returns {Function} Returns the iteratee.
 */
function baseIteratee(value) {
  // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9.
  // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details.
  if (typeof value == 'function') {
    return value;
  }
  if (value == null) {
    return identity;
  }
  if (typeof value == 'object') {
    return isArray(value)
      ? baseMatchesProperty(value[0], value[1])
      : baseMatches(value);
  }
  return property(value);
}

module.exports = baseIteratee;


/***/ }),

/***/ 1093:
/***/ (function(module, exports, __webpack_require__) {

var ListCache = __webpack_require__(928),
    stackClear = __webpack_require__(1193),
    stackDelete = __webpack_require__(1194),
    stackGet = __webpack_require__(1195),
    stackHas = __webpack_require__(1196),
    stackSet = __webpack_require__(1197);

/**
 * Creates a stack cache object to store key-value pairs.
 *
 * @private
 * @constructor
 * @param {Array} [entries] The key-value pairs to cache.
 */
function Stack(entries) {
  var data = this.__data__ = new ListCache(entries);
  this.size = data.size;
}

// Add methods to `Stack`.
Stack.prototype.clear = stackClear;
Stack.prototype['delete'] = stackDelete;
Stack.prototype.get = stackGet;
Stack.prototype.has = stackHas;
Stack.prototype.set = stackSet;

module.exports = Stack;


/***/ }),

/***/ 1094:
/***/ (function(module, exports, __webpack_require__) {

var baseIsEqualDeep = __webpack_require__(1198),
    isObjectLike = __webpack_require__(325);

/**
 * The base implementation of `_.isEqual` which supports partial comparisons
 * and tracks traversed objects.
 *
 * @private
 * @param {*} value The value to compare.
 * @param {*} other The other value to compare.
 * @param {boolean} bitmask The bitmask flags.
 *  1 - Unordered comparison
 *  2 - Partial comparison
 * @param {Function} [customizer] The function to customize comparisons.
 * @param {Object} [stack] Tracks traversed `value` and `other` objects.
 * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
 */
function baseIsEqual(value, other, bitmask, customizer, stack) {
  if (value === other) {
    return true;
  }
  if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) {
    return value !== value && other !== other;
  }
  return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);
}

module.exports = baseIsEqual;


/***/ }),

/***/ 1095:
/***/ (function(module, exports, __webpack_require__) {

var SetCache = __webpack_require__(1096),
    arraySome = __webpack_require__(1201),
    cacheHas = __webpack_require__(1097);

/** Used to compose bitmasks for value comparisons. */
var COMPARE_PARTIAL_FLAG = 1,
    COMPARE_UNORDERED_FLAG = 2;

/**
 * A specialized version of `baseIsEqualDeep` for arrays with support for
 * partial deep comparisons.
 *
 * @private
 * @param {Array} array The array to compare.
 * @param {Array} other The other array to compare.
 * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
 * @param {Function} customizer The function to customize comparisons.
 * @param {Function} equalFunc The function to determine equivalents of values.
 * @param {Object} stack Tracks traversed `array` and `other` objects.
 * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.
 */
function equalArrays(array, other, bitmask, customizer, equalFunc, stack) {
  var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
      arrLength = array.length,
      othLength = other.length;

  if (arrLength != othLength && !(isPartial && othLength > arrLength)) {
    return false;
  }
  // Assume cyclic values are equal.
  var stacked = stack.get(array);
  if (stacked && stack.get(other)) {
    return stacked == other;
  }
  var index = -1,
      result = true,
      seen = (bitmask & COMPARE_UNORDERED_FLAG) ? new SetCache : undefined;

  stack.set(array, other);
  stack.set(other, array);

  // Ignore non-index properties.
  while (++index < arrLength) {
    var arrValue = array[index],
        othValue = other[index];

    if (customizer) {
      var compared = isPartial
        ? customizer(othValue, arrValue, index, other, array, stack)
        : customizer(arrValue, othValue, index, array, other, stack);
    }
    if (compared !== undefined) {
      if (compared) {
        continue;
      }
      result = false;
      break;
    }
    // Recursively compare arrays (susceptible to call stack limits).
    if (seen) {
      if (!arraySome(other, function(othValue, othIndex) {
            if (!cacheHas(seen, othIndex) &&
                (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {
              return seen.push(othIndex);
            }
          })) {
        result = false;
        break;
      }
    } else if (!(
          arrValue === othValue ||
            equalFunc(arrValue, othValue, bitmask, customizer, stack)
        )) {
      result = false;
      break;
    }
  }
  stack['delete'](array);
  stack['delete'](other);
  return result;
}

module.exports = equalArrays;


/***/ }),

/***/ 1096:
/***/ (function(module, exports, __webpack_require__) {

var MapCache = __webpack_require__(936),
    setCacheAdd = __webpack_require__(1199),
    setCacheHas = __webpack_require__(1200);

/**
 *
 * Creates an array cache object to store unique values.
 *
 * @private
 * @constructor
 * @param {Array} [values] The values to cache.
 */
function SetCache(values) {
  var index = -1,
      length = values == null ? 0 : values.length;

  this.__data__ = new MapCache;
  while (++index < length) {
    this.add(values[index]);
  }
}

// Add methods to `SetCache`.
SetCache.prototype.add = SetCache.prototype.push = setCacheAdd;
SetCache.prototype.has = setCacheHas;

module.exports = SetCache;


/***/ }),

/***/ 1097:
/***/ (function(module, exports) {

/**
 * Checks if a `cache` value for `key` exists.
 *
 * @private
 * @param {Object} cache The cache to query.
 * @param {string} key The key of the entry to check.
 * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
 */
function cacheHas(cache, key) {
  return cache.has(key);
}

module.exports = cacheHas;


/***/ }),

/***/ 1098:
/***/ (function(module, exports, __webpack_require__) {

var arrayLikeKeys = __webpack_require__(1212),
    baseKeys = __webpack_require__(1218),
    isArrayLike = __webpack_require__(1222);

/**
 * Creates an array of the own enumerable property names of `object`.
 *
 * **Note:** Non-object values are coerced to objects. See the
 * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
 * for more details.
 *
 * @static
 * @since 0.1.0
 * @memberOf _
 * @category Object
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of property names.
 * @example
 *
 * function Foo() {
 *   this.a = 1;
 *   this.b = 2;
 * }
 *
 * Foo.prototype.c = 3;
 *
 * _.keys(new Foo);
 * // => ['a', 'b'] (iteration order is not guaranteed)
 *
 * _.keys('hi');
 * // => ['0', '1']
 */
function keys(object) {
  return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);
}

module.exports = keys;


/***/ }),

/***/ 1099:
/***/ (function(module, exports, __webpack_require__) {

/* WEBPACK VAR INJECTION */(function(module) {var root = __webpack_require__(173),
    stubFalse = __webpack_require__(1214);

/** Detect free variable `exports`. */
var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;

/** Detect free variable `module`. */
var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;

/** Detect the popular CommonJS extension `module.exports`. */
var moduleExports = freeModule && freeModule.exports === freeExports;

/** Built-in value references. */
var Buffer = moduleExports ? root.Buffer : undefined;

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined;

/**
 * Checks if `value` is a buffer.
 *
 * @static
 * @memberOf _
 * @since 4.3.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.
 * @example
 *
 * _.isBuffer(new Buffer(2));
 * // => true
 *
 * _.isBuffer(new Uint8Array(2));
 * // => false
 */
var isBuffer = nativeIsBuffer || stubFalse;

module.exports = isBuffer;

/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(327)(module)))

/***/ }),

/***/ 1100:
/***/ (function(module, exports, __webpack_require__) {

var baseIsTypedArray = __webpack_require__(1215),
    baseUnary = __webpack_require__(1216),
    nodeUtil = __webpack_require__(1217);

/* Node.js helper references. */
var nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;

/**
 * Checks if `value` is classified as a typed array.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
 * @example
 *
 * _.isTypedArray(new Uint8Array);
 * // => true
 *
 * _.isTypedArray([]);
 * // => false
 */
var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;

module.exports = isTypedArray;


/***/ }),

/***/ 1101:
/***/ (function(module, exports, __webpack_require__) {

var getNative = __webpack_require__(920),
    root = __webpack_require__(173);

/* Built-in method references that are verified to be native. */
var Set = getNative(root, 'Set');

module.exports = Set;


/***/ }),

/***/ 1102:
/***/ (function(module, exports, __webpack_require__) {

var isObject = __webpack_require__(176);

/**
 * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` if suitable for strict
 *  equality comparisons, else `false`.
 */
function isStrictComparable(value) {
  return value === value && !isObject(value);
}

module.exports = isStrictComparable;


/***/ }),

/***/ 1103:
/***/ (function(module, exports) {

/**
 * A specialized version of `matchesProperty` for source values suitable
 * for strict equality comparisons, i.e. `===`.
 *
 * @private
 * @param {string} key The key of the property to get.
 * @param {*} srcValue The value to match.
 * @returns {Function} Returns the new spec function.
 */
function matchesStrictComparable(key, srcValue) {
  return function(object) {
    if (object == null) {
      return false;
    }
    return object[key] === srcValue &&
      (srcValue !== undefined || (key in Object(object)));
  };
}

module.exports = matchesStrictComparable;


/***/ }),

/***/ 1104:
/***/ (function(module, exports) {

/**
 * The base implementation of `_.findIndex` and `_.findLastIndex` without
 * support for iteratee shorthands.
 *
 * @private
 * @param {Array} array The array to inspect.
 * @param {Function} predicate The function invoked per iteration.
 * @param {number} fromIndex The index to search from.
 * @param {boolean} [fromRight] Specify iterating from right to left.
 * @returns {number} Returns the index of the matched value, else `-1`.
 */
function baseFindIndex(array, predicate, fromIndex, fromRight) {
  var length = array.length,
      index = fromIndex + (fromRight ? 1 : -1);

  while ((fromRight ? index-- : ++index < length)) {
    if (predicate(array[index], index, array)) {
      return index;
    }
  }
  return -1;
}

module.exports = baseFindIndex;


/***/ }),

/***/ 1105:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.T = T;
exports.fileToObject = fileToObject;
exports.genPercentAdd = genPercentAdd;
exports.getFileItem = getFileItem;
exports.removeFileItem = removeFileItem;
exports.previewImage = previewImage;
exports.isImageUrl = void 0;

function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }

function T() {
  return true;
} // Fix IE file.status problem
// via coping a new Object


function fileToObject(file) {
  return _extends(_extends({}, file), {
    lastModified: file.lastModified,
    lastModifiedDate: file.lastModifiedDate,
    name: file.name,
    size: file.size,
    type: file.type,
    uid: file.uid,
    percent: 0,
    originFileObj: file
  });
}
/**
 * 生成Progress percent: 0.1 -> 0.98
 *   - for ie
 */


function genPercentAdd() {
  var k = 0.1;
  var i = 0.01;
  var end = 0.98;
  return function (s) {
    var start = s;

    if (start >= end) {
      return start;
    }

    start += k;
    k -= i;

    if (k < 0.001) {
      k = 0.001;
    }

    return start;
  };
}

function getFileItem(file, fileList) {
  var matchKey = file.uid !== undefined ? 'uid' : 'name';
  return fileList.filter(function (item) {
    return item[matchKey] === file[matchKey];
  })[0];
}

function removeFileItem(file, fileList) {
  var matchKey = file.uid !== undefined ? 'uid' : 'name';
  var removed = fileList.filter(function (item) {
    return item[matchKey] !== file[matchKey];
  });

  if (removed.length === fileList.length) {
    return null;
  }

  return removed;
} // ==================== Default Image Preview ====================


var extname = function extname() {
  var url = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : '';
  var temp = url.split('/');
  var filename = temp[temp.length - 1];
  var filenameWithoutSuffix = filename.split(/#|\?/)[0];
  return (/\.[^./\\]*$/.exec(filenameWithoutSuffix) || [''])[0];
};

var isImageFileType = function isImageFileType(type) {
  return !!type && type.indexOf('image/') === 0;
};

var isImageUrl = function isImageUrl(file) {
  if (isImageFileType(file.type)) {
    return true;
  }

  var url = file.thumbUrl || file.url;
  var extension = extname(url);

  if (/^data:image\//.test(url) || /(webp|svg|png|gif|jpg|jpeg|jfif|bmp|dpg|ico)$/i.test(extension)) {
    return true;
  }

  if (/^data:/.test(url)) {
    // other file types of base64
    return false;
  }

  if (extension) {
    // other file types which have extension
    return false;
  }

  return true;
};

exports.isImageUrl = isImageUrl;
var MEASURE_SIZE = 200;

function previewImage(file) {
  return new Promise(function (resolve) {
    if (!isImageFileType(file.type)) {
      resolve('');
      return;
    }

    var canvas = document.createElement('canvas');
    canvas.width = MEASURE_SIZE;
    canvas.height = MEASURE_SIZE;
    canvas.style.cssText = "position: fixed; left: 0; top: 0; width: ".concat(MEASURE_SIZE, "px; height: ").concat(MEASURE_SIZE, "px; z-index: 9999; display: none;");
    document.body.appendChild(canvas);
    var ctx = canvas.getContext('2d');
    var img = new Image();

    img.onload = function () {
      var width = img.width,
          height = img.height;
      var drawWidth = MEASURE_SIZE;
      var drawHeight = MEASURE_SIZE;
      var offsetX = 0;
      var offsetY = 0;

      if (width < height) {
        drawHeight = height * (MEASURE_SIZE / width);
        offsetY = -(drawHeight - drawWidth) / 2;
      } else {
        drawWidth = width * (MEASURE_SIZE / height);
        offsetX = -(drawWidth - drawHeight) / 2;
      }

      ctx.drawImage(img, offsetX, offsetY, drawWidth, drawHeight);
      var dataURL = canvas.toDataURL();
      document.body.removeChild(canvas);
      resolve(dataURL);
    };

    img.src = window.URL.createObjectURL(file);
  });
}
//# sourceMappingURL=utils.js.map


/***/ }),

/***/ 1138:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


__webpack_require__(31);

__webpack_require__(1181);

__webpack_require__(1155);

__webpack_require__(175);
//# sourceMappingURL=css.js.map


/***/ }),

/***/ 1139:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;

var _Upload = _interopRequireDefault(__webpack_require__(1090));

var _Dragger = _interopRequireDefault(__webpack_require__(1244));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

_Upload["default"].Dragger = _Dragger["default"];
var _default = _Upload["default"];
exports["default"] = _default;
//# sourceMappingURL=index.js.map


/***/ }),

/***/ 1155:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


__webpack_require__(31);

__webpack_require__(1163);
//# sourceMappingURL=css.js.map


/***/ }),

/***/ 1156:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;

var _progress = _interopRequireDefault(__webpack_require__(1165));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _default = _progress["default"];
exports["default"] = _default;
//# sourceMappingURL=index.js.map


/***/ }),

/***/ 1163:
/***/ (function(module, exports, __webpack_require__) {

// style-loader: Adds some css to the DOM by adding a <style> tag

// load the styles
var content = __webpack_require__(1164);
if(typeof content === 'string') content = [[module.i, content, '']];
// Prepare cssTransformation
var transform;

var options = {"hmr":false}
options.transform = transform
// add the styles to the DOM
var update = __webpack_require__(318)(content, options);
if(content.locals) module.exports = content.locals;


/***/ }),

/***/ 1164:
/***/ (function(module, exports, __webpack_require__) {

exports = module.exports = __webpack_require__(317)(true);
// imports


// module
exports.push([module.i, ".ant-progress{-webkit-box-sizing:border-box;box-sizing:border-box;margin:0;padding:0;color:rgba(0,0,0,.65);font-size:14px;font-variant:tabular-nums;line-height:1.5;list-style:none;-webkit-font-feature-settings:\"tnum\";font-feature-settings:\"tnum\";display:inline-block}.ant-progress-line{position:relative;width:100%;font-size:14px}.ant-progress-small.ant-progress-line,.ant-progress-small.ant-progress-line .ant-progress-text .anticon{font-size:12px}.ant-progress-outer{display:inline-block;width:100%;margin-right:0;padding-right:0}.ant-progress-show-info .ant-progress-outer{margin-right:calc(-2em - 8px);padding-right:calc(2em + 8px)}.ant-progress-inner{position:relative;display:inline-block;width:100%;overflow:hidden;vertical-align:middle;background-color:#f5f5f5;border-radius:100px}.ant-progress-circle-trail{stroke:#f5f5f5}.ant-progress-circle-path{-webkit-animation:ant-progress-appear .3s;animation:ant-progress-appear .3s}.ant-progress-inner:not(.ant-progress-circle-gradient) .ant-progress-circle-path{stroke:#1890ff}.ant-progress-bg,.ant-progress-success-bg{position:relative;background-color:#1890ff;border-radius:100px;-webkit-transition:all .4s cubic-bezier(.08,.82,.17,1) 0s;-o-transition:all .4s cubic-bezier(.08,.82,.17,1) 0s;transition:all .4s cubic-bezier(.08,.82,.17,1) 0s}.ant-progress-success-bg{position:absolute;top:0;left:0;background-color:#52c41a}.ant-progress-text{display:inline-block;width:2em;margin-left:8px;color:rgba(0,0,0,.45);font-size:1em;line-height:1;white-space:nowrap;text-align:left;vertical-align:middle;word-break:normal}.ant-progress-text .anticon{font-size:14px}.ant-progress-status-active .ant-progress-bg:before{position:absolute;top:0;right:0;bottom:0;left:0;background:#fff;border-radius:10px;opacity:0;-webkit-animation:ant-progress-active 2.4s cubic-bezier(.23,1,.32,1) infinite;animation:ant-progress-active 2.4s cubic-bezier(.23,1,.32,1) infinite;content:\"\"}.ant-progress-status-exception .ant-progress-bg{background-color:#f5222d}.ant-progress-status-exception .ant-progress-text{color:#f5222d}.ant-progress-status-exception .ant-progress-inner:not(.ant-progress-circle-gradient) .ant-progress-circle-path{stroke:#f5222d}.ant-progress-status-success .ant-progress-bg{background-color:#52c41a}.ant-progress-status-success .ant-progress-text{color:#52c41a}.ant-progress-status-success .ant-progress-inner:not(.ant-progress-circle-gradient) .ant-progress-circle-path{stroke:#52c41a}.ant-progress-circle .ant-progress-inner{position:relative;line-height:1;background-color:transparent}.ant-progress-circle .ant-progress-text{position:absolute;top:50%;left:50%;width:100%;margin:0;padding:0;color:rgba(0,0,0,.65);line-height:1;white-space:normal;text-align:center;-webkit-transform:translate(-50%,-50%);-ms-transform:translate(-50%,-50%);transform:translate(-50%,-50%)}.ant-progress-circle .ant-progress-text .anticon{font-size:1.16666667em}.ant-progress-circle.ant-progress-status-exception .ant-progress-text{color:#f5222d}.ant-progress-circle.ant-progress-status-success .ant-progress-text{color:#52c41a}@-webkit-keyframes ant-progress-active{0%{width:0;opacity:.1}20%{width:0;opacity:.5}to{width:100%;opacity:0}}@keyframes ant-progress-active{0%{width:0;opacity:.1}20%{width:0;opacity:.5}to{width:100%;opacity:0}}", "", {"version":3,"sources":["/Users/hs/forgeplus-react/node_modules/antd/lib/progress/style/index.css"],"names":[],"mappings":"AAIA,cACE,8BAA+B,AACvB,sBAAuB,AAC/B,SAAU,AACV,UAAW,AACX,sBAA2B,AAC3B,eAAgB,AAChB,0BAA2B,AAC3B,gBAAiB,AACjB,gBAAiB,AACjB,qCAAsC,AAC9B,6BAA8B,AACtC,oBAAsB,CACvB,AACD,mBACE,kBAAmB,AACnB,WAAY,AACZ,cAAgB,CACjB,AACD,wGAEE,cAAgB,CACjB,AACD,oBACE,qBAAsB,AACtB,WAAY,AACZ,eAAgB,AAChB,eAAiB,CAClB,AACD,4CACE,8BAA+B,AAC/B,6BAA+B,CAChC,AACD,oBACE,kBAAmB,AACnB,qBAAsB,AACtB,WAAY,AACZ,gBAAiB,AACjB,sBAAuB,AACvB,yBAA0B,AAC1B,mBAAqB,CACtB,AACD,2BACE,cAAgB,CACjB,AACD,0BACE,0CAA4C,AACpC,iCAAoC,CAC7C,AACD,iFACE,cAAgB,CACjB,AACD,0CAEE,kBAAmB,AACnB,yBAA0B,AAC1B,oBAAqB,AACrB,0DAAkE,AAClE,qDAA6D,AAC7D,iDAA0D,CAC3D,AACD,yBACE,kBAAmB,AACnB,MAAO,AACP,OAAQ,AACR,wBAA0B,CAC3B,AACD,mBACE,qBAAsB,AACtB,UAAW,AACX,gBAAiB,AACjB,sBAA2B,AAC3B,cAAe,AACf,cAAe,AACf,mBAAoB,AACpB,gBAAiB,AACjB,sBAAuB,AACvB,iBAAmB,CACpB,AACD,4BACE,cAAgB,CACjB,AACD,oDACE,kBAAmB,AACnB,MAAO,AACP,QAAS,AACT,SAAU,AACV,OAAQ,AACR,gBAAiB,AACjB,mBAAoB,AACpB,UAAW,AACX,8EAAoF,AAC5E,sEAA4E,AACpF,UAAY,CACb,AACD,gDACE,wBAA0B,CAC3B,AACD,kDACE,aAAe,CAChB,AACD,gHACE,cAAgB,CACjB,AACD,8CACE,wBAA0B,CAC3B,AACD,gDACE,aAAe,CAChB,AACD,8GACE,cAAgB,CACjB,AACD,yCACE,kBAAmB,AACnB,cAAe,AACf,4BAA8B,CAC/B,AACD,wCACE,kBAAmB,AACnB,QAAS,AACT,SAAU,AACV,WAAY,AACZ,SAAU,AACV,UAAW,AACX,sBAA2B,AAC3B,cAAe,AACf,mBAAoB,AACpB,kBAAmB,AACnB,uCAAyC,AACrC,mCAAqC,AACjC,8BAAiC,CAC1C,AACD,iDACE,sBAAwB,CACzB,AACD,sEACE,aAAe,CAChB,AACD,oEACE,aAAe,CAChB,AACD,uCACE,GACE,QAAS,AACT,UAAa,CACd,AACD,IACE,QAAS,AACT,UAAa,CACd,AACD,GACE,WAAY,AACZ,SAAW,CACZ,CACF,AACD,+BACE,GACE,QAAS,AACT,UAAa,CACd,AACD,IACE,QAAS,AACT,UAAa,CACd,AACD,GACE,WAAY,AACZ,SAAW,CACZ,CACF","file":"index.css","sourcesContent":["/* stylelint-disable at-rule-empty-line-before,at-rule-name-space-after,at-rule-no-unknown */\n/* stylelint-disable no-duplicate-selectors */\n/* stylelint-disable */\n/* stylelint-disable declaration-bang-space-before,no-duplicate-selectors,string-no-newline */\n.ant-progress {\n  -webkit-box-sizing: border-box;\n          box-sizing: border-box;\n  margin: 0;\n  padding: 0;\n  color: rgba(0, 0, 0, 0.65);\n  font-size: 14px;\n  font-variant: tabular-nums;\n  line-height: 1.5;\n  list-style: none;\n  -webkit-font-feature-settings: 'tnum';\n          font-feature-settings: 'tnum';\n  display: inline-block;\n}\n.ant-progress-line {\n  position: relative;\n  width: 100%;\n  font-size: 14px;\n}\n.ant-progress-small.ant-progress-line,\n.ant-progress-small.ant-progress-line .ant-progress-text .anticon {\n  font-size: 12px;\n}\n.ant-progress-outer {\n  display: inline-block;\n  width: 100%;\n  margin-right: 0;\n  padding-right: 0;\n}\n.ant-progress-show-info .ant-progress-outer {\n  margin-right: calc(-2em - 8px);\n  padding-right: calc(2em + 8px);\n}\n.ant-progress-inner {\n  position: relative;\n  display: inline-block;\n  width: 100%;\n  overflow: hidden;\n  vertical-align: middle;\n  background-color: #f5f5f5;\n  border-radius: 100px;\n}\n.ant-progress-circle-trail {\n  stroke: #f5f5f5;\n}\n.ant-progress-circle-path {\n  -webkit-animation: ant-progress-appear 0.3s;\n          animation: ant-progress-appear 0.3s;\n}\n.ant-progress-inner:not(.ant-progress-circle-gradient) .ant-progress-circle-path {\n  stroke: #1890ff;\n}\n.ant-progress-success-bg,\n.ant-progress-bg {\n  position: relative;\n  background-color: #1890ff;\n  border-radius: 100px;\n  -webkit-transition: all 0.4s cubic-bezier(0.08, 0.82, 0.17, 1) 0s;\n  -o-transition: all 0.4s cubic-bezier(0.08, 0.82, 0.17, 1) 0s;\n  transition: all 0.4s cubic-bezier(0.08, 0.82, 0.17, 1) 0s;\n}\n.ant-progress-success-bg {\n  position: absolute;\n  top: 0;\n  left: 0;\n  background-color: #52c41a;\n}\n.ant-progress-text {\n  display: inline-block;\n  width: 2em;\n  margin-left: 8px;\n  color: rgba(0, 0, 0, 0.45);\n  font-size: 1em;\n  line-height: 1;\n  white-space: nowrap;\n  text-align: left;\n  vertical-align: middle;\n  word-break: normal;\n}\n.ant-progress-text .anticon {\n  font-size: 14px;\n}\n.ant-progress-status-active .ant-progress-bg::before {\n  position: absolute;\n  top: 0;\n  right: 0;\n  bottom: 0;\n  left: 0;\n  background: #fff;\n  border-radius: 10px;\n  opacity: 0;\n  -webkit-animation: ant-progress-active 2.4s cubic-bezier(0.23, 1, 0.32, 1) infinite;\n          animation: ant-progress-active 2.4s cubic-bezier(0.23, 1, 0.32, 1) infinite;\n  content: '';\n}\n.ant-progress-status-exception .ant-progress-bg {\n  background-color: #f5222d;\n}\n.ant-progress-status-exception .ant-progress-text {\n  color: #f5222d;\n}\n.ant-progress-status-exception .ant-progress-inner:not(.ant-progress-circle-gradient) .ant-progress-circle-path {\n  stroke: #f5222d;\n}\n.ant-progress-status-success .ant-progress-bg {\n  background-color: #52c41a;\n}\n.ant-progress-status-success .ant-progress-text {\n  color: #52c41a;\n}\n.ant-progress-status-success .ant-progress-inner:not(.ant-progress-circle-gradient) .ant-progress-circle-path {\n  stroke: #52c41a;\n}\n.ant-progress-circle .ant-progress-inner {\n  position: relative;\n  line-height: 1;\n  background-color: transparent;\n}\n.ant-progress-circle .ant-progress-text {\n  position: absolute;\n  top: 50%;\n  left: 50%;\n  width: 100%;\n  margin: 0;\n  padding: 0;\n  color: rgba(0, 0, 0, 0.65);\n  line-height: 1;\n  white-space: normal;\n  text-align: center;\n  -webkit-transform: translate(-50%, -50%);\n      -ms-transform: translate(-50%, -50%);\n          transform: translate(-50%, -50%);\n}\n.ant-progress-circle .ant-progress-text .anticon {\n  font-size: 1.16666667em;\n}\n.ant-progress-circle.ant-progress-status-exception .ant-progress-text {\n  color: #f5222d;\n}\n.ant-progress-circle.ant-progress-status-success .ant-progress-text {\n  color: #52c41a;\n}\n@-webkit-keyframes ant-progress-active {\n  0% {\n    width: 0;\n    opacity: 0.1;\n  }\n  20% {\n    width: 0;\n    opacity: 0.5;\n  }\n  100% {\n    width: 100%;\n    opacity: 0;\n  }\n}\n@keyframes ant-progress-active {\n  0% {\n    width: 0;\n    opacity: 0.1;\n  }\n  20% {\n    width: 0;\n    opacity: 0.5;\n  }\n  100% {\n    width: 100%;\n    opacity: 0;\n  }\n}\n"],"sourceRoot":""}]);

// exports


/***/ }),

/***/ 1165:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;

var PropTypes = _interopRequireWildcard(__webpack_require__(1));

var React = _interopRequireWildcard(__webpack_require__(0));

var _classnames = _interopRequireDefault(__webpack_require__(3));

var _omit = _interopRequireDefault(__webpack_require__(46));

var _icon = _interopRequireDefault(__webpack_require__(27));

var _configProvider = __webpack_require__(14);

var _type = __webpack_require__(71);

var _Line = _interopRequireDefault(__webpack_require__(1166));

var _Circle = _interopRequireDefault(__webpack_require__(1167));

var _utils = __webpack_require__(964);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function _getRequireWildcardCache() { return cache; }; return cache; }

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== "object" && typeof obj !== "function") { return { "default": obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj["default"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }

function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var __rest = void 0 && (void 0).__rest || function (s, e) {
  var t = {};

  for (var p in s) {
    if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0) t[p] = s[p];
  }

  if (s != null && typeof Object.getOwnPropertySymbols === "function") for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
    if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i])) t[p[i]] = s[p[i]];
  }
  return t;
};

var ProgressTypes = (0, _type.tuple)('line', 'circle', 'dashboard');
var ProgressStatuses = (0, _type.tuple)('normal', 'exception', 'active', 'success');

var Progress =
/*#__PURE__*/
function (_React$Component) {
  _inherits(Progress, _React$Component);

  function Progress() {
    var _this;

    _classCallCheck(this, Progress);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(Progress).apply(this, arguments));

    _this.renderProgress = function (_ref) {
      var _classNames;

      var getPrefixCls = _ref.getPrefixCls;

      var _assertThisInitialize = _assertThisInitialized(_this),
          props = _assertThisInitialize.props;

      var customizePrefixCls = props.prefixCls,
          className = props.className,
          size = props.size,
          type = props.type,
          showInfo = props.showInfo,
          restProps = __rest(props, ["prefixCls", "className", "size", "type", "showInfo"]);

      var prefixCls = getPrefixCls('progress', customizePrefixCls);

      var progressStatus = _this.getProgressStatus();

      var progressInfo = _this.renderProcessInfo(prefixCls, progressStatus);

      var progress; // Render progress shape

      if (type === 'line') {
        progress = React.createElement(_Line["default"], _extends({}, _this.props, {
          prefixCls: prefixCls
        }), progressInfo);
      } else if (type === 'circle' || type === 'dashboard') {
        progress = React.createElement(_Circle["default"], _extends({}, _this.props, {
          prefixCls: prefixCls,
          progressStatus: progressStatus
        }), progressInfo);
      }

      var classString = (0, _classnames["default"])(prefixCls, (_classNames = {}, _defineProperty(_classNames, "".concat(prefixCls, "-").concat(type === 'dashboard' && 'circle' || type), true), _defineProperty(_classNames, "".concat(prefixCls, "-status-").concat(progressStatus), true), _defineProperty(_classNames, "".concat(prefixCls, "-show-info"), showInfo), _defineProperty(_classNames, "".concat(prefixCls, "-").concat(size), size), _classNames), className);
      return React.createElement("div", _extends({}, (0, _omit["default"])(restProps, ['status', 'format', 'trailColor', 'successPercent', 'strokeWidth', 'width', 'gapDegree', 'gapPosition', 'strokeColor', 'strokeLinecap', 'percent']), {
        className: classString
      }), progress);
    };

    return _this;
  }

  _createClass(Progress, [{
    key: "getPercentNumber",
    value: function getPercentNumber() {
      var _this$props = this.props,
          successPercent = _this$props.successPercent,
          _this$props$percent = _this$props.percent,
          percent = _this$props$percent === void 0 ? 0 : _this$props$percent;
      return parseInt(successPercent !== undefined ? successPercent.toString() : percent.toString(), 10);
    }
  }, {
    key: "getProgressStatus",
    value: function getProgressStatus() {
      var status = this.props.status;

      if (ProgressStatuses.indexOf(status) < 0 && this.getPercentNumber() >= 100) {
        return 'success';
      }

      return status || 'normal';
    }
  }, {
    key: "renderProcessInfo",
    value: function renderProcessInfo(prefixCls, progressStatus) {
      var _this$props2 = this.props,
          showInfo = _this$props2.showInfo,
          format = _this$props2.format,
          type = _this$props2.type,
          percent = _this$props2.percent,
          successPercent = _this$props2.successPercent;
      if (!showInfo) return null;
      var text;

      var textFormatter = format || function (percentNumber) {
        return "".concat(percentNumber, "%");
      };

      var iconType = type === 'circle' || type === 'dashboard' ? '' : '-circle';

      if (format || progressStatus !== 'exception' && progressStatus !== 'success') {
        text = textFormatter((0, _utils.validProgress)(percent), (0, _utils.validProgress)(successPercent));
      } else if (progressStatus === 'exception') {
        text = React.createElement(_icon["default"], {
          type: "close".concat(iconType),
          theme: type === 'line' ? 'filled' : 'outlined'
        });
      } else if (progressStatus === 'success') {
        text = React.createElement(_icon["default"], {
          type: "check".concat(iconType),
          theme: type === 'line' ? 'filled' : 'outlined'
        });
      }

      return React.createElement("span", {
        className: "".concat(prefixCls, "-text"),
        title: typeof text === 'string' ? text : undefined
      }, text);
    }
  }, {
    key: "render",
    value: function render() {
      return React.createElement(_configProvider.ConfigConsumer, null, this.renderProgress);
    }
  }]);

  return Progress;
}(React.Component);

exports["default"] = Progress;
Progress.defaultProps = {
  type: 'line',
  percent: 0,
  showInfo: true,
  trailColor: '#f3f3f3',
  size: 'default',
  gapDegree: 0,
  strokeLinecap: 'round'
};
Progress.propTypes = {
  status: PropTypes.oneOf(ProgressStatuses),
  type: PropTypes.oneOf(ProgressTypes),
  showInfo: PropTypes.bool,
  percent: PropTypes.number,
  width: PropTypes.number,
  strokeWidth: PropTypes.number,
  strokeLinecap: PropTypes.oneOf(['round', 'square']),
  strokeColor: PropTypes.oneOfType([PropTypes.string, PropTypes.object]),
  trailColor: PropTypes.string,
  format: PropTypes.func,
  gapDegree: PropTypes.number
};
//# sourceMappingURL=progress.js.map


/***/ }),

/***/ 1166:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = exports.handleGradient = exports.sortGradient = void 0;

var React = _interopRequireWildcard(__webpack_require__(0));

var _utils = __webpack_require__(964);

function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function _getRequireWildcardCache() { return cache; }; return cache; }

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== "object" && typeof obj !== "function") { return { "default": obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj["default"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }

function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }

function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _nonIterableRest(); }

function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance"); }

function _iterableToArrayLimit(arr, i) { if (!(Symbol.iterator in Object(arr) || Object.prototype.toString.call(arr) === "[object Arguments]")) { return; } var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }

function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }

var __rest = void 0 && (void 0).__rest || function (s, e) {
  var t = {};

  for (var p in s) {
    if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0) t[p] = s[p];
  }

  if (s != null && typeof Object.getOwnPropertySymbols === "function") for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
    if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i])) t[p[i]] = s[p[i]];
  }
  return t;
};

/**
 * {
 *   '0%': '#afc163',
 *   '75%': '#009900',
 *   '50%': 'green',     ====>     '#afc163 0%, #66FF00 25%, #00CC00 50%, #009900 75%, #ffffff 100%'
 *   '25%': '#66FF00',
 *   '100%': '#ffffff'
 * }
 */
var sortGradient = function sortGradient(gradients) {
  var tempArr = []; // eslint-disable-next-line no-restricted-syntax

  for (var _i = 0, _Object$entries = Object.entries(gradients); _i < _Object$entries.length; _i++) {
    var _Object$entries$_i = _slicedToArray(_Object$entries[_i], 2),
        key = _Object$entries$_i[0],
        value = _Object$entries$_i[1];

    var formatKey = parseFloat(key.replace(/%/g, ''));

    if (isNaN(formatKey)) {
      return {};
    }

    tempArr.push({
      key: formatKey,
      value: value
    });
  }

  tempArr = tempArr.sort(function (a, b) {
    return a.key - b.key;
  });
  return tempArr.map(function (_ref) {
    var key = _ref.key,
        value = _ref.value;
    return "".concat(value, " ").concat(key, "%");
  }).join(', ');
};
/**
 * {
 *   '0%': '#afc163',
 *   '25%': '#66FF00',
 *   '50%': '#00CC00',     ====>  linear-gradient(to right, #afc163 0%, #66FF00 25%,
 *   '75%': '#009900',              #00CC00 50%, #009900 75%, #ffffff 100%)
 *   '100%': '#ffffff'
 * }
 *
 * Then this man came to realize the truth:
 * Besides six pence, there is the moon.
 * Besides bread and butter, there is the bug.
 * And...
 * Besides women, there is the code.
 */


exports.sortGradient = sortGradient;

var handleGradient = function handleGradient(strokeColor) {
  var _strokeColor$from = strokeColor.from,
      from = _strokeColor$from === void 0 ? '#1890ff' : _strokeColor$from,
      _strokeColor$to = strokeColor.to,
      to = _strokeColor$to === void 0 ? '#1890ff' : _strokeColor$to,
      _strokeColor$directio = strokeColor.direction,
      direction = _strokeColor$directio === void 0 ? 'to right' : _strokeColor$directio,
      rest = __rest(strokeColor, ["from", "to", "direction"]);

  if (Object.keys(rest).length !== 0) {
    var sortedGradients = sortGradient(rest);
    return {
      backgroundImage: "linear-gradient(".concat(direction, ", ").concat(sortedGradients, ")")
    };
  }

  return {
    backgroundImage: "linear-gradient(".concat(direction, ", ").concat(from, ", ").concat(to, ")")
  };
};

exports.handleGradient = handleGradient;

var Line = function Line(props) {
  var prefixCls = props.prefixCls,
      percent = props.percent,
      successPercent = props.successPercent,
      strokeWidth = props.strokeWidth,
      size = props.size,
      strokeColor = props.strokeColor,
      strokeLinecap = props.strokeLinecap,
      children = props.children;
  var backgroundProps;

  if (strokeColor && typeof strokeColor !== 'string') {
    backgroundProps = handleGradient(strokeColor);
  } else {
    backgroundProps = {
      background: strokeColor
    };
  }

  var percentStyle = _extends({
    width: "".concat((0, _utils.validProgress)(percent), "%"),
    height: strokeWidth || (size === 'small' ? 6 : 8),
    borderRadius: strokeLinecap === 'square' ? 0 : ''
  }, backgroundProps);

  var successPercentStyle = {
    width: "".concat((0, _utils.validProgress)(successPercent), "%"),
    height: strokeWidth || (size === 'small' ? 6 : 8),
    borderRadius: strokeLinecap === 'square' ? 0 : ''
  };
  var successSegment = successPercent !== undefined ? React.createElement("div", {
    className: "".concat(prefixCls, "-success-bg"),
    style: successPercentStyle
  }) : null;
  return React.createElement("div", null, React.createElement("div", {
    className: "".concat(prefixCls, "-outer")
  }, React.createElement("div", {
    className: "".concat(prefixCls, "-inner")
  }, React.createElement("div", {
    className: "".concat(prefixCls, "-bg"),
    style: percentStyle
  }), successSegment)), children);
};

var _default = Line;
exports["default"] = _default;
//# sourceMappingURL=Line.js.map


/***/ }),

/***/ 1167:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;

var React = _interopRequireWildcard(__webpack_require__(0));

var _rcProgress = __webpack_require__(1168);

var _classnames = _interopRequireDefault(__webpack_require__(3));

var _utils = __webpack_require__(964);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function _getRequireWildcardCache() { return cache; }; return cache; }

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== "object" && typeof obj !== "function") { return { "default": obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj["default"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

var statusColorMap = {
  normal: '#108ee9',
  exception: '#ff5500',
  success: '#87d068'
};

function getPercentage(_ref) {
  var percent = _ref.percent,
      successPercent = _ref.successPercent;
  var ptg = (0, _utils.validProgress)(percent);

  if (!successPercent) {
    return ptg;
  }

  var successPtg = (0, _utils.validProgress)(successPercent);
  return [successPercent, (0, _utils.validProgress)(ptg - successPtg)];
}

function getStrokeColor(_ref2) {
  var progressStatus = _ref2.progressStatus,
      successPercent = _ref2.successPercent,
      strokeColor = _ref2.strokeColor;
  var color = strokeColor || statusColorMap[progressStatus];

  if (!successPercent) {
    return color;
  }

  return [statusColorMap.success, color];
}

var Circle = function Circle(props) {
  var prefixCls = props.prefixCls,
      width = props.width,
      strokeWidth = props.strokeWidth,
      trailColor = props.trailColor,
      strokeLinecap = props.strokeLinecap,
      gapPosition = props.gapPosition,
      gapDegree = props.gapDegree,
      type = props.type,
      children = props.children;
  var circleSize = width || 120;
  var circleStyle = {
    width: circleSize,
    height: circleSize,
    fontSize: circleSize * 0.15 + 6
  };
  var circleWidth = strokeWidth || 6;
  var gapPos = gapPosition || type === 'dashboard' && 'bottom' || 'top';
  var gapDeg = gapDegree || (type === 'dashboard' ? 75 : undefined);
  var strokeColor = getStrokeColor(props);
  var isGradient = Object.prototype.toString.call(strokeColor) === '[object Object]';
  var wrapperClassName = (0, _classnames["default"])("".concat(prefixCls, "-inner"), _defineProperty({}, "".concat(prefixCls, "-circle-gradient"), isGradient));
  return React.createElement("div", {
    className: wrapperClassName,
    style: circleStyle
  }, React.createElement(_rcProgress.Circle, {
    percent: getPercentage(props),
    strokeWidth: circleWidth,
    trailWidth: circleWidth,
    strokeColor: strokeColor,
    strokeLinecap: strokeLinecap,
    trailColor: trailColor,
    prefixCls: prefixCls,
    gapDegree: gapDeg,
    gapPosition: gapPos
  }), children);
};

var _default = Circle;
exports["default"] = _default;
//# sourceMappingURL=Circle.js.map


/***/ }),

/***/ 1168:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
Object.defineProperty(__webpack_exports__, "__esModule", { value: true });
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0__Line__ = __webpack_require__(1169);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1__Circle__ = __webpack_require__(1170);
/* harmony reexport (binding) */ __webpack_require__.d(__webpack_exports__, "Line", function() { return __WEBPACK_IMPORTED_MODULE_0__Line__["a"]; });
/* harmony reexport (binding) */ __webpack_require__.d(__webpack_exports__, "Circle", function() { return __WEBPACK_IMPORTED_MODULE_1__Circle__["a"]; });



/* harmony default export */ __webpack_exports__["default"] = ({
  Line: __WEBPACK_IMPORTED_MODULE_0__Line__["a" /* default */],
  Circle: __WEBPACK_IMPORTED_MODULE_1__Circle__["a" /* default */]
});

/***/ }),

/***/ 1169:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_react__ = __webpack_require__(0);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_react___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_0_react__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1__enhancer__ = __webpack_require__(1035);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2__types__ = __webpack_require__(1036);
function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }

function _objectWithoutProperties(source, excluded) { if (source == null) return {}; var target = _objectWithoutPropertiesLoose(source, excluded); var key, i; if (Object.getOwnPropertySymbols) { var sourceSymbolKeys = Object.getOwnPropertySymbols(source); for (i = 0; i < sourceSymbolKeys.length; i++) { key = sourceSymbolKeys[i]; if (excluded.indexOf(key) >= 0) continue; if (!Object.prototype.propertyIsEnumerable.call(source, key)) continue; target[key] = source[key]; } } return target; }

function _objectWithoutPropertiesLoose(source, excluded) { if (source == null) return {}; var target = {}; var sourceKeys = Object.keys(source); var key, i; for (i = 0; i < sourceKeys.length; i++) { key = sourceKeys[i]; if (excluded.indexOf(key) >= 0) continue; target[key] = source[key]; } return target; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (typeof call === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }





var Line =
/*#__PURE__*/
function (_Component) {
  _inherits(Line, _Component);

  function Line() {
    var _getPrototypeOf2;

    var _this;

    _classCallCheck(this, Line);

    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    _this = _possibleConstructorReturn(this, (_getPrototypeOf2 = _getPrototypeOf(Line)).call.apply(_getPrototypeOf2, [this].concat(args)));

    _defineProperty(_assertThisInitialized(_this), "paths", {});

    return _this;
  }

  _createClass(Line, [{
    key: "render",
    value: function render() {
      var _this2 = this;

      var _this$props = this.props,
          className = _this$props.className,
          percent = _this$props.percent,
          prefixCls = _this$props.prefixCls,
          strokeColor = _this$props.strokeColor,
          strokeLinecap = _this$props.strokeLinecap,
          strokeWidth = _this$props.strokeWidth,
          style = _this$props.style,
          trailColor = _this$props.trailColor,
          trailWidth = _this$props.trailWidth,
          transition = _this$props.transition,
          restProps = _objectWithoutProperties(_this$props, ["className", "percent", "prefixCls", "strokeColor", "strokeLinecap", "strokeWidth", "style", "trailColor", "trailWidth", "transition"]);

      delete restProps.gapPosition;
      var percentList = Array.isArray(percent) ? percent : [percent];
      var strokeColorList = Array.isArray(strokeColor) ? strokeColor : [strokeColor];
      var center = strokeWidth / 2;
      var right = 100 - strokeWidth / 2;
      var pathString = "M ".concat(strokeLinecap === 'round' ? center : 0, ",").concat(center, "\n           L ").concat(strokeLinecap === 'round' ? right : 100, ",").concat(center);
      var viewBoxString = "0 0 100 ".concat(strokeWidth);
      var stackPtg = 0;
      return __WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement("svg", _extends({
        className: "".concat(prefixCls, "-line ").concat(className),
        viewBox: viewBoxString,
        preserveAspectRatio: "none",
        style: style
      }, restProps), __WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement("path", {
        className: "".concat(prefixCls, "-line-trail"),
        d: pathString,
        strokeLinecap: strokeLinecap,
        stroke: trailColor,
        strokeWidth: trailWidth || strokeWidth,
        fillOpacity: "0"
      }), percentList.map(function (ptg, index) {
        var pathStyle = {
          strokeDasharray: "".concat(ptg, "px, 100px"),
          strokeDashoffset: "-".concat(stackPtg, "px"),
          transition: transition || 'stroke-dashoffset 0.3s ease 0s, stroke-dasharray .3s ease 0s, stroke 0.3s linear'
        };
        var color = strokeColorList[index] || strokeColorList[strokeColorList.length - 1];
        stackPtg += ptg;
        return __WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement("path", {
          key: index,
          className: "".concat(prefixCls, "-line-path"),
          d: pathString,
          strokeLinecap: strokeLinecap,
          stroke: color,
          strokeWidth: strokeWidth,
          fillOpacity: "0",
          ref: function ref(path) {
            _this2.paths[index] = path;
          },
          style: pathStyle
        });
      }));
    }
  }]);

  return Line;
}(__WEBPACK_IMPORTED_MODULE_0_react__["Component"]);

Line.propTypes = __WEBPACK_IMPORTED_MODULE_2__types__["b" /* propTypes */];
Line.defaultProps = __WEBPACK_IMPORTED_MODULE_2__types__["a" /* defaultProps */];
/* harmony default export */ __webpack_exports__["a"] = (Object(__WEBPACK_IMPORTED_MODULE_1__enhancer__["a" /* default */])(Line));

/***/ }),

/***/ 1170:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_react__ = __webpack_require__(0);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_react___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_0_react__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_prop_types__ = __webpack_require__(1);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_prop_types___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_1_prop_types__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2__enhancer__ = __webpack_require__(1035);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3__types__ = __webpack_require__(1036);
function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(source, true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(source).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }

function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }

function _objectWithoutProperties(source, excluded) { if (source == null) return {}; var target = _objectWithoutPropertiesLoose(source, excluded); var key, i; if (Object.getOwnPropertySymbols) { var sourceSymbolKeys = Object.getOwnPropertySymbols(source); for (i = 0; i < sourceSymbolKeys.length; i++) { key = sourceSymbolKeys[i]; if (excluded.indexOf(key) >= 0) continue; if (!Object.prototype.propertyIsEnumerable.call(source, key)) continue; target[key] = source[key]; } } return target; }

function _objectWithoutPropertiesLoose(source, excluded) { if (source == null) return {}; var target = {}; var sourceKeys = Object.keys(source); var key, i; for (i = 0; i < sourceKeys.length; i++) { key = sourceKeys[i]; if (excluded.indexOf(key) >= 0) continue; target[key] = source[key]; } return target; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (typeof call === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

/* eslint react/prop-types: 0 */




var gradientSeed = 0;

function stripPercentToNumber(percent) {
  return +percent.replace('%', '');
}

function toArray(symArray) {
  return Array.isArray(symArray) ? symArray : [symArray];
}

function getPathStyles(offset, percent, strokeColor, strokeWidth) {
  var gapDegree = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : 0;
  var gapPosition = arguments.length > 5 ? arguments[5] : undefined;
  var radius = 50 - strokeWidth / 2;
  var beginPositionX = 0;
  var beginPositionY = -radius;
  var endPositionX = 0;
  var endPositionY = -2 * radius;

  switch (gapPosition) {
    case 'left':
      beginPositionX = -radius;
      beginPositionY = 0;
      endPositionX = 2 * radius;
      endPositionY = 0;
      break;

    case 'right':
      beginPositionX = radius;
      beginPositionY = 0;
      endPositionX = -2 * radius;
      endPositionY = 0;
      break;

    case 'bottom':
      beginPositionY = radius;
      endPositionY = 2 * radius;
      break;

    default:
  }

  var pathString = "M 50,50 m ".concat(beginPositionX, ",").concat(beginPositionY, "\n   a ").concat(radius, ",").concat(radius, " 0 1 1 ").concat(endPositionX, ",").concat(-endPositionY, "\n   a ").concat(radius, ",").concat(radius, " 0 1 1 ").concat(-endPositionX, ",").concat(endPositionY);
  var len = Math.PI * 2 * radius;
  var pathStyle = {
    stroke: strokeColor,
    strokeDasharray: "".concat(percent / 100 * (len - gapDegree), "px ").concat(len, "px"),
    strokeDashoffset: "-".concat(gapDegree / 2 + offset / 100 * (len - gapDegree), "px"),
    transition: 'stroke-dashoffset .3s ease 0s, stroke-dasharray .3s ease 0s, stroke .3s, stroke-width .06s ease .3s' // eslint-disable-line

  };
  return {
    pathString: pathString,
    pathStyle: pathStyle
  };
}

var Circle =
/*#__PURE__*/
function (_Component) {
  _inherits(Circle, _Component);

  function Circle() {
    var _this;

    _classCallCheck(this, Circle);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(Circle).call(this));

    _defineProperty(_assertThisInitialized(_this), "paths", {});

    _defineProperty(_assertThisInitialized(_this), "gradientId", 0);

    _this.gradientId = gradientSeed;
    gradientSeed += 1;
    return _this;
  }

  _createClass(Circle, [{
    key: "getStokeList",
    value: function getStokeList() {
      var _this2 = this;

      var _this$props = this.props,
          prefixCls = _this$props.prefixCls,
          percent = _this$props.percent,
          strokeColor = _this$props.strokeColor,
          strokeWidth = _this$props.strokeWidth,
          strokeLinecap = _this$props.strokeLinecap,
          gapDegree = _this$props.gapDegree,
          gapPosition = _this$props.gapPosition;
      var percentList = toArray(percent);
      var strokeColorList = toArray(strokeColor);
      var stackPtg = 0;
      return percentList.map(function (ptg, index) {
        var color = strokeColorList[index] || strokeColorList[strokeColorList.length - 1];
        var stroke = Object.prototype.toString.call(color) === '[object Object]' ? "url(#".concat(prefixCls, "-gradient-").concat(_this2.gradientId, ")") : '';

        var _getPathStyles = getPathStyles(stackPtg, ptg, color, strokeWidth, gapDegree, gapPosition),
            pathString = _getPathStyles.pathString,
            pathStyle = _getPathStyles.pathStyle;

        stackPtg += ptg;
        return __WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement("path", {
          key: index,
          className: "".concat(prefixCls, "-circle-path"),
          d: pathString,
          stroke: stroke,
          strokeLinecap: strokeLinecap,
          strokeWidth: ptg === 0 ? 0 : strokeWidth,
          fillOpacity: "0",
          style: pathStyle,
          ref: function ref(path) {
            _this2.paths[index] = path;
          }
        });
      });
    }
  }, {
    key: "render",
    value: function render() {
      var _this$props2 = this.props,
          prefixCls = _this$props2.prefixCls,
          strokeWidth = _this$props2.strokeWidth,
          trailWidth = _this$props2.trailWidth,
          gapDegree = _this$props2.gapDegree,
          gapPosition = _this$props2.gapPosition,
          trailColor = _this$props2.trailColor,
          strokeLinecap = _this$props2.strokeLinecap,
          style = _this$props2.style,
          className = _this$props2.className,
          strokeColor = _this$props2.strokeColor,
          restProps = _objectWithoutProperties(_this$props2, ["prefixCls", "strokeWidth", "trailWidth", "gapDegree", "gapPosition", "trailColor", "strokeLinecap", "style", "className", "strokeColor"]);

      var _getPathStyles2 = getPathStyles(0, 100, trailColor, strokeWidth, gapDegree, gapPosition),
          pathString = _getPathStyles2.pathString,
          pathStyle = _getPathStyles2.pathStyle;

      delete restProps.percent;
      var strokeColorList = toArray(strokeColor);
      var gradient = strokeColorList.find(function (color) {
        return Object.prototype.toString.call(color) === '[object Object]';
      });
      return __WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement("svg", _extends({
        className: "".concat(prefixCls, "-circle ").concat(className),
        viewBox: "0 0 100 100",
        style: style
      }, restProps), gradient && __WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement("defs", null, __WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement("linearGradient", {
        id: "".concat(prefixCls, "-gradient-").concat(this.gradientId),
        x1: "100%",
        y1: "0%",
        x2: "0%",
        y2: "0%"
      }, Object.keys(gradient).sort(function (a, b) {
        return stripPercentToNumber(a) - stripPercentToNumber(b);
      }).map(function (key, index) {
        return __WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement("stop", {
          key: index,
          offset: key,
          stopColor: gradient[key]
        });
      }))), __WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement("path", {
        className: "".concat(prefixCls, "-circle-trail"),
        d: pathString,
        stroke: trailColor,
        strokeLinecap: strokeLinecap,
        strokeWidth: trailWidth || strokeWidth,
        fillOpacity: "0",
        style: pathStyle
      }), this.getStokeList().reverse());
    }
  }]);

  return Circle;
}(__WEBPACK_IMPORTED_MODULE_0_react__["Component"]);

Circle.propTypes = _objectSpread({}, __WEBPACK_IMPORTED_MODULE_3__types__["b" /* propTypes */], {
  gapPosition: __WEBPACK_IMPORTED_MODULE_1_prop_types___default.a.oneOf(['top', 'bottom', 'left', 'right'])
});
Circle.defaultProps = _objectSpread({}, __WEBPACK_IMPORTED_MODULE_3__types__["a" /* defaultProps */], {
  gapPosition: 'top'
});
/* harmony default export */ __webpack_exports__["a"] = (Object(__WEBPACK_IMPORTED_MODULE_2__enhancer__["a" /* default */])(Circle));

/***/ }),

/***/ 1171:
/***/ (function(module, exports, __webpack_require__) {

var toFinite = __webpack_require__(1175);

/**
 * Converts `value` to an integer.
 *
 * **Note:** This method is loosely based on
 * [`ToInteger`](http://www.ecma-international.org/ecma-262/7.0/#sec-tointeger).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to convert.
 * @returns {number} Returns the converted integer.
 * @example
 *
 * _.toInteger(3.2);
 * // => 3
 *
 * _.toInteger(Number.MIN_VALUE);
 * // => 0
 *
 * _.toInteger(Infinity);
 * // => 1.7976931348623157e+308
 *
 * _.toInteger('3.2');
 * // => 3
 */
function toInteger(value) {
  var result = toFinite(value),
      remainder = result % 1;

  return result === result ? (remainder ? result - remainder : result) : 0;
}

module.exports = toInteger;


/***/ }),

/***/ 1173:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_antd_lib_tooltip_style_css__ = __webpack_require__(175);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_antd_lib_tooltip_style_css___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_0_antd_lib_tooltip_style_css__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_antd_lib_tooltip__ = __webpack_require__(174);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_antd_lib_tooltip___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_1_antd_lib_tooltip__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2_react__ = __webpack_require__(0);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2_react___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_2_react__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3__css_Courses_css__ = __webpack_require__(332);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3__css_Courses_css___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_3__css_Courses_css__);
var _createClass=function(){function defineProperties(target,props){for(var i=0;i<props.length;i++){var descriptor=props[i];descriptor.enumerable=descriptor.enumerable||false;descriptor.configurable=true;if("value"in descriptor)descriptor.writable=true;Object.defineProperty(target,descriptor.key,descriptor);}}return function(Constructor,protoProps,staticProps){if(protoProps)defineProperties(Constructor.prototype,protoProps);if(staticProps)defineProperties(Constructor,staticProps);return Constructor;};}();function _classCallCheck(instance,Constructor){if(!(instance instanceof Constructor)){throw new TypeError("Cannot call a class as a function");}}function _possibleConstructorReturn(self,call){if(!self){throw new ReferenceError("this hasn't been initialised - super() hasn't been called");}return call&&(typeof call==="object"||typeof call==="function")?call:self;}function _inherits(subClass,superClass){if(typeof superClass!=="function"&&superClass!==null){throw new TypeError("Super expression must either be null or a function, not "+typeof superClass);}subClass.prototype=Object.create(superClass&&superClass.prototype,{constructor:{value:subClass,enumerable:false,writable:true,configurable:true}});if(superClass)Object.setPrototypeOf?Object.setPrototypeOf(subClass,superClass):subClass.__proto__=superClass;}var CoursesListType=function(_Component){_inherits(CoursesListType,_Component);function CoursesListType(props){_classCallCheck(this,CoursesListType);var _this=_possibleConstructorReturn(this,(CoursesListType.__proto__||Object.getPrototypeOf(CoursesListType)).call(this,props));_this.state={// typelist:[],
// typesylename:"",
// tipval:""
};return _this;}_createClass(CoursesListType,[{key:'componentDidMount',value:function componentDidMount(){// let{typelist,typesylename,tipval}=this.props;
//
// this.setState({
//   typelist:typelist,
//   typesylename:typesylename,
//   tipval:tipval
// })
// console.log("CoursesListType")
// console.log(typelist)
}},{key:'render',value:function render(){var _props=this.props,typelist=_props.typelist,typesylename=_props.typesylename,tipval=_props.tipval;return __WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{style:{display:'inline-block'}},typelist===undefined||typelist===403||typelist===401||typelist===407||typelist===408||typelist===409||typelist===500?"":typelist.map(function(item,key){return __WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_1_antd_lib_tooltip___default.a,{placement:'bottom',title:tipval,getPopupContainer:function getPopupContainer(){return document.querySelector('.TabsWarp');},key:key},__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{key:key},item==="公开"?__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{className:"edu-filter-btn edu-filter-btn-4CACFF ml15 fl typestyle "+typesylename},'\u516C\u5F00'):"",item==="已开启补交"?__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{className:"edu-filter-btn edu-filter-btn-028d01 ml15 fl typestyle "+typesylename},'\u5DF2\u5F00\u542F\u8865\u4EA4'):"",item==="未开启补交"?__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{className:"edu-filter-btn edu-filter-btn-CC317C ml15 fl typestyle "+typesylename},'\u672A\u5F00\u542F\u8865\u4EA4'):"",item==="匿名作品"?__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{className:"edu-filter-btn edu-filter-btn-006B75 ml15 fl typestyle "+typesylename},'\u533F\u540D\u4F5C\u54C1'):"",item==="已选择"?__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{className:"edu-filter-btn edu-filter-btn-EDEDED ml15 fl typestyle color666666 "+typesylename},'\u5DF2\u9009\u62E9'):"",item==="已结束"?__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{className:"edu-filter-btn edu-filter-btn-EDEDED ml15 fl typestyle color666666 "+typesylename},'\u5DF2\u7ED3\u675F'):"",item==="提交中"?__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{className:"edu-filter-btn edu-filter-btn-4CACFF ml15 fl typestyle "+typesylename},'\u63D0\u4EA4\u4E2D'):"",item==="匿评中"?__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{className:"edu-filter-btn edu-filter-btn-4CACFF ml15 fl typestyle "+typesylename},'\u533F\u8BC4\u4E2D'):"",item==="申诉中"?__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{className:"edu-filter-btn edu-filter-btn-4CACFF ml15 fl typestyle "+typesylename},'\u7533\u8BC9\u4E2D'):"",item==="补交中"?__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{className:"edu-filter-btn edu-filter-btn-4CACFF ml15 fl typestyle "+typesylename},'\u8865\u4EA4\u4E2D'):"",item==="评阅中"?__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{className:"edu-filter-btn edu-filter-btn-4CACFF ml15 fl typestyle "+typesylename},'\u8BC4\u9605\u4E2D'):"",item==="待选中"?__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{className:"edu-filter-btn edu-filter-btn-4CACFF ml15 fl typestyle "+typesylename},'\u5F85\u9009\u4E2D'):"",item==="交叉评阅中"?__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{className:"edu-filter-btn edu-filter-btn-4CACFF ml15 fl typestyle "+typesylename},'\u4EA4\u53C9\u8BC4\u9605\u4E2D'):"",item==="已开启交叉评阅"?__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{className:"edu-filter-btn edu-filter-btn-E99695 ml15 fl typestyle "+typesylename},'\u5DF2\u5F00\u542F\u4EA4\u53C9\u8BC4\u9605'):"",item==="待确认"?__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{className:"edu-filter-btn edu-filter-btn-5E5FB9 ml15 fl typestyle "+typesylename},'\u5F85\u786E\u8BA4'):"",item==="待处理"?__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{className:"edu-filter-btn edu-filter-btn-5E5FB9 ml15 fl typestyle mr10 "+typesylename},'\u5F85\u5904\u7406'):"",item==="未发布"?__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{className:"edu-filter-btn edu-filter-btn-84B6EB ml15 fl typestyle "+typesylename},'\u672A\u53D1\u5E03'):"",item==="私有"?__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{className:"edu-filter-btn edu-filter-btn-84B6EB ml15 fl typestyle "+typesylename},'\u79C1\u6709'):"",item==="未提交"?__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{className:"edu-filter-btn edu-filter-btn-84B6EB ml15 fl typestyle "+typesylename},'\u672A\u63D0\u4EA4'):"",item==="已确认"?__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{className:"edu-filter-btn edu-filter-btn-FC2B6A ml15 fl typestyle "+typesylename},'\u5DF2\u786E\u8BA4'):"",item==="已截止"?__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{className:"edu-filter-btn edu-filter-btn-FC2B6A ml15 fl typestyle "+typesylename},'\u5DF2\u622A\u6B62'):"",item==="开放课程"?__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{className:"edu-filter-btn edu-filter-btn-FF6800 ml15 fl typestyle "+typesylename},'\u5F00\u653E\u8BFE\u7A0B'):""));}));}}]);return CoursesListType;}(__WEBPACK_IMPORTED_MODULE_2_react__["Component"]);/* harmony default export */ __webpack_exports__["a"] = (CoursesListType);// let typelist=["公开",
//               "已开启补交",
//               "未开启补交",
//               "匿名作品",
//               "已选择",
//               "已结束",
//               "提交中",
//               "匿评中",
//               "申诉中",
//               "补交中",
//               "评阅中",
//               "待选中",
//               "交叉评阅中",
//               "已开启交叉评阅",
//               "待确认",
//               "待处理",
//               "未发布",
//               "私有",
//               "未提交",
//               "已确认",
//               "已截止",
//             ]

/***/ }),

/***/ 1174:
/***/ (function(module, exports) {

/**
 * The base implementation of `_.property` without support for deep paths.
 *
 * @private
 * @param {string} key The key of the property to get.
 * @returns {Function} Returns the new accessor function.
 */
function baseProperty(key) {
  return function(object) {
    return object == null ? undefined : object[key];
  };
}

module.exports = baseProperty;


/***/ }),

/***/ 1175:
/***/ (function(module, exports, __webpack_require__) {

var toNumber = __webpack_require__(342);

/** Used as references for various `Number` constants. */
var INFINITY = 1 / 0,
    MAX_INTEGER = 1.7976931348623157e+308;

/**
 * Converts `value` to a finite number.
 *
 * @static
 * @memberOf _
 * @since 4.12.0
 * @category Lang
 * @param {*} value The value to convert.
 * @returns {number} Returns the converted number.
 * @example
 *
 * _.toFinite(3.2);
 * // => 3.2
 *
 * _.toFinite(Number.MIN_VALUE);
 * // => 5e-324
 *
 * _.toFinite(Infinity);
 * // => 1.7976931348623157e+308
 *
 * _.toFinite('3.2');
 * // => 3.2
 */
function toFinite(value) {
  if (!value) {
    return value === 0 ? value : 0;
  }
  value = toNumber(value);
  if (value === INFINITY || value === -INFINITY) {
    var sign = (value < 0 ? -1 : 1);
    return sign * MAX_INTEGER;
  }
  return value === value ? value : 0;
}

module.exports = toFinite;


/***/ }),

/***/ 1178:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


__webpack_require__(31);

__webpack_require__(1333);
//# sourceMappingURL=css.js.map


/***/ }),

/***/ 1179:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;

var React = _interopRequireWildcard(__webpack_require__(0));

var _classnames = _interopRequireDefault(__webpack_require__(3));

var _rcInputNumber = _interopRequireDefault(__webpack_require__(1335));

var _icon = _interopRequireDefault(__webpack_require__(27));

var _configProvider = __webpack_require__(14);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function _getRequireWildcardCache() { return cache; }; return cache; }

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== "object" && typeof obj !== "function") { return { "default": obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj["default"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }

function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var __rest = void 0 && (void 0).__rest || function (s, e) {
  var t = {};

  for (var p in s) {
    if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0) t[p] = s[p];
  }

  if (s != null && typeof Object.getOwnPropertySymbols === "function") for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
    if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i])) t[p[i]] = s[p[i]];
  }
  return t;
};

var InputNumber =
/*#__PURE__*/
function (_React$Component) {
  _inherits(InputNumber, _React$Component);

  function InputNumber() {
    var _this;

    _classCallCheck(this, InputNumber);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(InputNumber).apply(this, arguments));

    _this.saveInputNumber = function (inputNumberRef) {
      _this.inputNumberRef = inputNumberRef;
    };

    _this.renderInputNumber = function (_ref) {
      var _classNames;

      var getPrefixCls = _ref.getPrefixCls;

      var _a = _this.props,
          className = _a.className,
          size = _a.size,
          customizePrefixCls = _a.prefixCls,
          others = __rest(_a, ["className", "size", "prefixCls"]);

      var prefixCls = getPrefixCls('input-number', customizePrefixCls);
      var inputNumberClass = (0, _classnames["default"])((_classNames = {}, _defineProperty(_classNames, "".concat(prefixCls, "-lg"), size === 'large'), _defineProperty(_classNames, "".concat(prefixCls, "-sm"), size === 'small'), _classNames), className);
      var upIcon = React.createElement(_icon["default"], {
        type: "up",
        className: "".concat(prefixCls, "-handler-up-inner")
      });
      var downIcon = React.createElement(_icon["default"], {
        type: "down",
        className: "".concat(prefixCls, "-handler-down-inner")
      });
      return React.createElement(_rcInputNumber["default"], _extends({
        ref: _this.saveInputNumber,
        className: inputNumberClass,
        upHandler: upIcon,
        downHandler: downIcon,
        prefixCls: prefixCls
      }, others));
    };

    return _this;
  }

  _createClass(InputNumber, [{
    key: "focus",
    value: function focus() {
      this.inputNumberRef.focus();
    }
  }, {
    key: "blur",
    value: function blur() {
      this.inputNumberRef.blur();
    }
  }, {
    key: "render",
    value: function render() {
      return React.createElement(_configProvider.ConfigConsumer, null, this.renderInputNumber);
    }
  }]);

  return InputNumber;
}(React.Component);

exports["default"] = InputNumber;
InputNumber.defaultProps = {
  step: 1
};
//# sourceMappingURL=index.js.map


/***/ }),

/***/ 1181:
/***/ (function(module, exports, __webpack_require__) {

// style-loader: Adds some css to the DOM by adding a <style> tag

// load the styles
var content = __webpack_require__(1182);
if(typeof content === 'string') content = [[module.i, content, '']];
// Prepare cssTransformation
var transform;

var options = {"hmr":false}
options.transform = transform
// add the styles to the DOM
var update = __webpack_require__(318)(content, options);
if(content.locals) module.exports = content.locals;


/***/ }),

/***/ 1182:
/***/ (function(module, exports, __webpack_require__) {

exports = module.exports = __webpack_require__(317)(true);
// imports


// module
exports.push([module.i, ".ant-upload{-webkit-box-sizing:border-box;box-sizing:border-box;margin:0;padding:0;color:rgba(0,0,0,.65);font-size:14px;font-variant:tabular-nums;line-height:1.5;list-style:none;-webkit-font-feature-settings:\"tnum\";font-feature-settings:\"tnum\";outline:0}.ant-upload p{margin:0}.ant-upload-btn{display:block;width:100%;outline:none}.ant-upload input[type=file]{cursor:pointer}.ant-upload.ant-upload-select{display:inline-block}.ant-upload.ant-upload-disabled{cursor:not-allowed}.ant-upload.ant-upload-select-picture-card{display:table;float:left;width:104px;height:104px;margin-right:8px;margin-bottom:8px;text-align:center;vertical-align:top;background-color:#fafafa;border:1px dashed #d9d9d9;border-radius:4px;cursor:pointer;-webkit-transition:border-color .3s ease;-o-transition:border-color .3s ease;transition:border-color .3s ease}.ant-upload.ant-upload-select-picture-card>.ant-upload{display:table-cell;width:100%;height:100%;padding:8px;text-align:center;vertical-align:middle}.ant-upload.ant-upload-select-picture-card:hover{border-color:#1890ff}.ant-upload.ant-upload-drag{position:relative;width:100%;height:100%;text-align:center;background:#fafafa;border:1px dashed #d9d9d9;border-radius:4px;cursor:pointer;-webkit-transition:border-color .3s;-o-transition:border-color .3s;transition:border-color .3s}.ant-upload.ant-upload-drag .ant-upload{padding:16px 0}.ant-upload.ant-upload-drag.ant-upload-drag-hover:not(.ant-upload-disabled){border-color:#096dd9}.ant-upload.ant-upload-drag.ant-upload-disabled{cursor:not-allowed}.ant-upload.ant-upload-drag .ant-upload-btn{display:table;height:100%}.ant-upload.ant-upload-drag .ant-upload-drag-container{display:table-cell;vertical-align:middle}.ant-upload.ant-upload-drag:not(.ant-upload-disabled):hover{border-color:#40a9ff}.ant-upload.ant-upload-drag p.ant-upload-drag-icon{margin-bottom:20px}.ant-upload.ant-upload-drag p.ant-upload-drag-icon .anticon{color:#40a9ff;font-size:48px}.ant-upload.ant-upload-drag p.ant-upload-text{margin:0 0 4px;color:rgba(0,0,0,.85);font-size:16px}.ant-upload.ant-upload-drag p.ant-upload-hint{color:rgba(0,0,0,.45);font-size:14px}.ant-upload.ant-upload-drag .anticon-plus{color:rgba(0,0,0,.25);font-size:30px;-webkit-transition:all .3s;-o-transition:all .3s;transition:all .3s}.ant-upload.ant-upload-drag .anticon-plus:hover,.ant-upload.ant-upload-drag:hover .anticon-plus{color:rgba(0,0,0,.45)}.ant-upload-picture-card-wrapper{zoom:1;display:inline-block;width:100%}.ant-upload-picture-card-wrapper:after,.ant-upload-picture-card-wrapper:before{display:table;content:\"\"}.ant-upload-picture-card-wrapper:after{clear:both}.ant-upload-list{-webkit-box-sizing:border-box;box-sizing:border-box;margin:0;padding:0;color:rgba(0,0,0,.65);font-size:14px;font-variant:tabular-nums;line-height:1.5;list-style:none;-webkit-font-feature-settings:\"tnum\";font-feature-settings:\"tnum\";zoom:1}.ant-upload-list:after,.ant-upload-list:before{display:table;content:\"\"}.ant-upload-list:after{clear:both}.ant-upload-list-item-list-type-text:hover .ant-upload-list-item-name-icon-count-1{padding-right:14px}.ant-upload-list-item-list-type-text:hover .ant-upload-list-item-name-icon-count-2{padding-right:28px}.ant-upload-list-item{position:relative;height:22px;margin-top:8px;font-size:14px}.ant-upload-list-item-name{display:inline-block;width:100%;padding-left:22px;overflow:hidden;white-space:nowrap;-o-text-overflow:ellipsis;text-overflow:ellipsis}.ant-upload-list-item-name-icon-count-1{padding-right:14px}.ant-upload-list-item-card-actions{position:absolute;right:0;opacity:0}.ant-upload-list-item-card-actions.picture{top:25px;line-height:1;opacity:1}.ant-upload-list-item-card-actions .anticon{padding-right:5px;color:rgba(0,0,0,.45)}.ant-upload-list-item-info{height:100%;padding:0 12px 0 4px;-webkit-transition:background-color .3s;-o-transition:background-color .3s;transition:background-color .3s}.ant-upload-list-item-info>span{display:block;width:100%;height:100%}.ant-upload-list-item-info .anticon-loading,.ant-upload-list-item-info .anticon-paper-clip{position:absolute;top:5px;color:rgba(0,0,0,.45);font-size:14px}.ant-upload-list-item .anticon-close{display:inline-block;font-size:12px;font-size:10px\\9;-webkit-transform:scale(.83333333) rotate(0deg);-ms-transform:scale(.83333333) rotate(0deg);transform:scale(.83333333) rotate(0deg);position:absolute;top:6px;right:4px;color:rgba(0,0,0,.45);line-height:0;cursor:pointer;opacity:0;-webkit-transition:all .3s;-o-transition:all .3s;transition:all .3s}:root .ant-upload-list-item .anticon-close{font-size:12px}.ant-upload-list-item .anticon-close:hover{color:rgba(0,0,0,.65)}.ant-upload-list-item:hover .ant-upload-list-item-info{background-color:#e6f7ff}.ant-upload-list-item:hover .ant-upload-list-item-card-actions,.ant-upload-list-item:hover .anticon-close{opacity:1}.ant-upload-list-item-error,.ant-upload-list-item-error .ant-upload-list-item-name,.ant-upload-list-item-error .anticon-paper-clip{color:#f5222d}.ant-upload-list-item-error .ant-upload-list-item-card-actions{opacity:1}.ant-upload-list-item-error .ant-upload-list-item-card-actions .anticon{padding-right:5px;color:#f5222d}.ant-upload-list-item-progress{position:absolute;bottom:-12px;width:100%;padding-left:26px;font-size:14px;line-height:0}.ant-upload-list-picture-card .ant-upload-list-item,.ant-upload-list-picture .ant-upload-list-item{position:relative;height:66px;padding:8px;border:1px solid #d9d9d9;border-radius:4px}.ant-upload-list-picture-card .ant-upload-list-item:hover,.ant-upload-list-picture .ant-upload-list-item:hover{background:transparent}.ant-upload-list-picture-card .ant-upload-list-item-error,.ant-upload-list-picture .ant-upload-list-item-error{border-color:#f5222d}.ant-upload-list-picture-card .ant-upload-list-item-info,.ant-upload-list-picture .ant-upload-list-item-info{padding:0}.ant-upload-list-picture-card .ant-upload-list-item:hover .ant-upload-list-item-info,.ant-upload-list-picture .ant-upload-list-item:hover .ant-upload-list-item-info{background:transparent}.ant-upload-list-picture-card .ant-upload-list-item-uploading,.ant-upload-list-picture .ant-upload-list-item-uploading{border-style:dashed}.ant-upload-list-picture-card .ant-upload-list-item-thumbnail,.ant-upload-list-picture .ant-upload-list-item-thumbnail{position:absolute;top:8px;left:8px;width:48px;height:48px;font-size:26px;line-height:54px;text-align:center;opacity:.8}.ant-upload-list-picture-card .ant-upload-list-item-icon,.ant-upload-list-picture .ant-upload-list-item-icon{position:absolute;top:50%;left:50%;font-size:26px;-webkit-transform:translate(-50%,-50%);-ms-transform:translate(-50%,-50%);transform:translate(-50%,-50%)}.ant-upload-list-picture-card .ant-upload-list-item-image,.ant-upload-list-picture .ant-upload-list-item-image{max-width:100%}.ant-upload-list-picture-card .ant-upload-list-item-thumbnail img,.ant-upload-list-picture .ant-upload-list-item-thumbnail img{display:block;width:48px;height:48px;overflow:hidden}.ant-upload-list-picture-card .ant-upload-list-item-name,.ant-upload-list-picture .ant-upload-list-item-name{display:inline-block;-webkit-box-sizing:border-box;box-sizing:border-box;max-width:100%;margin:0 0 0 8px;padding-right:8px;padding-left:48px;overflow:hidden;line-height:44px;white-space:nowrap;-o-text-overflow:ellipsis;text-overflow:ellipsis;-webkit-transition:all .3s;-o-transition:all .3s;transition:all .3s}.ant-upload-list-picture-card .ant-upload-list-item-name-icon-count-1,.ant-upload-list-picture .ant-upload-list-item-name-icon-count-1{padding-right:18px}.ant-upload-list-picture-card .ant-upload-list-item-name-icon-count-2,.ant-upload-list-picture .ant-upload-list-item-name-icon-count-2{padding-right:36px}.ant-upload-list-picture-card .ant-upload-list-item-uploading .ant-upload-list-item-name,.ant-upload-list-picture .ant-upload-list-item-uploading .ant-upload-list-item-name{line-height:28px}.ant-upload-list-picture-card .ant-upload-list-item-progress,.ant-upload-list-picture .ant-upload-list-item-progress{bottom:14px;width:calc(100% - 24px);margin-top:0;padding-left:56px}.ant-upload-list-picture-card .anticon-close,.ant-upload-list-picture .anticon-close{position:absolute;top:8px;right:8px;line-height:1;opacity:1}.ant-upload-list-picture-card.ant-upload-list:after{display:none}.ant-upload-list-picture-card-container,.ant-upload-list-picture-card .ant-upload-list-item{float:left;width:104px;height:104px;margin:0 8px 8px 0}.ant-upload-list-picture-card .ant-upload-list-item-info{position:relative;height:100%;overflow:hidden}.ant-upload-list-picture-card .ant-upload-list-item-info:before{position:absolute;z-index:1;width:100%;height:100%;background-color:rgba(0,0,0,.5);opacity:0;-webkit-transition:all .3s;-o-transition:all .3s;transition:all .3s;content:\" \"}.ant-upload-list-picture-card .ant-upload-list-item:hover .ant-upload-list-item-info:before{opacity:1}.ant-upload-list-picture-card .ant-upload-list-item-actions{position:absolute;top:50%;left:50%;z-index:10;white-space:nowrap;-webkit-transform:translate(-50%,-50%);-ms-transform:translate(-50%,-50%);transform:translate(-50%,-50%);opacity:0;-webkit-transition:all .3s;-o-transition:all .3s;transition:all .3s}.ant-upload-list-picture-card .ant-upload-list-item-actions .anticon-delete,.ant-upload-list-picture-card .ant-upload-list-item-actions .anticon-download,.ant-upload-list-picture-card .ant-upload-list-item-actions .anticon-eye-o{z-index:10;width:16px;margin:0 4px;color:hsla(0,0%,100%,.85);font-size:16px;cursor:pointer;-webkit-transition:all .3s;-o-transition:all .3s;transition:all .3s}.ant-upload-list-picture-card .ant-upload-list-item-actions .anticon-delete:hover,.ant-upload-list-picture-card .ant-upload-list-item-actions .anticon-download:hover,.ant-upload-list-picture-card .ant-upload-list-item-actions .anticon-eye-o:hover{color:#fff}.ant-upload-list-picture-card .ant-upload-list-item-actions:hover,.ant-upload-list-picture-card .ant-upload-list-item-info:hover+.ant-upload-list-item-actions{opacity:1}.ant-upload-list-picture-card .ant-upload-list-item-thumbnail,.ant-upload-list-picture-card .ant-upload-list-item-thumbnail img{position:static;display:block;width:100%;height:100%;-o-object-fit:cover;object-fit:cover}.ant-upload-list-picture-card .ant-upload-list-item-name{display:none;margin:8px 0 0;padding:0;line-height:1.5;text-align:center}.ant-upload-list-picture-card .anticon-picture+.ant-upload-list-item-name{position:absolute;bottom:10px;display:block}.ant-upload-list-picture-card .ant-upload-list-item-uploading.ant-upload-list-item{background-color:#fafafa}.ant-upload-list-picture-card .ant-upload-list-item-uploading .ant-upload-list-item-info{height:auto}.ant-upload-list-picture-card .ant-upload-list-item-uploading .ant-upload-list-item-info .anticon-delete,.ant-upload-list-picture-card .ant-upload-list-item-uploading .ant-upload-list-item-info .anticon-eye-o,.ant-upload-list-picture-card .ant-upload-list-item-uploading .ant-upload-list-item-info:before{display:none}.ant-upload-list-picture-card .ant-upload-list-item-uploading-text{margin-top:18px;color:rgba(0,0,0,.45)}.ant-upload-list-picture-card .ant-upload-list-item-progress{bottom:32px;padding-left:0}.ant-upload-list .ant-upload-success-icon{color:#52c41a;font-weight:700}.ant-upload-list .ant-upload-animate-enter,.ant-upload-list .ant-upload-animate-inline-enter,.ant-upload-list .ant-upload-animate-inline-leave,.ant-upload-list .ant-upload-animate-leave{-webkit-animation-duration:.3s;animation-duration:.3s;-webkit-animation-fill-mode:cubic-bezier(.78,.14,.15,.86);animation-fill-mode:cubic-bezier(.78,.14,.15,.86)}.ant-upload-list .ant-upload-animate-enter{-webkit-animation-name:uploadAnimateIn;animation-name:uploadAnimateIn}.ant-upload-list .ant-upload-animate-leave{-webkit-animation-name:uploadAnimateOut;animation-name:uploadAnimateOut}.ant-upload-list .ant-upload-animate-inline-enter{-webkit-animation-name:uploadAnimateInlineIn;animation-name:uploadAnimateInlineIn}.ant-upload-list .ant-upload-animate-inline-leave{-webkit-animation-name:uploadAnimateInlineOut;animation-name:uploadAnimateInlineOut}@-webkit-keyframes uploadAnimateIn{0%{height:0;margin:0;padding:0;opacity:0}}@keyframes uploadAnimateIn{0%{height:0;margin:0;padding:0;opacity:0}}@-webkit-keyframes uploadAnimateOut{to{height:0;margin:0;padding:0;opacity:0}}@keyframes uploadAnimateOut{to{height:0;margin:0;padding:0;opacity:0}}@-webkit-keyframes uploadAnimateInlineIn{0%{width:0;height:0;margin:0;padding:0;opacity:0}}@keyframes uploadAnimateInlineIn{0%{width:0;height:0;margin:0;padding:0;opacity:0}}@-webkit-keyframes uploadAnimateInlineOut{to{width:0;height:0;margin:0;padding:0;opacity:0}}@keyframes uploadAnimateInlineOut{to{width:0;height:0;margin:0;padding:0;opacity:0}}", "", 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stylelint-disable at-rule-empty-line-before,at-rule-name-space-after,at-rule-no-unknown */\n/* stylelint-disable no-duplicate-selectors */\n/* stylelint-disable */\n/* stylelint-disable declaration-bang-space-before,no-duplicate-selectors,string-no-newline */\n.ant-upload {\n  -webkit-box-sizing: border-box;\n          box-sizing: border-box;\n  margin: 0;\n  padding: 0;\n  color: rgba(0, 0, 0, 0.65);\n  font-size: 14px;\n  font-variant: tabular-nums;\n  line-height: 1.5;\n  list-style: none;\n  -webkit-font-feature-settings: 'tnum';\n          font-feature-settings: 'tnum';\n  outline: 0;\n}\n.ant-upload p {\n  margin: 0;\n}\n.ant-upload-btn {\n  display: block;\n  width: 100%;\n  outline: none;\n}\n.ant-upload input[type='file'] {\n  cursor: pointer;\n}\n.ant-upload.ant-upload-select {\n  display: inline-block;\n}\n.ant-upload.ant-upload-disabled {\n  cursor: not-allowed;\n}\n.ant-upload.ant-upload-select-picture-card {\n  display: table;\n  float: left;\n  width: 104px;\n  height: 104px;\n  margin-right: 8px;\n  margin-bottom: 8px;\n  text-align: center;\n  vertical-align: top;\n  background-color: #fafafa;\n  border: 1px dashed #d9d9d9;\n  border-radius: 4px;\n  cursor: pointer;\n  -webkit-transition: border-color 0.3s ease;\n  -o-transition: border-color 0.3s ease;\n  transition: border-color 0.3s ease;\n}\n.ant-upload.ant-upload-select-picture-card > .ant-upload {\n  display: table-cell;\n  width: 100%;\n  height: 100%;\n  padding: 8px;\n  text-align: center;\n  vertical-align: middle;\n}\n.ant-upload.ant-upload-select-picture-card:hover {\n  border-color: #1890ff;\n}\n.ant-upload.ant-upload-drag {\n  position: relative;\n  width: 100%;\n  height: 100%;\n  text-align: center;\n  background: #fafafa;\n  border: 1px dashed #d9d9d9;\n  border-radius: 4px;\n  cursor: pointer;\n  -webkit-transition: border-color 0.3s;\n  -o-transition: border-color 0.3s;\n  transition: border-color 0.3s;\n}\n.ant-upload.ant-upload-drag .ant-upload {\n  padding: 16px 0;\n}\n.ant-upload.ant-upload-drag.ant-upload-drag-hover:not(.ant-upload-disabled) {\n  border-color: #096dd9;\n}\n.ant-upload.ant-upload-drag.ant-upload-disabled {\n  cursor: not-allowed;\n}\n.ant-upload.ant-upload-drag .ant-upload-btn {\n  display: table;\n  height: 100%;\n}\n.ant-upload.ant-upload-drag .ant-upload-drag-container {\n  display: table-cell;\n  vertical-align: middle;\n}\n.ant-upload.ant-upload-drag:not(.ant-upload-disabled):hover {\n  border-color: #40a9ff;\n}\n.ant-upload.ant-upload-drag p.ant-upload-drag-icon {\n  margin-bottom: 20px;\n}\n.ant-upload.ant-upload-drag p.ant-upload-drag-icon .anticon {\n  color: #40a9ff;\n  font-size: 48px;\n}\n.ant-upload.ant-upload-drag p.ant-upload-text {\n  margin: 0 0 4px;\n  color: rgba(0, 0, 0, 0.85);\n  font-size: 16px;\n}\n.ant-upload.ant-upload-drag p.ant-upload-hint {\n  color: rgba(0, 0, 0, 0.45);\n  font-size: 14px;\n}\n.ant-upload.ant-upload-drag .anticon-plus {\n  color: rgba(0, 0, 0, 0.25);\n  font-size: 30px;\n  -webkit-transition: all 0.3s;\n  -o-transition: all 0.3s;\n  transition: all 0.3s;\n}\n.ant-upload.ant-upload-drag .anticon-plus:hover {\n  color: rgba(0, 0, 0, 0.45);\n}\n.ant-upload.ant-upload-drag:hover .anticon-plus {\n  color: rgba(0, 0, 0, 0.45);\n}\n.ant-upload-picture-card-wrapper {\n  zoom: 1;\n  display: inline-block;\n  width: 100%;\n}\n.ant-upload-picture-card-wrapper::before,\n.ant-upload-picture-card-wrapper::after {\n  display: table;\n  content: '';\n}\n.ant-upload-picture-card-wrapper::after {\n  clear: both;\n}\n.ant-upload-list {\n  -webkit-box-sizing: border-box;\n          box-sizing: border-box;\n  margin: 0;\n  padding: 0;\n  color: rgba(0, 0, 0, 0.65);\n  font-size: 14px;\n  font-variant: tabular-nums;\n  line-height: 1.5;\n  list-style: none;\n  -webkit-font-feature-settings: 'tnum';\n          font-feature-settings: 'tnum';\n  zoom: 1;\n}\n.ant-upload-list::before,\n.ant-upload-list::after {\n  display: table;\n  content: '';\n}\n.ant-upload-list::after {\n  clear: both;\n}\n.ant-upload-list-item-list-type-text:hover .ant-upload-list-item-name-icon-count-1 {\n  padding-right: 14px;\n}\n.ant-upload-list-item-list-type-text:hover .ant-upload-list-item-name-icon-count-2 {\n  padding-right: 28px;\n}\n.ant-upload-list-item {\n  position: relative;\n  height: 22px;\n  margin-top: 8px;\n  font-size: 14px;\n}\n.ant-upload-list-item-name {\n  display: inline-block;\n  width: 100%;\n  padding-left: 22px;\n  overflow: hidden;\n  white-space: nowrap;\n  -o-text-overflow: ellipsis;\n     text-overflow: ellipsis;\n}\n.ant-upload-list-item-name-icon-count-1 {\n  padding-right: 14px;\n}\n.ant-upload-list-item-card-actions {\n  position: absolute;\n  right: 0;\n  opacity: 0;\n}\n.ant-upload-list-item-card-actions.picture {\n  top: 25px;\n  line-height: 1;\n  opacity: 1;\n}\n.ant-upload-list-item-card-actions .anticon {\n  padding-right: 5px;\n  color: rgba(0, 0, 0, 0.45);\n}\n.ant-upload-list-item-info {\n  height: 100%;\n  padding: 0 12px 0 4px;\n  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48px;\n  height: 48px;\n  font-size: 26px;\n  line-height: 54px;\n  text-align: center;\n  opacity: 0.8;\n}\n.ant-upload-list-picture .ant-upload-list-item-icon,\n.ant-upload-list-picture-card .ant-upload-list-item-icon {\n  position: absolute;\n  top: 50%;\n  left: 50%;\n  font-size: 26px;\n  -webkit-transform: translate(-50%, -50%);\n      -ms-transform: translate(-50%, -50%);\n          transform: translate(-50%, -50%);\n}\n.ant-upload-list-picture .ant-upload-list-item-image,\n.ant-upload-list-picture-card .ant-upload-list-item-image {\n  max-width: 100%;\n}\n.ant-upload-list-picture .ant-upload-list-item-thumbnail img,\n.ant-upload-list-picture-card .ant-upload-list-item-thumbnail img {\n  display: block;\n  width: 48px;\n  height: 48px;\n  overflow: hidden;\n}\n.ant-upload-list-picture .ant-upload-list-item-name,\n.ant-upload-list-picture-card .ant-upload-list-item-name {\n  display: inline-block;\n  -webkit-box-sizing: border-box;\n          box-sizing: border-box;\n  max-width: 100%;\n  margin: 0 0 0 8px;\n  padding-right: 8px;\n  padding-left: 48px;\n  overflow: hidden;\n  line-height: 44px;\n  white-space: nowrap;\n  -o-text-overflow: ellipsis;\n     text-overflow: ellipsis;\n  -webkit-transition: all 0.3s;\n  -o-transition: all 0.3s;\n  transition: all 0.3s;\n}\n.ant-upload-list-picture .ant-upload-list-item-name-icon-count-1,\n.ant-upload-list-picture-card .ant-upload-list-item-name-icon-count-1 {\n  padding-right: 18px;\n}\n.ant-upload-list-picture .ant-upload-list-item-name-icon-count-2,\n.ant-upload-list-picture-card .ant-upload-list-item-name-icon-count-2 {\n  padding-right: 36px;\n}\n.ant-upload-list-picture .ant-upload-list-item-uploading .ant-upload-list-item-name,\n.ant-upload-list-picture-card .ant-upload-list-item-uploading .ant-upload-list-item-name {\n  line-height: 28px;\n}\n.ant-upload-list-picture .ant-upload-list-item-progress,\n.ant-upload-list-picture-card .ant-upload-list-item-progress {\n  bottom: 14px;\n  width: calc(100% - 24px);\n  margin-top: 0;\n  padding-left: 56px;\n}\n.ant-upload-list-picture .anticon-close,\n.ant-upload-list-picture-card .anticon-close {\n  position: absolute;\n  top: 8px;\n  right: 8px;\n  line-height: 1;\n  opacity: 1;\n}\n.ant-upload-list-picture-card.ant-upload-list::after {\n  display: none;\n}\n.ant-upload-list-picture-card-container {\n  float: left;\n  width: 104px;\n  height: 104px;\n  margin: 0 8px 8px 0;\n}\n.ant-upload-list-picture-card .ant-upload-list-item {\n  float: left;\n  width: 104px;\n  height: 104px;\n  margin: 0 8px 8px 0;\n}\n.ant-upload-list-picture-card .ant-upload-list-item-info {\n  position: relative;\n  height: 100%;\n  overflow: hidden;\n}\n.ant-upload-list-picture-card .ant-upload-list-item-info::before {\n  position: absolute;\n  z-index: 1;\n  width: 100%;\n  height: 100%;\n  background-color: rgba(0, 0, 0, 0.5);\n  opacity: 0;\n  -webkit-transition: all 0.3s;\n  -o-transition: all 0.3s;\n  transition: all 0.3s;\n  content: ' ';\n}\n.ant-upload-list-picture-card .ant-upload-list-item:hover .ant-upload-list-item-info::before {\n  opacity: 1;\n}\n.ant-upload-list-picture-card .ant-upload-list-item-actions {\n  position: absolute;\n  top: 50%;\n  left: 50%;\n  z-index: 10;\n  white-space: nowrap;\n  -webkit-transform: translate(-50%, -50%);\n      -ms-transform: translate(-50%, -50%);\n          transform: translate(-50%, -50%);\n  opacity: 0;\n  -webkit-transition: all 0.3s;\n  -o-transition: all 0.3s;\n  transition: all 0.3s;\n}\n.ant-upload-list-picture-card .ant-upload-list-item-actions .anticon-eye-o,\n.ant-upload-list-picture-card .ant-upload-list-item-actions .anticon-download,\n.ant-upload-list-picture-card .ant-upload-list-item-actions .anticon-delete {\n  z-index: 10;\n  width: 16px;\n  margin: 0 4px;\n  color: rgba(255, 255, 255, 0.85);\n  font-size: 16px;\n  cursor: pointer;\n  -webkit-transition: all 0.3s;\n  -o-transition: all 0.3s;\n  transition: all 0.3s;\n}\n.ant-upload-list-picture-card .ant-upload-list-item-actions .anticon-eye-o:hover,\n.ant-upload-list-picture-card .ant-upload-list-item-actions .anticon-download:hover,\n.ant-upload-list-picture-card .ant-upload-list-item-actions .anticon-delete:hover {\n  color: #fff;\n}\n.ant-upload-list-picture-card .ant-upload-list-item-info:hover + .ant-upload-list-item-actions,\n.ant-upload-list-picture-card .ant-upload-list-item-actions:hover {\n  opacity: 1;\n}\n.ant-upload-list-picture-card .ant-upload-list-item-thumbnail,\n.ant-upload-list-picture-card .ant-upload-list-item-thumbnail img {\n  position: static;\n  display: block;\n  width: 100%;\n  height: 100%;\n  -o-object-fit: cover;\n     object-fit: cover;\n}\n.ant-upload-list-picture-card .ant-upload-list-item-name {\n  display: none;\n  margin: 8px 0 0;\n  padding: 0;\n  line-height: 1.5;\n  text-align: center;\n}\n.ant-upload-list-picture-card .anticon-picture + .ant-upload-list-item-name {\n  position: absolute;\n  bottom: 10px;\n  display: block;\n}\n.ant-upload-list-picture-card .ant-upload-list-item-uploading.ant-upload-list-item {\n  background-color: #fafafa;\n}\n.ant-upload-list-picture-card .ant-upload-list-item-uploading .ant-upload-list-item-info {\n  height: auto;\n}\n.ant-upload-list-picture-card .ant-upload-list-item-uploading .ant-upload-list-item-info::before,\n.ant-upload-list-picture-card .ant-upload-list-item-uploading .ant-upload-list-item-info .anticon-eye-o,\n.ant-upload-list-picture-card .ant-upload-list-item-uploading .ant-upload-list-item-info .anticon-delete {\n  display: none;\n}\n.ant-upload-list-picture-card .ant-upload-list-item-uploading-text {\n  margin-top: 18px;\n  color: rgba(0, 0, 0, 0.45);\n}\n.ant-upload-list-picture-card .ant-upload-list-item-progress {\n  bottom: 32px;\n  padding-left: 0;\n}\n.ant-upload-list .ant-upload-success-icon {\n  color: #52c41a;\n  font-weight: bold;\n}\n.ant-upload-list .ant-upload-animate-enter,\n.ant-upload-list .ant-upload-animate-leave,\n.ant-upload-list .ant-upload-animate-inline-enter,\n.ant-upload-list .ant-upload-animate-inline-leave {\n  -webkit-animation-duration: 0.3s;\n          animation-duration: 0.3s;\n  -webkit-animation-fill-mode: cubic-bezier(0.78, 0.14, 0.15, 0.86);\n          animation-fill-mode: cubic-bezier(0.78, 0.14, 0.15, 0.86);\n}\n.ant-upload-list .ant-upload-animate-enter {\n  -webkit-animation-name: uploadAnimateIn;\n          animation-name: uploadAnimateIn;\n}\n.ant-upload-list .ant-upload-animate-leave {\n  -webkit-animation-name: uploadAnimateOut;\n          animation-name: uploadAnimateOut;\n}\n.ant-upload-list .ant-upload-animate-inline-enter {\n  -webkit-animation-name: uploadAnimateInlineIn;\n          animation-name: uploadAnimateInlineIn;\n}\n.ant-upload-list .ant-upload-animate-inline-leave {\n  -webkit-animation-name: uploadAnimateInlineOut;\n          animation-name: uploadAnimateInlineOut;\n}\n@-webkit-keyframes uploadAnimateIn {\n  from {\n    height: 0;\n    margin: 0;\n    padding: 0;\n    opacity: 0;\n  }\n}\n@keyframes uploadAnimateIn {\n  from {\n    height: 0;\n    margin: 0;\n    padding: 0;\n    opacity: 0;\n  }\n}\n@-webkit-keyframes uploadAnimateOut {\n  to {\n    height: 0;\n    margin: 0;\n    padding: 0;\n    opacity: 0;\n  }\n}\n@keyframes uploadAnimateOut {\n  to {\n    height: 0;\n    margin: 0;\n    padding: 0;\n    opacity: 0;\n  }\n}\n@-webkit-keyframes uploadAnimateInlineIn {\n  from {\n    width: 0;\n    height: 0;\n    margin: 0;\n    padding: 0;\n    opacity: 0;\n  }\n}\n@keyframes uploadAnimateInlineIn {\n  from {\n    width: 0;\n    height: 0;\n    margin: 0;\n    padding: 0;\n    opacity: 0;\n  }\n}\n@-webkit-keyframes uploadAnimateInlineOut {\n  to {\n    width: 0;\n    height: 0;\n    margin: 0;\n    padding: 0;\n    opacity: 0;\n  }\n}\n@keyframes uploadAnimateInlineOut {\n  to {\n    width: 0;\n    height: 0;\n    margin: 0;\n    padding: 0;\n    opacity: 0;\n  }\n}\n"],"sourceRoot":""}]);

// exports


/***/ }),

/***/ 1183:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
Object.defineProperty(__webpack_exports__, "__esModule", { value: true });
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0__Upload__ = __webpack_require__(1184);
// export this package's api


/* harmony default export */ __webpack_exports__["default"] = (__WEBPACK_IMPORTED_MODULE_0__Upload__["a" /* default */]);

/***/ }),

/***/ 1184:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_babel_runtime_helpers_extends__ = __webpack_require__(19);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_babel_runtime_helpers_extends___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_0_babel_runtime_helpers_extends__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_classCallCheck__ = __webpack_require__(11);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_classCallCheck___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_classCallCheck__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2_babel_runtime_helpers_createClass__ = __webpack_require__(34);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2_babel_runtime_helpers_createClass___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_2_babel_runtime_helpers_createClass__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3_babel_runtime_helpers_possibleConstructorReturn__ = __webpack_require__(12);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3_babel_runtime_helpers_possibleConstructorReturn___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_3_babel_runtime_helpers_possibleConstructorReturn__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_4_babel_runtime_helpers_inherits__ = __webpack_require__(13);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_4_babel_runtime_helpers_inherits___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_4_babel_runtime_helpers_inherits__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_5_react__ = __webpack_require__(0);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_5_react___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_5_react__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_6_prop_types__ = __webpack_require__(1);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_6_prop_types___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_6_prop_types__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_7__AjaxUploader__ = __webpack_require__(1185);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_8__IframeUploader__ = __webpack_require__(1189);










function empty() {}

var Upload = function (_Component) {
  __WEBPACK_IMPORTED_MODULE_4_babel_runtime_helpers_inherits___default()(Upload, _Component);

  function Upload() {
    var _ref;

    var _temp, _this, _ret;

    __WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_classCallCheck___default()(this, Upload);

    for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    return _ret = (_temp = (_this = __WEBPACK_IMPORTED_MODULE_3_babel_runtime_helpers_possibleConstructorReturn___default()(this, (_ref = Upload.__proto__ || Object.getPrototypeOf(Upload)).call.apply(_ref, [this].concat(args))), _this), _this.state = {
      Component: null
    }, _this.saveUploader = function (node) {
      _this.uploader = node;
    }, _temp), __WEBPACK_IMPORTED_MODULE_3_babel_runtime_helpers_possibleConstructorReturn___default()(_this, _ret);
  }

  __WEBPACK_IMPORTED_MODULE_2_babel_runtime_helpers_createClass___default()(Upload, [{
    key: 'componentDidMount',
    value: function componentDidMount() {
      if (this.props.supportServerRender) {
        /* eslint react/no-did-mount-set-state:0 */
        this.setState({
          Component: this.getComponent()
        }, this.props.onReady);
      }
    }
  }, {
    key: 'getComponent',
    value: function getComponent() {
      return typeof File !== 'undefined' ? __WEBPACK_IMPORTED_MODULE_7__AjaxUploader__["a" /* default */] : __WEBPACK_IMPORTED_MODULE_8__IframeUploader__["a" /* default */];
    }
  }, {
    key: 'abort',
    value: function abort(file) {
      this.uploader.abort(file);
    }
  }, {
    key: 'render',
    value: function render() {
      if (this.props.supportServerRender) {
        var _ComponentUploader = this.state.Component;
        if (_ComponentUploader) {
          return __WEBPACK_IMPORTED_MODULE_5_react___default.a.createElement(_ComponentUploader, __WEBPACK_IMPORTED_MODULE_0_babel_runtime_helpers_extends___default()({}, this.props, { ref: this.saveUploader }));
        }
        return null;
      }
      var ComponentUploader = this.getComponent();
      return __WEBPACK_IMPORTED_MODULE_5_react___default.a.createElement(ComponentUploader, __WEBPACK_IMPORTED_MODULE_0_babel_runtime_helpers_extends___default()({}, this.props, { ref: this.saveUploader }));
    }
  }]);

  return Upload;
}(__WEBPACK_IMPORTED_MODULE_5_react__["Component"]);

Upload.propTypes = {
  component: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.string,
  style: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.object,
  prefixCls: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.string,
  action: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.oneOfType([__WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.string, __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.func]),
  name: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.string,
  multipart: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.bool,
  directory: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.bool,
  onError: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.func,
  onSuccess: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.func,
  onProgress: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.func,
  onStart: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.func,
  data: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.oneOfType([__WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.object, __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.func]),
  headers: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.object,
  accept: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.string,
  multiple: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.bool,
  disabled: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.bool,
  beforeUpload: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.func,
  customRequest: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.func,
  onReady: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.func,
  withCredentials: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.bool,
  supportServerRender: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.bool,
  openFileDialogOnClick: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.bool
};
Upload.defaultProps = {
  component: 'span',
  prefixCls: 'rc-upload',
  data: {},
  headers: {},
  name: 'file',
  multipart: false,
  onReady: empty,
  onStart: empty,
  onError: empty,
  onSuccess: empty,
  supportServerRender: false,
  multiple: false,
  beforeUpload: null,
  customRequest: null,
  withCredentials: false,
  openFileDialogOnClick: true
};


/* harmony default export */ __webpack_exports__["a"] = (Upload);

/***/ }),

/***/ 1185:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_babel_runtime_helpers_extends__ = __webpack_require__(19);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_babel_runtime_helpers_extends___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_0_babel_runtime_helpers_extends__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_defineProperty__ = __webpack_require__(59);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_defineProperty___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_defineProperty__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2_babel_runtime_helpers_classCallCheck__ = __webpack_require__(11);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2_babel_runtime_helpers_classCallCheck___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_2_babel_runtime_helpers_classCallCheck__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3_babel_runtime_helpers_createClass__ = __webpack_require__(34);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3_babel_runtime_helpers_createClass___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_3_babel_runtime_helpers_createClass__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_4_babel_runtime_helpers_possibleConstructorReturn__ = __webpack_require__(12);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_4_babel_runtime_helpers_possibleConstructorReturn___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_4_babel_runtime_helpers_possibleConstructorReturn__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_5_babel_runtime_helpers_inherits__ = __webpack_require__(13);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_5_babel_runtime_helpers_inherits___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_5_babel_runtime_helpers_inherits__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_6_react__ = __webpack_require__(0);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_6_react___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_6_react__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_7_prop_types__ = __webpack_require__(1);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_7_prop_types___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_7_prop_types__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_8_classnames__ = __webpack_require__(3);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_8_classnames___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_8_classnames__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_9__request__ = __webpack_require__(1186);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_10__uid__ = __webpack_require__(1091);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_11__attr_accept__ = __webpack_require__(1187);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_12__traverseFileTree__ = __webpack_require__(1188);






/* eslint react/no-is-mounted:0 react/sort-comp:0 */









var AjaxUploader = function (_Component) {
  __WEBPACK_IMPORTED_MODULE_5_babel_runtime_helpers_inherits___default()(AjaxUploader, _Component);

  function AjaxUploader() {
    var _ref;

    var _temp, _this, _ret;

    __WEBPACK_IMPORTED_MODULE_2_babel_runtime_helpers_classCallCheck___default()(this, AjaxUploader);

    for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    return _ret = (_temp = (_this = __WEBPACK_IMPORTED_MODULE_4_babel_runtime_helpers_possibleConstructorReturn___default()(this, (_ref = AjaxUploader.__proto__ || Object.getPrototypeOf(AjaxUploader)).call.apply(_ref, [this].concat(args))), _this), _this.state = { uid: Object(__WEBPACK_IMPORTED_MODULE_10__uid__["a" /* default */])() }, _this.reqs = {}, _this.onChange = function (e) {
      var files = e.target.files;
      _this.uploadFiles(files);
      _this.reset();
    }, _this.onClick = function () {
      var el = _this.fileInput;
      if (!el) {
        return;
      }
      el.click();
    }, _this.onKeyDown = function (e) {
      if (e.key === 'Enter') {
        _this.onClick();
      }
    }, _this.onFileDrop = function (e) {
      var multiple = _this.props.multiple;


      e.preventDefault();

      if (e.type === 'dragover') {
        return;
      }

      if (_this.props.directory) {
        Object(__WEBPACK_IMPORTED_MODULE_12__traverseFileTree__["a" /* default */])(e.dataTransfer.items, _this.uploadFiles, function (_file) {
          return Object(__WEBPACK_IMPORTED_MODULE_11__attr_accept__["a" /* default */])(_file, _this.props.accept);
        });
      } else {
        var files = Array.prototype.slice.call(e.dataTransfer.files).filter(function (file) {
          return Object(__WEBPACK_IMPORTED_MODULE_11__attr_accept__["a" /* default */])(file, _this.props.accept);
        });

        if (multiple === false) {
          files = files.slice(0, 1);
        }

        _this.uploadFiles(files);
      }
    }, _this.uploadFiles = function (files) {
      var postFiles = Array.prototype.slice.call(files);
      postFiles.map(function (file) {
        file.uid = Object(__WEBPACK_IMPORTED_MODULE_10__uid__["a" /* default */])();
        return file;
      }).forEach(function (file) {
        _this.upload(file, postFiles);
      });
    }, _this.saveFileInput = function (node) {
      _this.fileInput = node;
    }, _temp), __WEBPACK_IMPORTED_MODULE_4_babel_runtime_helpers_possibleConstructorReturn___default()(_this, _ret);
  }

  __WEBPACK_IMPORTED_MODULE_3_babel_runtime_helpers_createClass___default()(AjaxUploader, [{
    key: 'componentDidMount',
    value: function componentDidMount() {
      this._isMounted = true;
    }
  }, {
    key: 'componentWillUnmount',
    value: function componentWillUnmount() {
      this._isMounted = false;
      this.abort();
    }
  }, {
    key: 'upload',
    value: function upload(file, fileList) {
      var _this2 = this;

      var props = this.props;

      if (!props.beforeUpload) {
        // always async in case use react state to keep fileList
        return setTimeout(function () {
          return _this2.post(file);
        }, 0);
      }

      var before = props.beforeUpload(file, fileList);
      if (before && before.then) {
        before.then(function (processedFile) {
          var processedFileType = Object.prototype.toString.call(processedFile);
          if (processedFileType === '[object File]' || processedFileType === '[object Blob]') {
            return _this2.post(processedFile);
          }
          return _this2.post(file);
        })['catch'](function (e) {
          console && console.log(e); // eslint-disable-line
        });
      } else if (before !== false) {
        setTimeout(function () {
          return _this2.post(file);
        }, 0);
      }
    }
  }, {
    key: 'post',
    value: function post(file) {
      var _this3 = this;

      if (!this._isMounted) {
        return;
      }
      var props = this.props;
      var data = props.data;
      var onStart = props.onStart,
          onProgress = props.onProgress,
          _props$transformFile = props.transformFile,
          transformFile = _props$transformFile === undefined ? function (originFile) {
        return originFile;
      } : _props$transformFile;


      new Promise(function (resolve) {
        var action = props.action;

        if (typeof action === 'function') {
          return resolve(action(file));
        }
        resolve(action);
      }).then(function (action) {
        var uid = file.uid;

        var request = props.customRequest || __WEBPACK_IMPORTED_MODULE_9__request__["a" /* default */];
        var transform = Promise.resolve(transformFile(file))['catch'](function (e) {
          console.error(e); // eslint-disable-line no-console
        });

        transform.then(function (transformedFile) {
          if (typeof data === 'function') {
            data = data(file);
          }

          var requestOption = {
            action: action,
            filename: props.name,
            data: data,
            file: transformedFile,
            headers: props.headers,
            withCredentials: props.withCredentials,
            method: props.method || 'post',
            onProgress: onProgress ? function (e) {
              onProgress(e, file);
            } : null,
            onSuccess: function onSuccess(ret, xhr) {
              delete _this3.reqs[uid];
              props.onSuccess(ret, file, xhr);
            },
            onError: function onError(err, ret) {
              delete _this3.reqs[uid];
              props.onError(err, ret, file);
            }
          };
          _this3.reqs[uid] = request(requestOption);
          onStart(file);
        });
      });
    }
  }, {
    key: 'reset',
    value: function reset() {
      this.setState({
        uid: Object(__WEBPACK_IMPORTED_MODULE_10__uid__["a" /* default */])()
      });
    }
  }, {
    key: 'abort',
    value: function abort(file) {
      var reqs = this.reqs;

      if (file) {
        var uid = file;
        if (file && file.uid) {
          uid = file.uid;
        }
        if (reqs[uid] && reqs[uid].abort) {
          reqs[uid].abort();
        }
        delete reqs[uid];
      } else {
        Object.keys(reqs).forEach(function (uid) {
          if (reqs[uid] && reqs[uid].abort) {
            reqs[uid].abort();
          }
          delete reqs[uid];
        });
      }
    }
  }, {
    key: 'render',
    value: function render() {
      var _classNames;

      var _props = this.props,
          Tag = _props.component,
          prefixCls = _props.prefixCls,
          className = _props.className,
          disabled = _props.disabled,
          id = _props.id,
          style = _props.style,
          multiple = _props.multiple,
          accept = _props.accept,
          children = _props.children,
          directory = _props.directory,
          openFileDialogOnClick = _props.openFileDialogOnClick;

      var cls = __WEBPACK_IMPORTED_MODULE_8_classnames___default()((_classNames = {}, __WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_defineProperty___default()(_classNames, prefixCls, true), __WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_defineProperty___default()(_classNames, prefixCls + '-disabled', disabled), __WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_defineProperty___default()(_classNames, className, className), _classNames));
      var events = disabled ? {} : {
        onClick: openFileDialogOnClick ? this.onClick : function () {},
        onKeyDown: openFileDialogOnClick ? this.onKeyDown : function () {},
        onDrop: this.onFileDrop,
        onDragOver: this.onFileDrop,
        tabIndex: '0'
      };
      return __WEBPACK_IMPORTED_MODULE_6_react___default.a.createElement(
        Tag,
        __WEBPACK_IMPORTED_MODULE_0_babel_runtime_helpers_extends___default()({}, events, {
          className: cls,
          role: 'button',
          style: style
        }),
        __WEBPACK_IMPORTED_MODULE_6_react___default.a.createElement('input', {
          id: id,
          type: 'file',
          ref: this.saveFileInput,
          onClick: function onClick(e) {
            return e.stopPropagation();
          } // https://github.com/ant-design/ant-design/issues/19948
          , key: this.state.uid,
          style: { display: 'none' },
          accept: accept,
          directory: directory ? 'directory' : null,
          webkitdirectory: directory ? 'webkitdirectory' : null,
          multiple: multiple,
          onChange: this.onChange
        }),
        children
      );
    }
  }]);

  return AjaxUploader;
}(__WEBPACK_IMPORTED_MODULE_6_react__["Component"]);

AjaxUploader.propTypes = {
  id: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.string,
  component: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.string,
  style: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.object,
  prefixCls: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.string,
  className: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.string,
  multiple: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.bool,
  directory: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.bool,
  disabled: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.bool,
  accept: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.string,
  children: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.any,
  onStart: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.func,
  data: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.oneOfType([__WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.object, __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.func]),
  action: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.oneOfType([__WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.string, __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.func]),
  headers: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.object,
  beforeUpload: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.func,
  customRequest: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.func,
  onProgress: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.func,
  withCredentials: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.bool,
  openFileDialogOnClick: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.bool,
  transformFile: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.func
};


/* harmony default export */ __webpack_exports__["a"] = (AjaxUploader);

/***/ }),

/***/ 1186:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony export (immutable) */ __webpack_exports__["a"] = upload;
function getError(option, xhr) {
  var msg = 'cannot ' + option.method + ' ' + option.action + ' ' + xhr.status + '\'';
  var err = new Error(msg);
  err.status = xhr.status;
  err.method = option.method;
  err.url = option.action;
  return err;
}

function getBody(xhr) {
  var text = xhr.responseText || xhr.response;
  if (!text) {
    return text;
  }

  try {
    return JSON.parse(text);
  } catch (e) {
    return text;
  }
}

// option {
//  onProgress: (event: { percent: number }): void,
//  onError: (event: Error, body?: Object): void,
//  onSuccess: (body: Object): void,
//  data: Object,
//  filename: String,
//  file: File,
//  withCredentials: Boolean,
//  action: String,
//  headers: Object,
// }
function upload(option) {
  var xhr = new XMLHttpRequest();

  if (option.onProgress && xhr.upload) {
    xhr.upload.onprogress = function progress(e) {
      if (e.total > 0) {
        e.percent = e.loaded / e.total * 100;
      }
      option.onProgress(e);
    };
  }

  var formData = new FormData();

  if (option.data) {
    Object.keys(option.data).forEach(function (key) {
      var value = option.data[key];
      // support key-value array data
      if (Array.isArray(value)) {
        value.forEach(function (item) {
          // { list: [ 11, 22 ] }
          // formData.append('list[]', 11);
          formData.append(key + '[]', item);
        });
        return;
      }

      formData.append(key, option.data[key]);
    });
  }

  formData.append(option.filename, option.file);

  xhr.onerror = function error(e) {
    option.onError(e);
  };

  xhr.onload = function onload() {
    // allow success when 2xx status
    // see https://github.com/react-component/upload/issues/34
    if (xhr.status < 200 || xhr.status >= 300) {
      return option.onError(getError(option, xhr), getBody(xhr));
    }

    option.onSuccess(getBody(xhr), xhr);
  };

  xhr.open(option.method, option.action, true);

  // Has to be after `.open()`. See https://github.com/enyo/dropzone/issues/179
  if (option.withCredentials && 'withCredentials' in xhr) {
    xhr.withCredentials = true;
  }

  var headers = option.headers || {};

  // when set headers['X-Requested-With'] = null , can close default XHR header
  // see https://github.com/react-component/upload/issues/33
  if (headers['X-Requested-With'] !== null) {
    xhr.setRequestHeader('X-Requested-With', 'XMLHttpRequest');
  }

  for (var h in headers) {
    if (headers.hasOwnProperty(h) && headers[h] !== null) {
      xhr.setRequestHeader(h, headers[h]);
    }
  }
  xhr.send(formData);

  return {
    abort: function abort() {
      xhr.abort();
    }
  };
}

/***/ }),

/***/ 1187:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
function endsWith(str, suffix) {
  return str.indexOf(suffix, str.length - suffix.length) !== -1;
}

/* harmony default export */ __webpack_exports__["a"] = (function (file, acceptedFiles) {
  if (file && acceptedFiles) {
    var acceptedFilesArray = Array.isArray(acceptedFiles) ? acceptedFiles : acceptedFiles.split(',');
    var fileName = file.name || '';
    var mimeType = file.type || '';
    var baseMimeType = mimeType.replace(/\/.*$/, '');

    return acceptedFilesArray.some(function (type) {
      var validType = type.trim();
      if (validType.charAt(0) === '.') {
        return endsWith(fileName.toLowerCase(), validType.toLowerCase());
      } else if (/\/\*$/.test(validType)) {
        // This is something like a image/* mime type
        return baseMimeType === validType.replace(/\/.*$/, '');
      }
      return mimeType === validType;
    });
  }
  return true;
});

/***/ }),

/***/ 1188:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
function loopFiles(item, callback) {
  var dirReader = item.createReader();
  var fileList = [];

  function sequence() {
    dirReader.readEntries(function (entries) {
      var entryList = Array.prototype.slice.apply(entries);
      fileList = fileList.concat(entryList);

      // Check if all the file has been viewed
      var isFinished = !entryList.length;

      if (isFinished) {
        callback(fileList);
      } else {
        sequence();
      }
    });
  }

  sequence();
}

var traverseFileTree = function traverseFileTree(files, callback, isAccepted) {
  var _traverseFileTree = function _traverseFileTree(item, path) {
    path = path || '';
    if (item.isFile) {
      item.file(function (file) {
        if (isAccepted(file)) {
          // https://github.com/ant-design/ant-design/issues/16426
          if (item.fullPath && !file.webkitRelativePath) {
            Object.defineProperties(file, {
              webkitRelativePath: {
                writable: true
              }
            });
            file.webkitRelativePath = item.fullPath.replace(/^\//, '');
            Object.defineProperties(file, {
              webkitRelativePath: {
                writable: false
              }
            });
          }
          callback([file]);
        }
      });
    } else if (item.isDirectory) {
      loopFiles(item, function (entries) {
        entries.forEach(function (entryItem) {
          _traverseFileTree(entryItem, '' + path + item.name + '/');
        });
      });
    }
  };
  var _iteratorNormalCompletion = true;
  var _didIteratorError = false;
  var _iteratorError = undefined;

  try {
    for (var _iterator = files[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
      var file = _step.value;

      _traverseFileTree(file.webkitGetAsEntry());
    }
  } catch (err) {
    _didIteratorError = true;
    _iteratorError = err;
  } finally {
    try {
      if (!_iteratorNormalCompletion && _iterator['return']) {
        _iterator['return']();
      }
    } finally {
      if (_didIteratorError) {
        throw _iteratorError;
      }
    }
  }
};

/* harmony default export */ __webpack_exports__["a"] = (traverseFileTree);

/***/ }),

/***/ 1189:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_babel_runtime_helpers_defineProperty__ = __webpack_require__(59);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_babel_runtime_helpers_defineProperty___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_0_babel_runtime_helpers_defineProperty__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_extends__ = __webpack_require__(19);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_extends___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_extends__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2_babel_runtime_helpers_classCallCheck__ = __webpack_require__(11);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2_babel_runtime_helpers_classCallCheck___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_2_babel_runtime_helpers_classCallCheck__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3_babel_runtime_helpers_createClass__ = __webpack_require__(34);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3_babel_runtime_helpers_createClass___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_3_babel_runtime_helpers_createClass__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_4_babel_runtime_helpers_possibleConstructorReturn__ = __webpack_require__(12);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_4_babel_runtime_helpers_possibleConstructorReturn___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_4_babel_runtime_helpers_possibleConstructorReturn__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_5_babel_runtime_helpers_inherits__ = __webpack_require__(13);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_5_babel_runtime_helpers_inherits___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_5_babel_runtime_helpers_inherits__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_6_react__ = __webpack_require__(0);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_6_react___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_6_react__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_7_prop_types__ = __webpack_require__(1);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_7_prop_types___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_7_prop_types__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_8_react_dom__ = __webpack_require__(4);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_8_react_dom___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_8_react_dom__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_9_classnames__ = __webpack_require__(3);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_9_classnames___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_9_classnames__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_10__uid__ = __webpack_require__(1091);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_11_warning__ = __webpack_require__(328);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_11_warning___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_11_warning__);






/* eslint react/sort-comp:0 */







var IFRAME_STYLE = {
  position: 'absolute',
  top: 0,
  opacity: 0,
  filter: 'alpha(opacity=0)',
  left: 0,
  zIndex: 9999
};

// diferent from AjaxUpload, can only upload on at one time, serial seriously

var IframeUploader = function (_Component) {
  __WEBPACK_IMPORTED_MODULE_5_babel_runtime_helpers_inherits___default()(IframeUploader, _Component);

  function IframeUploader() {
    var _ref;

    var _temp, _this, _ret;

    __WEBPACK_IMPORTED_MODULE_2_babel_runtime_helpers_classCallCheck___default()(this, IframeUploader);

    for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    return _ret = (_temp = (_this = __WEBPACK_IMPORTED_MODULE_4_babel_runtime_helpers_possibleConstructorReturn___default()(this, (_ref = IframeUploader.__proto__ || Object.getPrototypeOf(IframeUploader)).call.apply(_ref, [this].concat(args))), _this), _this.state = { uploading: false }, _this.file = {}, _this.onLoad = function () {
      if (!_this.state.uploading) {
        return;
      }
      var _this2 = _this,
          props = _this2.props,
          file = _this2.file;

      var response = void 0;
      try {
        var doc = _this.getIframeDocument();
        var script = doc.getElementsByTagName('script')[0];
        if (script && script.parentNode === doc.body) {
          doc.body.removeChild(script);
        }
        response = doc.body.innerHTML;
        props.onSuccess(response, file);
      } catch (err) {
        __WEBPACK_IMPORTED_MODULE_11_warning___default()(false, 'cross domain error for Upload. Maybe server should return document.domain script. see Note from https://github.com/react-component/upload');
        response = 'cross-domain';
        props.onError(err, null, file);
      }
      _this.endUpload();
    }, _this.onChange = function () {
      var target = _this.getFormInputNode();
      // ie8/9 don't support FileList Object
      // http://stackoverflow.com/questions/12830058/ie8-input-type-file-get-files
      var file = _this.file = {
        uid: Object(__WEBPACK_IMPORTED_MODULE_10__uid__["a" /* default */])(),
        name: target.value && target.value.substring(target.value.lastIndexOf('\\') + 1, target.value.length)
      };
      _this.startUpload();
      var _this3 = _this,
          props = _this3.props;

      if (!props.beforeUpload) {
        return _this.post(file);
      }
      var before = props.beforeUpload(file);
      if (before && before.then) {
        before.then(function () {
          _this.post(file);
        }, function () {
          _this.endUpload();
        });
      } else if (before !== false) {
        _this.post(file);
      } else {
        _this.endUpload();
      }
    }, _this.saveIframe = function (node) {
      _this.iframe = node;
    }, _temp), __WEBPACK_IMPORTED_MODULE_4_babel_runtime_helpers_possibleConstructorReturn___default()(_this, _ret);
  }

  __WEBPACK_IMPORTED_MODULE_3_babel_runtime_helpers_createClass___default()(IframeUploader, [{
    key: 'componentDidMount',
    value: function componentDidMount() {
      this.updateIframeWH();
      this.initIframe();
    }
  }, {
    key: 'componentDidUpdate',
    value: function componentDidUpdate() {
      this.updateIframeWH();
    }
  }, {
    key: 'getIframeNode',
    value: function getIframeNode() {
      return this.iframe;
    }
  }, {
    key: 'getIframeDocument',
    value: function getIframeDocument() {
      return this.getIframeNode().contentDocument;
    }
  }, {
    key: 'getFormNode',
    value: function getFormNode() {
      return this.getIframeDocument().getElementById('form');
    }
  }, {
    key: 'getFormInputNode',
    value: function getFormInputNode() {
      return this.getIframeDocument().getElementById('input');
    }
  }, {
    key: 'getFormDataNode',
    value: function getFormDataNode() {
      return this.getIframeDocument().getElementById('data');
    }
  }, {
    key: 'getFileForMultiple',
    value: function getFileForMultiple(file) {
      return this.props.multiple ? [file] : file;
    }
  }, {
    key: 'getIframeHTML',
    value: function getIframeHTML(domain) {
      var domainScript = '';
      var domainInput = '';
      if (domain) {
        var script = 'script';
        domainScript = '<' + script + '>document.domain="' + domain + '";</' + script + '>';
        domainInput = '<input name="_documentDomain" value="' + domain + '" />';
      }
      return '\n    <!DOCTYPE html>\n    <html>\n    <head>\n    <meta http-equiv="X-UA-Compatible" content="IE=edge" />\n    <style>\n    body,html {padding:0;margin:0;border:0;overflow:hidden;}\n    </style>\n    ' + domainScript + '\n    </head>\n    <body>\n    <form method="post"\n    encType="multipart/form-data"\n    action="" id="form"\n    style="display:block;height:9999px;position:relative;overflow:hidden;">\n    <input id="input" type="file"\n     name="' + this.props.name + '"\n     style="position:absolute;top:0;right:0;height:9999px;font-size:9999px;cursor:pointer;"/>\n    ' + domainInput + '\n    <span id="data"></span>\n    </form>\n    </body>\n    </html>\n    ';
    }
  }, {
    key: 'initIframeSrc',
    value: function initIframeSrc() {
      if (this.domain) {
        this.getIframeNode().src = 'javascript:void((function(){\n        var d = document;\n        d.open();\n        d.domain=\'' + this.domain + '\';\n        d.write(\'\');\n        d.close();\n      })())';
      }
    }
  }, {
    key: 'initIframe',
    value: function initIframe() {
      var iframeNode = this.getIframeNode();
      var win = iframeNode.contentWindow;
      var doc = void 0;
      this.domain = this.domain || '';
      this.initIframeSrc();
      try {
        doc = win.document;
      } catch (e) {
        this.domain = document.domain;
        this.initIframeSrc();
        win = iframeNode.contentWindow;
        doc = win.document;
      }
      doc.open('text/html', 'replace');
      doc.write(this.getIframeHTML(this.domain));
      doc.close();
      this.getFormInputNode().onchange = this.onChange;
    }
  }, {
    key: 'endUpload',
    value: function endUpload() {
      if (this.state.uploading) {
        this.file = {};
        // hack avoid batch
        this.state.uploading = false;
        this.setState({
          uploading: false
        });
        this.initIframe();
      }
    }
  }, {
    key: 'startUpload',
    value: function startUpload() {
      if (!this.state.uploading) {
        this.state.uploading = true;
        this.setState({
          uploading: true
        });
      }
    }
  }, {
    key: 'updateIframeWH',
    value: function updateIframeWH() {
      var rootNode = __WEBPACK_IMPORTED_MODULE_8_react_dom___default.a.findDOMNode(this);
      var iframeNode = this.getIframeNode();
      iframeNode.style.height = rootNode.offsetHeight + 'px';
      iframeNode.style.width = rootNode.offsetWidth + 'px';
    }
  }, {
    key: 'abort',
    value: function abort(file) {
      if (file) {
        var uid = file;
        if (file && file.uid) {
          uid = file.uid;
        }
        if (uid === this.file.uid) {
          this.endUpload();
        }
      } else {
        this.endUpload();
      }
    }
  }, {
    key: 'post',
    value: function post(file) {
      var _this4 = this;

      var formNode = this.getFormNode();
      var dataSpan = this.getFormDataNode();
      var data = this.props.data;
      var onStart = this.props.onStart;

      if (typeof data === 'function') {
        data = data(file);
      }
      var inputs = document.createDocumentFragment();
      for (var key in data) {
        if (data.hasOwnProperty(key)) {
          var input = document.createElement('input');
          input.setAttribute('name', key);
          input.value = data[key];
          inputs.appendChild(input);
        }
      }
      dataSpan.appendChild(inputs);
      new Promise(function (resolve) {
        var action = _this4.props.action;

        if (typeof action === 'function') {
          return resolve(action(file));
        }
        resolve(action);
      }).then(function (action) {
        formNode.setAttribute('action', action);
        formNode.submit();
        dataSpan.innerHTML = '';
        onStart(file);
      });
    }
  }, {
    key: 'render',
    value: function render() {
      var _classNames;

      var _props = this.props,
          Tag = _props.component,
          disabled = _props.disabled,
          className = _props.className,
          prefixCls = _props.prefixCls,
          children = _props.children,
          style = _props.style;

      var iframeStyle = __WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_extends___default()({}, IFRAME_STYLE, {
        display: this.state.uploading || disabled ? 'none' : ''
      });
      var cls = __WEBPACK_IMPORTED_MODULE_9_classnames___default()((_classNames = {}, __WEBPACK_IMPORTED_MODULE_0_babel_runtime_helpers_defineProperty___default()(_classNames, prefixCls, true), __WEBPACK_IMPORTED_MODULE_0_babel_runtime_helpers_defineProperty___default()(_classNames, prefixCls + '-disabled', disabled), __WEBPACK_IMPORTED_MODULE_0_babel_runtime_helpers_defineProperty___default()(_classNames, className, className), _classNames));
      return __WEBPACK_IMPORTED_MODULE_6_react___default.a.createElement(
        Tag,
        {
          className: cls,
          style: __WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_extends___default()({ position: 'relative', zIndex: 0 }, style)
        },
        __WEBPACK_IMPORTED_MODULE_6_react___default.a.createElement('iframe', {
          ref: this.saveIframe,
          onLoad: this.onLoad,
          style: iframeStyle
        }),
        children
      );
    }
  }]);

  return IframeUploader;
}(__WEBPACK_IMPORTED_MODULE_6_react__["Component"]);

IframeUploader.propTypes = {
  component: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.string,
  style: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.object,
  disabled: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.bool,
  prefixCls: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.string,
  className: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.string,
  accept: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.string,
  onStart: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.func,
  multiple: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.bool,
  children: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.any,
  data: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.oneOfType([__WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.object, __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.func]),
  action: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.oneOfType([__WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.string, __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.func]),
  name: __WEBPACK_IMPORTED_MODULE_7_prop_types___default.a.string
};


/* harmony default export */ __webpack_exports__["a"] = (IframeUploader);

/***/ }),

/***/ 1190:
/***/ (function(module, exports, __webpack_require__) {

var baseIteratee = __webpack_require__(1092),
    baseUniq = __webpack_require__(1234);

/**
 * This method is like `_.uniq` except that it accepts `iteratee` which is
 * invoked for each element in `array` to generate the criterion by which
 * uniqueness is computed. The order of result values is determined by the
 * order they occur in the array. The iteratee is invoked with one argument:
 * (value).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Array
 * @param {Array} array The array to inspect.
 * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
 * @returns {Array} Returns the new duplicate free array.
 * @example
 *
 * _.uniqBy([2.1, 1.2, 2.3], Math.floor);
 * // => [2.1, 1.2]
 *
 * // The `_.property` iteratee shorthand.
 * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');
 * // => [{ 'x': 1 }, { 'x': 2 }]
 */
function uniqBy(array, iteratee) {
  return (array && array.length) ? baseUniq(array, baseIteratee(iteratee, 2)) : [];
}

module.exports = uniqBy;


/***/ }),

/***/ 1191:
/***/ (function(module, exports, __webpack_require__) {

var baseIsMatch = __webpack_require__(1192),
    getMatchData = __webpack_require__(1227),
    matchesStrictComparable = __webpack_require__(1103);

/**
 * The base implementation of `_.matches` which doesn't clone `source`.
 *
 * @private
 * @param {Object} source The object of property values to match.
 * @returns {Function} Returns the new spec function.
 */
function baseMatches(source) {
  var matchData = getMatchData(source);
  if (matchData.length == 1 && matchData[0][2]) {
    return matchesStrictComparable(matchData[0][0], matchData[0][1]);
  }
  return function(object) {
    return object === source || baseIsMatch(object, source, matchData);
  };
}

module.exports = baseMatches;


/***/ }),

/***/ 1192:
/***/ (function(module, exports, __webpack_require__) {

var Stack = __webpack_require__(1093),
    baseIsEqual = __webpack_require__(1094);

/** Used to compose bitmasks for value comparisons. */
var COMPARE_PARTIAL_FLAG = 1,
    COMPARE_UNORDERED_FLAG = 2;

/**
 * The base implementation of `_.isMatch` without support for iteratee shorthands.
 *
 * @private
 * @param {Object} object The object to inspect.
 * @param {Object} source The object of property values to match.
 * @param {Array} matchData The property names, values, and compare flags to match.
 * @param {Function} [customizer] The function to customize comparisons.
 * @returns {boolean} Returns `true` if `object` is a match, else `false`.
 */
function baseIsMatch(object, source, matchData, customizer) {
  var index = matchData.length,
      length = index,
      noCustomizer = !customizer;

  if (object == null) {
    return !length;
  }
  object = Object(object);
  while (index--) {
    var data = matchData[index];
    if ((noCustomizer && data[2])
          ? data[1] !== object[data[0]]
          : !(data[0] in object)
        ) {
      return false;
    }
  }
  while (++index < length) {
    data = matchData[index];
    var key = data[0],
        objValue = object[key],
        srcValue = data[1];

    if (noCustomizer && data[2]) {
      if (objValue === undefined && !(key in object)) {
        return false;
      }
    } else {
      var stack = new Stack;
      if (customizer) {
        var result = customizer(objValue, srcValue, key, object, source, stack);
      }
      if (!(result === undefined
            ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack)
            : result
          )) {
        return false;
      }
    }
  }
  return true;
}

module.exports = baseIsMatch;


/***/ }),

/***/ 1193:
/***/ (function(module, exports, __webpack_require__) {

var ListCache = __webpack_require__(928);

/**
 * Removes all key-value entries from the stack.
 *
 * @private
 * @name clear
 * @memberOf Stack
 */
function stackClear() {
  this.__data__ = new ListCache;
  this.size = 0;
}

module.exports = stackClear;


/***/ }),

/***/ 1194:
/***/ (function(module, exports) {

/**
 * Removes `key` and its value from the stack.
 *
 * @private
 * @name delete
 * @memberOf Stack
 * @param {string} key The key of the value to remove.
 * @returns {boolean} Returns `true` if the entry was removed, else `false`.
 */
function stackDelete(key) {
  var data = this.__data__,
      result = data['delete'](key);

  this.size = data.size;
  return result;
}

module.exports = stackDelete;


/***/ }),

/***/ 1195:
/***/ (function(module, exports) {

/**
 * Gets the stack value for `key`.
 *
 * @private
 * @name get
 * @memberOf Stack
 * @param {string} key The key of the value to get.
 * @returns {*} Returns the entry value.
 */
function stackGet(key) {
  return this.__data__.get(key);
}

module.exports = stackGet;


/***/ }),

/***/ 1196:
/***/ (function(module, exports) {

/**
 * Checks if a stack value for `key` exists.
 *
 * @private
 * @name has
 * @memberOf Stack
 * @param {string} key The key of the entry to check.
 * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
 */
function stackHas(key) {
  return this.__data__.has(key);
}

module.exports = stackHas;


/***/ }),

/***/ 1197:
/***/ (function(module, exports, __webpack_require__) {

var ListCache = __webpack_require__(928),
    Map = __webpack_require__(935),
    MapCache = __webpack_require__(936);

/** Used as the size to enable large array optimizations. */
var LARGE_ARRAY_SIZE = 200;

/**
 * Sets the stack `key` to `value`.
 *
 * @private
 * @name set
 * @memberOf Stack
 * @param {string} key The key of the value to set.
 * @param {*} value The value to set.
 * @returns {Object} Returns the stack cache instance.
 */
function stackSet(key, value) {
  var data = this.__data__;
  if (data instanceof ListCache) {
    var pairs = data.__data__;
    if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {
      pairs.push([key, value]);
      this.size = ++data.size;
      return this;
    }
    data = this.__data__ = new MapCache(pairs);
  }
  data.set(key, value);
  this.size = data.size;
  return this;
}

module.exports = stackSet;


/***/ }),

/***/ 1198:
/***/ (function(module, exports, __webpack_require__) {

var Stack = __webpack_require__(1093),
    equalArrays = __webpack_require__(1095),
    equalByTag = __webpack_require__(1202),
    equalObjects = __webpack_require__(1205),
    getTag = __webpack_require__(1223),
    isArray = __webpack_require__(919),
    isBuffer = __webpack_require__(1099),
    isTypedArray = __webpack_require__(1100);

/** Used to compose bitmasks for value comparisons. */
var COMPARE_PARTIAL_FLAG = 1;

/** `Object#toString` result references. */
var argsTag = '[object Arguments]',
    arrayTag = '[object Array]',
    objectTag = '[object Object]';

/** Used for built-in method references. */
var objectProto = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty = objectProto.hasOwnProperty;

/**
 * A specialized version of `baseIsEqual` for arrays and objects which performs
 * deep comparisons and tracks traversed objects enabling objects with circular
 * references to be compared.
 *
 * @private
 * @param {Object} object The object to compare.
 * @param {Object} other The other object to compare.
 * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
 * @param {Function} customizer The function to customize comparisons.
 * @param {Function} equalFunc The function to determine equivalents of values.
 * @param {Object} [stack] Tracks traversed `object` and `other` objects.
 * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
 */
function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {
  var objIsArr = isArray(object),
      othIsArr = isArray(other),
      objTag = objIsArr ? arrayTag : getTag(object),
      othTag = othIsArr ? arrayTag : getTag(other);

  objTag = objTag == argsTag ? objectTag : objTag;
  othTag = othTag == argsTag ? objectTag : othTag;

  var objIsObj = objTag == objectTag,
      othIsObj = othTag == objectTag,
      isSameTag = objTag == othTag;

  if (isSameTag && isBuffer(object)) {
    if (!isBuffer(other)) {
      return false;
    }
    objIsArr = true;
    objIsObj = false;
  }
  if (isSameTag && !objIsObj) {
    stack || (stack = new Stack);
    return (objIsArr || isTypedArray(object))
      ? equalArrays(object, other, bitmask, customizer, equalFunc, stack)
      : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);
  }
  if (!(bitmask & COMPARE_PARTIAL_FLAG)) {
    var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),
        othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');

    if (objIsWrapped || othIsWrapped) {
      var objUnwrapped = objIsWrapped ? object.value() : object,
          othUnwrapped = othIsWrapped ? other.value() : other;

      stack || (stack = new Stack);
      return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);
    }
  }
  if (!isSameTag) {
    return false;
  }
  stack || (stack = new Stack);
  return equalObjects(object, other, bitmask, customizer, equalFunc, stack);
}

module.exports = baseIsEqualDeep;


/***/ }),

/***/ 1199:
/***/ (function(module, exports) {

/** Used to stand-in for `undefined` hash values. */
var HASH_UNDEFINED = '__lodash_hash_undefined__';

/**
 * Adds `value` to the array cache.
 *
 * @private
 * @name add
 * @memberOf SetCache
 * @alias push
 * @param {*} value The value to cache.
 * @returns {Object} Returns the cache instance.
 */
function setCacheAdd(value) {
  this.__data__.set(value, HASH_UNDEFINED);
  return this;
}

module.exports = setCacheAdd;


/***/ }),

/***/ 1200:
/***/ (function(module, exports) {

/**
 * Checks if `value` is in the array cache.
 *
 * @private
 * @name has
 * @memberOf SetCache
 * @param {*} value The value to search for.
 * @returns {number} Returns `true` if `value` is found, else `false`.
 */
function setCacheHas(value) {
  return this.__data__.has(value);
}

module.exports = setCacheHas;


/***/ }),

/***/ 1201:
/***/ (function(module, exports) {

/**
 * A specialized version of `_.some` for arrays without support for iteratee
 * shorthands.
 *
 * @private
 * @param {Array} [array] The array to iterate over.
 * @param {Function} predicate The function invoked per iteration.
 * @returns {boolean} Returns `true` if any element passes the predicate check,
 *  else `false`.
 */
function arraySome(array, predicate) {
  var index = -1,
      length = array == null ? 0 : array.length;

  while (++index < length) {
    if (predicate(array[index], index, array)) {
      return true;
    }
  }
  return false;
}

module.exports = arraySome;


/***/ }),

/***/ 1202:
/***/ (function(module, exports, __webpack_require__) {

var Symbol = __webpack_require__(184),
    Uint8Array = __webpack_require__(1203),
    eq = __webpack_require__(925),
    equalArrays = __webpack_require__(1095),
    mapToArray = __webpack_require__(1204),
    setToArray = __webpack_require__(981);

/** Used to compose bitmasks for value comparisons. */
var COMPARE_PARTIAL_FLAG = 1,
    COMPARE_UNORDERED_FLAG = 2;

/** `Object#toString` result references. */
var boolTag = '[object Boolean]',
    dateTag = '[object Date]',
    errorTag = '[object Error]',
    mapTag = '[object Map]',
    numberTag = '[object Number]',
    regexpTag = '[object RegExp]',
    setTag = '[object Set]',
    stringTag = '[object String]',
    symbolTag = '[object Symbol]';

var arrayBufferTag = '[object ArrayBuffer]',
    dataViewTag = '[object DataView]';

/** Used to convert symbols to primitives and strings. */
var symbolProto = Symbol ? Symbol.prototype : undefined,
    symbolValueOf = symbolProto ? symbolProto.valueOf : undefined;

/**
 * A specialized version of `baseIsEqualDeep` for comparing objects of
 * the same `toStringTag`.
 *
 * **Note:** This function only supports comparing values with tags of
 * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.
 *
 * @private
 * @param {Object} object The object to compare.
 * @param {Object} other The other object to compare.
 * @param {string} tag The `toStringTag` of the objects to compare.
 * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
 * @param {Function} customizer The function to customize comparisons.
 * @param {Function} equalFunc The function to determine equivalents of values.
 * @param {Object} stack Tracks traversed `object` and `other` objects.
 * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
 */
function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {
  switch (tag) {
    case dataViewTag:
      if ((object.byteLength != other.byteLength) ||
          (object.byteOffset != other.byteOffset)) {
        return false;
      }
      object = object.buffer;
      other = other.buffer;

    case arrayBufferTag:
      if ((object.byteLength != other.byteLength) ||
          !equalFunc(new Uint8Array(object), new Uint8Array(other))) {
        return false;
      }
      return true;

    case boolTag:
    case dateTag:
    case numberTag:
      // Coerce booleans to `1` or `0` and dates to milliseconds.
      // Invalid dates are coerced to `NaN`.
      return eq(+object, +other);

    case errorTag:
      return object.name == other.name && object.message == other.message;

    case regexpTag:
    case stringTag:
      // Coerce regexes to strings and treat strings, primitives and objects,
      // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring
      // for more details.
      return object == (other + '');

    case mapTag:
      var convert = mapToArray;

    case setTag:
      var isPartial = bitmask & COMPARE_PARTIAL_FLAG;
      convert || (convert = setToArray);

      if (object.size != other.size && !isPartial) {
        return false;
      }
      // Assume cyclic values are equal.
      var stacked = stack.get(object);
      if (stacked) {
        return stacked == other;
      }
      bitmask |= COMPARE_UNORDERED_FLAG;

      // Recursively compare objects (susceptible to call stack limits).
      stack.set(object, other);
      var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack);
      stack['delete'](object);
      return result;

    case symbolTag:
      if (symbolValueOf) {
        return symbolValueOf.call(object) == symbolValueOf.call(other);
      }
  }
  return false;
}

module.exports = equalByTag;


/***/ }),

/***/ 1203:
/***/ (function(module, exports, __webpack_require__) {

var root = __webpack_require__(173);

/** Built-in value references. */
var Uint8Array = root.Uint8Array;

module.exports = Uint8Array;


/***/ }),

/***/ 1204:
/***/ (function(module, exports) {

/**
 * Converts `map` to its key-value pairs.
 *
 * @private
 * @param {Object} map The map to convert.
 * @returns {Array} Returns the key-value pairs.
 */
function mapToArray(map) {
  var index = -1,
      result = Array(map.size);

  map.forEach(function(value, key) {
    result[++index] = [key, value];
  });
  return result;
}

module.exports = mapToArray;


/***/ }),

/***/ 1205:
/***/ (function(module, exports, __webpack_require__) {

var getAllKeys = __webpack_require__(1206);

/** Used to compose bitmasks for value comparisons. */
var COMPARE_PARTIAL_FLAG = 1;

/** Used for built-in method references. */
var objectProto = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty = objectProto.hasOwnProperty;

/**
 * A specialized version of `baseIsEqualDeep` for objects with support for
 * partial deep comparisons.
 *
 * @private
 * @param {Object} object The object to compare.
 * @param {Object} other The other object to compare.
 * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
 * @param {Function} customizer The function to customize comparisons.
 * @param {Function} equalFunc The function to determine equivalents of values.
 * @param {Object} stack Tracks traversed `object` and `other` objects.
 * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
 */
function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {
  var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
      objProps = getAllKeys(object),
      objLength = objProps.length,
      othProps = getAllKeys(other),
      othLength = othProps.length;

  if (objLength != othLength && !isPartial) {
    return false;
  }
  var index = objLength;
  while (index--) {
    var key = objProps[index];
    if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) {
      return false;
    }
  }
  // Assume cyclic values are equal.
  var stacked = stack.get(object);
  if (stacked && stack.get(other)) {
    return stacked == other;
  }
  var result = true;
  stack.set(object, other);
  stack.set(other, object);

  var skipCtor = isPartial;
  while (++index < objLength) {
    key = objProps[index];
    var objValue = object[key],
        othValue = other[key];

    if (customizer) {
      var compared = isPartial
        ? customizer(othValue, objValue, key, other, object, stack)
        : customizer(objValue, othValue, key, object, other, stack);
    }
    // Recursively compare objects (susceptible to call stack limits).
    if (!(compared === undefined
          ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack))
          : compared
        )) {
      result = false;
      break;
    }
    skipCtor || (skipCtor = key == 'constructor');
  }
  if (result && !skipCtor) {
    var objCtor = object.constructor,
        othCtor = other.constructor;

    // Non `Object` object instances with different constructors are not equal.
    if (objCtor != othCtor &&
        ('constructor' in object && 'constructor' in other) &&
        !(typeof objCtor == 'function' && objCtor instanceof objCtor &&
          typeof othCtor == 'function' && othCtor instanceof othCtor)) {
      result = false;
    }
  }
  stack['delete'](object);
  stack['delete'](other);
  return result;
}

module.exports = equalObjects;


/***/ }),

/***/ 1206:
/***/ (function(module, exports, __webpack_require__) {

var baseGetAllKeys = __webpack_require__(1207),
    getSymbols = __webpack_require__(1209),
    keys = __webpack_require__(1098);

/**
 * Creates an array of own enumerable property names and symbols of `object`.
 *
 * @private
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of property names and symbols.
 */
function getAllKeys(object) {
  return baseGetAllKeys(object, keys, getSymbols);
}

module.exports = getAllKeys;


/***/ }),

/***/ 1207:
/***/ (function(module, exports, __webpack_require__) {

var arrayPush = __webpack_require__(1208),
    isArray = __webpack_require__(919);

/**
 * The base implementation of `getAllKeys` and `getAllKeysIn` which uses
 * `keysFunc` and `symbolsFunc` to get the enumerable property names and
 * symbols of `object`.
 *
 * @private
 * @param {Object} object The object to query.
 * @param {Function} keysFunc The function to get the keys of `object`.
 * @param {Function} symbolsFunc The function to get the symbols of `object`.
 * @returns {Array} Returns the array of property names and symbols.
 */
function baseGetAllKeys(object, keysFunc, symbolsFunc) {
  var result = keysFunc(object);
  return isArray(object) ? result : arrayPush(result, symbolsFunc(object));
}

module.exports = baseGetAllKeys;


/***/ }),

/***/ 1208:
/***/ (function(module, exports) {

/**
 * Appends the elements of `values` to `array`.
 *
 * @private
 * @param {Array} array The array to modify.
 * @param {Array} values The values to append.
 * @returns {Array} Returns `array`.
 */
function arrayPush(array, values) {
  var index = -1,
      length = values.length,
      offset = array.length;

  while (++index < length) {
    array[offset + index] = values[index];
  }
  return array;
}

module.exports = arrayPush;


/***/ }),

/***/ 1209:
/***/ (function(module, exports, __webpack_require__) {

var arrayFilter = __webpack_require__(1210),
    stubArray = __webpack_require__(1211);

/** Used for built-in method references. */
var objectProto = Object.prototype;

/** Built-in value references. */
var propertyIsEnumerable = objectProto.propertyIsEnumerable;

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeGetSymbols = Object.getOwnPropertySymbols;

/**
 * Creates an array of the own enumerable symbols of `object`.
 *
 * @private
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of symbols.
 */
var getSymbols = !nativeGetSymbols ? stubArray : function(object) {
  if (object == null) {
    return [];
  }
  object = Object(object);
  return arrayFilter(nativeGetSymbols(object), function(symbol) {
    return propertyIsEnumerable.call(object, symbol);
  });
};

module.exports = getSymbols;


/***/ }),

/***/ 1210:
/***/ (function(module, exports) {

/**
 * A specialized version of `_.filter` for arrays without support for
 * iteratee shorthands.
 *
 * @private
 * @param {Array} [array] The array to iterate over.
 * @param {Function} predicate The function invoked per iteration.
 * @returns {Array} Returns the new filtered array.
 */
function arrayFilter(array, predicate) {
  var index = -1,
      length = array == null ? 0 : array.length,
      resIndex = 0,
      result = [];

  while (++index < length) {
    var value = array[index];
    if (predicate(value, index, array)) {
      result[resIndex++] = value;
    }
  }
  return result;
}

module.exports = arrayFilter;


/***/ }),

/***/ 1211:
/***/ (function(module, exports) {

/**
 * This method returns a new empty array.
 *
 * @static
 * @memberOf _
 * @since 4.13.0
 * @category Util
 * @returns {Array} Returns the new empty array.
 * @example
 *
 * var arrays = _.times(2, _.stubArray);
 *
 * console.log(arrays);
 * // => [[], []]
 *
 * console.log(arrays[0] === arrays[1]);
 * // => false
 */
function stubArray() {
  return [];
}

module.exports = stubArray;


/***/ }),

/***/ 1212:
/***/ (function(module, exports, __webpack_require__) {

var baseTimes = __webpack_require__(1213),
    isArguments = __webpack_require__(951),
    isArray = __webpack_require__(919),
    isBuffer = __webpack_require__(1099),
    isIndex = __webpack_require__(932),
    isTypedArray = __webpack_require__(1100);

/** Used for built-in method references. */
var objectProto = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty = objectProto.hasOwnProperty;

/**
 * Creates an array of the enumerable property names of the array-like `value`.
 *
 * @private
 * @param {*} value The value to query.
 * @param {boolean} inherited Specify returning inherited property names.
 * @returns {Array} Returns the array of property names.
 */
function arrayLikeKeys(value, inherited) {
  var isArr = isArray(value),
      isArg = !isArr && isArguments(value),
      isBuff = !isArr && !isArg && isBuffer(value),
      isType = !isArr && !isArg && !isBuff && isTypedArray(value),
      skipIndexes = isArr || isArg || isBuff || isType,
      result = skipIndexes ? baseTimes(value.length, String) : [],
      length = result.length;

  for (var key in value) {
    if ((inherited || hasOwnProperty.call(value, key)) &&
        !(skipIndexes && (
           // Safari 9 has enumerable `arguments.length` in strict mode.
           key == 'length' ||
           // Node.js 0.10 has enumerable non-index properties on buffers.
           (isBuff && (key == 'offset' || key == 'parent')) ||
           // PhantomJS 2 has enumerable non-index properties on typed arrays.
           (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) ||
           // Skip index properties.
           isIndex(key, length)
        ))) {
      result.push(key);
    }
  }
  return result;
}

module.exports = arrayLikeKeys;


/***/ }),

/***/ 1213:
/***/ (function(module, exports) {

/**
 * The base implementation of `_.times` without support for iteratee shorthands
 * or max array length checks.
 *
 * @private
 * @param {number} n The number of times to invoke `iteratee`.
 * @param {Function} iteratee The function invoked per iteration.
 * @returns {Array} Returns the array of results.
 */
function baseTimes(n, iteratee) {
  var index = -1,
      result = Array(n);

  while (++index < n) {
    result[index] = iteratee(index);
  }
  return result;
}

module.exports = baseTimes;


/***/ }),

/***/ 1214:
/***/ (function(module, exports) {

/**
 * This method returns `false`.
 *
 * @static
 * @memberOf _
 * @since 4.13.0
 * @category Util
 * @returns {boolean} Returns `false`.
 * @example
 *
 * _.times(2, _.stubFalse);
 * // => [false, false]
 */
function stubFalse() {
  return false;
}

module.exports = stubFalse;


/***/ }),

/***/ 1215:
/***/ (function(module, exports, __webpack_require__) {

var baseGetTag = __webpack_require__(324),
    isLength = __webpack_require__(937),
    isObjectLike = __webpack_require__(325);

/** `Object#toString` result references. */
var argsTag = '[object Arguments]',
    arrayTag = '[object Array]',
    boolTag = '[object Boolean]',
    dateTag = '[object Date]',
    errorTag = '[object Error]',
    funcTag = '[object Function]',
    mapTag = '[object Map]',
    numberTag = '[object Number]',
    objectTag = '[object Object]',
    regexpTag = '[object RegExp]',
    setTag = '[object Set]',
    stringTag = '[object String]',
    weakMapTag = '[object WeakMap]';

var arrayBufferTag = '[object ArrayBuffer]',
    dataViewTag = '[object DataView]',
    float32Tag = '[object Float32Array]',
    float64Tag = '[object Float64Array]',
    int8Tag = '[object Int8Array]',
    int16Tag = '[object Int16Array]',
    int32Tag = '[object Int32Array]',
    uint8Tag = '[object Uint8Array]',
    uint8ClampedTag = '[object Uint8ClampedArray]',
    uint16Tag = '[object Uint16Array]',
    uint32Tag = '[object Uint32Array]';

/** Used to identify `toStringTag` values of typed arrays. */
var typedArrayTags = {};
typedArrayTags[float32Tag] = typedArrayTags[float64Tag] =
typedArrayTags[int8Tag] = typedArrayTags[int16Tag] =
typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =
typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =
typedArrayTags[uint32Tag] = true;
typedArrayTags[argsTag] = typedArrayTags[arrayTag] =
typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =
typedArrayTags[dataViewTag] = typedArrayTags[dateTag] =
typedArrayTags[errorTag] = typedArrayTags[funcTag] =
typedArrayTags[mapTag] = typedArrayTags[numberTag] =
typedArrayTags[objectTag] = typedArrayTags[regexpTag] =
typedArrayTags[setTag] = typedArrayTags[stringTag] =
typedArrayTags[weakMapTag] = false;

/**
 * The base implementation of `_.isTypedArray` without Node.js optimizations.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
 */
function baseIsTypedArray(value) {
  return isObjectLike(value) &&
    isLength(value.length) && !!typedArrayTags[baseGetTag(value)];
}

module.exports = baseIsTypedArray;


/***/ }),

/***/ 1216:
/***/ (function(module, exports) {

/**
 * The base implementation of `_.unary` without support for storing metadata.
 *
 * @private
 * @param {Function} func The function to cap arguments for.
 * @returns {Function} Returns the new capped function.
 */
function baseUnary(func) {
  return function(value) {
    return func(value);
  };
}

module.exports = baseUnary;


/***/ }),

/***/ 1217:
/***/ (function(module, exports, __webpack_require__) {

/* WEBPACK VAR INJECTION */(function(module) {var freeGlobal = __webpack_require__(344);

/** Detect free variable `exports`. */
var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;

/** Detect free variable `module`. */
var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;

/** Detect the popular CommonJS extension `module.exports`. */
var moduleExports = freeModule && freeModule.exports === freeExports;

/** Detect free variable `process` from Node.js. */
var freeProcess = moduleExports && freeGlobal.process;

/** Used to access faster Node.js helpers. */
var nodeUtil = (function() {
  try {
    // Use `util.types` for Node.js 10+.
    var types = freeModule && freeModule.require && freeModule.require('util').types;

    if (types) {
      return types;
    }

    // Legacy `process.binding('util')` for Node.js < 10.
    return freeProcess && freeProcess.binding && freeProcess.binding('util');
  } catch (e) {}
}());

module.exports = nodeUtil;

/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(327)(module)))

/***/ }),

/***/ 1218:
/***/ (function(module, exports, __webpack_require__) {

var isPrototype = __webpack_require__(1219),
    nativeKeys = __webpack_require__(1220);

/** Used for built-in method references. */
var objectProto = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty = objectProto.hasOwnProperty;

/**
 * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.
 *
 * @private
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of property names.
 */
function baseKeys(object) {
  if (!isPrototype(object)) {
    return nativeKeys(object);
  }
  var result = [];
  for (var key in Object(object)) {
    if (hasOwnProperty.call(object, key) && key != 'constructor') {
      result.push(key);
    }
  }
  return result;
}

module.exports = baseKeys;


/***/ }),

/***/ 1219:
/***/ (function(module, exports) {

/** Used for built-in method references. */
var objectProto = Object.prototype;

/**
 * Checks if `value` is likely a prototype object.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.
 */
function isPrototype(value) {
  var Ctor = value && value.constructor,
      proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;

  return value === proto;
}

module.exports = isPrototype;


/***/ }),

/***/ 1220:
/***/ (function(module, exports, __webpack_require__) {

var overArg = __webpack_require__(1221);

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeKeys = overArg(Object.keys, Object);

module.exports = nativeKeys;


/***/ }),

/***/ 1221:
/***/ (function(module, exports) {

/**
 * Creates a unary function that invokes `func` with its argument transformed.
 *
 * @private
 * @param {Function} func The function to wrap.
 * @param {Function} transform The argument transform.
 * @returns {Function} Returns the new function.
 */
function overArg(func, transform) {
  return function(arg) {
    return func(transform(arg));
  };
}

module.exports = overArg;


/***/ }),

/***/ 1222:
/***/ (function(module, exports, __webpack_require__) {

var isFunction = __webpack_require__(949),
    isLength = __webpack_require__(937);

/**
 * Checks if `value` is array-like. A value is considered array-like if it's
 * not a function and has a `value.length` that's an integer greater than or
 * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is array-like, else `false`.
 * @example
 *
 * _.isArrayLike([1, 2, 3]);
 * // => true
 *
 * _.isArrayLike(document.body.children);
 * // => true
 *
 * _.isArrayLike('abc');
 * // => true
 *
 * _.isArrayLike(_.noop);
 * // => false
 */
function isArrayLike(value) {
  return value != null && isLength(value.length) && !isFunction(value);
}

module.exports = isArrayLike;


/***/ }),

/***/ 1223:
/***/ (function(module, exports, __webpack_require__) {

var DataView = __webpack_require__(1224),
    Map = __webpack_require__(935),
    Promise = __webpack_require__(1225),
    Set = __webpack_require__(1101),
    WeakMap = __webpack_require__(1226),
    baseGetTag = __webpack_require__(324),
    toSource = __webpack_require__(950);

/** `Object#toString` result references. */
var mapTag = '[object Map]',
    objectTag = '[object Object]',
    promiseTag = '[object Promise]',
    setTag = '[object Set]',
    weakMapTag = '[object WeakMap]';

var dataViewTag = '[object DataView]';

/** Used to detect maps, sets, and weakmaps. */
var dataViewCtorString = toSource(DataView),
    mapCtorString = toSource(Map),
    promiseCtorString = toSource(Promise),
    setCtorString = toSource(Set),
    weakMapCtorString = toSource(WeakMap);

/**
 * Gets the `toStringTag` of `value`.
 *
 * @private
 * @param {*} value The value to query.
 * @returns {string} Returns the `toStringTag`.
 */
var getTag = baseGetTag;

// Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6.
if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||
    (Map && getTag(new Map) != mapTag) ||
    (Promise && getTag(Promise.resolve()) != promiseTag) ||
    (Set && getTag(new Set) != setTag) ||
    (WeakMap && getTag(new WeakMap) != weakMapTag)) {
  getTag = function(value) {
    var result = baseGetTag(value),
        Ctor = result == objectTag ? value.constructor : undefined,
        ctorString = Ctor ? toSource(Ctor) : '';

    if (ctorString) {
      switch (ctorString) {
        case dataViewCtorString: return dataViewTag;
        case mapCtorString: return mapTag;
        case promiseCtorString: return promiseTag;
        case setCtorString: return setTag;
        case weakMapCtorString: return weakMapTag;
      }
    }
    return result;
  };
}

module.exports = getTag;


/***/ }),

/***/ 1224:
/***/ (function(module, exports, __webpack_require__) {

var getNative = __webpack_require__(920),
    root = __webpack_require__(173);

/* Built-in method references that are verified to be native. */
var DataView = getNative(root, 'DataView');

module.exports = DataView;


/***/ }),

/***/ 1225:
/***/ (function(module, exports, __webpack_require__) {

var getNative = __webpack_require__(920),
    root = __webpack_require__(173);

/* Built-in method references that are verified to be native. */
var Promise = getNative(root, 'Promise');

module.exports = Promise;


/***/ }),

/***/ 1226:
/***/ (function(module, exports, __webpack_require__) {

var getNative = __webpack_require__(920),
    root = __webpack_require__(173);

/* Built-in method references that are verified to be native. */
var WeakMap = getNative(root, 'WeakMap');

module.exports = WeakMap;


/***/ }),

/***/ 1227:
/***/ (function(module, exports, __webpack_require__) {

var isStrictComparable = __webpack_require__(1102),
    keys = __webpack_require__(1098);

/**
 * Gets the property names, values, and compare flags of `object`.
 *
 * @private
 * @param {Object} object The object to query.
 * @returns {Array} Returns the match data of `object`.
 */
function getMatchData(object) {
  var result = keys(object),
      length = result.length;

  while (length--) {
    var key = result[length],
        value = object[key];

    result[length] = [key, value, isStrictComparable(value)];
  }
  return result;
}

module.exports = getMatchData;


/***/ }),

/***/ 1228:
/***/ (function(module, exports, __webpack_require__) {

var baseIsEqual = __webpack_require__(1094),
    get = __webpack_require__(965),
    hasIn = __webpack_require__(1229),
    isKey = __webpack_require__(938),
    isStrictComparable = __webpack_require__(1102),
    matchesStrictComparable = __webpack_require__(1103),
    toKey = __webpack_require__(924);

/** Used to compose bitmasks for value comparisons. */
var COMPARE_PARTIAL_FLAG = 1,
    COMPARE_UNORDERED_FLAG = 2;

/**
 * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.
 *
 * @private
 * @param {string} path The path of the property to get.
 * @param {*} srcValue The value to match.
 * @returns {Function} Returns the new spec function.
 */
function baseMatchesProperty(path, srcValue) {
  if (isKey(path) && isStrictComparable(srcValue)) {
    return matchesStrictComparable(toKey(path), srcValue);
  }
  return function(object) {
    var objValue = get(object, path);
    return (objValue === undefined && objValue === srcValue)
      ? hasIn(object, path)
      : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG);
  };
}

module.exports = baseMatchesProperty;


/***/ }),

/***/ 1229:
/***/ (function(module, exports, __webpack_require__) {

var baseHasIn = __webpack_require__(1230),
    hasPath = __webpack_require__(966);

/**
 * Checks if `path` is a direct or inherited property of `object`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Object
 * @param {Object} object The object to query.
 * @param {Array|string} path The path to check.
 * @returns {boolean} Returns `true` if `path` exists, else `false`.
 * @example
 *
 * var object = _.create({ 'a': _.create({ 'b': 2 }) });
 *
 * _.hasIn(object, 'a');
 * // => true
 *
 * _.hasIn(object, 'a.b');
 * // => true
 *
 * _.hasIn(object, ['a', 'b']);
 * // => true
 *
 * _.hasIn(object, 'b');
 * // => false
 */
function hasIn(object, path) {
  return object != null && hasPath(object, path, baseHasIn);
}

module.exports = hasIn;


/***/ }),

/***/ 1230:
/***/ (function(module, exports) {

/**
 * The base implementation of `_.hasIn` without support for deep paths.
 *
 * @private
 * @param {Object} [object] The object to query.
 * @param {Array|string} key The key to check.
 * @returns {boolean} Returns `true` if `key` exists, else `false`.
 */
function baseHasIn(object, key) {
  return object != null && key in Object(object);
}

module.exports = baseHasIn;


/***/ }),

/***/ 1231:
/***/ (function(module, exports) {

/**
 * This method returns the first argument it receives.
 *
 * @static
 * @since 0.1.0
 * @memberOf _
 * @category Util
 * @param {*} value Any value.
 * @returns {*} Returns `value`.
 * @example
 *
 * var object = { 'a': 1 };
 *
 * console.log(_.identity(object) === object);
 * // => true
 */
function identity(value) {
  return value;
}

module.exports = identity;


/***/ }),

/***/ 1232:
/***/ (function(module, exports, __webpack_require__) {

var baseProperty = __webpack_require__(1174),
    basePropertyDeep = __webpack_require__(1233),
    isKey = __webpack_require__(938),
    toKey = __webpack_require__(924);

/**
 * Creates a function that returns the value at `path` of a given object.
 *
 * @static
 * @memberOf _
 * @since 2.4.0
 * @category Util
 * @param {Array|string} path The path of the property to get.
 * @returns {Function} Returns the new accessor function.
 * @example
 *
 * var objects = [
 *   { 'a': { 'b': 2 } },
 *   { 'a': { 'b': 1 } }
 * ];
 *
 * _.map(objects, _.property('a.b'));
 * // => [2, 1]
 *
 * _.map(_.sortBy(objects, _.property(['a', 'b'])), 'a.b');
 * // => [1, 2]
 */
function property(path) {
  return isKey(path) ? baseProperty(toKey(path)) : basePropertyDeep(path);
}

module.exports = property;


/***/ }),

/***/ 1233:
/***/ (function(module, exports, __webpack_require__) {

var baseGet = __webpack_require__(952);

/**
 * A specialized version of `baseProperty` which supports deep paths.
 *
 * @private
 * @param {Array|string} path The path of the property to get.
 * @returns {Function} Returns the new accessor function.
 */
function basePropertyDeep(path) {
  return function(object) {
    return baseGet(object, path);
  };
}

module.exports = basePropertyDeep;


/***/ }),

/***/ 1234:
/***/ (function(module, exports, __webpack_require__) {

var SetCache = __webpack_require__(1096),
    arrayIncludes = __webpack_require__(1235),
    arrayIncludesWith = __webpack_require__(1239),
    cacheHas = __webpack_require__(1097),
    createSet = __webpack_require__(1240),
    setToArray = __webpack_require__(981);

/** Used as the size to enable large array optimizations. */
var LARGE_ARRAY_SIZE = 200;

/**
 * The base implementation of `_.uniqBy` without support for iteratee shorthands.
 *
 * @private
 * @param {Array} array The array to inspect.
 * @param {Function} [iteratee] The iteratee invoked per element.
 * @param {Function} [comparator] The comparator invoked per element.
 * @returns {Array} Returns the new duplicate free array.
 */
function baseUniq(array, iteratee, comparator) {
  var index = -1,
      includes = arrayIncludes,
      length = array.length,
      isCommon = true,
      result = [],
      seen = result;

  if (comparator) {
    isCommon = false;
    includes = arrayIncludesWith;
  }
  else if (length >= LARGE_ARRAY_SIZE) {
    var set = iteratee ? null : createSet(array);
    if (set) {
      return setToArray(set);
    }
    isCommon = false;
    includes = cacheHas;
    seen = new SetCache;
  }
  else {
    seen = iteratee ? [] : result;
  }
  outer:
  while (++index < length) {
    var value = array[index],
        computed = iteratee ? iteratee(value) : value;

    value = (comparator || value !== 0) ? value : 0;
    if (isCommon && computed === computed) {
      var seenIndex = seen.length;
      while (seenIndex--) {
        if (seen[seenIndex] === computed) {
          continue outer;
        }
      }
      if (iteratee) {
        seen.push(computed);
      }
      result.push(value);
    }
    else if (!includes(seen, computed, comparator)) {
      if (seen !== result) {
        seen.push(computed);
      }
      result.push(value);
    }
  }
  return result;
}

module.exports = baseUniq;


/***/ }),

/***/ 1235:
/***/ (function(module, exports, __webpack_require__) {

var baseIndexOf = __webpack_require__(1236);

/**
 * A specialized version of `_.includes` for arrays without support for
 * specifying an index to search from.
 *
 * @private
 * @param {Array} [array] The array to inspect.
 * @param {*} target The value to search for.
 * @returns {boolean} Returns `true` if `target` is found, else `false`.
 */
function arrayIncludes(array, value) {
  var length = array == null ? 0 : array.length;
  return !!length && baseIndexOf(array, value, 0) > -1;
}

module.exports = arrayIncludes;


/***/ }),

/***/ 1236:
/***/ (function(module, exports, __webpack_require__) {

var baseFindIndex = __webpack_require__(1104),
    baseIsNaN = __webpack_require__(1237),
    strictIndexOf = __webpack_require__(1238);

/**
 * The base implementation of `_.indexOf` without `fromIndex` bounds checks.
 *
 * @private
 * @param {Array} array The array to inspect.
 * @param {*} value The value to search for.
 * @param {number} fromIndex The index to search from.
 * @returns {number} Returns the index of the matched value, else `-1`.
 */
function baseIndexOf(array, value, fromIndex) {
  return value === value
    ? strictIndexOf(array, value, fromIndex)
    : baseFindIndex(array, baseIsNaN, fromIndex);
}

module.exports = baseIndexOf;


/***/ }),

/***/ 1237:
/***/ (function(module, exports) {

/**
 * The base implementation of `_.isNaN` without support for number objects.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.
 */
function baseIsNaN(value) {
  return value !== value;
}

module.exports = baseIsNaN;


/***/ }),

/***/ 1238:
/***/ (function(module, exports) {

/**
 * A specialized version of `_.indexOf` which performs strict equality
 * comparisons of values, i.e. `===`.
 *
 * @private
 * @param {Array} array The array to inspect.
 * @param {*} value The value to search for.
 * @param {number} fromIndex The index to search from.
 * @returns {number} Returns the index of the matched value, else `-1`.
 */
function strictIndexOf(array, value, fromIndex) {
  var index = fromIndex - 1,
      length = array.length;

  while (++index < length) {
    if (array[index] === value) {
      return index;
    }
  }
  return -1;
}

module.exports = strictIndexOf;


/***/ }),

/***/ 1239:
/***/ (function(module, exports) {

/**
 * This function is like `arrayIncludes` except that it accepts a comparator.
 *
 * @private
 * @param {Array} [array] The array to inspect.
 * @param {*} target The value to search for.
 * @param {Function} comparator The comparator invoked per element.
 * @returns {boolean} Returns `true` if `target` is found, else `false`.
 */
function arrayIncludesWith(array, value, comparator) {
  var index = -1,
      length = array == null ? 0 : array.length;

  while (++index < length) {
    if (comparator(value, array[index])) {
      return true;
    }
  }
  return false;
}

module.exports = arrayIncludesWith;


/***/ }),

/***/ 1240:
/***/ (function(module, exports, __webpack_require__) {

var Set = __webpack_require__(1101),
    noop = __webpack_require__(1241),
    setToArray = __webpack_require__(981);

/** Used as references for various `Number` constants. */
var INFINITY = 1 / 0;

/**
 * Creates a set object of `values`.
 *
 * @private
 * @param {Array} values The values to add to the set.
 * @returns {Object} Returns the new set.
 */
var createSet = !(Set && (1 / setToArray(new Set([,-0]))[1]) == INFINITY) ? noop : function(values) {
  return new Set(values);
};

module.exports = createSet;


/***/ }),

/***/ 1241:
/***/ (function(module, exports) {

/**
 * This method returns `undefined`.
 *
 * @static
 * @memberOf _
 * @since 2.3.0
 * @category Util
 * @example
 *
 * _.times(2, _.noop);
 * // => [undefined, undefined]
 */
function noop() {
  // No operation performed.
}

module.exports = noop;


/***/ }),

/***/ 1242:
/***/ (function(module, exports, __webpack_require__) {

var baseFindIndex = __webpack_require__(1104),
    baseIteratee = __webpack_require__(1092),
    toInteger = __webpack_require__(1171);

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeMax = Math.max;

/**
 * This method is like `_.find` except that it returns the index of the first
 * element `predicate` returns truthy for instead of the element itself.
 *
 * @static
 * @memberOf _
 * @since 1.1.0
 * @category Array
 * @param {Array} array The array to inspect.
 * @param {Function} [predicate=_.identity] The function invoked per iteration.
 * @param {number} [fromIndex=0] The index to search from.
 * @returns {number} Returns the index of the found element, else `-1`.
 * @example
 *
 * var users = [
 *   { 'user': 'barney',  'active': false },
 *   { 'user': 'fred',    'active': false },
 *   { 'user': 'pebbles', 'active': true }
 * ];
 *
 * _.findIndex(users, function(o) { return o.user == 'barney'; });
 * // => 0
 *
 * // The `_.matches` iteratee shorthand.
 * _.findIndex(users, { 'user': 'fred', 'active': false });
 * // => 1
 *
 * // The `_.matchesProperty` iteratee shorthand.
 * _.findIndex(users, ['active', false]);
 * // => 0
 *
 * // The `_.property` iteratee shorthand.
 * _.findIndex(users, 'active');
 * // => 2
 */
function findIndex(array, predicate, fromIndex) {
  var length = array == null ? 0 : array.length;
  if (!length) {
    return -1;
  }
  var index = fromIndex == null ? 0 : toInteger(fromIndex);
  if (index < 0) {
    index = nativeMax(length + index, 0);
  }
  return baseFindIndex(array, baseIteratee(predicate, 3), index);
}

module.exports = findIndex;


/***/ }),

/***/ 1243:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;

var React = _interopRequireWildcard(__webpack_require__(0));

var _rcAnimate = _interopRequireDefault(__webpack_require__(333));

var _classnames = _interopRequireDefault(__webpack_require__(3));

var _utils = __webpack_require__(1105);

var _icon = _interopRequireDefault(__webpack_require__(27));

var _tooltip = _interopRequireDefault(__webpack_require__(174));

var _progress = _interopRequireDefault(__webpack_require__(1156));

var _configProvider = __webpack_require__(14);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function _getRequireWildcardCache() { return cache; }; return cache; }

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== "object" && typeof obj !== "function") { return { "default": obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj["default"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }

function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var UploadList =
/*#__PURE__*/
function (_React$Component) {
  _inherits(UploadList, _React$Component);

  function UploadList() {
    var _this;

    _classCallCheck(this, UploadList);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(UploadList).apply(this, arguments));

    _this.handlePreview = function (file, e) {
      var onPreview = _this.props.onPreview;

      if (!onPreview) {
        return;
      }

      e.preventDefault();
      return onPreview(file);
    };

    _this.handleDownload = function (file) {
      var onDownload = _this.props.onDownload;

      if (typeof onDownload === 'function') {
        onDownload(file);
      } else if (file.url) {
        window.open(file.url);
      }
    };

    _this.handleClose = function (file) {
      var onRemove = _this.props.onRemove;

      if (onRemove) {
        onRemove(file);
      }
    };

    _this.renderUploadList = function (_ref) {
      var _classNames4;

      var getPrefixCls = _ref.getPrefixCls;
      var _this$props = _this.props,
          customizePrefixCls = _this$props.prefixCls,
          _this$props$items = _this$props.items,
          items = _this$props$items === void 0 ? [] : _this$props$items,
          listType = _this$props.listType,
          showPreviewIcon = _this$props.showPreviewIcon,
          showRemoveIcon = _this$props.showRemoveIcon,
          showDownloadIcon = _this$props.showDownloadIcon,
          locale = _this$props.locale,
          progressAttr = _this$props.progressAttr;
      var prefixCls = getPrefixCls('upload', customizePrefixCls);
      var list = items.map(function (file) {
        var _classNames, _classNames2;

        var progress;
        var icon = React.createElement(_icon["default"], {
          type: file.status === 'uploading' ? 'loading' : 'paper-clip'
        });

        if (listType === 'picture' || listType === 'picture-card') {
          if (listType === 'picture-card' && file.status === 'uploading') {
            icon = React.createElement("div", {
              className: "".concat(prefixCls, "-list-item-uploading-text")
            }, locale.uploading);
          } else if (!file.thumbUrl && !file.url) {
            icon = React.createElement(_icon["default"], {
              className: "".concat(prefixCls, "-list-item-thumbnail"),
              type: "picture",
              theme: "twoTone"
            });
          } else {
            var thumbnail = (0, _utils.isImageUrl)(file) ? React.createElement("img", {
              src: file.thumbUrl || file.url,
              alt: file.name,
              className: "".concat(prefixCls, "-list-item-image")
            }) : React.createElement(_icon["default"], {
              type: "file",
              className: "".concat(prefixCls, "-list-item-icon"),
              theme: "twoTone"
            });
            icon = React.createElement("a", {
              className: "".concat(prefixCls, "-list-item-thumbnail"),
              onClick: function onClick(e) {
                return _this.handlePreview(file, e);
              },
              href: file.url || file.thumbUrl,
              target: "_blank",
              rel: "noopener noreferrer"
            }, thumbnail);
          }
        }

        if (file.status === 'uploading') {
          // show loading icon if upload progress listener is disabled
          var loadingProgress = 'percent' in file ? React.createElement(_progress["default"], _extends({
            type: "line"
          }, progressAttr, {
            percent: file.percent
          })) : null;
          progress = React.createElement("div", {
            className: "".concat(prefixCls, "-list-item-progress"),
            key: "progress"
          }, loadingProgress);
        }

        var infoUploadingClass = (0, _classnames["default"])((_classNames = {}, _defineProperty(_classNames, "".concat(prefixCls, "-list-item"), true), _defineProperty(_classNames, "".concat(prefixCls, "-list-item-").concat(file.status), true), _defineProperty(_classNames, "".concat(prefixCls, "-list-item-list-type-").concat(listType), true), _classNames));
        var linkProps = typeof file.linkProps === 'string' ? JSON.parse(file.linkProps) : file.linkProps;
        var removeIcon = showRemoveIcon ? React.createElement(_icon["default"], {
          type: "delete",
          title: locale.removeFile,
          onClick: function onClick() {
            return _this.handleClose(file);
          }
        }) : null;
        var downloadIcon = showDownloadIcon && file.status === 'done' ? React.createElement(_icon["default"], {
          type: "download",
          title: locale.downloadFile,
          onClick: function onClick() {
            return _this.handleDownload(file);
          }
        }) : null;
        var downloadOrDelete = listType !== 'picture-card' && React.createElement("span", {
          key: "download-delete",
          className: "".concat(prefixCls, "-list-item-card-actions ").concat(listType === 'picture' ? 'picture' : '')
        }, downloadIcon && React.createElement("a", {
          title: locale.downloadFile
        }, downloadIcon), removeIcon && React.createElement("a", {
          title: locale.removeFile
        }, removeIcon));
        var listItemNameClass = (0, _classnames["default"])((_classNames2 = {}, _defineProperty(_classNames2, "".concat(prefixCls, "-list-item-name"), true), _defineProperty(_classNames2, "".concat(prefixCls, "-list-item-name-icon-count-").concat([downloadIcon, removeIcon].filter(function (x) {
          return x;
        }).length), true), _classNames2));
        var preview = file.url ? [React.createElement("a", _extends({
          key: "view",
          target: "_blank",
          rel: "noopener noreferrer",
          className: listItemNameClass,
          title: file.name
        }, linkProps, {
          href: file.url,
          onClick: function onClick(e) {
            return _this.handlePreview(file, e);
          }
        }), file.name), downloadOrDelete] : [React.createElement("span", {
          key: "view",
          className: listItemNameClass,
          onClick: function onClick(e) {
            return _this.handlePreview(file, e);
          },
          title: file.name
        }, file.name), downloadOrDelete];
        var style = {
          pointerEvents: 'none',
          opacity: 0.5
        };
        var previewIcon = showPreviewIcon ? React.createElement("a", {
          href: file.url || file.thumbUrl,
          target: "_blank",
          rel: "noopener noreferrer",
          style: file.url || file.thumbUrl ? undefined : style,
          onClick: function onClick(e) {
            return _this.handlePreview(file, e);
          },
          title: locale.previewFile
        }, React.createElement(_icon["default"], {
          type: "eye-o"
        })) : null;
        var actions = listType === 'picture-card' && file.status !== 'uploading' && React.createElement("span", {
          className: "".concat(prefixCls, "-list-item-actions")
        }, previewIcon, file.status === 'done' && downloadIcon, removeIcon);
        var message;

        if (file.response && typeof file.response === 'string') {
          message = file.response;
        } else {
          message = file.error && file.error.statusText || locale.uploadError;
        }

        var iconAndPreview = React.createElement("span", null, icon, preview);
        var dom = React.createElement("div", {
          className: infoUploadingClass
        }, React.createElement("div", {
          className: "".concat(prefixCls, "-list-item-info")
        }, iconAndPreview), actions, React.createElement(_rcAnimate["default"], {
          transitionName: "fade",
          component: ""
        }, progress));
        var listContainerNameClass = (0, _classnames["default"])(_defineProperty({}, "".concat(prefixCls, "-list-picture-card-container"), listType === 'picture-card'));
        return React.createElement("div", {
          key: file.uid,
          className: listContainerNameClass
        }, file.status === 'error' ? React.createElement(_tooltip["default"], {
          title: message
        }, dom) : React.createElement("span", null, dom));
      });
      var listClassNames = (0, _classnames["default"])((_classNames4 = {}, _defineProperty(_classNames4, "".concat(prefixCls, "-list"), true), _defineProperty(_classNames4, "".concat(prefixCls, "-list-").concat(listType), true), _classNames4));
      var animationDirection = listType === 'picture-card' ? 'animate-inline' : 'animate';
      return React.createElement(_rcAnimate["default"], {
        transitionName: "".concat(prefixCls, "-").concat(animationDirection),
        component: "div",
        className: listClassNames
      }, list);
    };

    return _this;
  }

  _createClass(UploadList, [{
    key: "componentDidUpdate",
    value: function componentDidUpdate() {
      var _this2 = this;

      var _this$props2 = this.props,
          listType = _this$props2.listType,
          items = _this$props2.items,
          previewFile = _this$props2.previewFile;

      if (listType !== 'picture' && listType !== 'picture-card') {
        return;
      }

      (items || []).forEach(function (file) {
        if (typeof document === 'undefined' || typeof window === 'undefined' || !window.FileReader || !window.File || !(file.originFileObj instanceof File || file.originFileObj instanceof Blob) || file.thumbUrl !== undefined) {
          return;
        }

        file.thumbUrl = '';

        if (previewFile) {
          previewFile(file.originFileObj).then(function (previewDataUrl) {
            // Need append '' to avoid dead loop
            file.thumbUrl = previewDataUrl || '';

            _this2.forceUpdate();
          });
        }
      });
    }
  }, {
    key: "render",
    value: function render() {
      return React.createElement(_configProvider.ConfigConsumer, null, this.renderUploadList);
    }
  }]);

  return UploadList;
}(React.Component);

exports["default"] = UploadList;
UploadList.defaultProps = {
  listType: 'text',
  progressAttr: {
    strokeWidth: 2,
    showInfo: false
  },
  showRemoveIcon: true,
  showDownloadIcon: true,
  showPreviewIcon: true,
  previewFile: _utils.previewImage
};
//# sourceMappingURL=UploadList.js.map


/***/ }),

/***/ 1244:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;

var React = _interopRequireWildcard(__webpack_require__(0));

var _Upload = _interopRequireDefault(__webpack_require__(1090));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function _getRequireWildcardCache() { return cache; }; return cache; }

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== "object" && typeof obj !== "function") { return { "default": obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj["default"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }

function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

// stick class comoponent to avoid React ref warning inside Form
// https://github.com/ant-design/ant-design/issues/18707
// eslint-disable-next-line react/prefer-stateless-function
var Dragger =
/*#__PURE__*/
function (_React$Component) {
  _inherits(Dragger, _React$Component);

  function Dragger() {
    _classCallCheck(this, Dragger);

    return _possibleConstructorReturn(this, _getPrototypeOf(Dragger).apply(this, arguments));
  }

  _createClass(Dragger, [{
    key: "render",
    value: function render() {
      var props = this.props;
      return React.createElement(_Upload["default"], _extends({}, props, {
        type: "drag",
        style: _extends(_extends({}, props.style), {
          height: props.height
        })
      }));
    }
  }]);

  return Dragger;
}(React.Component);

exports["default"] = Dragger;
//# sourceMappingURL=Dragger.js.map


/***/ }),

/***/ 1248:
/***/ (function(module, exports, __webpack_require__) {

var invariant = __webpack_require__(48);

var hasOwnProperty = Object.prototype.hasOwnProperty;
var splice = Array.prototype.splice;

var toString = Object.prototype.toString
var type = function(obj) {
  return toString.call(obj).slice(8, -1);
}

var assign = Object.assign || /* istanbul ignore next */ function assign(target, source) {
  getAllKeys(source).forEach(function(key) {
    if (hasOwnProperty.call(source, key)) {
      target[key] = source[key];
    }
  });
  return target;
};

var getAllKeys = typeof Object.getOwnPropertySymbols === 'function' ?
  function(obj) { return Object.keys(obj).concat(Object.getOwnPropertySymbols(obj)) } :
  /* istanbul ignore next */ function(obj) { return Object.keys(obj) };

/* istanbul ignore next */
function copy(object) {
  if (Array.isArray(object)) {
    return assign(object.constructor(object.length), object)
  } else if (type(object) === 'Map') {
    return new Map(object)
  } else if (type(object) === 'Set') {
    return new Set(object)
  } else if (object && typeof object === 'object') {
    var prototype = Object.getPrototypeOf(object);
    return assign(Object.create(prototype), object);
  } else {
    return object;
  }
}

function newContext() {
  var commands = assign({}, defaultCommands);
  update.extend = function(directive, fn) {
    commands[directive] = fn;
  };
  update.isEquals = function(a, b) { return a === b; };

  return update;

  function update(object, spec) {
    if (typeof spec === 'function') {
      spec = { $apply: spec };
    }

    if (!(Array.isArray(object) && Array.isArray(spec))) {
      invariant(
        !Array.isArray(spec),
        'update(): You provided an invalid spec to update(). The spec may ' +
        'not contain an array except as the value of $set, $push, $unshift, ' +
        '$splice or any custom command allowing an array value.'
      );
    }

    invariant(
      typeof spec === 'object' && spec !== null,
      'update(): You provided an invalid spec to update(). The spec and ' +
      'every included key path must be plain objects containing one of the ' +
      'following commands: %s.',
      Object.keys(commands).join(', ')
    );

    var nextObject = object;
    var index, key;
    getAllKeys(spec).forEach(function(key) {
      if (hasOwnProperty.call(commands, key)) {
        var objectWasNextObject = object === nextObject;
        nextObject = commands[key](spec[key], nextObject, spec, object);
        if (objectWasNextObject && update.isEquals(nextObject, object)) {
          nextObject = object;
        }
      } else {
        var nextValueForKey =
          type(object) === 'Map'
            ? update(object.get(key), spec[key])
            : update(object[key], spec[key]);
        var nextObjectValue =
          type(nextObject) === 'Map'
              ? nextObject.get(key)
              : nextObject[key];
        if (!update.isEquals(nextValueForKey, nextObjectValue) || typeof nextValueForKey === 'undefined' && !hasOwnProperty.call(object, key)) {
          if (nextObject === object) {
            nextObject = copy(object);
          }
          if (type(nextObject) === 'Map') {
            nextObject.set(key, nextValueForKey);
          } else {
            nextObject[key] = nextValueForKey;
          }
        }
      }
    })
    return nextObject;
  }

}

var defaultCommands = {
  $push: function(value, nextObject, spec) {
    invariantPushAndUnshift(nextObject, spec, '$push');
    return value.length ? nextObject.concat(value) : nextObject;
  },
  $unshift: function(value, nextObject, spec) {
    invariantPushAndUnshift(nextObject, spec, '$unshift');
    return value.length ? value.concat(nextObject) : nextObject;
  },
  $splice: function(value, nextObject, spec, originalObject) {
    invariantSplices(nextObject, spec);
    value.forEach(function(args) {
      invariantSplice(args);
      if (nextObject === originalObject && args.length) nextObject = copy(originalObject);
      splice.apply(nextObject, args);
    });
    return nextObject;
  },
  $set: function(value, nextObject, spec) {
    invariantSet(spec);
    return value;
  },
  $toggle: function(targets, nextObject) {
    invariantSpecArray(targets, '$toggle');
    var nextObjectCopy = targets.length ? copy(nextObject) : nextObject;

    targets.forEach(function(target) {
      nextObjectCopy[target] = !nextObject[target];
    });

    return nextObjectCopy;
  },
  $unset: function(value, nextObject, spec, originalObject) {
    invariantSpecArray(value, '$unset');
    value.forEach(function(key) {
      if (Object.hasOwnProperty.call(nextObject, key)) {
        if (nextObject === originalObject) nextObject = copy(originalObject);
        delete nextObject[key];
      }
    });
    return nextObject;
  },
  $add: function(value, nextObject, spec, originalObject) {
    invariantMapOrSet(nextObject, '$add');
    invariantSpecArray(value, '$add');
    if (type(nextObject) === 'Map') {
      value.forEach(function(pair) {
        var key = pair[0];
        var value = pair[1];
        if (nextObject === originalObject && nextObject.get(key) !== value) nextObject = copy(originalObject);
        nextObject.set(key, value);
      });
    } else {
      value.forEach(function(value) {
        if (nextObject === originalObject && !nextObject.has(value)) nextObject = copy(originalObject);
        nextObject.add(value);
      });
    }
    return nextObject;
  },
  $remove: function(value, nextObject, spec, originalObject) {
    invariantMapOrSet(nextObject, '$remove');
    invariantSpecArray(value, '$remove');
    value.forEach(function(key) {
      if (nextObject === originalObject && nextObject.has(key)) nextObject = copy(originalObject);
      nextObject.delete(key);
    });
    return nextObject;
  },
  $merge: function(value, nextObject, spec, originalObject) {
    invariantMerge(nextObject, value);
    getAllKeys(value).forEach(function(key) {
      if (value[key] !== nextObject[key]) {
        if (nextObject === originalObject) nextObject = copy(originalObject);
        nextObject[key] = value[key];
      }
    });
    return nextObject;
  },
  $apply: function(value, original) {
    invariantApply(value);
    return value(original);
  }
};

var contextForExport = newContext();

module.exports = contextForExport;
module.exports.default = contextForExport;
module.exports.newContext = newContext;

// invariants

function invariantPushAndUnshift(value, spec, command) {
  invariant(
    Array.isArray(value),
    'update(): expected target of %s to be an array; got %s.',
    command,
    value
  );
  invariantSpecArray(spec[command], command)
}

function invariantSpecArray(spec, command) {
  invariant(
    Array.isArray(spec),
    'update(): expected spec of %s to be an array; got %s. ' +
    'Did you forget to wrap your parameter in an array?',
    command,
    spec
  );
}

function invariantSplices(value, spec) {
  invariant(
    Array.isArray(value),
    'Expected $splice target to be an array; got %s',
    value
  );
  invariantSplice(spec['$splice']);
}

function invariantSplice(value) {
  invariant(
    Array.isArray(value),
    'update(): expected spec of $splice to be an array of arrays; got %s. ' +
    'Did you forget to wrap your parameters in an array?',
    value
  );
}

function invariantApply(fn) {
  invariant(
    typeof fn === 'function',
    'update(): expected spec of $apply to be a function; got %s.',
    fn
  );
}

function invariantSet(spec) {
  invariant(
    Object.keys(spec).length === 1,
    'Cannot have more than one key in an object with $set'
  );
}

function invariantMerge(target, specValue) {
  invariant(
    specValue && typeof specValue === 'object',
    'update(): $merge expects a spec of type \'object\'; got %s',
    specValue
  );
  invariant(
    target && typeof target === 'object',
    'update(): $merge expects a target of type \'object\'; got %s',
    target
  );
}

function invariantMapOrSet(target, command) {
  var typeOfTarget = type(target);
  invariant(
    typeOfTarget === 'Map' || typeOfTarget === 'Set',
    'update(): %s expects a target of type Set or Map; got %s',
    command,
    typeOfTarget
  );
}


/***/ }),

/***/ 1333:
/***/ (function(module, exports, __webpack_require__) {

// style-loader: Adds some css to the DOM by adding a <style> tag

// load the styles
var content = __webpack_require__(1334);
if(typeof content === 'string') content = [[module.i, content, '']];
// Prepare cssTransformation
var transform;

var options = {"hmr":false}
options.transform = transform
// add the styles to the DOM
var update = __webpack_require__(318)(content, options);
if(content.locals) module.exports = content.locals;


/***/ }),

/***/ 1334:
/***/ (function(module, exports, __webpack_require__) {

exports = module.exports = __webpack_require__(317)(true);
// imports


// module
exports.push([module.i, ".ant-input-number{-webkit-box-sizing:border-box;box-sizing:border-box;font-variant:tabular-nums;list-style:none;-webkit-font-feature-settings:\"tnum\";font-feature-settings:\"tnum\";position:relative;width:100%;height:32px;padding:4px 11px;color:rgba(0,0,0,.65);font-size:14px;line-height:1.5;background-color:#fff;background-image:none;-webkit-transition:all .3s;-o-transition:all .3s;transition:all .3s;display:inline-block;width:90px;margin:0;padding:0;border:1px solid #d9d9d9;border-radius:4px}.ant-input-number::-moz-placeholder{color:#bfbfbf;opacity:1}.ant-input-number:-ms-input-placeholder{color:#bfbfbf}.ant-input-number::-webkit-input-placeholder{color:#bfbfbf}.ant-input-number:placeholder-shown{-o-text-overflow:ellipsis;text-overflow:ellipsis}.ant-input-number:focus{border-color:#40a9ff;border-right-width:1px!important;outline:0;-webkit-box-shadow:0 0 0 2px rgba(24,144,255,.2);box-shadow:0 0 0 2px rgba(24,144,255,.2)}.ant-input-number[disabled]{color:rgba(0,0,0,.25);background-color:#f5f5f5;cursor:not-allowed;opacity:1}.ant-input-number[disabled]:hover{border-color:#d9d9d9;border-right-width:1px!important}textarea.ant-input-number{max-width:100%;height:auto;min-height:32px;line-height:1.5;vertical-align:bottom;-webkit-transition:all .3s,height 0s;-o-transition:all .3s,height 0s;transition:all .3s,height 0s}.ant-input-number-lg{height:40px;padding:6px 11px}.ant-input-number-sm{height:24px;padding:1px 7px}.ant-input-number-handler{position:relative;display:block;width:100%;height:50%;overflow:hidden;color:rgba(0,0,0,.45);font-weight:700;line-height:0;text-align:center;-webkit-transition:all .1s linear;-o-transition:all .1s linear;transition:all .1s linear}.ant-input-number-handler:active{background:#f4f4f4}.ant-input-number-handler:hover .ant-input-number-handler-down-inner,.ant-input-number-handler:hover .ant-input-number-handler-up-inner{color:#40a9ff}.ant-input-number-handler-down-inner,.ant-input-number-handler-up-inner{display:inline-block;color:inherit;font-style:normal;line-height:0;text-align:center;text-transform:none;vertical-align:-.125em;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;position:absolute;right:4px;width:12px;height:12px;color:rgba(0,0,0,.45);line-height:12px;-webkit-transition:all .1s linear;-o-transition:all .1s linear;transition:all .1s linear;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none}.ant-input-number-handler-down-inner>*,.ant-input-number-handler-up-inner>*{line-height:1}.ant-input-number-handler-down-inner svg,.ant-input-number-handler-up-inner svg{display:inline-block}.ant-input-number-handler-down-inner:before,.ant-input-number-handler-up-inner:before{display:none}.ant-input-number-handler-down-inner .ant-input-number-handler-down-inner-icon,.ant-input-number-handler-down-inner .ant-input-number-handler-up-inner-icon,.ant-input-number-handler-up-inner .ant-input-number-handler-down-inner-icon,.ant-input-number-handler-up-inner .ant-input-number-handler-up-inner-icon{display:block}.ant-input-number-focused,.ant-input-number:hover{border-color:#40a9ff;border-right-width:1px!important}.ant-input-number-focused{outline:0;-webkit-box-shadow:0 0 0 2px rgba(24,144,255,.2);box-shadow:0 0 0 2px rgba(24,144,255,.2)}.ant-input-number-disabled{color:rgba(0,0,0,.25);background-color:#f5f5f5;cursor:not-allowed;opacity:1}.ant-input-number-disabled:hover{border-color:#d9d9d9;border-right-width:1px!important}.ant-input-number-disabled .ant-input-number-input{cursor:not-allowed}.ant-input-number-disabled .ant-input-number-handler-wrap{display:none}.ant-input-number-input{width:100%;height:30px;padding:0 11px;text-align:left;background-color:transparent;border:0;border-radius:4px;outline:0;-webkit-transition:all .3s linear;-o-transition:all .3s linear;transition:all .3s linear;-moz-appearance:textfield!important}.ant-input-number-input::-moz-placeholder{color:#bfbfbf;opacity:1}.ant-input-number-input:-ms-input-placeholder{color:#bfbfbf}.ant-input-number-input::-webkit-input-placeholder{color:#bfbfbf}.ant-input-number-input:placeholder-shown{-o-text-overflow:ellipsis;text-overflow:ellipsis}.ant-input-number-input[type=number]::-webkit-inner-spin-button,.ant-input-number-input[type=number]::-webkit-outer-spin-button{margin:0;-webkit-appearance:none}.ant-input-number-lg{padding:0;font-size:16px}.ant-input-number-lg input{height:38px}.ant-input-number-sm{padding:0}.ant-input-number-sm input{height:22px;padding:0 7px}.ant-input-number-handler-wrap{position:absolute;top:0;right:0;width:22px;height:100%;background:#fff;border-left:1px solid #d9d9d9;border-radius:0 4px 4px 0;opacity:0;-webkit-transition:opacity .24s linear .1s;-o-transition:opacity .24s linear .1s;transition:opacity .24s linear .1s}.ant-input-number-handler-wrap .ant-input-number-handler .ant-input-number-handler-down-inner,.ant-input-number-handler-wrap .ant-input-number-handler .ant-input-number-handler-up-inner{display:inline-block;font-size:12px;font-size:7px\\9;-webkit-transform:scale(.58333333) rotate(0deg);-ms-transform:scale(.58333333) rotate(0deg);transform:scale(.58333333) rotate(0deg);min-width:auto;margin-right:0}:root .ant-input-number-handler-wrap .ant-input-number-handler .ant-input-number-handler-down-inner,:root .ant-input-number-handler-wrap .ant-input-number-handler .ant-input-number-handler-up-inner{font-size:12px}.ant-input-number-handler-wrap:hover .ant-input-number-handler{height:40%}.ant-input-number:hover .ant-input-number-handler-wrap{opacity:1}.ant-input-number-handler-up{border-top-right-radius:4px;cursor:pointer}.ant-input-number-handler-up-inner{top:50%;margin-top:-5px;text-align:center}.ant-input-number-handler-up:hover{height:60%!important}.ant-input-number-handler-down{top:0;border-top:1px solid #d9d9d9;border-bottom-right-radius:4px;cursor:pointer}.ant-input-number-handler-down-inner{top:50%;margin-top:-6px;text-align:center}.ant-input-number-handler-down:hover{height:60%!important}.ant-input-number-handler-down-disabled,.ant-input-number-handler-up-disabled{cursor:not-allowed}.ant-input-number-handler-down-disabled:hover .ant-input-number-handler-down-inner,.ant-input-number-handler-up-disabled:hover .ant-input-number-handler-up-inner{color:rgba(0,0,0,.25)}", "", 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stylelint-disable at-rule-empty-line-before,at-rule-name-space-after,at-rule-no-unknown */\n/* stylelint-disable no-duplicate-selectors */\n/* stylelint-disable */\n/* stylelint-disable declaration-bang-space-before,no-duplicate-selectors,string-no-newline */\n.ant-input-number {\n  -webkit-box-sizing: border-box;\n          box-sizing: border-box;\n  font-variant: tabular-nums;\n  list-style: none;\n  -webkit-font-feature-settings: 'tnum';\n          font-feature-settings: 'tnum';\n  position: relative;\n  width: 100%;\n  height: 32px;\n  padding: 4px 11px;\n  color: rgba(0, 0, 0, 0.65);\n  font-size: 14px;\n  line-height: 1.5;\n  background-color: #fff;\n  background-image: none;\n  -webkit-transition: all 0.3s;\n  -o-transition: all 0.3s;\n  transition: all 0.3s;\n  display: inline-block;\n  width: 90px;\n  margin: 0;\n  padding: 0;\n  border: 1px solid #d9d9d9;\n  border-radius: 4px;\n}\n.ant-input-number::-moz-placeholder {\n  color: #bfbfbf;\n  opacity: 1;\n}\n.ant-input-number:-ms-input-placeholder {\n  color: #bfbfbf;\n}\n.ant-input-number::-webkit-input-placeholder {\n  color: #bfbfbf;\n}\n.ant-input-number:placeholder-shown {\n  -o-text-overflow: ellipsis;\n     text-overflow: ellipsis;\n}\n.ant-input-number:hover {\n  border-color: #40a9ff;\n  border-right-width: 1px !important;\n}\n.ant-input-number:focus {\n  border-color: #40a9ff;\n  border-right-width: 1px !important;\n  outline: 0;\n  -webkit-box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.2);\n          box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.2);\n}\n.ant-input-number-disabled {\n  color: rgba(0, 0, 0, 0.25);\n  background-color: #f5f5f5;\n  cursor: not-allowed;\n  opacity: 1;\n}\n.ant-input-number-disabled:hover {\n  border-color: #d9d9d9;\n  border-right-width: 1px !important;\n}\n.ant-input-number[disabled] {\n  color: rgba(0, 0, 0, 0.25);\n  background-color: #f5f5f5;\n  cursor: not-allowed;\n  opacity: 1;\n}\n.ant-input-number[disabled]:hover {\n  border-color: #d9d9d9;\n  border-right-width: 1px !important;\n}\ntextarea.ant-input-number {\n  max-width: 100%;\n  height: auto;\n  min-height: 32px;\n  line-height: 1.5;\n  vertical-align: bottom;\n  -webkit-transition: all 0.3s, height 0s;\n  -o-transition: all 0.3s, height 0s;\n  transition: all 0.3s, height 0s;\n}\n.ant-input-number-lg {\n  height: 40px;\n  padding: 6px 11px;\n  font-size: 16px;\n}\n.ant-input-number-sm {\n  height: 24px;\n  padding: 1px 7px;\n}\n.ant-input-number-handler {\n  position: relative;\n  display: block;\n  width: 100%;\n  height: 50%;\n  overflow: hidden;\n  color: rgba(0, 0, 0, 0.45);\n  font-weight: bold;\n  line-height: 0;\n  text-align: center;\n  -webkit-transition: all 0.1s linear;\n  -o-transition: all 0.1s linear;\n  transition: all 0.1s linear;\n}\n.ant-input-number-handler:active {\n  background: #f4f4f4;\n}\n.ant-input-number-handler:hover .ant-input-number-handler-up-inner,\n.ant-input-number-handler:hover .ant-input-number-handler-down-inner {\n  color: #40a9ff;\n}\n.ant-input-number-handler-up-inner,\n.ant-input-number-handler-down-inner {\n  display: inline-block;\n  color: inherit;\n  font-style: normal;\n  line-height: 0;\n  text-align: center;\n  text-transform: none;\n  vertical-align: -0.125em;\n  text-rendering: optimizeLegibility;\n  -webkit-font-smoothing: antialiased;\n  -moz-osx-font-smoothing: grayscale;\n  position: absolute;\n  right: 4px;\n  width: 12px;\n  height: 12px;\n  color: rgba(0, 0, 0, 0.45);\n  line-height: 12px;\n  -webkit-transition: all 0.1s linear;\n  -o-transition: all 0.1s linear;\n  transition: all 0.1s linear;\n  -webkit-user-select: none;\n     -moz-user-select: none;\n      -ms-user-select: none;\n          user-select: none;\n}\n.ant-input-number-handler-up-inner > *,\n.ant-input-number-handler-down-inner > * {\n  line-height: 1;\n}\n.ant-input-number-handler-up-inner svg,\n.ant-input-number-handler-down-inner svg {\n  display: inline-block;\n}\n.ant-input-number-handler-up-inner::before,\n.ant-input-number-handler-down-inner::before {\n  display: none;\n}\n.ant-input-number-handler-up-inner .ant-input-number-handler-up-inner-icon,\n.ant-input-number-handler-up-inner .ant-input-number-handler-down-inner-icon,\n.ant-input-number-handler-down-inner .ant-input-number-handler-up-inner-icon,\n.ant-input-number-handler-down-inner .ant-input-number-handler-down-inner-icon {\n  display: block;\n}\n.ant-input-number:hover {\n  border-color: #40a9ff;\n  border-right-width: 1px !important;\n}\n.ant-input-number-focused {\n  border-color: #40a9ff;\n  border-right-width: 1px !important;\n  outline: 0;\n  -webkit-box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.2);\n          box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.2);\n}\n.ant-input-number-disabled {\n  color: rgba(0, 0, 0, 0.25);\n  background-color: #f5f5f5;\n  cursor: not-allowed;\n  opacity: 1;\n}\n.ant-input-number-disabled:hover {\n  border-color: #d9d9d9;\n  border-right-width: 1px !important;\n}\n.ant-input-number-disabled .ant-input-number-input {\n  cursor: not-allowed;\n}\n.ant-input-number-disabled .ant-input-number-handler-wrap {\n  display: none;\n}\n.ant-input-number-input {\n  width: 100%;\n  height: 30px;\n  padding: 0 11px;\n  text-align: left;\n  background-color: transparent;\n  border: 0;\n  border-radius: 4px;\n  outline: 0;\n  -webkit-transition: all 0.3s linear;\n  -o-transition: all 0.3s linear;\n  transition: all 0.3s linear;\n  -moz-appearance: textfield !important;\n}\n.ant-input-number-input::-moz-placeholder {\n  color: #bfbfbf;\n  opacity: 1;\n}\n.ant-input-number-input:-ms-input-placeholder {\n  color: #bfbfbf;\n}\n.ant-input-number-input::-webkit-input-placeholder {\n  color: #bfbfbf;\n}\n.ant-input-number-input:placeholder-shown {\n  -o-text-overflow: ellipsis;\n     text-overflow: ellipsis;\n}\n.ant-input-number-input[type='number']::-webkit-inner-spin-button,\n.ant-input-number-input[type='number']::-webkit-outer-spin-button {\n  margin: 0;\n  -webkit-appearance: none;\n}\n.ant-input-number-lg {\n  padding: 0;\n  font-size: 16px;\n}\n.ant-input-number-lg input {\n  height: 38px;\n}\n.ant-input-number-sm {\n  padding: 0;\n}\n.ant-input-number-sm input {\n  height: 22px;\n  padding: 0 7px;\n}\n.ant-input-number-handler-wrap {\n  position: absolute;\n  top: 0;\n  right: 0;\n  width: 22px;\n  height: 100%;\n  background: #fff;\n  border-left: 1px solid #d9d9d9;\n  border-radius: 0 4px 4px 0;\n  opacity: 0;\n  -webkit-transition: opacity 0.24s linear 0.1s;\n  -o-transition: opacity 0.24s linear 0.1s;\n  transition: opacity 0.24s linear 0.1s;\n}\n.ant-input-number-handler-wrap .ant-input-number-handler .ant-input-number-handler-up-inner,\n.ant-input-number-handler-wrap .ant-input-number-handler .ant-input-number-handler-down-inner {\n  display: inline-block;\n  font-size: 12px;\n  font-size: 7px \\9;\n  -webkit-transform: scale(0.58333333) rotate(0deg);\n      -ms-transform: scale(0.58333333) rotate(0deg);\n          transform: scale(0.58333333) rotate(0deg);\n  min-width: auto;\n  margin-right: 0;\n}\n:root .ant-input-number-handler-wrap .ant-input-number-handler .ant-input-number-handler-up-inner,\n:root .ant-input-number-handler-wrap .ant-input-number-handler .ant-input-number-handler-down-inner {\n  font-size: 12px;\n}\n.ant-input-number-handler-wrap:hover .ant-input-number-handler {\n  height: 40%;\n}\n.ant-input-number:hover .ant-input-number-handler-wrap {\n  opacity: 1;\n}\n.ant-input-number-handler-up {\n  border-top-right-radius: 4px;\n  cursor: pointer;\n}\n.ant-input-number-handler-up-inner {\n  top: 50%;\n  margin-top: -5px;\n  text-align: center;\n}\n.ant-input-number-handler-up:hover {\n  height: 60% !important;\n}\n.ant-input-number-handler-down {\n  top: 0;\n  border-top: 1px solid #d9d9d9;\n  border-bottom-right-radius: 4px;\n  cursor: pointer;\n}\n.ant-input-number-handler-down-inner {\n  top: 50%;\n  margin-top: -6px;\n  text-align: center;\n}\n.ant-input-number-handler-down:hover {\n  height: 60% !important;\n}\n.ant-input-number-handler-up-disabled,\n.ant-input-number-handler-down-disabled {\n  cursor: not-allowed;\n}\n.ant-input-number-handler-up-disabled:hover .ant-input-number-handler-up-inner,\n.ant-input-number-handler-down-disabled:hover .ant-input-number-handler-down-inner {\n  color: rgba(0, 0, 0, 0.25);\n}\n"],"sourceRoot":""}]);

// exports


/***/ }),

/***/ 1335:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
Object.defineProperty(__webpack_exports__, "__esModule", { value: true });
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_babel_runtime_helpers_objectWithoutProperties__ = __webpack_require__(73);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_babel_runtime_helpers_objectWithoutProperties___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_0_babel_runtime_helpers_objectWithoutProperties__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_extends__ = __webpack_require__(19);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_extends___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_extends__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2_babel_runtime_helpers_classCallCheck__ = __webpack_require__(11);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2_babel_runtime_helpers_classCallCheck___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_2_babel_runtime_helpers_classCallCheck__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3_babel_runtime_helpers_possibleConstructorReturn__ = __webpack_require__(12);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3_babel_runtime_helpers_possibleConstructorReturn___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_3_babel_runtime_helpers_possibleConstructorReturn__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_4_babel_runtime_helpers_inherits__ = __webpack_require__(13);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_4_babel_runtime_helpers_inherits___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_4_babel_runtime_helpers_inherits__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_5_react__ = __webpack_require__(0);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_5_react___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_5_react__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_6_prop_types__ = __webpack_require__(1);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_6_prop_types___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_6_prop_types__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_7_classnames__ = __webpack_require__(3);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_7_classnames___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_7_classnames__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_8_rc_util_es_KeyCode__ = __webpack_require__(185);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_9__InputHandler__ = __webpack_require__(1336);











function noop() {}

function preventDefault(e) {
  e.preventDefault();
}

function defaultParser(input) {
  return input.replace(/[^\w\.-]+/g, '');
}

/**
 * When click and hold on a button - the speed of auto changin the value.
 */
var SPEED = 200;

/**
 * When click and hold on a button - the delay before auto changin the value.
 */
var DELAY = 600;

/**
 * Max Safe Integer -- on IE this is not available, so manually set the number in that case.
 * The reason this is used, instead of Infinity is because numbers above the MSI are unstable
 */
var MAX_SAFE_INTEGER = Number.MAX_SAFE_INTEGER || Math.pow(2, 53) - 1;

var isValidProps = function isValidProps(value) {
  return value !== undefined && value !== null;
};

var isEqual = function isEqual(oldValue, newValue) {
  return newValue === oldValue || typeof newValue === 'number' && typeof oldValue === 'number' && isNaN(newValue) && isNaN(oldValue);
};

var InputNumber = function (_React$Component) {
  __WEBPACK_IMPORTED_MODULE_4_babel_runtime_helpers_inherits___default()(InputNumber, _React$Component);

  function InputNumber(props) {
    __WEBPACK_IMPORTED_MODULE_2_babel_runtime_helpers_classCallCheck___default()(this, InputNumber);

    var _this = __WEBPACK_IMPORTED_MODULE_3_babel_runtime_helpers_possibleConstructorReturn___default()(this, _React$Component.call(this, props));

    _initialiseProps.call(_this);

    var value = void 0;
    if ('value' in props) {
      value = props.value;
    } else {
      value = props.defaultValue;
    }
    _this.state = {
      focused: props.autoFocus
    };
    var validValue = _this.getValidValue(_this.toNumber(value));
    _this.state = __WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_extends___default()({}, _this.state, {
      inputValue: _this.toPrecisionAsStep(validValue),
      value: validValue
    });
    return _this;
  }

  InputNumber.prototype.componentDidMount = function componentDidMount() {
    this.componentDidUpdate();
  };

  InputNumber.prototype.componentDidUpdate = function componentDidUpdate(prevProps) {
    var _props = this.props,
        value = _props.value,
        onChange = _props.onChange,
        max = _props.max,
        min = _props.min;
    var focused = this.state.focused;

    // Don't trigger in componentDidMount

    if (prevProps) {
      if (!isEqual(prevProps.value, value) || !isEqual(prevProps.max, max) || !isEqual(prevProps.min, min)) {
        var validValue = focused ? value : this.getValidValue(value);
        var nextInputValue = void 0;
        if (this.pressingUpOrDown) {
          nextInputValue = validValue;
        } else if (this.inputting) {
          nextInputValue = this.rawInput;
        } else {
          nextInputValue = this.toPrecisionAsStep(validValue);
        }
        this.setState({ // eslint-disable-line
          value: validValue,
          inputValue: nextInputValue
        });
      }

      // Trigger onChange when max or min change
      // https://github.com/ant-design/ant-design/issues/11574
      var nextValue = 'value' in this.props ? value : this.state.value;
      // ref: null < 20 === true
      // https://github.com/ant-design/ant-design/issues/14277
      if ('max' in this.props && prevProps.max !== max && typeof nextValue === 'number' && nextValue > max && onChange) {
        onChange(max);
      }
      if ('min' in this.props && prevProps.min !== min && typeof nextValue === 'number' && nextValue < min && onChange) {
        onChange(min);
      }
    }

    // Restore cursor
    try {
      // Firefox set the input cursor after it get focused.
      // This caused that if an input didn't init with the selection,
      // set will cause cursor not correct when first focus.
      // Safari will focus input if set selection. We need skip this.
      if (this.cursorStart !== undefined && this.state.focused) {
        // In most cases, the string after cursor is stable.
        // We can move the cursor before it

        if (
        // If not match full str, try to match part of str
        !this.partRestoreByAfter(this.cursorAfter) && this.state.value !== this.props.value) {
          // If not match any of then, let's just keep the position
          // TODO: Logic should not reach here, need check if happens
          var pos = this.cursorStart + 1;

          // If not have last string, just position to the end
          if (!this.cursorAfter) {
            pos = this.input.value.length;
          } else if (this.lastKeyCode === __WEBPACK_IMPORTED_MODULE_8_rc_util_es_KeyCode__["a" /* default */].BACKSPACE) {
            pos = this.cursorStart - 1;
          } else if (this.lastKeyCode === __WEBPACK_IMPORTED_MODULE_8_rc_util_es_KeyCode__["a" /* default */].DELETE) {
            pos = this.cursorStart;
          }
          this.fixCaret(pos, pos);
        } else if (this.currentValue === this.input.value) {
          // Handle some special key code
          switch (this.lastKeyCode) {
            case __WEBPACK_IMPORTED_MODULE_8_rc_util_es_KeyCode__["a" /* default */].BACKSPACE:
              this.fixCaret(this.cursorStart - 1, this.cursorStart - 1);
              break;
            case __WEBPACK_IMPORTED_MODULE_8_rc_util_es_KeyCode__["a" /* default */].DELETE:
              this.fixCaret(this.cursorStart + 1, this.cursorStart + 1);
              break;
            default:
            // Do nothing
          }
        }
      }
    } catch (e) {}
    // Do nothing


    // Reset last key
    this.lastKeyCode = null;

    // pressingUpOrDown is true means that someone just click up or down button
    if (!this.pressingUpOrDown) {
      return;
    }
    if (this.props.focusOnUpDown && this.state.focused) {
      if (document.activeElement !== this.input) {
        this.focus();
      }
    }

    this.pressingUpOrDown = false;
  };

  InputNumber.prototype.componentWillUnmount = function componentWillUnmount() {
    this.stop();
  };

  InputNumber.prototype.getCurrentValidValue = function getCurrentValidValue(value) {
    var val = value;
    if (val === '') {
      val = '';
    } else if (!this.isNotCompleteNumber(parseFloat(val, 10))) {
      val = this.getValidValue(val);
    } else {
      val = this.state.value;
    }
    return this.toNumber(val);
  };

  InputNumber.prototype.getRatio = function getRatio(e) {
    var ratio = 1;
    if (e.metaKey || e.ctrlKey) {
      ratio = 0.1;
    } else if (e.shiftKey) {
      ratio = 10;
    }
    return ratio;
  };

  InputNumber.prototype.getValueFromEvent = function getValueFromEvent(e) {
    // optimize for chinese input expierence
    // https://github.com/ant-design/ant-design/issues/8196
    var value = e.target.value.trim().replace(/。/g, '.');

    if (isValidProps(this.props.decimalSeparator)) {
      value = value.replace(this.props.decimalSeparator, '.');
    }

    return value;
  };

  InputNumber.prototype.getValidValue = function getValidValue(value) {
    var min = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : this.props.min;
    var max = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : this.props.max;

    var val = parseFloat(value, 10);
    // https://github.com/ant-design/ant-design/issues/7358
    if (isNaN(val)) {
      return value;
    }
    if (val < min) {
      val = min;
    }
    if (val > max) {
      val = max;
    }
    return val;
  };

  InputNumber.prototype.setValue = function setValue(v, callback) {
    // trigger onChange
    var precision = this.props.precision;

    var newValue = this.isNotCompleteNumber(parseFloat(v, 10)) ? null : parseFloat(v, 10);
    var _state = this.state,
        _state$value = _state.value,
        value = _state$value === undefined ? null : _state$value,
        _state$inputValue = _state.inputValue,
        inputValue = _state$inputValue === undefined ? null : _state$inputValue;
    // https://github.com/ant-design/ant-design/issues/7363
    // https://github.com/ant-design/ant-design/issues/16622

    var newValueInString = typeof newValue === 'number' ? newValue.toFixed(precision) : '' + newValue;
    var changed = newValue !== value || newValueInString !== '' + inputValue;
    if (!('value' in this.props)) {
      this.setState({
        value: newValue,
        inputValue: this.toPrecisionAsStep(v)
      }, callback);
    } else {
      // always set input value same as value
      this.setState({
        inputValue: this.toPrecisionAsStep(this.state.value)
      }, callback);
    }
    if (changed) {
      this.props.onChange(newValue);
    }

    return newValue;
  };

  InputNumber.prototype.getPrecision = function getPrecision(value) {
    if (isValidProps(this.props.precision)) {
      return this.props.precision;
    }
    var valueString = value.toString();
    if (valueString.indexOf('e-') >= 0) {
      return parseInt(valueString.slice(valueString.indexOf('e-') + 2), 10);
    }
    var precision = 0;
    if (valueString.indexOf('.') >= 0) {
      precision = valueString.length - valueString.indexOf('.') - 1;
    }
    return precision;
  };

  // step={1.0} value={1.51}
  // press +
  // then value should be 2.51, rather than 2.5
  // if this.props.precision is undefined
  // https://github.com/react-component/input-number/issues/39


  InputNumber.prototype.getMaxPrecision = function getMaxPrecision(currentValue) {
    var ratio = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 1;
    var _props2 = this.props,
        precision = _props2.precision,
        step = _props2.step;

    if (isValidProps(precision)) {
      return precision;
    }
    var ratioPrecision = this.getPrecision(ratio);
    var stepPrecision = this.getPrecision(step);
    var currentValuePrecision = this.getPrecision(currentValue);
    if (!currentValue) {
      return ratioPrecision + stepPrecision;
    }
    return Math.max(currentValuePrecision, ratioPrecision + stepPrecision);
  };

  InputNumber.prototype.getPrecisionFactor = function getPrecisionFactor(currentValue) {
    var ratio = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 1;

    var precision = this.getMaxPrecision(currentValue, ratio);
    return Math.pow(10, precision);
  };

  InputNumber.prototype.fixCaret = function fixCaret(start, end) {
    if (start === undefined || end === undefined || !this.input || !this.input.value) {
      return;
    }

    try {
      var currentStart = this.input.selectionStart;
      var currentEnd = this.input.selectionEnd;

      if (start !== currentStart || end !== currentEnd) {
        this.input.setSelectionRange(start, end);
      }
    } catch (e) {
      // Fix error in Chrome:
      // Failed to read the 'selectionStart' property from 'HTMLInputElement'
      // http://stackoverflow.com/q/21177489/3040605
    }
  };

  InputNumber.prototype.focus = function focus() {
    this.input.focus();
    this.recordCursorPosition();
  };

  InputNumber.prototype.blur = function blur() {
    this.input.blur();
  };

  InputNumber.prototype.formatWrapper = function formatWrapper(num) {
    // http://2ality.com/2012/03/signedzero.html
    // https://github.com/ant-design/ant-design/issues/9439
    if (this.props.formatter) {
      return this.props.formatter(num);
    }
    return num;
  };

  InputNumber.prototype.toPrecisionAsStep = function toPrecisionAsStep(num) {
    if (this.isNotCompleteNumber(num) || num === '') {
      return num;
    }
    var precision = Math.abs(this.getMaxPrecision(num));
    if (!isNaN(precision)) {
      return Number(num).toFixed(precision);
    }
    return num.toString();
  };

  // '1.' '1x' 'xx' '' => are not complete numbers


  InputNumber.prototype.isNotCompleteNumber = function isNotCompleteNumber(num) {
    return isNaN(num) || num === '' || num === null || num && num.toString().indexOf('.') === num.toString().length - 1;
  };

  InputNumber.prototype.toNumber = function toNumber(num) {
    var precision = this.props.precision;
    var focused = this.state.focused;
    // num.length > 16 => This is to prevent input of large numbers

    var numberIsTooLarge = num && num.length > 16 && focused;
    if (this.isNotCompleteNumber(num) || numberIsTooLarge) {
      return num;
    }
    if (isValidProps(precision)) {
      return Math.round(num * Math.pow(10, precision)) / Math.pow(10, precision);
    }
    return Number(num);
  };

  InputNumber.prototype.upStep = function upStep(val, rat) {
    var step = this.props.step;

    var precisionFactor = this.getPrecisionFactor(val, rat);
    var precision = Math.abs(this.getMaxPrecision(val, rat));
    var result = ((precisionFactor * val + precisionFactor * step * rat) / precisionFactor).toFixed(precision);
    return this.toNumber(result);
  };

  InputNumber.prototype.downStep = function downStep(val, rat) {
    var step = this.props.step;

    var precisionFactor = this.getPrecisionFactor(val, rat);
    var precision = Math.abs(this.getMaxPrecision(val, rat));
    var result = ((precisionFactor * val - precisionFactor * step * rat) / precisionFactor).toFixed(precision);
    return this.toNumber(result);
  };

  InputNumber.prototype.step = function step(type, e) {
    var _this2 = this;

    var ratio = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 1;
    var recursive = arguments[3];

    this.stop();
    if (e) {
      e.persist();
      e.preventDefault();
    }
    var props = this.props;
    if (props.disabled) {
      return;
    }
    var value = this.getCurrentValidValue(this.state.inputValue) || 0;
    if (this.isNotCompleteNumber(value)) {
      return;
    }
    var val = this[type + 'Step'](value, ratio);
    var outOfRange = val > props.max || val < props.min;
    if (val > props.max) {
      val = props.max;
    } else if (val < props.min) {
      val = props.min;
    }
    this.setValue(val);
    this.setState({
      focused: true
    });
    if (outOfRange) {
      return;
    }
    this.autoStepTimer = setTimeout(function () {
      _this2[type](e, ratio, true);
    }, recursive ? SPEED : DELAY);
  };

  InputNumber.prototype.render = function render() {
    var _classNames;

    var props = __WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_extends___default()({}, this.props);

    var prefixCls = props.prefixCls,
        disabled = props.disabled,
        readOnly = props.readOnly,
        useTouch = props.useTouch,
        autoComplete = props.autoComplete,
        upHandler = props.upHandler,
        downHandler = props.downHandler,
        rest = __WEBPACK_IMPORTED_MODULE_0_babel_runtime_helpers_objectWithoutProperties___default()(props, ['prefixCls', 'disabled', 'readOnly', 'useTouch', 'autoComplete', 'upHandler', 'downHandler']);

    var classes = __WEBPACK_IMPORTED_MODULE_7_classnames___default()((_classNames = {}, _classNames[prefixCls] = true, _classNames[props.className] = !!props.className, _classNames[prefixCls + '-disabled'] = disabled, _classNames[prefixCls + '-focused'] = this.state.focused, _classNames));
    var upDisabledClass = '';
    var downDisabledClass = '';
    var value = this.state.value;

    if (value || value === 0) {
      if (!isNaN(value)) {
        var val = Number(value);
        if (val >= props.max) {
          upDisabledClass = prefixCls + '-handler-up-disabled';
        }
        if (val <= props.min) {
          downDisabledClass = prefixCls + '-handler-down-disabled';
        }
      } else {
        upDisabledClass = prefixCls + '-handler-up-disabled';
        downDisabledClass = prefixCls + '-handler-down-disabled';
      }
    }

    var dataOrAriaAttributeProps = {};
    for (var key in props) {
      if (props.hasOwnProperty(key) && (key.substr(0, 5) === 'data-' || key.substr(0, 5) === 'aria-' || key === 'role')) {
        dataOrAriaAttributeProps[key] = props[key];
      }
    }

    var editable = !props.readOnly && !props.disabled;

    // focus state, show input value
    // unfocus state, show valid value
    var inputDisplayValue = this.getInputDisplayValue();

    var upEvents = void 0;
    var downEvents = void 0;
    if (useTouch) {
      upEvents = {
        onTouchStart: editable && !upDisabledClass ? this.up : noop,
        onTouchEnd: this.stop
      };
      downEvents = {
        onTouchStart: editable && !downDisabledClass ? this.down : noop,
        onTouchEnd: this.stop
      };
    } else {
      upEvents = {
        onMouseDown: editable && !upDisabledClass ? this.up : noop,
        onMouseUp: this.stop,
        onMouseLeave: this.stop
      };
      downEvents = {
        onMouseDown: editable && !downDisabledClass ? this.down : noop,
        onMouseUp: this.stop,
        onMouseLeave: this.stop
      };
    }

    var isUpDisabled = !!upDisabledClass || disabled || readOnly;
    var isDownDisabled = !!downDisabledClass || disabled || readOnly;
    // ref for test
    return __WEBPACK_IMPORTED_MODULE_5_react___default.a.createElement(
      'div',
      {
        className: classes,
        style: props.style,
        title: props.title,
        onMouseEnter: props.onMouseEnter,
        onMouseLeave: props.onMouseLeave,
        onMouseOver: props.onMouseOver,
        onMouseOut: props.onMouseOut
      },
      __WEBPACK_IMPORTED_MODULE_5_react___default.a.createElement(
        'div',
        { className: prefixCls + '-handler-wrap' },
        __WEBPACK_IMPORTED_MODULE_5_react___default.a.createElement(
          __WEBPACK_IMPORTED_MODULE_9__InputHandler__["a" /* default */],
          __WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_extends___default()({
            ref: this.saveUp,
            disabled: isUpDisabled,
            prefixCls: prefixCls,
            unselectable: 'unselectable'
          }, upEvents, {
            role: 'button',
            'aria-label': 'Increase Value',
            'aria-disabled': !!isUpDisabled,
            className: prefixCls + '-handler ' + prefixCls + '-handler-up ' + upDisabledClass
          }),
          upHandler || __WEBPACK_IMPORTED_MODULE_5_react___default.a.createElement('span', {
            unselectable: 'unselectable',
            className: prefixCls + '-handler-up-inner',
            onClick: preventDefault
          })
        ),
        __WEBPACK_IMPORTED_MODULE_5_react___default.a.createElement(
          __WEBPACK_IMPORTED_MODULE_9__InputHandler__["a" /* default */],
          __WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_extends___default()({
            ref: this.saveDown,
            disabled: isDownDisabled,
            prefixCls: prefixCls,
            unselectable: 'unselectable'
          }, downEvents, {
            role: 'button',
            'aria-label': 'Decrease Value',
            'aria-disabled': !!isDownDisabled,
            className: prefixCls + '-handler ' + prefixCls + '-handler-down ' + downDisabledClass
          }),
          downHandler || __WEBPACK_IMPORTED_MODULE_5_react___default.a.createElement('span', {
            unselectable: 'unselectable',
            className: prefixCls + '-handler-down-inner',
            onClick: preventDefault
          })
        )
      ),
      __WEBPACK_IMPORTED_MODULE_5_react___default.a.createElement(
        'div',
        {
          className: prefixCls + '-input-wrap'
        },
        __WEBPACK_IMPORTED_MODULE_5_react___default.a.createElement('input', __WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_extends___default()({
          role: 'spinbutton',
          'aria-valuemin': props.min,
          'aria-valuemax': props.max,
          'aria-valuenow': value,
          required: props.required,
          type: props.type,
          placeholder: props.placeholder,
          onClick: props.onClick,
          onMouseUp: this.onMouseUp,
          className: prefixCls + '-input',
          tabIndex: props.tabIndex,
          autoComplete: autoComplete,
          onFocus: this.onFocus,
          onBlur: this.onBlur,
          onKeyDown: editable ? this.onKeyDown : noop,
          onKeyUp: editable ? this.onKeyUp : noop,
          autoFocus: props.autoFocus,
          maxLength: props.maxLength,
          readOnly: props.readOnly,
          disabled: props.disabled,
          max: props.max,
          min: props.min,
          step: props.step,
          name: props.name,
          id: props.id,
          onChange: this.onChange,
          ref: this.saveInput,
          value: inputDisplayValue,
          pattern: props.pattern
        }, dataOrAriaAttributeProps))
      )
    );
  };

  return InputNumber;
}(__WEBPACK_IMPORTED_MODULE_5_react___default.a.Component);

InputNumber.propTypes = {
  value: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.oneOfType([__WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.number, __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.string]),
  defaultValue: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.oneOfType([__WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.number, __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.string]),
  focusOnUpDown: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.bool,
  autoFocus: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.bool,
  onChange: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.func,
  onPressEnter: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.func,
  onKeyDown: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.func,
  onKeyUp: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.func,
  prefixCls: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.string,
  tabIndex: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.oneOfType([__WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.string, __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.number]),
  disabled: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.bool,
  onFocus: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.func,
  onBlur: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.func,
  readOnly: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.bool,
  max: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.number,
  min: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.number,
  step: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.oneOfType([__WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.number, __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.string]),
  upHandler: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.node,
  downHandler: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.node,
  useTouch: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.bool,
  formatter: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.func,
  parser: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.func,
  onMouseEnter: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.func,
  onMouseLeave: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.func,
  onMouseOver: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.func,
  onMouseOut: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.func,
  onMouseUp: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.func,
  precision: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.number,
  required: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.bool,
  pattern: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.string,
  decimalSeparator: __WEBPACK_IMPORTED_MODULE_6_prop_types___default.a.string
};
InputNumber.defaultProps = {
  focusOnUpDown: true,
  useTouch: false,
  prefixCls: 'rc-input-number',
  min: -MAX_SAFE_INTEGER,
  step: 1,
  style: {},
  onChange: noop,
  onKeyDown: noop,
  onPressEnter: noop,
  onFocus: noop,
  onBlur: noop,
  parser: defaultParser,
  required: false,
  autoComplete: 'off'
};

var _initialiseProps = function _initialiseProps() {
  var _this3 = this;

  this.onKeyDown = function (e) {
    for (var _len = arguments.length, args = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
      args[_key - 1] = arguments[_key];
    }

    var _props3 = _this3.props,
        onKeyDown = _props3.onKeyDown,
        onPressEnter = _props3.onPressEnter;


    if (e.keyCode === __WEBPACK_IMPORTED_MODULE_8_rc_util_es_KeyCode__["a" /* default */].UP) {
      var ratio = _this3.getRatio(e);
      _this3.up(e, ratio);
      _this3.stop();
    } else if (e.keyCode === __WEBPACK_IMPORTED_MODULE_8_rc_util_es_KeyCode__["a" /* default */].DOWN) {
      var _ratio = _this3.getRatio(e);
      _this3.down(e, _ratio);
      _this3.stop();
    } else if (e.keyCode === __WEBPACK_IMPORTED_MODULE_8_rc_util_es_KeyCode__["a" /* default */].ENTER && onPressEnter) {
      onPressEnter(e);
    }

    // Trigger user key down
    _this3.recordCursorPosition();
    _this3.lastKeyCode = e.keyCode;
    if (onKeyDown) {
      onKeyDown.apply(undefined, [e].concat(args));
    }
  };

  this.onKeyUp = function (e) {
    for (var _len2 = arguments.length, args = Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
      args[_key2 - 1] = arguments[_key2];
    }

    var onKeyUp = _this3.props.onKeyUp;


    _this3.stop();

    _this3.recordCursorPosition();

    // Trigger user key up
    if (onKeyUp) {
      onKeyUp.apply(undefined, [e].concat(args));
    }
  };

  this.onChange = function (e) {
    var onChange = _this3.props.onChange;


    if (_this3.state.focused) {
      _this3.inputting = true;
    }
    _this3.rawInput = _this3.props.parser(_this3.getValueFromEvent(e));
    _this3.setState({ inputValue: _this3.rawInput });
    onChange(_this3.toNumber(_this3.rawInput)); // valid number or invalid string
  };

  this.onMouseUp = function () {
    var onMouseUp = _this3.props.onMouseUp;


    _this3.recordCursorPosition();

    if (onMouseUp) {
      onMouseUp.apply(undefined, arguments);
    }
  };

  this.onFocus = function () {
    var _props4;

    _this3.setState({
      focused: true
    });
    (_props4 = _this3.props).onFocus.apply(_props4, arguments);
  };

  this.onBlur = function (e) {
    for (var _len3 = arguments.length, args = Array(_len3 > 1 ? _len3 - 1 : 0), _key3 = 1; _key3 < _len3; _key3++) {
      args[_key3 - 1] = arguments[_key3];
    }

    var onBlur = _this3.props.onBlur;

    _this3.inputting = false;
    _this3.setState({
      focused: false
    });
    var value = _this3.getCurrentValidValue(_this3.state.inputValue);
    e.persist(); // fix https://github.com/react-component/input-number/issues/51
    var newValue = _this3.setValue(value);

    if (onBlur) {
      var originValue = _this3.input.value;
      var inputValue = _this3.getInputDisplayValue({ focus: false, value: newValue });
      _this3.input.value = inputValue;
      onBlur.apply(undefined, [e].concat(args));
      _this3.input.value = originValue;
    }
  };

  this.getInputDisplayValue = function (state) {
    var _ref = state || _this3.state,
        focused = _ref.focused,
        inputValue = _ref.inputValue,
        value = _ref.value;

    var inputDisplayValue = void 0;
    if (focused) {
      inputDisplayValue = inputValue;
    } else {
      inputDisplayValue = _this3.toPrecisionAsStep(value);
    }

    if (inputDisplayValue === undefined || inputDisplayValue === null) {
      inputDisplayValue = '';
    }

    var inputDisplayValueFormat = _this3.formatWrapper(inputDisplayValue);
    if (isValidProps(_this3.props.decimalSeparator)) {
      inputDisplayValueFormat = inputDisplayValueFormat.toString().replace('.', _this3.props.decimalSeparator);
    }

    return inputDisplayValueFormat;
  };

  this.recordCursorPosition = function () {
    // Record position
    try {
      _this3.cursorStart = _this3.input.selectionStart;
      _this3.cursorEnd = _this3.input.selectionEnd;
      _this3.currentValue = _this3.input.value;
      _this3.cursorBefore = _this3.input.value.substring(0, _this3.cursorStart);
      _this3.cursorAfter = _this3.input.value.substring(_this3.cursorEnd);
    } catch (e) {
      // Fix error in Chrome:
      // Failed to read the 'selectionStart' property from 'HTMLInputElement'
      // http://stackoverflow.com/q/21177489/3040605
    }
  };

  this.restoreByAfter = function (str) {
    if (str === undefined) return false;

    var fullStr = _this3.input.value;
    var index = fullStr.lastIndexOf(str);

    if (index === -1) return false;

    var prevCursorPos = _this3.cursorBefore.length;
    if (_this3.lastKeyCode === __WEBPACK_IMPORTED_MODULE_8_rc_util_es_KeyCode__["a" /* default */].DELETE && _this3.cursorBefore.charAt(prevCursorPos - 1) === str[0]) {
      _this3.fixCaret(prevCursorPos, prevCursorPos);
      return true;
    }

    if (index + str.length === fullStr.length) {
      _this3.fixCaret(index, index);

      return true;
    }
    return false;
  };

  this.partRestoreByAfter = function (str) {
    if (str === undefined) return false;

    // For loop from full str to the str with last char to map. e.g. 123
    // -> 123
    // -> 23
    // -> 3
    return Array.prototype.some.call(str, function (_, start) {
      var partStr = str.substring(start);

      return _this3.restoreByAfter(partStr);
    });
  };

  this.stop = function () {
    if (_this3.autoStepTimer) {
      clearTimeout(_this3.autoStepTimer);
    }
  };

  this.down = function (e, ratio, recursive) {
    _this3.pressingUpOrDown = true;
    _this3.step('down', e, ratio, recursive);
  };

  this.up = function (e, ratio, recursive) {
    _this3.pressingUpOrDown = true;
    _this3.step('up', e, ratio, recursive);
  };

  this.saveUp = function (node) {
    _this3.upHandler = node;
  };

  this.saveDown = function (node) {
    _this3.downHandler = node;
  };

  this.saveInput = function (node) {
    _this3.input = node;
  };
};

/* harmony default export */ __webpack_exports__["default"] = (InputNumber);

/***/ }),

/***/ 1336:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_babel_runtime_helpers_objectWithoutProperties__ = __webpack_require__(73);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_babel_runtime_helpers_objectWithoutProperties___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_0_babel_runtime_helpers_objectWithoutProperties__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_classCallCheck__ = __webpack_require__(11);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_classCallCheck___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_classCallCheck__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2_babel_runtime_helpers_possibleConstructorReturn__ = __webpack_require__(12);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2_babel_runtime_helpers_possibleConstructorReturn___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_2_babel_runtime_helpers_possibleConstructorReturn__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3_babel_runtime_helpers_inherits__ = __webpack_require__(13);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3_babel_runtime_helpers_inherits___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_3_babel_runtime_helpers_inherits__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_4_react__ = __webpack_require__(0);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_4_react___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_4_react__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_5_prop_types__ = __webpack_require__(1);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_5_prop_types___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_5_prop_types__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_6_rmc_feedback__ = __webpack_require__(1337);








var InputHandler = function (_Component) {
  __WEBPACK_IMPORTED_MODULE_3_babel_runtime_helpers_inherits___default()(InputHandler, _Component);

  function InputHandler() {
    __WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_classCallCheck___default()(this, InputHandler);

    return __WEBPACK_IMPORTED_MODULE_2_babel_runtime_helpers_possibleConstructorReturn___default()(this, _Component.apply(this, arguments));
  }

  InputHandler.prototype.render = function render() {
    var _props = this.props,
        prefixCls = _props.prefixCls,
        disabled = _props.disabled,
        otherProps = __WEBPACK_IMPORTED_MODULE_0_babel_runtime_helpers_objectWithoutProperties___default()(_props, ['prefixCls', 'disabled']);

    return __WEBPACK_IMPORTED_MODULE_4_react___default.a.createElement(
      __WEBPACK_IMPORTED_MODULE_6_rmc_feedback__["a" /* default */],
      {
        disabled: disabled,
        activeClassName: prefixCls + '-handler-active'
      },
      __WEBPACK_IMPORTED_MODULE_4_react___default.a.createElement('span', otherProps)
    );
  };

  return InputHandler;
}(__WEBPACK_IMPORTED_MODULE_4_react__["Component"]);

InputHandler.propTypes = {
  prefixCls: __WEBPACK_IMPORTED_MODULE_5_prop_types___default.a.string,
  disabled: __WEBPACK_IMPORTED_MODULE_5_prop_types___default.a.bool,
  onTouchStart: __WEBPACK_IMPORTED_MODULE_5_prop_types___default.a.func,
  onTouchEnd: __WEBPACK_IMPORTED_MODULE_5_prop_types___default.a.func,
  onMouseDown: __WEBPACK_IMPORTED_MODULE_5_prop_types___default.a.func,
  onMouseUp: __WEBPACK_IMPORTED_MODULE_5_prop_types___default.a.func,
  onMouseLeave: __WEBPACK_IMPORTED_MODULE_5_prop_types___default.a.func
};

/* harmony default export */ __webpack_exports__["a"] = (InputHandler);

/***/ }),

/***/ 1337:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0__TouchFeedback__ = __webpack_require__(1338);
/* harmony reexport (binding) */ __webpack_require__.d(__webpack_exports__, "a", function() { return __WEBPACK_IMPORTED_MODULE_0__TouchFeedback__["a"]; });


/***/ }),

/***/ 1338:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_babel_runtime_helpers_extends__ = __webpack_require__(19);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_babel_runtime_helpers_extends___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_0_babel_runtime_helpers_extends__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_classCallCheck__ = __webpack_require__(11);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_classCallCheck___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_classCallCheck__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2_babel_runtime_helpers_createClass__ = __webpack_require__(34);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2_babel_runtime_helpers_createClass___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_2_babel_runtime_helpers_createClass__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3_babel_runtime_helpers_possibleConstructorReturn__ = __webpack_require__(12);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3_babel_runtime_helpers_possibleConstructorReturn___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_3_babel_runtime_helpers_possibleConstructorReturn__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_4_babel_runtime_helpers_inherits__ = __webpack_require__(13);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_4_babel_runtime_helpers_inherits___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_4_babel_runtime_helpers_inherits__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_5_react__ = __webpack_require__(0);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_5_react___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_5_react__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_6_classnames__ = __webpack_require__(3);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_6_classnames___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_6_classnames__);








var TouchFeedback = function (_React$Component) {
    __WEBPACK_IMPORTED_MODULE_4_babel_runtime_helpers_inherits___default()(TouchFeedback, _React$Component);

    function TouchFeedback() {
        __WEBPACK_IMPORTED_MODULE_1_babel_runtime_helpers_classCallCheck___default()(this, TouchFeedback);

        var _this = __WEBPACK_IMPORTED_MODULE_3_babel_runtime_helpers_possibleConstructorReturn___default()(this, (TouchFeedback.__proto__ || Object.getPrototypeOf(TouchFeedback)).apply(this, arguments));

        _this.state = {
            active: false
        };
        _this.onTouchStart = function (e) {
            _this.triggerEvent('TouchStart', true, e);
        };
        _this.onTouchMove = function (e) {
            _this.triggerEvent('TouchMove', false, e);
        };
        _this.onTouchEnd = function (e) {
            _this.triggerEvent('TouchEnd', false, e);
        };
        _this.onTouchCancel = function (e) {
            _this.triggerEvent('TouchCancel', false, e);
        };
        _this.onMouseDown = function (e) {
            // pc simulate mobile
            _this.triggerEvent('MouseDown', true, e);
        };
        _this.onMouseUp = function (e) {
            _this.triggerEvent('MouseUp', false, e);
        };
        _this.onMouseLeave = function (e) {
            _this.triggerEvent('MouseLeave', false, e);
        };
        return _this;
    }

    __WEBPACK_IMPORTED_MODULE_2_babel_runtime_helpers_createClass___default()(TouchFeedback, [{
        key: 'componentDidUpdate',
        value: function componentDidUpdate() {
            if (this.props.disabled && this.state.active) {
                this.setState({
                    active: false
                });
            }
        }
    }, {
        key: 'triggerEvent',
        value: function triggerEvent(type, isActive, ev) {
            var eventType = 'on' + type;
            var children = this.props.children;

            if (children.props[eventType]) {
                children.props[eventType](ev);
            }
            if (isActive !== this.state.active) {
                this.setState({
                    active: isActive
                });
            }
        }
    }, {
        key: 'render',
        value: function render() {
            var _props = this.props,
                children = _props.children,
                disabled = _props.disabled,
                activeClassName = _props.activeClassName,
                activeStyle = _props.activeStyle;

            var events = disabled ? undefined : {
                onTouchStart: this.onTouchStart,
                onTouchMove: this.onTouchMove,
                onTouchEnd: this.onTouchEnd,
                onTouchCancel: this.onTouchCancel,
                onMouseDown: this.onMouseDown,
                onMouseUp: this.onMouseUp,
                onMouseLeave: this.onMouseLeave
            };
            var child = __WEBPACK_IMPORTED_MODULE_5_react___default.a.Children.only(children);
            if (!disabled && this.state.active) {
                var _child$props = child.props,
                    style = _child$props.style,
                    className = _child$props.className;

                if (activeStyle !== false) {
                    if (activeStyle) {
                        style = __WEBPACK_IMPORTED_MODULE_0_babel_runtime_helpers_extends___default()({}, style, activeStyle);
                    }
                    className = __WEBPACK_IMPORTED_MODULE_6_classnames___default()(className, activeClassName);
                }
                return __WEBPACK_IMPORTED_MODULE_5_react___default.a.cloneElement(child, __WEBPACK_IMPORTED_MODULE_0_babel_runtime_helpers_extends___default()({ className: className,
                    style: style }, events));
            }
            return __WEBPACK_IMPORTED_MODULE_5_react___default.a.cloneElement(child, events);
        }
    }]);

    return TouchFeedback;
}(__WEBPACK_IMPORTED_MODULE_5_react___default.a.Component);

/* harmony default export */ __webpack_exports__["a"] = (TouchFeedback);

TouchFeedback.defaultProps = {
    disabled: false
};

/***/ }),

/***/ 1435:
/***/ (function(module, exports, __webpack_require__) {

/* WEBPACK VAR INJECTION */(function(global, module) {var __WEBPACK_AMD_DEFINE_RESULT__;/**
 * @license
 * Lodash <https://lodash.com/>
 * Copyright OpenJS Foundation and other contributors <https://openjsf.org/>
 * Released under MIT license <https://lodash.com/license>
 * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
 * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 */
;(function() {

  /** Used as a safe reference for `undefined` in pre-ES5 environments. */
  var undefined;

  /** Used as the semantic version number. */
  var VERSION = '4.17.15';

  /** Used as the size to enable large array optimizations. */
  var LARGE_ARRAY_SIZE = 200;

  /** Error message constants. */
  var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://npms.io/search?q=ponyfill.',
      FUNC_ERROR_TEXT = 'Expected a function';

  /** Used to stand-in for `undefined` hash values. */
  var HASH_UNDEFINED = '__lodash_hash_undefined__';

  /** Used as the maximum memoize cache size. */
  var MAX_MEMOIZE_SIZE = 500;

  /** Used as the internal argument placeholder. */
  var PLACEHOLDER = '__lodash_placeholder__';

  /** Used to compose bitmasks for cloning. */
  var CLONE_DEEP_FLAG = 1,
      CLONE_FLAT_FLAG = 2,
      CLONE_SYMBOLS_FLAG = 4;

  /** Used to compose bitmasks for value comparisons. */
  var COMPARE_PARTIAL_FLAG = 1,
      COMPARE_UNORDERED_FLAG = 2;

  /** Used to compose bitmasks for function metadata. */
  var WRAP_BIND_FLAG = 1,
      WRAP_BIND_KEY_FLAG = 2,
      WRAP_CURRY_BOUND_FLAG = 4,
      WRAP_CURRY_FLAG = 8,
      WRAP_CURRY_RIGHT_FLAG = 16,
      WRAP_PARTIAL_FLAG = 32,
      WRAP_PARTIAL_RIGHT_FLAG = 64,
      WRAP_ARY_FLAG = 128,
      WRAP_REARG_FLAG = 256,
      WRAP_FLIP_FLAG = 512;

  /** Used as default options for `_.truncate`. */
  var DEFAULT_TRUNC_LENGTH = 30,
      DEFAULT_TRUNC_OMISSION = '...';

  /** Used to detect hot functions by number of calls within a span of milliseconds. */
  var HOT_COUNT = 800,
      HOT_SPAN = 16;

  /** Used to indicate the type of lazy iteratees. */
  var LAZY_FILTER_FLAG = 1,
      LAZY_MAP_FLAG = 2,
      LAZY_WHILE_FLAG = 3;

  /** Used as references for various `Number` constants. */
  var INFINITY = 1 / 0,
      MAX_SAFE_INTEGER = 9007199254740991,
      MAX_INTEGER = 1.7976931348623157e+308,
      NAN = 0 / 0;

  /** Used as references for the maximum length and index of an array. */
  var MAX_ARRAY_LENGTH = 4294967295,
      MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1,
      HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1;

  /** Used to associate wrap methods with their bit flags. */
  var wrapFlags = [
    ['ary', WRAP_ARY_FLAG],
    ['bind', WRAP_BIND_FLAG],
    ['bindKey', WRAP_BIND_KEY_FLAG],
    ['curry', WRAP_CURRY_FLAG],
    ['curryRight', WRAP_CURRY_RIGHT_FLAG],
    ['flip', WRAP_FLIP_FLAG],
    ['partial', WRAP_PARTIAL_FLAG],
    ['partialRight', WRAP_PARTIAL_RIGHT_FLAG],
    ['rearg', WRAP_REARG_FLAG]
  ];

  /** `Object#toString` result references. */
  var argsTag = '[object Arguments]',
      arrayTag = '[object Array]',
      asyncTag = '[object AsyncFunction]',
      boolTag = '[object Boolean]',
      dateTag = '[object Date]',
      domExcTag = '[object DOMException]',
      errorTag = '[object Error]',
      funcTag = '[object Function]',
      genTag = '[object GeneratorFunction]',
      mapTag = '[object Map]',
      numberTag = '[object Number]',
      nullTag = '[object Null]',
      objectTag = '[object Object]',
      promiseTag = '[object Promise]',
      proxyTag = '[object Proxy]',
      regexpTag = '[object RegExp]',
      setTag = '[object Set]',
      stringTag = '[object String]',
      symbolTag = '[object Symbol]',
      undefinedTag = '[object Undefined]',
      weakMapTag = '[object WeakMap]',
      weakSetTag = '[object WeakSet]';

  var arrayBufferTag = '[object ArrayBuffer]',
      dataViewTag = '[object DataView]',
      float32Tag = '[object Float32Array]',
      float64Tag = '[object Float64Array]',
      int8Tag = '[object Int8Array]',
      int16Tag = '[object Int16Array]',
      int32Tag = '[object Int32Array]',
      uint8Tag = '[object Uint8Array]',
      uint8ClampedTag = '[object Uint8ClampedArray]',
      uint16Tag = '[object Uint16Array]',
      uint32Tag = '[object Uint32Array]';

  /** Used to match empty string literals in compiled template source. */
  var reEmptyStringLeading = /\b__p \+= '';/g,
      reEmptyStringMiddle = /\b(__p \+=) '' \+/g,
      reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g;

  /** Used to match HTML entities and HTML characters. */
  var reEscapedHtml = /&(?:amp|lt|gt|quot|#39);/g,
      reUnescapedHtml = /[&<>"']/g,
      reHasEscapedHtml = RegExp(reEscapedHtml.source),
      reHasUnescapedHtml = RegExp(reUnescapedHtml.source);

  /** Used to match template delimiters. */
  var reEscape = /<%-([\s\S]+?)%>/g,
      reEvaluate = /<%([\s\S]+?)%>/g,
      reInterpolate = /<%=([\s\S]+?)%>/g;

  /** Used to match property names within property paths. */
  var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/,
      reIsPlainProp = /^\w*$/,
      rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g;

  /**
   * Used to match `RegExp`
   * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).
   */
  var reRegExpChar = /[\\^$.*+?()[\]{}|]/g,
      reHasRegExpChar = RegExp(reRegExpChar.source);

  /** Used to match leading and trailing whitespace. */
  var reTrim = /^\s+|\s+$/g,
      reTrimStart = /^\s+/,
      reTrimEnd = /\s+$/;

  /** Used to match wrap detail comments. */
  var reWrapComment = /\{(?:\n\/\* \[wrapped with .+\] \*\/)?\n?/,
      reWrapDetails = /\{\n\/\* \[wrapped with (.+)\] \*/,
      reSplitDetails = /,? & /;

  /** Used to match words composed of alphanumeric characters. */
  var reAsciiWord = /[^\x00-\x2f\x3a-\x40\x5b-\x60\x7b-\x7f]+/g;

  /** Used to match backslashes in property paths. */
  var reEscapeChar = /\\(\\)?/g;

  /**
   * Used to match
   * [ES template delimiters](http://ecma-international.org/ecma-262/7.0/#sec-template-literal-lexical-components).
   */
  var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g;

  /** Used to match `RegExp` flags from their coerced string values. */
  var reFlags = /\w*$/;

  /** Used to detect bad signed hexadecimal string values. */
  var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;

  /** Used to detect binary string values. */
  var reIsBinary = /^0b[01]+$/i;

  /** Used to detect host constructors (Safari). */
  var reIsHostCtor = /^\[object .+?Constructor\]$/;

  /** Used to detect octal string values. */
  var reIsOctal = /^0o[0-7]+$/i;

  /** Used to detect unsigned integer values. */
  var reIsUint = /^(?:0|[1-9]\d*)$/;

  /** Used to match Latin Unicode letters (excluding mathematical operators). */
  var reLatin = /[\xc0-\xd6\xd8-\xf6\xf8-\xff\u0100-\u017f]/g;

  /** Used to ensure capturing order of template delimiters. */
  var reNoMatch = /($^)/;

  /** Used to match unescaped characters in compiled string literals. */
  var reUnescapedString = /['\n\r\u2028\u2029\\]/g;

  /** Used to compose unicode character classes. */
  var rsAstralRange = '\\ud800-\\udfff',
      rsComboMarksRange = '\\u0300-\\u036f',
      reComboHalfMarksRange = '\\ufe20-\\ufe2f',
      rsComboSymbolsRange = '\\u20d0-\\u20ff',
      rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,
      rsDingbatRange = '\\u2700-\\u27bf',
      rsLowerRange = 'a-z\\xdf-\\xf6\\xf8-\\xff',
      rsMathOpRange = '\\xac\\xb1\\xd7\\xf7',
      rsNonCharRange = '\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\xbf',
      rsPunctuationRange = '\\u2000-\\u206f',
      rsSpaceRange = ' \\t\\x0b\\f\\xa0\\ufeff\\n\\r\\u2028\\u2029\\u1680\\u180e\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200a\\u202f\\u205f\\u3000',
      rsUpperRange = 'A-Z\\xc0-\\xd6\\xd8-\\xde',
      rsVarRange = '\\ufe0e\\ufe0f',
      rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange;

  /** Used to compose unicode capture groups. */
  var rsApos = "['\u2019]",
      rsAstral = '[' + rsAstralRange + ']',
      rsBreak = '[' + rsBreakRange + ']',
      rsCombo = '[' + rsComboRange + ']',
      rsDigits = '\\d+',
      rsDingbat = '[' + rsDingbatRange + ']',
      rsLower = '[' + rsLowerRange + ']',
      rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']',
      rsFitz = '\\ud83c[\\udffb-\\udfff]',
      rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',
      rsNonAstral = '[^' + rsAstralRange + ']',
      rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}',
      rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]',
      rsUpper = '[' + rsUpperRange + ']',
      rsZWJ = '\\u200d';

  /** Used to compose unicode regexes. */
  var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')',
      rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')',
      rsOptContrLower = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?',
      rsOptContrUpper = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?',
      reOptMod = rsModifier + '?',
      rsOptVar = '[' + rsVarRange + ']?',
      rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',
      rsOrdLower = '\\d*(?:1st|2nd|3rd|(?![123])\\dth)(?=\\b|[A-Z_])',
      rsOrdUpper = '\\d*(?:1ST|2ND|3RD|(?![123])\\dTH)(?=\\b|[a-z_])',
      rsSeq = rsOptVar + reOptMod + rsOptJoin,
      rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq,
      rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';

  /** Used to match apostrophes. */
  var reApos = RegExp(rsApos, 'g');

  /**
   * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and
   * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols).
   */
  var reComboMark = RegExp(rsCombo, 'g');

  /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */
  var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');

  /** Used to match complex or compound words. */
  var reUnicodeWord = RegExp([
    rsUpper + '?' + rsLower + '+' + rsOptContrLower + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')',
    rsMiscUpper + '+' + rsOptContrUpper + '(?=' + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + ')',
    rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower,
    rsUpper + '+' + rsOptContrUpper,
    rsOrdUpper,
    rsOrdLower,
    rsDigits,
    rsEmoji
  ].join('|'), 'g');

  /** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */
  var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange  + rsComboRange + rsVarRange + ']');

  /** Used to detect strings that need a more robust regexp to match words. */
  var reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/;

  /** Used to assign default `context` object properties. */
  var contextProps = [
    'Array', 'Buffer', 'DataView', 'Date', 'Error', 'Float32Array', 'Float64Array',
    'Function', 'Int8Array', 'Int16Array', 'Int32Array', 'Map', 'Math', 'Object',
    'Promise', 'RegExp', 'Set', 'String', 'Symbol', 'TypeError', 'Uint8Array',
    'Uint8ClampedArray', 'Uint16Array', 'Uint32Array', 'WeakMap',
    '_', 'clearTimeout', 'isFinite', 'parseInt', 'setTimeout'
  ];

  /** Used to make template sourceURLs easier to identify. */
  var templateCounter = -1;

  /** Used to identify `toStringTag` values of typed arrays. */
  var typedArrayTags = {};
  typedArrayTags[float32Tag] = typedArrayTags[float64Tag] =
  typedArrayTags[int8Tag] = typedArrayTags[int16Tag] =
  typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =
  typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =
  typedArrayTags[uint32Tag] = true;
  typedArrayTags[argsTag] = typedArrayTags[arrayTag] =
  typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =
  typedArrayTags[dataViewTag] = typedArrayTags[dateTag] =
  typedArrayTags[errorTag] = typedArrayTags[funcTag] =
  typedArrayTags[mapTag] = typedArrayTags[numberTag] =
  typedArrayTags[objectTag] = typedArrayTags[regexpTag] =
  typedArrayTags[setTag] = typedArrayTags[stringTag] =
  typedArrayTags[weakMapTag] = false;

  /** Used to identify `toStringTag` values supported by `_.clone`. */
  var cloneableTags = {};
  cloneableTags[argsTag] = cloneableTags[arrayTag] =
  cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] =
  cloneableTags[boolTag] = cloneableTags[dateTag] =
  cloneableTags[float32Tag] = cloneableTags[float64Tag] =
  cloneableTags[int8Tag] = cloneableTags[int16Tag] =
  cloneableTags[int32Tag] = cloneableTags[mapTag] =
  cloneableTags[numberTag] = cloneableTags[objectTag] =
  cloneableTags[regexpTag] = cloneableTags[setTag] =
  cloneableTags[stringTag] = cloneableTags[symbolTag] =
  cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] =
  cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;
  cloneableTags[errorTag] = cloneableTags[funcTag] =
  cloneableTags[weakMapTag] = false;

  /** Used to map Latin Unicode letters to basic Latin letters. */
  var deburredLetters = {
    // Latin-1 Supplement block.
    '\xc0': 'A',  '\xc1': 'A', '\xc2': 'A', '\xc3': 'A', '\xc4': 'A', '\xc5': 'A',
    '\xe0': 'a',  '\xe1': 'a', '\xe2': 'a', '\xe3': 'a', '\xe4': 'a', '\xe5': 'a',
    '\xc7': 'C',  '\xe7': 'c',
    '\xd0': 'D',  '\xf0': 'd',
    '\xc8': 'E',  '\xc9': 'E', '\xca': 'E', '\xcb': 'E',
    '\xe8': 'e',  '\xe9': 'e', '\xea': 'e', '\xeb': 'e',
    '\xcc': 'I',  '\xcd': 'I', '\xce': 'I', '\xcf': 'I',
    '\xec': 'i',  '\xed': 'i', '\xee': 'i', '\xef': 'i',
    '\xd1': 'N',  '\xf1': 'n',
    '\xd2': 'O',  '\xd3': 'O', '\xd4': 'O', '\xd5': 'O', '\xd6': 'O', '\xd8': 'O',
    '\xf2': 'o',  '\xf3': 'o', '\xf4': 'o', '\xf5': 'o', '\xf6': 'o', '\xf8': 'o',
    '\xd9': 'U',  '\xda': 'U', '\xdb': 'U', '\xdc': 'U',
    '\xf9': 'u',  '\xfa': 'u', '\xfb': 'u', '\xfc': 'u',
    '\xdd': 'Y',  '\xfd': 'y', '\xff': 'y',
    '\xc6': 'Ae', '\xe6': 'ae',
    '\xde': 'Th', '\xfe': 'th',
    '\xdf': 'ss',
    // Latin Extended-A block.
    '\u0100': 'A',  '\u0102': 'A', '\u0104': 'A',
    '\u0101': 'a',  '\u0103': 'a', '\u0105': 'a',
    '\u0106': 'C',  '\u0108': 'C', '\u010a': 'C', '\u010c': 'C',
    '\u0107': 'c',  '\u0109': 'c', '\u010b': 'c', '\u010d': 'c',
    '\u010e': 'D',  '\u0110': 'D', '\u010f': 'd', '\u0111': 'd',
    '\u0112': 'E',  '\u0114': 'E', '\u0116': 'E', '\u0118': 'E', '\u011a': 'E',
    '\u0113': 'e',  '\u0115': 'e', '\u0117': 'e', '\u0119': 'e', '\u011b': 'e',
    '\u011c': 'G',  '\u011e': 'G', '\u0120': 'G', '\u0122': 'G',
    '\u011d': 'g',  '\u011f': 'g', '\u0121': 'g', '\u0123': 'g',
    '\u0124': 'H',  '\u0126': 'H', '\u0125': 'h', '\u0127': 'h',
    '\u0128': 'I',  '\u012a': 'I', '\u012c': 'I', '\u012e': 'I', '\u0130': 'I',
    '\u0129': 'i',  '\u012b': 'i', '\u012d': 'i', '\u012f': 'i', '\u0131': 'i',
    '\u0134': 'J',  '\u0135': 'j',
    '\u0136': 'K',  '\u0137': 'k', '\u0138': 'k',
    '\u0139': 'L',  '\u013b': 'L', '\u013d': 'L', '\u013f': 'L', '\u0141': 'L',
    '\u013a': 'l',  '\u013c': 'l', '\u013e': 'l', '\u0140': 'l', '\u0142': 'l',
    '\u0143': 'N',  '\u0145': 'N', '\u0147': 'N', '\u014a': 'N',
    '\u0144': 'n',  '\u0146': 'n', '\u0148': 'n', '\u014b': 'n',
    '\u014c': 'O',  '\u014e': 'O', '\u0150': 'O',
    '\u014d': 'o',  '\u014f': 'o', '\u0151': 'o',
    '\u0154': 'R',  '\u0156': 'R', '\u0158': 'R',
    '\u0155': 'r',  '\u0157': 'r', '\u0159': 'r',
    '\u015a': 'S',  '\u015c': 'S', '\u015e': 'S', '\u0160': 'S',
    '\u015b': 's',  '\u015d': 's', '\u015f': 's', '\u0161': 's',
    '\u0162': 'T',  '\u0164': 'T', '\u0166': 'T',
    '\u0163': 't',  '\u0165': 't', '\u0167': 't',
    '\u0168': 'U',  '\u016a': 'U', '\u016c': 'U', '\u016e': 'U', '\u0170': 'U', '\u0172': 'U',
    '\u0169': 'u',  '\u016b': 'u', '\u016d': 'u', '\u016f': 'u', '\u0171': 'u', '\u0173': 'u',
    '\u0174': 'W',  '\u0175': 'w',
    '\u0176': 'Y',  '\u0177': 'y', '\u0178': 'Y',
    '\u0179': 'Z',  '\u017b': 'Z', '\u017d': 'Z',
    '\u017a': 'z',  '\u017c': 'z', '\u017e': 'z',
    '\u0132': 'IJ', '\u0133': 'ij',
    '\u0152': 'Oe', '\u0153': 'oe',
    '\u0149': "'n", '\u017f': 's'
  };

  /** Used to map characters to HTML entities. */
  var htmlEscapes = {
    '&': '&amp;',
    '<': '&lt;',
    '>': '&gt;',
    '"': '&quot;',
    "'": '&#39;'
  };

  /** Used to map HTML entities to characters. */
  var htmlUnescapes = {
    '&amp;': '&',
    '&lt;': '<',
    '&gt;': '>',
    '&quot;': '"',
    '&#39;': "'"
  };

  /** Used to escape characters for inclusion in compiled string literals. */
  var stringEscapes = {
    '\\': '\\',
    "'": "'",
    '\n': 'n',
    '\r': 'r',
    '\u2028': 'u2028',
    '\u2029': 'u2029'
  };

  /** Built-in method references without a dependency on `root`. */
  var freeParseFloat = parseFloat,
      freeParseInt = parseInt;

  /** Detect free variable `global` from Node.js. */
  var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;

  /** Detect free variable `self`. */
  var freeSelf = typeof self == 'object' && self && self.Object === Object && self;

  /** Used as a reference to the global object. */
  var root = freeGlobal || freeSelf || Function('return this')();

  /** Detect free variable `exports`. */
  var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;

  /** Detect free variable `module`. */
  var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;

  /** Detect the popular CommonJS extension `module.exports`. */
  var moduleExports = freeModule && freeModule.exports === freeExports;

  /** Detect free variable `process` from Node.js. */
  var freeProcess = moduleExports && freeGlobal.process;

  /** Used to access faster Node.js helpers. */
  var nodeUtil = (function() {
    try {
      // Use `util.types` for Node.js 10+.
      var types = freeModule && freeModule.require && freeModule.require('util').types;

      if (types) {
        return types;
      }

      // Legacy `process.binding('util')` for Node.js < 10.
      return freeProcess && freeProcess.binding && freeProcess.binding('util');
    } catch (e) {}
  }());

  /* Node.js helper references. */
  var nodeIsArrayBuffer = nodeUtil && nodeUtil.isArrayBuffer,
      nodeIsDate = nodeUtil && nodeUtil.isDate,
      nodeIsMap = nodeUtil && nodeUtil.isMap,
      nodeIsRegExp = nodeUtil && nodeUtil.isRegExp,
      nodeIsSet = nodeUtil && nodeUtil.isSet,
      nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;

  /*--------------------------------------------------------------------------*/

  /**
   * A faster alternative to `Function#apply`, this function invokes `func`
   * with the `this` binding of `thisArg` and the arguments of `args`.
   *
   * @private
   * @param {Function} func The function to invoke.
   * @param {*} thisArg The `this` binding of `func`.
   * @param {Array} args The arguments to invoke `func` with.
   * @returns {*} Returns the result of `func`.
   */
  function apply(func, thisArg, args) {
    switch (args.length) {
      case 0: return func.call(thisArg);
      case 1: return func.call(thisArg, args[0]);
      case 2: return func.call(thisArg, args[0], args[1]);
      case 3: return func.call(thisArg, args[0], args[1], args[2]);
    }
    return func.apply(thisArg, args);
  }

  /**
   * A specialized version of `baseAggregator` for arrays.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} setter The function to set `accumulator` values.
   * @param {Function} iteratee The iteratee to transform keys.
   * @param {Object} accumulator The initial aggregated object.
   * @returns {Function} Returns `accumulator`.
   */
  function arrayAggregator(array, setter, iteratee, accumulator) {
    var index = -1,
        length = array == null ? 0 : array.length;

    while (++index < length) {
      var value = array[index];
      setter(accumulator, value, iteratee(value), array);
    }
    return accumulator;
  }

  /**
   * A specialized version of `_.forEach` for arrays without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @returns {Array} Returns `array`.
   */
  function arrayEach(array, iteratee) {
    var index = -1,
        length = array == null ? 0 : array.length;

    while (++index < length) {
      if (iteratee(array[index], index, array) === false) {
        break;
      }
    }
    return array;
  }

  /**
   * A specialized version of `_.forEachRight` for arrays without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @returns {Array} Returns `array`.
   */
  function arrayEachRight(array, iteratee) {
    var length = array == null ? 0 : array.length;

    while (length--) {
      if (iteratee(array[length], length, array) === false) {
        break;
      }
    }
    return array;
  }

  /**
   * A specialized version of `_.every` for arrays without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} predicate The function invoked per iteration.
   * @returns {boolean} Returns `true` if all elements pass the predicate check,
   *  else `false`.
   */
  function arrayEvery(array, predicate) {
    var index = -1,
        length = array == null ? 0 : array.length;

    while (++index < length) {
      if (!predicate(array[index], index, array)) {
        return false;
      }
    }
    return true;
  }

  /**
   * A specialized version of `_.filter` for arrays without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} predicate The function invoked per iteration.
   * @returns {Array} Returns the new filtered array.
   */
  function arrayFilter(array, predicate) {
    var index = -1,
        length = array == null ? 0 : array.length,
        resIndex = 0,
        result = [];

    while (++index < length) {
      var value = array[index];
      if (predicate(value, index, array)) {
        result[resIndex++] = value;
      }
    }
    return result;
  }

  /**
   * A specialized version of `_.includes` for arrays without support for
   * specifying an index to search from.
   *
   * @private
   * @param {Array} [array] The array to inspect.
   * @param {*} target The value to search for.
   * @returns {boolean} Returns `true` if `target` is found, else `false`.
   */
  function arrayIncludes(array, value) {
    var length = array == null ? 0 : array.length;
    return !!length && baseIndexOf(array, value, 0) > -1;
  }

  /**
   * This function is like `arrayIncludes` except that it accepts a comparator.
   *
   * @private
   * @param {Array} [array] The array to inspect.
   * @param {*} target The value to search for.
   * @param {Function} comparator The comparator invoked per element.
   * @returns {boolean} Returns `true` if `target` is found, else `false`.
   */
  function arrayIncludesWith(array, value, comparator) {
    var index = -1,
        length = array == null ? 0 : array.length;

    while (++index < length) {
      if (comparator(value, array[index])) {
        return true;
      }
    }
    return false;
  }

  /**
   * A specialized version of `_.map` for arrays without support for iteratee
   * shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @returns {Array} Returns the new mapped array.
   */
  function arrayMap(array, iteratee) {
    var index = -1,
        length = array == null ? 0 : array.length,
        result = Array(length);

    while (++index < length) {
      result[index] = iteratee(array[index], index, array);
    }
    return result;
  }

  /**
   * Appends the elements of `values` to `array`.
   *
   * @private
   * @param {Array} array The array to modify.
   * @param {Array} values The values to append.
   * @returns {Array} Returns `array`.
   */
  function arrayPush(array, values) {
    var index = -1,
        length = values.length,
        offset = array.length;

    while (++index < length) {
      array[offset + index] = values[index];
    }
    return array;
  }

  /**
   * A specialized version of `_.reduce` for arrays without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @param {*} [accumulator] The initial value.
   * @param {boolean} [initAccum] Specify using the first element of `array` as
   *  the initial value.
   * @returns {*} Returns the accumulated value.
   */
  function arrayReduce(array, iteratee, accumulator, initAccum) {
    var index = -1,
        length = array == null ? 0 : array.length;

    if (initAccum && length) {
      accumulator = array[++index];
    }
    while (++index < length) {
      accumulator = iteratee(accumulator, array[index], index, array);
    }
    return accumulator;
  }

  /**
   * A specialized version of `_.reduceRight` for arrays without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @param {*} [accumulator] The initial value.
   * @param {boolean} [initAccum] Specify using the last element of `array` as
   *  the initial value.
   * @returns {*} Returns the accumulated value.
   */
  function arrayReduceRight(array, iteratee, accumulator, initAccum) {
    var length = array == null ? 0 : array.length;
    if (initAccum && length) {
      accumulator = array[--length];
    }
    while (length--) {
      accumulator = iteratee(accumulator, array[length], length, array);
    }
    return accumulator;
  }

  /**
   * A specialized version of `_.some` for arrays without support for iteratee
   * shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} predicate The function invoked per iteration.
   * @returns {boolean} Returns `true` if any element passes the predicate check,
   *  else `false`.
   */
  function arraySome(array, predicate) {
    var index = -1,
        length = array == null ? 0 : array.length;

    while (++index < length) {
      if (predicate(array[index], index, array)) {
        return true;
      }
    }
    return false;
  }

  /**
   * Gets the size of an ASCII `string`.
   *
   * @private
   * @param {string} string The string inspect.
   * @returns {number} Returns the string size.
   */
  var asciiSize = baseProperty('length');

  /**
   * Converts an ASCII `string` to an array.
   *
   * @private
   * @param {string} string The string to convert.
   * @returns {Array} Returns the converted array.
   */
  function asciiToArray(string) {
    return string.split('');
  }

  /**
   * Splits an ASCII `string` into an array of its words.
   *
   * @private
   * @param {string} The string to inspect.
   * @returns {Array} Returns the words of `string`.
   */
  function asciiWords(string) {
    return string.match(reAsciiWord) || [];
  }

  /**
   * The base implementation of methods like `_.findKey` and `_.findLastKey`,
   * without support for iteratee shorthands, which iterates over `collection`
   * using `eachFunc`.
   *
   * @private
   * @param {Array|Object} collection The collection to inspect.
   * @param {Function} predicate The function invoked per iteration.
   * @param {Function} eachFunc The function to iterate over `collection`.
   * @returns {*} Returns the found element or its key, else `undefined`.
   */
  function baseFindKey(collection, predicate, eachFunc) {
    var result;
    eachFunc(collection, function(value, key, collection) {
      if (predicate(value, key, collection)) {
        result = key;
        return false;
      }
    });
    return result;
  }

  /**
   * The base implementation of `_.findIndex` and `_.findLastIndex` without
   * support for iteratee shorthands.
   *
   * @private
   * @param {Array} array The array to inspect.
   * @param {Function} predicate The function invoked per iteration.
   * @param {number} fromIndex The index to search from.
   * @param {boolean} [fromRight] Specify iterating from right to left.
   * @returns {number} Returns the index of the matched value, else `-1`.
   */
  function baseFindIndex(array, predicate, fromIndex, fromRight) {
    var length = array.length,
        index = fromIndex + (fromRight ? 1 : -1);

    while ((fromRight ? index-- : ++index < length)) {
      if (predicate(array[index], index, array)) {
        return index;
      }
    }
    return -1;
  }

  /**
   * The base implementation of `_.indexOf` without `fromIndex` bounds checks.
   *
   * @private
   * @param {Array} array The array to inspect.
   * @param {*} value The value to search for.
   * @param {number} fromIndex The index to search from.
   * @returns {number} Returns the index of the matched value, else `-1`.
   */
  function baseIndexOf(array, value, fromIndex) {
    return value === value
      ? strictIndexOf(array, value, fromIndex)
      : baseFindIndex(array, baseIsNaN, fromIndex);
  }

  /**
   * This function is like `baseIndexOf` except that it accepts a comparator.
   *
   * @private
   * @param {Array} array The array to inspect.
   * @param {*} value The value to search for.
   * @param {number} fromIndex The index to search from.
   * @param {Function} comparator The comparator invoked per element.
   * @returns {number} Returns the index of the matched value, else `-1`.
   */
  function baseIndexOfWith(array, value, fromIndex, comparator) {
    var index = fromIndex - 1,
        length = array.length;

    while (++index < length) {
      if (comparator(array[index], value)) {
        return index;
      }
    }
    return -1;
  }

  /**
   * The base implementation of `_.isNaN` without support for number objects.
   *
   * @private
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.
   */
  function baseIsNaN(value) {
    return value !== value;
  }

  /**
   * The base implementation of `_.mean` and `_.meanBy` without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} array The array to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @returns {number} Returns the mean.
   */
  function baseMean(array, iteratee) {
    var length = array == null ? 0 : array.length;
    return length ? (baseSum(array, iteratee) / length) : NAN;
  }

  /**
   * The base implementation of `_.property` without support for deep paths.
   *
   * @private
   * @param {string} key The key of the property to get.
   * @returns {Function} Returns the new accessor function.
   */
  function baseProperty(key) {
    return function(object) {
      return object == null ? undefined : object[key];
    };
  }

  /**
   * The base implementation of `_.propertyOf` without support for deep paths.
   *
   * @private
   * @param {Object} object The object to query.
   * @returns {Function} Returns the new accessor function.
   */
  function basePropertyOf(object) {
    return function(key) {
      return object == null ? undefined : object[key];
    };
  }

  /**
   * The base implementation of `_.reduce` and `_.reduceRight`, without support
   * for iteratee shorthands, which iterates over `collection` using `eachFunc`.
   *
   * @private
   * @param {Array|Object} collection The collection to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @param {*} accumulator The initial value.
   * @param {boolean} initAccum Specify using the first or last element of
   *  `collection` as the initial value.
   * @param {Function} eachFunc The function to iterate over `collection`.
   * @returns {*} Returns the accumulated value.
   */
  function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) {
    eachFunc(collection, function(value, index, collection) {
      accumulator = initAccum
        ? (initAccum = false, value)
        : iteratee(accumulator, value, index, collection);
    });
    return accumulator;
  }

  /**
   * The base implementation of `_.sortBy` which uses `comparer` to define the
   * sort order of `array` and replaces criteria objects with their corresponding
   * values.
   *
   * @private
   * @param {Array} array The array to sort.
   * @param {Function} comparer The function to define sort order.
   * @returns {Array} Returns `array`.
   */
  function baseSortBy(array, comparer) {
    var length = array.length;

    array.sort(comparer);
    while (length--) {
      array[length] = array[length].value;
    }
    return array;
  }

  /**
   * The base implementation of `_.sum` and `_.sumBy` without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} array The array to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @returns {number} Returns the sum.
   */
  function baseSum(array, iteratee) {
    var result,
        index = -1,
        length = array.length;

    while (++index < length) {
      var current = iteratee(array[index]);
      if (current !== undefined) {
        result = result === undefined ? current : (result + current);
      }
    }
    return result;
  }

  /**
   * The base implementation of `_.times` without support for iteratee shorthands
   * or max array length checks.
   *
   * @private
   * @param {number} n The number of times to invoke `iteratee`.
   * @param {Function} iteratee The function invoked per iteration.
   * @returns {Array} Returns the array of results.
   */
  function baseTimes(n, iteratee) {
    var index = -1,
        result = Array(n);

    while (++index < n) {
      result[index] = iteratee(index);
    }
    return result;
  }

  /**
   * The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array
   * of key-value pairs for `object` corresponding to the property names of `props`.
   *
   * @private
   * @param {Object} object The object to query.
   * @param {Array} props The property names to get values for.
   * @returns {Object} Returns the key-value pairs.
   */
  function baseToPairs(object, props) {
    return arrayMap(props, function(key) {
      return [key, object[key]];
    });
  }

  /**
   * The base implementation of `_.unary` without support for storing metadata.
   *
   * @private
   * @param {Function} func The function to cap arguments for.
   * @returns {Function} Returns the new capped function.
   */
  function baseUnary(func) {
    return function(value) {
      return func(value);
    };
  }

  /**
   * The base implementation of `_.values` and `_.valuesIn` which creates an
   * array of `object` property values corresponding to the property names
   * of `props`.
   *
   * @private
   * @param {Object} object The object to query.
   * @param {Array} props The property names to get values for.
   * @returns {Object} Returns the array of property values.
   */
  function baseValues(object, props) {
    return arrayMap(props, function(key) {
      return object[key];
    });
  }

  /**
   * Checks if a `cache` value for `key` exists.
   *
   * @private
   * @param {Object} cache The cache to query.
   * @param {string} key The key of the entry to check.
   * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
   */
  function cacheHas(cache, key) {
    return cache.has(key);
  }

  /**
   * Used by `_.trim` and `_.trimStart` to get the index of the first string symbol
   * that is not found in the character symbols.
   *
   * @private
   * @param {Array} strSymbols The string symbols to inspect.
   * @param {Array} chrSymbols The character symbols to find.
   * @returns {number} Returns the index of the first unmatched string symbol.
   */
  function charsStartIndex(strSymbols, chrSymbols) {
    var index = -1,
        length = strSymbols.length;

    while (++index < length && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}
    return index;
  }

  /**
   * Used by `_.trim` and `_.trimEnd` to get the index of the last string symbol
   * that is not found in the character symbols.
   *
   * @private
   * @param {Array} strSymbols The string symbols to inspect.
   * @param {Array} chrSymbols The character symbols to find.
   * @returns {number} Returns the index of the last unmatched string symbol.
   */
  function charsEndIndex(strSymbols, chrSymbols) {
    var index = strSymbols.length;

    while (index-- && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}
    return index;
  }

  /**
   * Gets the number of `placeholder` occurrences in `array`.
   *
   * @private
   * @param {Array} array The array to inspect.
   * @param {*} placeholder The placeholder to search for.
   * @returns {number} Returns the placeholder count.
   */
  function countHolders(array, placeholder) {
    var length = array.length,
        result = 0;

    while (length--) {
      if (array[length] === placeholder) {
        ++result;
      }
    }
    return result;
  }

  /**
   * Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A
   * letters to basic Latin letters.
   *
   * @private
   * @param {string} letter The matched letter to deburr.
   * @returns {string} Returns the deburred letter.
   */
  var deburrLetter = basePropertyOf(deburredLetters);

  /**
   * Used by `_.escape` to convert characters to HTML entities.
   *
   * @private
   * @param {string} chr The matched character to escape.
   * @returns {string} Returns the escaped character.
   */
  var escapeHtmlChar = basePropertyOf(htmlEscapes);

  /**
   * Used by `_.template` to escape characters for inclusion in compiled string literals.
   *
   * @private
   * @param {string} chr The matched character to escape.
   * @returns {string} Returns the escaped character.
   */
  function escapeStringChar(chr) {
    return '\\' + stringEscapes[chr];
  }

  /**
   * Gets the value at `key` of `object`.
   *
   * @private
   * @param {Object} [object] The object to query.
   * @param {string} key The key of the property to get.
   * @returns {*} Returns the property value.
   */
  function getValue(object, key) {
    return object == null ? undefined : object[key];
  }

  /**
   * Checks if `string` contains Unicode symbols.
   *
   * @private
   * @param {string} string The string to inspect.
   * @returns {boolean} Returns `true` if a symbol is found, else `false`.
   */
  function hasUnicode(string) {
    return reHasUnicode.test(string);
  }

  /**
   * Checks if `string` contains a word composed of Unicode symbols.
   *
   * @private
   * @param {string} string The string to inspect.
   * @returns {boolean} Returns `true` if a word is found, else `false`.
   */
  function hasUnicodeWord(string) {
    return reHasUnicodeWord.test(string);
  }

  /**
   * Converts `iterator` to an array.
   *
   * @private
   * @param {Object} iterator The iterator to convert.
   * @returns {Array} Returns the converted array.
   */
  function iteratorToArray(iterator) {
    var data,
        result = [];

    while (!(data = iterator.next()).done) {
      result.push(data.value);
    }
    return result;
  }

  /**
   * Converts `map` to its key-value pairs.
   *
   * @private
   * @param {Object} map The map to convert.
   * @returns {Array} Returns the key-value pairs.
   */
  function mapToArray(map) {
    var index = -1,
        result = Array(map.size);

    map.forEach(function(value, key) {
      result[++index] = [key, value];
    });
    return result;
  }

  /**
   * Creates a unary function that invokes `func` with its argument transformed.
   *
   * @private
   * @param {Function} func The function to wrap.
   * @param {Function} transform The argument transform.
   * @returns {Function} Returns the new function.
   */
  function overArg(func, transform) {
    return function(arg) {
      return func(transform(arg));
    };
  }

  /**
   * Replaces all `placeholder` elements in `array` with an internal placeholder
   * and returns an array of their indexes.
   *
   * @private
   * @param {Array} array The array to modify.
   * @param {*} placeholder The placeholder to replace.
   * @returns {Array} Returns the new array of placeholder indexes.
   */
  function replaceHolders(array, placeholder) {
    var index = -1,
        length = array.length,
        resIndex = 0,
        result = [];

    while (++index < length) {
      var value = array[index];
      if (value === placeholder || value === PLACEHOLDER) {
        array[index] = PLACEHOLDER;
        result[resIndex++] = index;
      }
    }
    return result;
  }

  /**
   * Converts `set` to an array of its values.
   *
   * @private
   * @param {Object} set The set to convert.
   * @returns {Array} Returns the values.
   */
  function setToArray(set) {
    var index = -1,
        result = Array(set.size);

    set.forEach(function(value) {
      result[++index] = value;
    });
    return result;
  }

  /**
   * Converts `set` to its value-value pairs.
   *
   * @private
   * @param {Object} set The set to convert.
   * @returns {Array} Returns the value-value pairs.
   */
  function setToPairs(set) {
    var index = -1,
        result = Array(set.size);

    set.forEach(function(value) {
      result[++index] = [value, value];
    });
    return result;
  }

  /**
   * A specialized version of `_.indexOf` which performs strict equality
   * comparisons of values, i.e. `===`.
   *
   * @private
   * @param {Array} array The array to inspect.
   * @param {*} value The value to search for.
   * @param {number} fromIndex The index to search from.
   * @returns {number} Returns the index of the matched value, else `-1`.
   */
  function strictIndexOf(array, value, fromIndex) {
    var index = fromIndex - 1,
        length = array.length;

    while (++index < length) {
      if (array[index] === value) {
        return index;
      }
    }
    return -1;
  }

  /**
   * A specialized version of `_.lastIndexOf` which performs strict equality
   * comparisons of values, i.e. `===`.
   *
   * @private
   * @param {Array} array The array to inspect.
   * @param {*} value The value to search for.
   * @param {number} fromIndex The index to search from.
   * @returns {number} Returns the index of the matched value, else `-1`.
   */
  function strictLastIndexOf(array, value, fromIndex) {
    var index = fromIndex + 1;
    while (index--) {
      if (array[index] === value) {
        return index;
      }
    }
    return index;
  }

  /**
   * Gets the number of symbols in `string`.
   *
   * @private
   * @param {string} string The string to inspect.
   * @returns {number} Returns the string size.
   */
  function stringSize(string) {
    return hasUnicode(string)
      ? unicodeSize(string)
      : asciiSize(string);
  }

  /**
   * Converts `string` to an array.
   *
   * @private
   * @param {string} string The string to convert.
   * @returns {Array} Returns the converted array.
   */
  function stringToArray(string) {
    return hasUnicode(string)
      ? unicodeToArray(string)
      : asciiToArray(string);
  }

  /**
   * Used by `_.unescape` to convert HTML entities to characters.
   *
   * @private
   * @param {string} chr The matched character to unescape.
   * @returns {string} Returns the unescaped character.
   */
  var unescapeHtmlChar = basePropertyOf(htmlUnescapes);

  /**
   * Gets the size of a Unicode `string`.
   *
   * @private
   * @param {string} string The string inspect.
   * @returns {number} Returns the string size.
   */
  function unicodeSize(string) {
    var result = reUnicode.lastIndex = 0;
    while (reUnicode.test(string)) {
      ++result;
    }
    return result;
  }

  /**
   * Converts a Unicode `string` to an array.
   *
   * @private
   * @param {string} string The string to convert.
   * @returns {Array} Returns the converted array.
   */
  function unicodeToArray(string) {
    return string.match(reUnicode) || [];
  }

  /**
   * Splits a Unicode `string` into an array of its words.
   *
   * @private
   * @param {string} The string to inspect.
   * @returns {Array} Returns the words of `string`.
   */
  function unicodeWords(string) {
    return string.match(reUnicodeWord) || [];
  }

  /*--------------------------------------------------------------------------*/

  /**
   * Create a new pristine `lodash` function using the `context` object.
   *
   * @static
   * @memberOf _
   * @since 1.1.0
   * @category Util
   * @param {Object} [context=root] The context object.
   * @returns {Function} Returns a new `lodash` function.
   * @example
   *
   * _.mixin({ 'foo': _.constant('foo') });
   *
   * var lodash = _.runInContext();
   * lodash.mixin({ 'bar': lodash.constant('bar') });
   *
   * _.isFunction(_.foo);
   * // => true
   * _.isFunction(_.bar);
   * // => false
   *
   * lodash.isFunction(lodash.foo);
   * // => false
   * lodash.isFunction(lodash.bar);
   * // => true
   *
   * // Create a suped-up `defer` in Node.js.
   * var defer = _.runInContext({ 'setTimeout': setImmediate }).defer;
   */
  var runInContext = (function runInContext(context) {
    context = context == null ? root : _.defaults(root.Object(), context, _.pick(root, contextProps));

    /** Built-in constructor references. */
    var Array = context.Array,
        Date = context.Date,
        Error = context.Error,
        Function = context.Function,
        Math = context.Math,
        Object = context.Object,
        RegExp = context.RegExp,
        String = context.String,
        TypeError = context.TypeError;

    /** Used for built-in method references. */
    var arrayProto = Array.prototype,
        funcProto = Function.prototype,
        objectProto = Object.prototype;

    /** Used to detect overreaching core-js shims. */
    var coreJsData = context['__core-js_shared__'];

    /** Used to resolve the decompiled source of functions. */
    var funcToString = funcProto.toString;

    /** Used to check objects for own properties. */
    var hasOwnProperty = objectProto.hasOwnProperty;

    /** Used to generate unique IDs. */
    var idCounter = 0;

    /** Used to detect methods masquerading as native. */
    var maskSrcKey = (function() {
      var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');
      return uid ? ('Symbol(src)_1.' + uid) : '';
    }());

    /**
     * Used to resolve the
     * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
     * of values.
     */
    var nativeObjectToString = objectProto.toString;

    /** Used to infer the `Object` constructor. */
    var objectCtorString = funcToString.call(Object);

    /** Used to restore the original `_` reference in `_.noConflict`. */
    var oldDash = root._;

    /** Used to detect if a method is native. */
    var reIsNative = RegExp('^' +
      funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\$&')
      .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$'
    );

    /** Built-in value references. */
    var Buffer = moduleExports ? context.Buffer : undefined,
        Symbol = context.Symbol,
        Uint8Array = context.Uint8Array,
        allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined,
        getPrototype = overArg(Object.getPrototypeOf, Object),
        objectCreate = Object.create,
        propertyIsEnumerable = objectProto.propertyIsEnumerable,
        splice = arrayProto.splice,
        spreadableSymbol = Symbol ? Symbol.isConcatSpreadable : undefined,
        symIterator = Symbol ? Symbol.iterator : undefined,
        symToStringTag = Symbol ? Symbol.toStringTag : undefined;

    var defineProperty = (function() {
      try {
        var func = getNative(Object, 'defineProperty');
        func({}, '', {});
        return func;
      } catch (e) {}
    }());

    /** Mocked built-ins. */
    var ctxClearTimeout = context.clearTimeout !== root.clearTimeout && context.clearTimeout,
        ctxNow = Date && Date.now !== root.Date.now && Date.now,
        ctxSetTimeout = context.setTimeout !== root.setTimeout && context.setTimeout;

    /* Built-in method references for those with the same name as other `lodash` methods. */
    var nativeCeil = Math.ceil,
        nativeFloor = Math.floor,
        nativeGetSymbols = Object.getOwnPropertySymbols,
        nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined,
        nativeIsFinite = context.isFinite,
        nativeJoin = arrayProto.join,
        nativeKeys = overArg(Object.keys, Object),
        nativeMax = Math.max,
        nativeMin = Math.min,
        nativeNow = Date.now,
        nativeParseInt = context.parseInt,
        nativeRandom = Math.random,
        nativeReverse = arrayProto.reverse;

    /* Built-in method references that are verified to be native. */
    var DataView = getNative(context, 'DataView'),
        Map = getNative(context, 'Map'),
        Promise = getNative(context, 'Promise'),
        Set = getNative(context, 'Set'),
        WeakMap = getNative(context, 'WeakMap'),
        nativeCreate = getNative(Object, 'create');

    /** Used to store function metadata. */
    var metaMap = WeakMap && new WeakMap;

    /** Used to lookup unminified function names. */
    var realNames = {};

    /** Used to detect maps, sets, and weakmaps. */
    var dataViewCtorString = toSource(DataView),
        mapCtorString = toSource(Map),
        promiseCtorString = toSource(Promise),
        setCtorString = toSource(Set),
        weakMapCtorString = toSource(WeakMap);

    /** Used to convert symbols to primitives and strings. */
    var symbolProto = Symbol ? Symbol.prototype : undefined,
        symbolValueOf = symbolProto ? symbolProto.valueOf : undefined,
        symbolToString = symbolProto ? symbolProto.toString : undefined;

    /*------------------------------------------------------------------------*/

    /**
     * Creates a `lodash` object which wraps `value` to enable implicit method
     * chain sequences. Methods that operate on and return arrays, collections,
     * and functions can be chained together. Methods that retrieve a single value
     * or may return a primitive value will automatically end the chain sequence
     * and return the unwrapped value. Otherwise, the value must be unwrapped
     * with `_#value`.
     *
     * Explicit chain sequences, which must be unwrapped with `_#value`, may be
     * enabled using `_.chain`.
     *
     * The execution of chained methods is lazy, that is, it's deferred until
     * `_#value` is implicitly or explicitly called.
     *
     * Lazy evaluation allows several methods to support shortcut fusion.
     * Shortcut fusion is an optimization to merge iteratee calls; this avoids
     * the creation of intermediate arrays and can greatly reduce the number of
     * iteratee executions. Sections of a chain sequence qualify for shortcut
     * fusion if the section is applied to an array and iteratees accept only
     * one argument. The heuristic for whether a section qualifies for shortcut
     * fusion is subject to change.
     *
     * Chaining is supported in custom builds as long as the `_#value` method is
     * directly or indirectly included in the build.
     *
     * In addition to lodash methods, wrappers have `Array` and `String` methods.
     *
     * The wrapper `Array` methods are:
     * `concat`, `join`, `pop`, `push`, `shift`, `sort`, `splice`, and `unshift`
     *
     * The wrapper `String` methods are:
     * `replace` and `split`
     *
     * The wrapper methods that support shortcut fusion are:
     * `at`, `compact`, `drop`, `dropRight`, `dropWhile`, `filter`, `find`,
     * `findLast`, `head`, `initial`, `last`, `map`, `reject`, `reverse`, `slice`,
     * `tail`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, and `toArray`
     *
     * The chainable wrapper methods are:
     * `after`, `ary`, `assign`, `assignIn`, `assignInWith`, `assignWith`, `at`,
     * `before`, `bind`, `bindAll`, `bindKey`, `castArray`, `chain`, `chunk`,
     * `commit`, `compact`, `concat`, `conforms`, `constant`, `countBy`, `create`,
     * `curry`, `debounce`, `defaults`, `defaultsDeep`, `defer`, `delay`,
     * `difference`, `differenceBy`, `differenceWith`, `drop`, `dropRight`,
     * `dropRightWhile`, `dropWhile`, `extend`, `extendWith`, `fill`, `filter`,
     * `flatMap`, `flatMapDeep`, `flatMapDepth`, `flatten`, `flattenDeep`,
     * `flattenDepth`, `flip`, `flow`, `flowRight`, `fromPairs`, `functions`,
     * `functionsIn`, `groupBy`, `initial`, `intersection`, `intersectionBy`,
     * `intersectionWith`, `invert`, `invertBy`, `invokeMap`, `iteratee`, `keyBy`,
     * `keys`, `keysIn`, `map`, `mapKeys`, `mapValues`, `matches`, `matchesProperty`,
     * `memoize`, `merge`, `mergeWith`, `method`, `methodOf`, `mixin`, `negate`,
     * `nthArg`, `omit`, `omitBy`, `once`, `orderBy`, `over`, `overArgs`,
     * `overEvery`, `overSome`, `partial`, `partialRight`, `partition`, `pick`,
     * `pickBy`, `plant`, `property`, `propertyOf`, `pull`, `pullAll`, `pullAllBy`,
     * `pullAllWith`, `pullAt`, `push`, `range`, `rangeRight`, `rearg`, `reject`,
     * `remove`, `rest`, `reverse`, `sampleSize`, `set`, `setWith`, `shuffle`,
     * `slice`, `sort`, `sortBy`, `splice`, `spread`, `tail`, `take`, `takeRight`,
     * `takeRightWhile`, `takeWhile`, `tap`, `throttle`, `thru`, `toArray`,
     * `toPairs`, `toPairsIn`, `toPath`, `toPlainObject`, `transform`, `unary`,
     * `union`, `unionBy`, `unionWith`, `uniq`, `uniqBy`, `uniqWith`, `unset`,
     * `unshift`, `unzip`, `unzipWith`, `update`, `updateWith`, `values`,
     * `valuesIn`, `without`, `wrap`, `xor`, `xorBy`, `xorWith`, `zip`,
     * `zipObject`, `zipObjectDeep`, and `zipWith`
     *
     * The wrapper methods that are **not** chainable by default are:
     * `add`, `attempt`, `camelCase`, `capitalize`, `ceil`, `clamp`, `clone`,
     * `cloneDeep`, `cloneDeepWith`, `cloneWith`, `conformsTo`, `deburr`,
     * `defaultTo`, `divide`, `each`, `eachRight`, `endsWith`, `eq`, `escape`,
     * `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`, `findLast`,
     * `findLastIndex`, `findLastKey`, `first`, `floor`, `forEach`, `forEachRight`,
     * `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `get`, `gt`, `gte`, `has`,
     * `hasIn`, `head`, `identity`, `includes`, `indexOf`, `inRange`, `invoke`,
     * `isArguments`, `isArray`, `isArrayBuffer`, `isArrayLike`, `isArrayLikeObject`,
     * `isBoolean`, `isBuffer`, `isDate`, `isElement`, `isEmpty`, `isEqual`,
     * `isEqualWith`, `isError`, `isFinite`, `isFunction`, `isInteger`, `isLength`,
     * `isMap`, `isMatch`, `isMatchWith`, `isNaN`, `isNative`, `isNil`, `isNull`,
     * `isNumber`, `isObject`, `isObjectLike`, `isPlainObject`, `isRegExp`,
     * `isSafeInteger`, `isSet`, `isString`, `isUndefined`, `isTypedArray`,
     * `isWeakMap`, `isWeakSet`, `join`, `kebabCase`, `last`, `lastIndexOf`,
     * `lowerCase`, `lowerFirst`, `lt`, `lte`, `max`, `maxBy`, `mean`, `meanBy`,
     * `min`, `minBy`, `multiply`, `noConflict`, `noop`, `now`, `nth`, `pad`,
     * `padEnd`, `padStart`, `parseInt`, `pop`, `random`, `reduce`, `reduceRight`,
     * `repeat`, `result`, `round`, `runInContext`, `sample`, `shift`, `size`,
     * `snakeCase`, `some`, `sortedIndex`, `sortedIndexBy`, `sortedLastIndex`,
     * `sortedLastIndexBy`, `startCase`, `startsWith`, `stubArray`, `stubFalse`,
     * `stubObject`, `stubString`, `stubTrue`, `subtract`, `sum`, `sumBy`,
     * `template`, `times`, `toFinite`, `toInteger`, `toJSON`, `toLength`,
     * `toLower`, `toNumber`, `toSafeInteger`, `toString`, `toUpper`, `trim`,
     * `trimEnd`, `trimStart`, `truncate`, `unescape`, `uniqueId`, `upperCase`,
     * `upperFirst`, `value`, and `words`
     *
     * @name _
     * @constructor
     * @category Seq
     * @param {*} value The value to wrap in a `lodash` instance.
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * function square(n) {
     *   return n * n;
     * }
     *
     * var wrapped = _([1, 2, 3]);
     *
     * // Returns an unwrapped value.
     * wrapped.reduce(_.add);
     * // => 6
     *
     * // Returns a wrapped value.
     * var squares = wrapped.map(square);
     *
     * _.isArray(squares);
     * // => false
     *
     * _.isArray(squares.value());
     * // => true
     */
    function lodash(value) {
      if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) {
        if (value instanceof LodashWrapper) {
          return value;
        }
        if (hasOwnProperty.call(value, '__wrapped__')) {
          return wrapperClone(value);
        }
      }
      return new LodashWrapper(value);
    }

    /**
     * The base implementation of `_.create` without support for assigning
     * properties to the created object.
     *
     * @private
     * @param {Object} proto The object to inherit from.
     * @returns {Object} Returns the new object.
     */
    var baseCreate = (function() {
      function object() {}
      return function(proto) {
        if (!isObject(proto)) {
          return {};
        }
        if (objectCreate) {
          return objectCreate(proto);
        }
        object.prototype = proto;
        var result = new object;
        object.prototype = undefined;
        return result;
      };
    }());

    /**
     * The function whose prototype chain sequence wrappers inherit from.
     *
     * @private
     */
    function baseLodash() {
      // No operation performed.
    }

    /**
     * The base constructor for creating `lodash` wrapper objects.
     *
     * @private
     * @param {*} value The value to wrap.
     * @param {boolean} [chainAll] Enable explicit method chain sequences.
     */
    function LodashWrapper(value, chainAll) {
      this.__wrapped__ = value;
      this.__actions__ = [];
      this.__chain__ = !!chainAll;
      this.__index__ = 0;
      this.__values__ = undefined;
    }

    /**
     * By default, the template delimiters used by lodash are like those in
     * embedded Ruby (ERB) as well as ES2015 template strings. Change the
     * following template settings to use alternative delimiters.
     *
     * @static
     * @memberOf _
     * @type {Object}
     */
    lodash.templateSettings = {

      /**
       * Used to detect `data` property values to be HTML-escaped.
       *
       * @memberOf _.templateSettings
       * @type {RegExp}
       */
      'escape': reEscape,

      /**
       * Used to detect code to be evaluated.
       *
       * @memberOf _.templateSettings
       * @type {RegExp}
       */
      'evaluate': reEvaluate,

      /**
       * Used to detect `data` property values to inject.
       *
       * @memberOf _.templateSettings
       * @type {RegExp}
       */
      'interpolate': reInterpolate,

      /**
       * Used to reference the data object in the template text.
       *
       * @memberOf _.templateSettings
       * @type {string}
       */
      'variable': '',

      /**
       * Used to import variables into the compiled template.
       *
       * @memberOf _.templateSettings
       * @type {Object}
       */
      'imports': {

        /**
         * A reference to the `lodash` function.
         *
         * @memberOf _.templateSettings.imports
         * @type {Function}
         */
        '_': lodash
      }
    };

    // Ensure wrappers are instances of `baseLodash`.
    lodash.prototype = baseLodash.prototype;
    lodash.prototype.constructor = lodash;

    LodashWrapper.prototype = baseCreate(baseLodash.prototype);
    LodashWrapper.prototype.constructor = LodashWrapper;

    /*------------------------------------------------------------------------*/

    /**
     * Creates a lazy wrapper object which wraps `value` to enable lazy evaluation.
     *
     * @private
     * @constructor
     * @param {*} value The value to wrap.
     */
    function LazyWrapper(value) {
      this.__wrapped__ = value;
      this.__actions__ = [];
      this.__dir__ = 1;
      this.__filtered__ = false;
      this.__iteratees__ = [];
      this.__takeCount__ = MAX_ARRAY_LENGTH;
      this.__views__ = [];
    }

    /**
     * Creates a clone of the lazy wrapper object.
     *
     * @private
     * @name clone
     * @memberOf LazyWrapper
     * @returns {Object} Returns the cloned `LazyWrapper` object.
     */
    function lazyClone() {
      var result = new LazyWrapper(this.__wrapped__);
      result.__actions__ = copyArray(this.__actions__);
      result.__dir__ = this.__dir__;
      result.__filtered__ = this.__filtered__;
      result.__iteratees__ = copyArray(this.__iteratees__);
      result.__takeCount__ = this.__takeCount__;
      result.__views__ = copyArray(this.__views__);
      return result;
    }

    /**
     * Reverses the direction of lazy iteration.
     *
     * @private
     * @name reverse
     * @memberOf LazyWrapper
     * @returns {Object} Returns the new reversed `LazyWrapper` object.
     */
    function lazyReverse() {
      if (this.__filtered__) {
        var result = new LazyWrapper(this);
        result.__dir__ = -1;
        result.__filtered__ = true;
      } else {
        result = this.clone();
        result.__dir__ *= -1;
      }
      return result;
    }

    /**
     * Extracts the unwrapped value from its lazy wrapper.
     *
     * @private
     * @name value
     * @memberOf LazyWrapper
     * @returns {*} Returns the unwrapped value.
     */
    function lazyValue() {
      var array = this.__wrapped__.value(),
          dir = this.__dir__,
          isArr = isArray(array),
          isRight = dir < 0,
          arrLength = isArr ? array.length : 0,
          view = getView(0, arrLength, this.__views__),
          start = view.start,
          end = view.end,
          length = end - start,
          index = isRight ? end : (start - 1),
          iteratees = this.__iteratees__,
          iterLength = iteratees.length,
          resIndex = 0,
          takeCount = nativeMin(length, this.__takeCount__);

      if (!isArr || (!isRight && arrLength == length && takeCount == length)) {
        return baseWrapperValue(array, this.__actions__);
      }
      var result = [];

      outer:
      while (length-- && resIndex < takeCount) {
        index += dir;

        var iterIndex = -1,
            value = array[index];

        while (++iterIndex < iterLength) {
          var data = iteratees[iterIndex],
              iteratee = data.iteratee,
              type = data.type,
              computed = iteratee(value);

          if (type == LAZY_MAP_FLAG) {
            value = computed;
          } else if (!computed) {
            if (type == LAZY_FILTER_FLAG) {
              continue outer;
            } else {
              break outer;
            }
          }
        }
        result[resIndex++] = value;
      }
      return result;
    }

    // Ensure `LazyWrapper` is an instance of `baseLodash`.
    LazyWrapper.prototype = baseCreate(baseLodash.prototype);
    LazyWrapper.prototype.constructor = LazyWrapper;

    /*------------------------------------------------------------------------*/

    /**
     * Creates a hash object.
     *
     * @private
     * @constructor
     * @param {Array} [entries] The key-value pairs to cache.
     */
    function Hash(entries) {
      var index = -1,
          length = entries == null ? 0 : entries.length;

      this.clear();
      while (++index < length) {
        var entry = entries[index];
        this.set(entry[0], entry[1]);
      }
    }

    /**
     * Removes all key-value entries from the hash.
     *
     * @private
     * @name clear
     * @memberOf Hash
     */
    function hashClear() {
      this.__data__ = nativeCreate ? nativeCreate(null) : {};
      this.size = 0;
    }

    /**
     * Removes `key` and its value from the hash.
     *
     * @private
     * @name delete
     * @memberOf Hash
     * @param {Object} hash The hash to modify.
     * @param {string} key The key of the value to remove.
     * @returns {boolean} Returns `true` if the entry was removed, else `false`.
     */
    function hashDelete(key) {
      var result = this.has(key) && delete this.__data__[key];
      this.size -= result ? 1 : 0;
      return result;
    }

    /**
     * Gets the hash value for `key`.
     *
     * @private
     * @name get
     * @memberOf Hash
     * @param {string} key The key of the value to get.
     * @returns {*} Returns the entry value.
     */
    function hashGet(key) {
      var data = this.__data__;
      if (nativeCreate) {
        var result = data[key];
        return result === HASH_UNDEFINED ? undefined : result;
      }
      return hasOwnProperty.call(data, key) ? data[key] : undefined;
    }

    /**
     * Checks if a hash value for `key` exists.
     *
     * @private
     * @name has
     * @memberOf Hash
     * @param {string} key The key of the entry to check.
     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
     */
    function hashHas(key) {
      var data = this.__data__;
      return nativeCreate ? (data[key] !== undefined) : hasOwnProperty.call(data, key);
    }

    /**
     * Sets the hash `key` to `value`.
     *
     * @private
     * @name set
     * @memberOf Hash
     * @param {string} key The key of the value to set.
     * @param {*} value The value to set.
     * @returns {Object} Returns the hash instance.
     */
    function hashSet(key, value) {
      var data = this.__data__;
      this.size += this.has(key) ? 0 : 1;
      data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;
      return this;
    }

    // Add methods to `Hash`.
    Hash.prototype.clear = hashClear;
    Hash.prototype['delete'] = hashDelete;
    Hash.prototype.get = hashGet;
    Hash.prototype.has = hashHas;
    Hash.prototype.set = hashSet;

    /*------------------------------------------------------------------------*/

    /**
     * Creates an list cache object.
     *
     * @private
     * @constructor
     * @param {Array} [entries] The key-value pairs to cache.
     */
    function ListCache(entries) {
      var index = -1,
          length = entries == null ? 0 : entries.length;

      this.clear();
      while (++index < length) {
        var entry = entries[index];
        this.set(entry[0], entry[1]);
      }
    }

    /**
     * Removes all key-value entries from the list cache.
     *
     * @private
     * @name clear
     * @memberOf ListCache
     */
    function listCacheClear() {
      this.__data__ = [];
      this.size = 0;
    }

    /**
     * Removes `key` and its value from the list cache.
     *
     * @private
     * @name delete
     * @memberOf ListCache
     * @param {string} key The key of the value to remove.
     * @returns {boolean} Returns `true` if the entry was removed, else `false`.
     */
    function listCacheDelete(key) {
      var data = this.__data__,
          index = assocIndexOf(data, key);

      if (index < 0) {
        return false;
      }
      var lastIndex = data.length - 1;
      if (index == lastIndex) {
        data.pop();
      } else {
        splice.call(data, index, 1);
      }
      --this.size;
      return true;
    }

    /**
     * Gets the list cache value for `key`.
     *
     * @private
     * @name get
     * @memberOf ListCache
     * @param {string} key The key of the value to get.
     * @returns {*} Returns the entry value.
     */
    function listCacheGet(key) {
      var data = this.__data__,
          index = assocIndexOf(data, key);

      return index < 0 ? undefined : data[index][1];
    }

    /**
     * Checks if a list cache value for `key` exists.
     *
     * @private
     * @name has
     * @memberOf ListCache
     * @param {string} key The key of the entry to check.
     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
     */
    function listCacheHas(key) {
      return assocIndexOf(this.__data__, key) > -1;
    }

    /**
     * Sets the list cache `key` to `value`.
     *
     * @private
     * @name set
     * @memberOf ListCache
     * @param {string} key The key of the value to set.
     * @param {*} value The value to set.
     * @returns {Object} Returns the list cache instance.
     */
    function listCacheSet(key, value) {
      var data = this.__data__,
          index = assocIndexOf(data, key);

      if (index < 0) {
        ++this.size;
        data.push([key, value]);
      } else {
        data[index][1] = value;
      }
      return this;
    }

    // Add methods to `ListCache`.
    ListCache.prototype.clear = listCacheClear;
    ListCache.prototype['delete'] = listCacheDelete;
    ListCache.prototype.get = listCacheGet;
    ListCache.prototype.has = listCacheHas;
    ListCache.prototype.set = listCacheSet;

    /*------------------------------------------------------------------------*/

    /**
     * Creates a map cache object to store key-value pairs.
     *
     * @private
     * @constructor
     * @param {Array} [entries] The key-value pairs to cache.
     */
    function MapCache(entries) {
      var index = -1,
          length = entries == null ? 0 : entries.length;

      this.clear();
      while (++index < length) {
        var entry = entries[index];
        this.set(entry[0], entry[1]);
      }
    }

    /**
     * Removes all key-value entries from the map.
     *
     * @private
     * @name clear
     * @memberOf MapCache
     */
    function mapCacheClear() {
      this.size = 0;
      this.__data__ = {
        'hash': new Hash,
        'map': new (Map || ListCache),
        'string': new Hash
      };
    }

    /**
     * Removes `key` and its value from the map.
     *
     * @private
     * @name delete
     * @memberOf MapCache
     * @param {string} key The key of the value to remove.
     * @returns {boolean} Returns `true` if the entry was removed, else `false`.
     */
    function mapCacheDelete(key) {
      var result = getMapData(this, key)['delete'](key);
      this.size -= result ? 1 : 0;
      return result;
    }

    /**
     * Gets the map value for `key`.
     *
     * @private
     * @name get
     * @memberOf MapCache
     * @param {string} key The key of the value to get.
     * @returns {*} Returns the entry value.
     */
    function mapCacheGet(key) {
      return getMapData(this, key).get(key);
    }

    /**
     * Checks if a map value for `key` exists.
     *
     * @private
     * @name has
     * @memberOf MapCache
     * @param {string} key The key of the entry to check.
     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
     */
    function mapCacheHas(key) {
      return getMapData(this, key).has(key);
    }

    /**
     * Sets the map `key` to `value`.
     *
     * @private
     * @name set
     * @memberOf MapCache
     * @param {string} key The key of the value to set.
     * @param {*} value The value to set.
     * @returns {Object} Returns the map cache instance.
     */
    function mapCacheSet(key, value) {
      var data = getMapData(this, key),
          size = data.size;

      data.set(key, value);
      this.size += data.size == size ? 0 : 1;
      return this;
    }

    // Add methods to `MapCache`.
    MapCache.prototype.clear = mapCacheClear;
    MapCache.prototype['delete'] = mapCacheDelete;
    MapCache.prototype.get = mapCacheGet;
    MapCache.prototype.has = mapCacheHas;
    MapCache.prototype.set = mapCacheSet;

    /*------------------------------------------------------------------------*/

    /**
     *
     * Creates an array cache object to store unique values.
     *
     * @private
     * @constructor
     * @param {Array} [values] The values to cache.
     */
    function SetCache(values) {
      var index = -1,
          length = values == null ? 0 : values.length;

      this.__data__ = new MapCache;
      while (++index < length) {
        this.add(values[index]);
      }
    }

    /**
     * Adds `value` to the array cache.
     *
     * @private
     * @name add
     * @memberOf SetCache
     * @alias push
     * @param {*} value The value to cache.
     * @returns {Object} Returns the cache instance.
     */
    function setCacheAdd(value) {
      this.__data__.set(value, HASH_UNDEFINED);
      return this;
    }

    /**
     * Checks if `value` is in the array cache.
     *
     * @private
     * @name has
     * @memberOf SetCache
     * @param {*} value The value to search for.
     * @returns {number} Returns `true` if `value` is found, else `false`.
     */
    function setCacheHas(value) {
      return this.__data__.has(value);
    }

    // Add methods to `SetCache`.
    SetCache.prototype.add = SetCache.prototype.push = setCacheAdd;
    SetCache.prototype.has = setCacheHas;

    /*------------------------------------------------------------------------*/

    /**
     * Creates a stack cache object to store key-value pairs.
     *
     * @private
     * @constructor
     * @param {Array} [entries] The key-value pairs to cache.
     */
    function Stack(entries) {
      var data = this.__data__ = new ListCache(entries);
      this.size = data.size;
    }

    /**
     * Removes all key-value entries from the stack.
     *
     * @private
     * @name clear
     * @memberOf Stack
     */
    function stackClear() {
      this.__data__ = new ListCache;
      this.size = 0;
    }

    /**
     * Removes `key` and its value from the stack.
     *
     * @private
     * @name delete
     * @memberOf Stack
     * @param {string} key The key of the value to remove.
     * @returns {boolean} Returns `true` if the entry was removed, else `false`.
     */
    function stackDelete(key) {
      var data = this.__data__,
          result = data['delete'](key);

      this.size = data.size;
      return result;
    }

    /**
     * Gets the stack value for `key`.
     *
     * @private
     * @name get
     * @memberOf Stack
     * @param {string} key The key of the value to get.
     * @returns {*} Returns the entry value.
     */
    function stackGet(key) {
      return this.__data__.get(key);
    }

    /**
     * Checks if a stack value for `key` exists.
     *
     * @private
     * @name has
     * @memberOf Stack
     * @param {string} key The key of the entry to check.
     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
     */
    function stackHas(key) {
      return this.__data__.has(key);
    }

    /**
     * Sets the stack `key` to `value`.
     *
     * @private
     * @name set
     * @memberOf Stack
     * @param {string} key The key of the value to set.
     * @param {*} value The value to set.
     * @returns {Object} Returns the stack cache instance.
     */
    function stackSet(key, value) {
      var data = this.__data__;
      if (data instanceof ListCache) {
        var pairs = data.__data__;
        if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {
          pairs.push([key, value]);
          this.size = ++data.size;
          return this;
        }
        data = this.__data__ = new MapCache(pairs);
      }
      data.set(key, value);
      this.size = data.size;
      return this;
    }

    // Add methods to `Stack`.
    Stack.prototype.clear = stackClear;
    Stack.prototype['delete'] = stackDelete;
    Stack.prototype.get = stackGet;
    Stack.prototype.has = stackHas;
    Stack.prototype.set = stackSet;

    /*------------------------------------------------------------------------*/

    /**
     * Creates an array of the enumerable property names of the array-like `value`.
     *
     * @private
     * @param {*} value The value to query.
     * @param {boolean} inherited Specify returning inherited property names.
     * @returns {Array} Returns the array of property names.
     */
    function arrayLikeKeys(value, inherited) {
      var isArr = isArray(value),
          isArg = !isArr && isArguments(value),
          isBuff = !isArr && !isArg && isBuffer(value),
          isType = !isArr && !isArg && !isBuff && isTypedArray(value),
          skipIndexes = isArr || isArg || isBuff || isType,
          result = skipIndexes ? baseTimes(value.length, String) : [],
          length = result.length;

      for (var key in value) {
        if ((inherited || hasOwnProperty.call(value, key)) &&
            !(skipIndexes && (
               // Safari 9 has enumerable `arguments.length` in strict mode.
               key == 'length' ||
               // Node.js 0.10 has enumerable non-index properties on buffers.
               (isBuff && (key == 'offset' || key == 'parent')) ||
               // PhantomJS 2 has enumerable non-index properties on typed arrays.
               (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) ||
               // Skip index properties.
               isIndex(key, length)
            ))) {
          result.push(key);
        }
      }
      return result;
    }

    /**
     * A specialized version of `_.sample` for arrays.
     *
     * @private
     * @param {Array} array The array to sample.
     * @returns {*} Returns the random element.
     */
    function arraySample(array) {
      var length = array.length;
      return length ? array[baseRandom(0, length - 1)] : undefined;
    }

    /**
     * A specialized version of `_.sampleSize` for arrays.
     *
     * @private
     * @param {Array} array The array to sample.
     * @param {number} n The number of elements to sample.
     * @returns {Array} Returns the random elements.
     */
    function arraySampleSize(array, n) {
      return shuffleSelf(copyArray(array), baseClamp(n, 0, array.length));
    }

    /**
     * A specialized version of `_.shuffle` for arrays.
     *
     * @private
     * @param {Array} array The array to shuffle.
     * @returns {Array} Returns the new shuffled array.
     */
    function arrayShuffle(array) {
      return shuffleSelf(copyArray(array));
    }

    /**
     * This function is like `assignValue` except that it doesn't assign
     * `undefined` values.
     *
     * @private
     * @param {Object} object The object to modify.
     * @param {string} key The key of the property to assign.
     * @param {*} value The value to assign.
     */
    function assignMergeValue(object, key, value) {
      if ((value !== undefined && !eq(object[key], value)) ||
          (value === undefined && !(key in object))) {
        baseAssignValue(object, key, value);
      }
    }

    /**
     * Assigns `value` to `key` of `object` if the existing value is not equivalent
     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons.
     *
     * @private
     * @param {Object} object The object to modify.
     * @param {string} key The key of the property to assign.
     * @param {*} value The value to assign.
     */
    function assignValue(object, key, value) {
      var objValue = object[key];
      if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||
          (value === undefined && !(key in object))) {
        baseAssignValue(object, key, value);
      }
    }

    /**
     * Gets the index at which the `key` is found in `array` of key-value pairs.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {*} key The key to search for.
     * @returns {number} Returns the index of the matched value, else `-1`.
     */
    function assocIndexOf(array, key) {
      var length = array.length;
      while (length--) {
        if (eq(array[length][0], key)) {
          return length;
        }
      }
      return -1;
    }

    /**
     * Aggregates elements of `collection` on `accumulator` with keys transformed
     * by `iteratee` and values set by `setter`.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} setter The function to set `accumulator` values.
     * @param {Function} iteratee The iteratee to transform keys.
     * @param {Object} accumulator The initial aggregated object.
     * @returns {Function} Returns `accumulator`.
     */
    function baseAggregator(collection, setter, iteratee, accumulator) {
      baseEach(collection, function(value, key, collection) {
        setter(accumulator, value, iteratee(value), collection);
      });
      return accumulator;
    }

    /**
     * The base implementation of `_.assign` without support for multiple sources
     * or `customizer` functions.
     *
     * @private
     * @param {Object} object The destination object.
     * @param {Object} source The source object.
     * @returns {Object} Returns `object`.
     */
    function baseAssign(object, source) {
      return object && copyObject(source, keys(source), object);
    }

    /**
     * The base implementation of `_.assignIn` without support for multiple sources
     * or `customizer` functions.
     *
     * @private
     * @param {Object} object The destination object.
     * @param {Object} source The source object.
     * @returns {Object} Returns `object`.
     */
    function baseAssignIn(object, source) {
      return object && copyObject(source, keysIn(source), object);
    }

    /**
     * The base implementation of `assignValue` and `assignMergeValue` without
     * value checks.
     *
     * @private
     * @param {Object} object The object to modify.
     * @param {string} key The key of the property to assign.
     * @param {*} value The value to assign.
     */
    function baseAssignValue(object, key, value) {
      if (key == '__proto__' && defineProperty) {
        defineProperty(object, key, {
          'configurable': true,
          'enumerable': true,
          'value': value,
          'writable': true
        });
      } else {
        object[key] = value;
      }
    }

    /**
     * The base implementation of `_.at` without support for individual paths.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {string[]} paths The property paths to pick.
     * @returns {Array} Returns the picked elements.
     */
    function baseAt(object, paths) {
      var index = -1,
          length = paths.length,
          result = Array(length),
          skip = object == null;

      while (++index < length) {
        result[index] = skip ? undefined : get(object, paths[index]);
      }
      return result;
    }

    /**
     * The base implementation of `_.clamp` which doesn't coerce arguments.
     *
     * @private
     * @param {number} number The number to clamp.
     * @param {number} [lower] The lower bound.
     * @param {number} upper The upper bound.
     * @returns {number} Returns the clamped number.
     */
    function baseClamp(number, lower, upper) {
      if (number === number) {
        if (upper !== undefined) {
          number = number <= upper ? number : upper;
        }
        if (lower !== undefined) {
          number = number >= lower ? number : lower;
        }
      }
      return number;
    }

    /**
     * The base implementation of `_.clone` and `_.cloneDeep` which tracks
     * traversed objects.
     *
     * @private
     * @param {*} value The value to clone.
     * @param {boolean} bitmask The bitmask flags.
     *  1 - Deep clone
     *  2 - Flatten inherited properties
     *  4 - Clone symbols
     * @param {Function} [customizer] The function to customize cloning.
     * @param {string} [key] The key of `value`.
     * @param {Object} [object] The parent object of `value`.
     * @param {Object} [stack] Tracks traversed objects and their clone counterparts.
     * @returns {*} Returns the cloned value.
     */
    function baseClone(value, bitmask, customizer, key, object, stack) {
      var result,
          isDeep = bitmask & CLONE_DEEP_FLAG,
          isFlat = bitmask & CLONE_FLAT_FLAG,
          isFull = bitmask & CLONE_SYMBOLS_FLAG;

      if (customizer) {
        result = object ? customizer(value, key, object, stack) : customizer(value);
      }
      if (result !== undefined) {
        return result;
      }
      if (!isObject(value)) {
        return value;
      }
      var isArr = isArray(value);
      if (isArr) {
        result = initCloneArray(value);
        if (!isDeep) {
          return copyArray(value, result);
        }
      } else {
        var tag = getTag(value),
            isFunc = tag == funcTag || tag == genTag;

        if (isBuffer(value)) {
          return cloneBuffer(value, isDeep);
        }
        if (tag == objectTag || tag == argsTag || (isFunc && !object)) {
          result = (isFlat || isFunc) ? {} : initCloneObject(value);
          if (!isDeep) {
            return isFlat
              ? copySymbolsIn(value, baseAssignIn(result, value))
              : copySymbols(value, baseAssign(result, value));
          }
        } else {
          if (!cloneableTags[tag]) {
            return object ? value : {};
          }
          result = initCloneByTag(value, tag, isDeep);
        }
      }
      // Check for circular references and return its corresponding clone.
      stack || (stack = new Stack);
      var stacked = stack.get(value);
      if (stacked) {
        return stacked;
      }
      stack.set(value, result);

      if (isSet(value)) {
        value.forEach(function(subValue) {
          result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack));
        });
      } else if (isMap(value)) {
        value.forEach(function(subValue, key) {
          result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack));
        });
      }

      var keysFunc = isFull
        ? (isFlat ? getAllKeysIn : getAllKeys)
        : (isFlat ? keysIn : keys);

      var props = isArr ? undefined : keysFunc(value);
      arrayEach(props || value, function(subValue, key) {
        if (props) {
          key = subValue;
          subValue = value[key];
        }
        // Recursively populate clone (susceptible to call stack limits).
        assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack));
      });
      return result;
    }

    /**
     * The base implementation of `_.conforms` which doesn't clone `source`.
     *
     * @private
     * @param {Object} source The object of property predicates to conform to.
     * @returns {Function} Returns the new spec function.
     */
    function baseConforms(source) {
      var props = keys(source);
      return function(object) {
        return baseConformsTo(object, source, props);
      };
    }

    /**
     * The base implementation of `_.conformsTo` which accepts `props` to check.
     *
     * @private
     * @param {Object} object The object to inspect.
     * @param {Object} source The object of property predicates to conform to.
     * @returns {boolean} Returns `true` if `object` conforms, else `false`.
     */
    function baseConformsTo(object, source, props) {
      var length = props.length;
      if (object == null) {
        return !length;
      }
      object = Object(object);
      while (length--) {
        var key = props[length],
            predicate = source[key],
            value = object[key];

        if ((value === undefined && !(key in object)) || !predicate(value)) {
          return false;
        }
      }
      return true;
    }

    /**
     * The base implementation of `_.delay` and `_.defer` which accepts `args`
     * to provide to `func`.
     *
     * @private
     * @param {Function} func The function to delay.
     * @param {number} wait The number of milliseconds to delay invocation.
     * @param {Array} args The arguments to provide to `func`.
     * @returns {number|Object} Returns the timer id or timeout object.
     */
    function baseDelay(func, wait, args) {
      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      return setTimeout(function() { func.apply(undefined, args); }, wait);
    }

    /**
     * The base implementation of methods like `_.difference` without support
     * for excluding multiple arrays or iteratee shorthands.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {Array} values The values to exclude.
     * @param {Function} [iteratee] The iteratee invoked per element.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new array of filtered values.
     */
    function baseDifference(array, values, iteratee, comparator) {
      var index = -1,
          includes = arrayIncludes,
          isCommon = true,
          length = array.length,
          result = [],
          valuesLength = values.length;

      if (!length) {
        return result;
      }
      if (iteratee) {
        values = arrayMap(values, baseUnary(iteratee));
      }
      if (comparator) {
        includes = arrayIncludesWith;
        isCommon = false;
      }
      else if (values.length >= LARGE_ARRAY_SIZE) {
        includes = cacheHas;
        isCommon = false;
        values = new SetCache(values);
      }
      outer:
      while (++index < length) {
        var value = array[index],
            computed = iteratee == null ? value : iteratee(value);

        value = (comparator || value !== 0) ? value : 0;
        if (isCommon && computed === computed) {
          var valuesIndex = valuesLength;
          while (valuesIndex--) {
            if (values[valuesIndex] === computed) {
              continue outer;
            }
          }
          result.push(value);
        }
        else if (!includes(values, computed, comparator)) {
          result.push(value);
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.forEach` without support for iteratee shorthands.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Array|Object} Returns `collection`.
     */
    var baseEach = createBaseEach(baseForOwn);

    /**
     * The base implementation of `_.forEachRight` without support for iteratee shorthands.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Array|Object} Returns `collection`.
     */
    var baseEachRight = createBaseEach(baseForOwnRight, true);

    /**
     * The base implementation of `_.every` without support for iteratee shorthands.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} predicate The function invoked per iteration.
     * @returns {boolean} Returns `true` if all elements pass the predicate check,
     *  else `false`
     */
    function baseEvery(collection, predicate) {
      var result = true;
      baseEach(collection, function(value, index, collection) {
        result = !!predicate(value, index, collection);
        return result;
      });
      return result;
    }

    /**
     * The base implementation of methods like `_.max` and `_.min` which accepts a
     * `comparator` to determine the extremum value.
     *
     * @private
     * @param {Array} array The array to iterate over.
     * @param {Function} iteratee The iteratee invoked per iteration.
     * @param {Function} comparator The comparator used to compare values.
     * @returns {*} Returns the extremum value.
     */
    function baseExtremum(array, iteratee, comparator) {
      var index = -1,
          length = array.length;

      while (++index < length) {
        var value = array[index],
            current = iteratee(value);

        if (current != null && (computed === undefined
              ? (current === current && !isSymbol(current))
              : comparator(current, computed)
            )) {
          var computed = current,
              result = value;
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.fill` without an iteratee call guard.
     *
     * @private
     * @param {Array} array The array to fill.
     * @param {*} value The value to fill `array` with.
     * @param {number} [start=0] The start position.
     * @param {number} [end=array.length] The end position.
     * @returns {Array} Returns `array`.
     */
    function baseFill(array, value, start, end) {
      var length = array.length;

      start = toInteger(start);
      if (start < 0) {
        start = -start > length ? 0 : (length + start);
      }
      end = (end === undefined || end > length) ? length : toInteger(end);
      if (end < 0) {
        end += length;
      }
      end = start > end ? 0 : toLength(end);
      while (start < end) {
        array[start++] = value;
      }
      return array;
    }

    /**
     * The base implementation of `_.filter` without support for iteratee shorthands.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} predicate The function invoked per iteration.
     * @returns {Array} Returns the new filtered array.
     */
    function baseFilter(collection, predicate) {
      var result = [];
      baseEach(collection, function(value, index, collection) {
        if (predicate(value, index, collection)) {
          result.push(value);
        }
      });
      return result;
    }

    /**
     * The base implementation of `_.flatten` with support for restricting flattening.
     *
     * @private
     * @param {Array} array The array to flatten.
     * @param {number} depth The maximum recursion depth.
     * @param {boolean} [predicate=isFlattenable] The function invoked per iteration.
     * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks.
     * @param {Array} [result=[]] The initial result value.
     * @returns {Array} Returns the new flattened array.
     */
    function baseFlatten(array, depth, predicate, isStrict, result) {
      var index = -1,
          length = array.length;

      predicate || (predicate = isFlattenable);
      result || (result = []);

      while (++index < length) {
        var value = array[index];
        if (depth > 0 && predicate(value)) {
          if (depth > 1) {
            // Recursively flatten arrays (susceptible to call stack limits).
            baseFlatten(value, depth - 1, predicate, isStrict, result);
          } else {
            arrayPush(result, value);
          }
        } else if (!isStrict) {
          result[result.length] = value;
        }
      }
      return result;
    }

    /**
     * The base implementation of `baseForOwn` which iterates over `object`
     * properties returned by `keysFunc` and invokes `iteratee` for each property.
     * Iteratee functions may exit iteration early by explicitly returning `false`.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @param {Function} keysFunc The function to get the keys of `object`.
     * @returns {Object} Returns `object`.
     */
    var baseFor = createBaseFor();

    /**
     * This function is like `baseFor` except that it iterates over properties
     * in the opposite order.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @param {Function} keysFunc The function to get the keys of `object`.
     * @returns {Object} Returns `object`.
     */
    var baseForRight = createBaseFor(true);

    /**
     * The base implementation of `_.forOwn` without support for iteratee shorthands.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Object} Returns `object`.
     */
    function baseForOwn(object, iteratee) {
      return object && baseFor(object, iteratee, keys);
    }

    /**
     * The base implementation of `_.forOwnRight` without support for iteratee shorthands.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Object} Returns `object`.
     */
    function baseForOwnRight(object, iteratee) {
      return object && baseForRight(object, iteratee, keys);
    }

    /**
     * The base implementation of `_.functions` which creates an array of
     * `object` function property names filtered from `props`.
     *
     * @private
     * @param {Object} object The object to inspect.
     * @param {Array} props The property names to filter.
     * @returns {Array} Returns the function names.
     */
    function baseFunctions(object, props) {
      return arrayFilter(props, function(key) {
        return isFunction(object[key]);
      });
    }

    /**
     * The base implementation of `_.get` without support for default values.
     *
     * @private
     * @param {Object} object The object to query.
     * @param {Array|string} path The path of the property to get.
     * @returns {*} Returns the resolved value.
     */
    function baseGet(object, path) {
      path = castPath(path, object);

      var index = 0,
          length = path.length;

      while (object != null && index < length) {
        object = object[toKey(path[index++])];
      }
      return (index && index == length) ? object : undefined;
    }

    /**
     * The base implementation of `getAllKeys` and `getAllKeysIn` which uses
     * `keysFunc` and `symbolsFunc` to get the enumerable property names and
     * symbols of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @param {Function} keysFunc The function to get the keys of `object`.
     * @param {Function} symbolsFunc The function to get the symbols of `object`.
     * @returns {Array} Returns the array of property names and symbols.
     */
    function baseGetAllKeys(object, keysFunc, symbolsFunc) {
      var result = keysFunc(object);
      return isArray(object) ? result : arrayPush(result, symbolsFunc(object));
    }

    /**
     * The base implementation of `getTag` without fallbacks for buggy environments.
     *
     * @private
     * @param {*} value The value to query.
     * @returns {string} Returns the `toStringTag`.
     */
    function baseGetTag(value) {
      if (value == null) {
        return value === undefined ? undefinedTag : nullTag;
      }
      return (symToStringTag && symToStringTag in Object(value))
        ? getRawTag(value)
        : objectToString(value);
    }

    /**
     * The base implementation of `_.gt` which doesn't coerce arguments.
     *
     * @private
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if `value` is greater than `other`,
     *  else `false`.
     */
    function baseGt(value, other) {
      return value > other;
    }

    /**
     * The base implementation of `_.has` without support for deep paths.
     *
     * @private
     * @param {Object} [object] The object to query.
     * @param {Array|string} key The key to check.
     * @returns {boolean} Returns `true` if `key` exists, else `false`.
     */
    function baseHas(object, key) {
      return object != null && hasOwnProperty.call(object, key);
    }

    /**
     * The base implementation of `_.hasIn` without support for deep paths.
     *
     * @private
     * @param {Object} [object] The object to query.
     * @param {Array|string} key The key to check.
     * @returns {boolean} Returns `true` if `key` exists, else `false`.
     */
    function baseHasIn(object, key) {
      return object != null && key in Object(object);
    }

    /**
     * The base implementation of `_.inRange` which doesn't coerce arguments.
     *
     * @private
     * @param {number} number The number to check.
     * @param {number} start The start of the range.
     * @param {number} end The end of the range.
     * @returns {boolean} Returns `true` if `number` is in the range, else `false`.
     */
    function baseInRange(number, start, end) {
      return number >= nativeMin(start, end) && number < nativeMax(start, end);
    }

    /**
     * The base implementation of methods like `_.intersection`, without support
     * for iteratee shorthands, that accepts an array of arrays to inspect.
     *
     * @private
     * @param {Array} arrays The arrays to inspect.
     * @param {Function} [iteratee] The iteratee invoked per element.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new array of shared values.
     */
    function baseIntersection(arrays, iteratee, comparator) {
      var includes = comparator ? arrayIncludesWith : arrayIncludes,
          length = arrays[0].length,
          othLength = arrays.length,
          othIndex = othLength,
          caches = Array(othLength),
          maxLength = Infinity,
          result = [];

      while (othIndex--) {
        var array = arrays[othIndex];
        if (othIndex && iteratee) {
          array = arrayMap(array, baseUnary(iteratee));
        }
        maxLength = nativeMin(array.length, maxLength);
        caches[othIndex] = !comparator && (iteratee || (length >= 120 && array.length >= 120))
          ? new SetCache(othIndex && array)
          : undefined;
      }
      array = arrays[0];

      var index = -1,
          seen = caches[0];

      outer:
      while (++index < length && result.length < maxLength) {
        var value = array[index],
            computed = iteratee ? iteratee(value) : value;

        value = (comparator || value !== 0) ? value : 0;
        if (!(seen
              ? cacheHas(seen, computed)
              : includes(result, computed, comparator)
            )) {
          othIndex = othLength;
          while (--othIndex) {
            var cache = caches[othIndex];
            if (!(cache
                  ? cacheHas(cache, computed)
                  : includes(arrays[othIndex], computed, comparator))
                ) {
              continue outer;
            }
          }
          if (seen) {
            seen.push(computed);
          }
          result.push(value);
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.invert` and `_.invertBy` which inverts
     * `object` with values transformed by `iteratee` and set by `setter`.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {Function} setter The function to set `accumulator` values.
     * @param {Function} iteratee The iteratee to transform values.
     * @param {Object} accumulator The initial inverted object.
     * @returns {Function} Returns `accumulator`.
     */
    function baseInverter(object, setter, iteratee, accumulator) {
      baseForOwn(object, function(value, key, object) {
        setter(accumulator, iteratee(value), key, object);
      });
      return accumulator;
    }

    /**
     * The base implementation of `_.invoke` without support for individual
     * method arguments.
     *
     * @private
     * @param {Object} object The object to query.
     * @param {Array|string} path The path of the method to invoke.
     * @param {Array} args The arguments to invoke the method with.
     * @returns {*} Returns the result of the invoked method.
     */
    function baseInvoke(object, path, args) {
      path = castPath(path, object);
      object = parent(object, path);
      var func = object == null ? object : object[toKey(last(path))];
      return func == null ? undefined : apply(func, object, args);
    }

    /**
     * The base implementation of `_.isArguments`.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an `arguments` object,
     */
    function baseIsArguments(value) {
      return isObjectLike(value) && baseGetTag(value) == argsTag;
    }

    /**
     * The base implementation of `_.isArrayBuffer` without Node.js optimizations.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.
     */
    function baseIsArrayBuffer(value) {
      return isObjectLike(value) && baseGetTag(value) == arrayBufferTag;
    }

    /**
     * The base implementation of `_.isDate` without Node.js optimizations.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a date object, else `false`.
     */
    function baseIsDate(value) {
      return isObjectLike(value) && baseGetTag(value) == dateTag;
    }

    /**
     * The base implementation of `_.isEqual` which supports partial comparisons
     * and tracks traversed objects.
     *
     * @private
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @param {boolean} bitmask The bitmask flags.
     *  1 - Unordered comparison
     *  2 - Partial comparison
     * @param {Function} [customizer] The function to customize comparisons.
     * @param {Object} [stack] Tracks traversed `value` and `other` objects.
     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
     */
    function baseIsEqual(value, other, bitmask, customizer, stack) {
      if (value === other) {
        return true;
      }
      if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) {
        return value !== value && other !== other;
      }
      return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);
    }

    /**
     * A specialized version of `baseIsEqual` for arrays and objects which performs
     * deep comparisons and tracks traversed objects enabling objects with circular
     * references to be compared.
     *
     * @private
     * @param {Object} object The object to compare.
     * @param {Object} other The other object to compare.
     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
     * @param {Function} customizer The function to customize comparisons.
     * @param {Function} equalFunc The function to determine equivalents of values.
     * @param {Object} [stack] Tracks traversed `object` and `other` objects.
     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
     */
    function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {
      var objIsArr = isArray(object),
          othIsArr = isArray(other),
          objTag = objIsArr ? arrayTag : getTag(object),
          othTag = othIsArr ? arrayTag : getTag(other);

      objTag = objTag == argsTag ? objectTag : objTag;
      othTag = othTag == argsTag ? objectTag : othTag;

      var objIsObj = objTag == objectTag,
          othIsObj = othTag == objectTag,
          isSameTag = objTag == othTag;

      if (isSameTag && isBuffer(object)) {
        if (!isBuffer(other)) {
          return false;
        }
        objIsArr = true;
        objIsObj = false;
      }
      if (isSameTag && !objIsObj) {
        stack || (stack = new Stack);
        return (objIsArr || isTypedArray(object))
          ? equalArrays(object, other, bitmask, customizer, equalFunc, stack)
          : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);
      }
      if (!(bitmask & COMPARE_PARTIAL_FLAG)) {
        var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),
            othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');

        if (objIsWrapped || othIsWrapped) {
          var objUnwrapped = objIsWrapped ? object.value() : object,
              othUnwrapped = othIsWrapped ? other.value() : other;

          stack || (stack = new Stack);
          return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);
        }
      }
      if (!isSameTag) {
        return false;
      }
      stack || (stack = new Stack);
      return equalObjects(object, other, bitmask, customizer, equalFunc, stack);
    }

    /**
     * The base implementation of `_.isMap` without Node.js optimizations.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a map, else `false`.
     */
    function baseIsMap(value) {
      return isObjectLike(value) && getTag(value) == mapTag;
    }

    /**
     * The base implementation of `_.isMatch` without support for iteratee shorthands.
     *
     * @private
     * @param {Object} object The object to inspect.
     * @param {Object} source The object of property values to match.
     * @param {Array} matchData The property names, values, and compare flags to match.
     * @param {Function} [customizer] The function to customize comparisons.
     * @returns {boolean} Returns `true` if `object` is a match, else `false`.
     */
    function baseIsMatch(object, source, matchData, customizer) {
      var index = matchData.length,
          length = index,
          noCustomizer = !customizer;

      if (object == null) {
        return !length;
      }
      object = Object(object);
      while (index--) {
        var data = matchData[index];
        if ((noCustomizer && data[2])
              ? data[1] !== object[data[0]]
              : !(data[0] in object)
            ) {
          return false;
        }
      }
      while (++index < length) {
        data = matchData[index];
        var key = data[0],
            objValue = object[key],
            srcValue = data[1];

        if (noCustomizer && data[2]) {
          if (objValue === undefined && !(key in object)) {
            return false;
          }
        } else {
          var stack = new Stack;
          if (customizer) {
            var result = customizer(objValue, srcValue, key, object, source, stack);
          }
          if (!(result === undefined
                ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack)
                : result
              )) {
            return false;
          }
        }
      }
      return true;
    }

    /**
     * The base implementation of `_.isNative` without bad shim checks.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a native function,
     *  else `false`.
     */
    function baseIsNative(value) {
      if (!isObject(value) || isMasked(value)) {
        return false;
      }
      var pattern = isFunction(value) ? reIsNative : reIsHostCtor;
      return pattern.test(toSource(value));
    }

    /**
     * The base implementation of `_.isRegExp` without Node.js optimizations.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.
     */
    function baseIsRegExp(value) {
      return isObjectLike(value) && baseGetTag(value) == regexpTag;
    }

    /**
     * The base implementation of `_.isSet` without Node.js optimizations.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a set, else `false`.
     */
    function baseIsSet(value) {
      return isObjectLike(value) && getTag(value) == setTag;
    }

    /**
     * The base implementation of `_.isTypedArray` without Node.js optimizations.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
     */
    function baseIsTypedArray(value) {
      return isObjectLike(value) &&
        isLength(value.length) && !!typedArrayTags[baseGetTag(value)];
    }

    /**
     * The base implementation of `_.iteratee`.
     *
     * @private
     * @param {*} [value=_.identity] The value to convert to an iteratee.
     * @returns {Function} Returns the iteratee.
     */
    function baseIteratee(value) {
      // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9.
      // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details.
      if (typeof value == 'function') {
        return value;
      }
      if (value == null) {
        return identity;
      }
      if (typeof value == 'object') {
        return isArray(value)
          ? baseMatchesProperty(value[0], value[1])
          : baseMatches(value);
      }
      return property(value);
    }

    /**
     * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names.
     */
    function baseKeys(object) {
      if (!isPrototype(object)) {
        return nativeKeys(object);
      }
      var result = [];
      for (var key in Object(object)) {
        if (hasOwnProperty.call(object, key) && key != 'constructor') {
          result.push(key);
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names.
     */
    function baseKeysIn(object) {
      if (!isObject(object)) {
        return nativeKeysIn(object);
      }
      var isProto = isPrototype(object),
          result = [];

      for (var key in object) {
        if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {
          result.push(key);
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.lt` which doesn't coerce arguments.
     *
     * @private
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if `value` is less than `other`,
     *  else `false`.
     */
    function baseLt(value, other) {
      return value < other;
    }

    /**
     * The base implementation of `_.map` without support for iteratee shorthands.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Array} Returns the new mapped array.
     */
    function baseMap(collection, iteratee) {
      var index = -1,
          result = isArrayLike(collection) ? Array(collection.length) : [];

      baseEach(collection, function(value, key, collection) {
        result[++index] = iteratee(value, key, collection);
      });
      return result;
    }

    /**
     * The base implementation of `_.matches` which doesn't clone `source`.
     *
     * @private
     * @param {Object} source The object of property values to match.
     * @returns {Function} Returns the new spec function.
     */
    function baseMatches(source) {
      var matchData = getMatchData(source);
      if (matchData.length == 1 && matchData[0][2]) {
        return matchesStrictComparable(matchData[0][0], matchData[0][1]);
      }
      return function(object) {
        return object === source || baseIsMatch(object, source, matchData);
      };
    }

    /**
     * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.
     *
     * @private
     * @param {string} path The path of the property to get.
     * @param {*} srcValue The value to match.
     * @returns {Function} Returns the new spec function.
     */
    function baseMatchesProperty(path, srcValue) {
      if (isKey(path) && isStrictComparable(srcValue)) {
        return matchesStrictComparable(toKey(path), srcValue);
      }
      return function(object) {
        var objValue = get(object, path);
        return (objValue === undefined && objValue === srcValue)
          ? hasIn(object, path)
          : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG);
      };
    }

    /**
     * The base implementation of `_.merge` without support for multiple sources.
     *
     * @private
     * @param {Object} object The destination object.
     * @param {Object} source The source object.
     * @param {number} srcIndex The index of `source`.
     * @param {Function} [customizer] The function to customize merged values.
     * @param {Object} [stack] Tracks traversed source values and their merged
     *  counterparts.
     */
    function baseMerge(object, source, srcIndex, customizer, stack) {
      if (object === source) {
        return;
      }
      baseFor(source, function(srcValue, key) {
        stack || (stack = new Stack);
        if (isObject(srcValue)) {
          baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack);
        }
        else {
          var newValue = customizer
            ? customizer(safeGet(object, key), srcValue, (key + ''), object, source, stack)
            : undefined;

          if (newValue === undefined) {
            newValue = srcValue;
          }
          assignMergeValue(object, key, newValue);
        }
      }, keysIn);
    }

    /**
     * A specialized version of `baseMerge` for arrays and objects which performs
     * deep merges and tracks traversed objects enabling objects with circular
     * references to be merged.
     *
     * @private
     * @param {Object} object The destination object.
     * @param {Object} source The source object.
     * @param {string} key The key of the value to merge.
     * @param {number} srcIndex The index of `source`.
     * @param {Function} mergeFunc The function to merge values.
     * @param {Function} [customizer] The function to customize assigned values.
     * @param {Object} [stack] Tracks traversed source values and their merged
     *  counterparts.
     */
    function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) {
      var objValue = safeGet(object, key),
          srcValue = safeGet(source, key),
          stacked = stack.get(srcValue);

      if (stacked) {
        assignMergeValue(object, key, stacked);
        return;
      }
      var newValue = customizer
        ? customizer(objValue, srcValue, (key + ''), object, source, stack)
        : undefined;

      var isCommon = newValue === undefined;

      if (isCommon) {
        var isArr = isArray(srcValue),
            isBuff = !isArr && isBuffer(srcValue),
            isTyped = !isArr && !isBuff && isTypedArray(srcValue);

        newValue = srcValue;
        if (isArr || isBuff || isTyped) {
          if (isArray(objValue)) {
            newValue = objValue;
          }
          else if (isArrayLikeObject(objValue)) {
            newValue = copyArray(objValue);
          }
          else if (isBuff) {
            isCommon = false;
            newValue = cloneBuffer(srcValue, true);
          }
          else if (isTyped) {
            isCommon = false;
            newValue = cloneTypedArray(srcValue, true);
          }
          else {
            newValue = [];
          }
        }
        else if (isPlainObject(srcValue) || isArguments(srcValue)) {
          newValue = objValue;
          if (isArguments(objValue)) {
            newValue = toPlainObject(objValue);
          }
          else if (!isObject(objValue) || isFunction(objValue)) {
            newValue = initCloneObject(srcValue);
          }
        }
        else {
          isCommon = false;
        }
      }
      if (isCommon) {
        // Recursively merge objects and arrays (susceptible to call stack limits).
        stack.set(srcValue, newValue);
        mergeFunc(newValue, srcValue, srcIndex, customizer, stack);
        stack['delete'](srcValue);
      }
      assignMergeValue(object, key, newValue);
    }

    /**
     * The base implementation of `_.nth` which doesn't coerce arguments.
     *
     * @private
     * @param {Array} array The array to query.
     * @param {number} n The index of the element to return.
     * @returns {*} Returns the nth element of `array`.
     */
    function baseNth(array, n) {
      var length = array.length;
      if (!length) {
        return;
      }
      n += n < 0 ? length : 0;
      return isIndex(n, length) ? array[n] : undefined;
    }

    /**
     * The base implementation of `_.orderBy` without param guards.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by.
     * @param {string[]} orders The sort orders of `iteratees`.
     * @returns {Array} Returns the new sorted array.
     */
    function baseOrderBy(collection, iteratees, orders) {
      var index = -1;
      iteratees = arrayMap(iteratees.length ? iteratees : [identity], baseUnary(getIteratee()));

      var result = baseMap(collection, function(value, key, collection) {
        var criteria = arrayMap(iteratees, function(iteratee) {
          return iteratee(value);
        });
        return { 'criteria': criteria, 'index': ++index, 'value': value };
      });

      return baseSortBy(result, function(object, other) {
        return compareMultiple(object, other, orders);
      });
    }

    /**
     * The base implementation of `_.pick` without support for individual
     * property identifiers.
     *
     * @private
     * @param {Object} object The source object.
     * @param {string[]} paths The property paths to pick.
     * @returns {Object} Returns the new object.
     */
    function basePick(object, paths) {
      return basePickBy(object, paths, function(value, path) {
        return hasIn(object, path);
      });
    }

    /**
     * The base implementation of  `_.pickBy` without support for iteratee shorthands.
     *
     * @private
     * @param {Object} object The source object.
     * @param {string[]} paths The property paths to pick.
     * @param {Function} predicate The function invoked per property.
     * @returns {Object} Returns the new object.
     */
    function basePickBy(object, paths, predicate) {
      var index = -1,
          length = paths.length,
          result = {};

      while (++index < length) {
        var path = paths[index],
            value = baseGet(object, path);

        if (predicate(value, path)) {
          baseSet(result, castPath(path, object), value);
        }
      }
      return result;
    }

    /**
     * A specialized version of `baseProperty` which supports deep paths.
     *
     * @private
     * @param {Array|string} path The path of the property to get.
     * @returns {Function} Returns the new accessor function.
     */
    function basePropertyDeep(path) {
      return function(object) {
        return baseGet(object, path);
      };
    }

    /**
     * The base implementation of `_.pullAllBy` without support for iteratee
     * shorthands.
     *
     * @private
     * @param {Array} array The array to modify.
     * @param {Array} values The values to remove.
     * @param {Function} [iteratee] The iteratee invoked per element.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns `array`.
     */
    function basePullAll(array, values, iteratee, comparator) {
      var indexOf = comparator ? baseIndexOfWith : baseIndexOf,
          index = -1,
          length = values.length,
          seen = array;

      if (array === values) {
        values = copyArray(values);
      }
      if (iteratee) {
        seen = arrayMap(array, baseUnary(iteratee));
      }
      while (++index < length) {
        var fromIndex = 0,
            value = values[index],
            computed = iteratee ? iteratee(value) : value;

        while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) {
          if (seen !== array) {
            splice.call(seen, fromIndex, 1);
          }
          splice.call(array, fromIndex, 1);
        }
      }
      return array;
    }

    /**
     * The base implementation of `_.pullAt` without support for individual
     * indexes or capturing the removed elements.
     *
     * @private
     * @param {Array} array The array to modify.
     * @param {number[]} indexes The indexes of elements to remove.
     * @returns {Array} Returns `array`.
     */
    function basePullAt(array, indexes) {
      var length = array ? indexes.length : 0,
          lastIndex = length - 1;

      while (length--) {
        var index = indexes[length];
        if (length == lastIndex || index !== previous) {
          var previous = index;
          if (isIndex(index)) {
            splice.call(array, index, 1);
          } else {
            baseUnset(array, index);
          }
        }
      }
      return array;
    }

    /**
     * The base implementation of `_.random` without support for returning
     * floating-point numbers.
     *
     * @private
     * @param {number} lower The lower bound.
     * @param {number} upper The upper bound.
     * @returns {number} Returns the random number.
     */
    function baseRandom(lower, upper) {
      return lower + nativeFloor(nativeRandom() * (upper - lower + 1));
    }

    /**
     * The base implementation of `_.range` and `_.rangeRight` which doesn't
     * coerce arguments.
     *
     * @private
     * @param {number} start The start of the range.
     * @param {number} end The end of the range.
     * @param {number} step The value to increment or decrement by.
     * @param {boolean} [fromRight] Specify iterating from right to left.
     * @returns {Array} Returns the range of numbers.
     */
    function baseRange(start, end, step, fromRight) {
      var index = -1,
          length = nativeMax(nativeCeil((end - start) / (step || 1)), 0),
          result = Array(length);

      while (length--) {
        result[fromRight ? length : ++index] = start;
        start += step;
      }
      return result;
    }

    /**
     * The base implementation of `_.repeat` which doesn't coerce arguments.
     *
     * @private
     * @param {string} string The string to repeat.
     * @param {number} n The number of times to repeat the string.
     * @returns {string} Returns the repeated string.
     */
    function baseRepeat(string, n) {
      var result = '';
      if (!string || n < 1 || n > MAX_SAFE_INTEGER) {
        return result;
      }
      // Leverage the exponentiation by squaring algorithm for a faster repeat.
      // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details.
      do {
        if (n % 2) {
          result += string;
        }
        n = nativeFloor(n / 2);
        if (n) {
          string += string;
        }
      } while (n);

      return result;
    }

    /**
     * The base implementation of `_.rest` which doesn't validate or coerce arguments.
     *
     * @private
     * @param {Function} func The function to apply a rest parameter to.
     * @param {number} [start=func.length-1] The start position of the rest parameter.
     * @returns {Function} Returns the new function.
     */
    function baseRest(func, start) {
      return setToString(overRest(func, start, identity), func + '');
    }

    /**
     * The base implementation of `_.sample`.
     *
     * @private
     * @param {Array|Object} collection The collection to sample.
     * @returns {*} Returns the random element.
     */
    function baseSample(collection) {
      return arraySample(values(collection));
    }

    /**
     * The base implementation of `_.sampleSize` without param guards.
     *
     * @private
     * @param {Array|Object} collection The collection to sample.
     * @param {number} n The number of elements to sample.
     * @returns {Array} Returns the random elements.
     */
    function baseSampleSize(collection, n) {
      var array = values(collection);
      return shuffleSelf(array, baseClamp(n, 0, array.length));
    }

    /**
     * The base implementation of `_.set`.
     *
     * @private
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to set.
     * @param {*} value The value to set.
     * @param {Function} [customizer] The function to customize path creation.
     * @returns {Object} Returns `object`.
     */
    function baseSet(object, path, value, customizer) {
      if (!isObject(object)) {
        return object;
      }
      path = castPath(path, object);

      var index = -1,
          length = path.length,
          lastIndex = length - 1,
          nested = object;

      while (nested != null && ++index < length) {
        var key = toKey(path[index]),
            newValue = value;

        if (index != lastIndex) {
          var objValue = nested[key];
          newValue = customizer ? customizer(objValue, key, nested) : undefined;
          if (newValue === undefined) {
            newValue = isObject(objValue)
              ? objValue
              : (isIndex(path[index + 1]) ? [] : {});
          }
        }
        assignValue(nested, key, newValue);
        nested = nested[key];
      }
      return object;
    }

    /**
     * The base implementation of `setData` without support for hot loop shorting.
     *
     * @private
     * @param {Function} func The function to associate metadata with.
     * @param {*} data The metadata.
     * @returns {Function} Returns `func`.
     */
    var baseSetData = !metaMap ? identity : function(func, data) {
      metaMap.set(func, data);
      return func;
    };

    /**
     * The base implementation of `setToString` without support for hot loop shorting.
     *
     * @private
     * @param {Function} func The function to modify.
     * @param {Function} string The `toString` result.
     * @returns {Function} Returns `func`.
     */
    var baseSetToString = !defineProperty ? identity : function(func, string) {
      return defineProperty(func, 'toString', {
        'configurable': true,
        'enumerable': false,
        'value': constant(string),
        'writable': true
      });
    };

    /**
     * The base implementation of `_.shuffle`.
     *
     * @private
     * @param {Array|Object} collection The collection to shuffle.
     * @returns {Array} Returns the new shuffled array.
     */
    function baseShuffle(collection) {
      return shuffleSelf(values(collection));
    }

    /**
     * The base implementation of `_.slice` without an iteratee call guard.
     *
     * @private
     * @param {Array} array The array to slice.
     * @param {number} [start=0] The start position.
     * @param {number} [end=array.length] The end position.
     * @returns {Array} Returns the slice of `array`.
     */
    function baseSlice(array, start, end) {
      var index = -1,
          length = array.length;

      if (start < 0) {
        start = -start > length ? 0 : (length + start);
      }
      end = end > length ? length : end;
      if (end < 0) {
        end += length;
      }
      length = start > end ? 0 : ((end - start) >>> 0);
      start >>>= 0;

      var result = Array(length);
      while (++index < length) {
        result[index] = array[index + start];
      }
      return result;
    }

    /**
     * The base implementation of `_.some` without support for iteratee shorthands.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} predicate The function invoked per iteration.
     * @returns {boolean} Returns `true` if any element passes the predicate check,
     *  else `false`.
     */
    function baseSome(collection, predicate) {
      var result;

      baseEach(collection, function(value, index, collection) {
        result = predicate(value, index, collection);
        return !result;
      });
      return !!result;
    }

    /**
     * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which
     * performs a binary search of `array` to determine the index at which `value`
     * should be inserted into `array` in order to maintain its sort order.
     *
     * @private
     * @param {Array} array The sorted array to inspect.
     * @param {*} value The value to evaluate.
     * @param {boolean} [retHighest] Specify returning the highest qualified index.
     * @returns {number} Returns the index at which `value` should be inserted
     *  into `array`.
     */
    function baseSortedIndex(array, value, retHighest) {
      var low = 0,
          high = array == null ? low : array.length;

      if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) {
        while (low < high) {
          var mid = (low + high) >>> 1,
              computed = array[mid];

          if (computed !== null && !isSymbol(computed) &&
              (retHighest ? (computed <= value) : (computed < value))) {
            low = mid + 1;
          } else {
            high = mid;
          }
        }
        return high;
      }
      return baseSortedIndexBy(array, value, identity, retHighest);
    }

    /**
     * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy`
     * which invokes `iteratee` for `value` and each element of `array` to compute
     * their sort ranking. The iteratee is invoked with one argument; (value).
     *
     * @private
     * @param {Array} array The sorted array to inspect.
     * @param {*} value The value to evaluate.
     * @param {Function} iteratee The iteratee invoked per element.
     * @param {boolean} [retHighest] Specify returning the highest qualified index.
     * @returns {number} Returns the index at which `value` should be inserted
     *  into `array`.
     */
    function baseSortedIndexBy(array, value, iteratee, retHighest) {
      value = iteratee(value);

      var low = 0,
          high = array == null ? 0 : array.length,
          valIsNaN = value !== value,
          valIsNull = value === null,
          valIsSymbol = isSymbol(value),
          valIsUndefined = value === undefined;

      while (low < high) {
        var mid = nativeFloor((low + high) / 2),
            computed = iteratee(array[mid]),
            othIsDefined = computed !== undefined,
            othIsNull = computed === null,
            othIsReflexive = computed === computed,
            othIsSymbol = isSymbol(computed);

        if (valIsNaN) {
          var setLow = retHighest || othIsReflexive;
        } else if (valIsUndefined) {
          setLow = othIsReflexive && (retHighest || othIsDefined);
        } else if (valIsNull) {
          setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull);
        } else if (valIsSymbol) {
          setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol);
        } else if (othIsNull || othIsSymbol) {
          setLow = false;
        } else {
          setLow = retHighest ? (computed <= value) : (computed < value);
        }
        if (setLow) {
          low = mid + 1;
        } else {
          high = mid;
        }
      }
      return nativeMin(high, MAX_ARRAY_INDEX);
    }

    /**
     * The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without
     * support for iteratee shorthands.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {Function} [iteratee] The iteratee invoked per element.
     * @returns {Array} Returns the new duplicate free array.
     */
    function baseSortedUniq(array, iteratee) {
      var index = -1,
          length = array.length,
          resIndex = 0,
          result = [];

      while (++index < length) {
        var value = array[index],
            computed = iteratee ? iteratee(value) : value;

        if (!index || !eq(computed, seen)) {
          var seen = computed;
          result[resIndex++] = value === 0 ? 0 : value;
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.toNumber` which doesn't ensure correct
     * conversions of binary, hexadecimal, or octal string values.
     *
     * @private
     * @param {*} value The value to process.
     * @returns {number} Returns the number.
     */
    function baseToNumber(value) {
      if (typeof value == 'number') {
        return value;
      }
      if (isSymbol(value)) {
        return NAN;
      }
      return +value;
    }

    /**
     * The base implementation of `_.toString` which doesn't convert nullish
     * values to empty strings.
     *
     * @private
     * @param {*} value The value to process.
     * @returns {string} Returns the string.
     */
    function baseToString(value) {
      // Exit early for strings to avoid a performance hit in some environments.
      if (typeof value == 'string') {
        return value;
      }
      if (isArray(value)) {
        // Recursively convert values (susceptible to call stack limits).
        return arrayMap(value, baseToString) + '';
      }
      if (isSymbol(value)) {
        return symbolToString ? symbolToString.call(value) : '';
      }
      var result = (value + '');
      return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
    }

    /**
     * The base implementation of `_.uniqBy` without support for iteratee shorthands.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {Function} [iteratee] The iteratee invoked per element.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new duplicate free array.
     */
    function baseUniq(array, iteratee, comparator) {
      var index = -1,
          includes = arrayIncludes,
          length = array.length,
          isCommon = true,
          result = [],
          seen = result;

      if (comparator) {
        isCommon = false;
        includes = arrayIncludesWith;
      }
      else if (length >= LARGE_ARRAY_SIZE) {
        var set = iteratee ? null : createSet(array);
        if (set) {
          return setToArray(set);
        }
        isCommon = false;
        includes = cacheHas;
        seen = new SetCache;
      }
      else {
        seen = iteratee ? [] : result;
      }
      outer:
      while (++index < length) {
        var value = array[index],
            computed = iteratee ? iteratee(value) : value;

        value = (comparator || value !== 0) ? value : 0;
        if (isCommon && computed === computed) {
          var seenIndex = seen.length;
          while (seenIndex--) {
            if (seen[seenIndex] === computed) {
              continue outer;
            }
          }
          if (iteratee) {
            seen.push(computed);
          }
          result.push(value);
        }
        else if (!includes(seen, computed, comparator)) {
          if (seen !== result) {
            seen.push(computed);
          }
          result.push(value);
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.unset`.
     *
     * @private
     * @param {Object} object The object to modify.
     * @param {Array|string} path The property path to unset.
     * @returns {boolean} Returns `true` if the property is deleted, else `false`.
     */
    function baseUnset(object, path) {
      path = castPath(path, object);
      object = parent(object, path);
      return object == null || delete object[toKey(last(path))];
    }

    /**
     * The base implementation of `_.update`.
     *
     * @private
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to update.
     * @param {Function} updater The function to produce the updated value.
     * @param {Function} [customizer] The function to customize path creation.
     * @returns {Object} Returns `object`.
     */
    function baseUpdate(object, path, updater, customizer) {
      return baseSet(object, path, updater(baseGet(object, path)), customizer);
    }

    /**
     * The base implementation of methods like `_.dropWhile` and `_.takeWhile`
     * without support for iteratee shorthands.
     *
     * @private
     * @param {Array} array The array to query.
     * @param {Function} predicate The function invoked per iteration.
     * @param {boolean} [isDrop] Specify dropping elements instead of taking them.
     * @param {boolean} [fromRight] Specify iterating from right to left.
     * @returns {Array} Returns the slice of `array`.
     */
    function baseWhile(array, predicate, isDrop, fromRight) {
      var length = array.length,
          index = fromRight ? length : -1;

      while ((fromRight ? index-- : ++index < length) &&
        predicate(array[index], index, array)) {}

      return isDrop
        ? baseSlice(array, (fromRight ? 0 : index), (fromRight ? index + 1 : length))
        : baseSlice(array, (fromRight ? index + 1 : 0), (fromRight ? length : index));
    }

    /**
     * The base implementation of `wrapperValue` which returns the result of
     * performing a sequence of actions on the unwrapped `value`, where each
     * successive action is supplied the return value of the previous.
     *
     * @private
     * @param {*} value The unwrapped value.
     * @param {Array} actions Actions to perform to resolve the unwrapped value.
     * @returns {*} Returns the resolved value.
     */
    function baseWrapperValue(value, actions) {
      var result = value;
      if (result instanceof LazyWrapper) {
        result = result.value();
      }
      return arrayReduce(actions, function(result, action) {
        return action.func.apply(action.thisArg, arrayPush([result], action.args));
      }, result);
    }

    /**
     * The base implementation of methods like `_.xor`, without support for
     * iteratee shorthands, that accepts an array of arrays to inspect.
     *
     * @private
     * @param {Array} arrays The arrays to inspect.
     * @param {Function} [iteratee] The iteratee invoked per element.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new array of values.
     */
    function baseXor(arrays, iteratee, comparator) {
      var length = arrays.length;
      if (length < 2) {
        return length ? baseUniq(arrays[0]) : [];
      }
      var index = -1,
          result = Array(length);

      while (++index < length) {
        var array = arrays[index],
            othIndex = -1;

        while (++othIndex < length) {
          if (othIndex != index) {
            result[index] = baseDifference(result[index] || array, arrays[othIndex], iteratee, comparator);
          }
        }
      }
      return baseUniq(baseFlatten(result, 1), iteratee, comparator);
    }

    /**
     * This base implementation of `_.zipObject` which assigns values using `assignFunc`.
     *
     * @private
     * @param {Array} props The property identifiers.
     * @param {Array} values The property values.
     * @param {Function} assignFunc The function to assign values.
     * @returns {Object} Returns the new object.
     */
    function baseZipObject(props, values, assignFunc) {
      var index = -1,
          length = props.length,
          valsLength = values.length,
          result = {};

      while (++index < length) {
        var value = index < valsLength ? values[index] : undefined;
        assignFunc(result, props[index], value);
      }
      return result;
    }

    /**
     * Casts `value` to an empty array if it's not an array like object.
     *
     * @private
     * @param {*} value The value to inspect.
     * @returns {Array|Object} Returns the cast array-like object.
     */
    function castArrayLikeObject(value) {
      return isArrayLikeObject(value) ? value : [];
    }

    /**
     * Casts `value` to `identity` if it's not a function.
     *
     * @private
     * @param {*} value The value to inspect.
     * @returns {Function} Returns cast function.
     */
    function castFunction(value) {
      return typeof value == 'function' ? value : identity;
    }

    /**
     * Casts `value` to a path array if it's not one.
     *
     * @private
     * @param {*} value The value to inspect.
     * @param {Object} [object] The object to query keys on.
     * @returns {Array} Returns the cast property path array.
     */
    function castPath(value, object) {
      if (isArray(value)) {
        return value;
      }
      return isKey(value, object) ? [value] : stringToPath(toString(value));
    }

    /**
     * A `baseRest` alias which can be replaced with `identity` by module
     * replacement plugins.
     *
     * @private
     * @type {Function}
     * @param {Function} func The function to apply a rest parameter to.
     * @returns {Function} Returns the new function.
     */
    var castRest = baseRest;

    /**
     * Casts `array` to a slice if it's needed.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {number} start The start position.
     * @param {number} [end=array.length] The end position.
     * @returns {Array} Returns the cast slice.
     */
    function castSlice(array, start, end) {
      var length = array.length;
      end = end === undefined ? length : end;
      return (!start && end >= length) ? array : baseSlice(array, start, end);
    }

    /**
     * A simple wrapper around the global [`clearTimeout`](https://mdn.io/clearTimeout).
     *
     * @private
     * @param {number|Object} id The timer id or timeout object of the timer to clear.
     */
    var clearTimeout = ctxClearTimeout || function(id) {
      return root.clearTimeout(id);
    };

    /**
     * Creates a clone of  `buffer`.
     *
     * @private
     * @param {Buffer} buffer The buffer to clone.
     * @param {boolean} [isDeep] Specify a deep clone.
     * @returns {Buffer} Returns the cloned buffer.
     */
    function cloneBuffer(buffer, isDeep) {
      if (isDeep) {
        return buffer.slice();
      }
      var length = buffer.length,
          result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length);

      buffer.copy(result);
      return result;
    }

    /**
     * Creates a clone of `arrayBuffer`.
     *
     * @private
     * @param {ArrayBuffer} arrayBuffer The array buffer to clone.
     * @returns {ArrayBuffer} Returns the cloned array buffer.
     */
    function cloneArrayBuffer(arrayBuffer) {
      var result = new arrayBuffer.constructor(arrayBuffer.byteLength);
      new Uint8Array(result).set(new Uint8Array(arrayBuffer));
      return result;
    }

    /**
     * Creates a clone of `dataView`.
     *
     * @private
     * @param {Object} dataView The data view to clone.
     * @param {boolean} [isDeep] Specify a deep clone.
     * @returns {Object} Returns the cloned data view.
     */
    function cloneDataView(dataView, isDeep) {
      var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer;
      return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);
    }

    /**
     * Creates a clone of `regexp`.
     *
     * @private
     * @param {Object} regexp The regexp to clone.
     * @returns {Object} Returns the cloned regexp.
     */
    function cloneRegExp(regexp) {
      var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));
      result.lastIndex = regexp.lastIndex;
      return result;
    }

    /**
     * Creates a clone of the `symbol` object.
     *
     * @private
     * @param {Object} symbol The symbol object to clone.
     * @returns {Object} Returns the cloned symbol object.
     */
    function cloneSymbol(symbol) {
      return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {};
    }

    /**
     * Creates a clone of `typedArray`.
     *
     * @private
     * @param {Object} typedArray The typed array to clone.
     * @param {boolean} [isDeep] Specify a deep clone.
     * @returns {Object} Returns the cloned typed array.
     */
    function cloneTypedArray(typedArray, isDeep) {
      var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;
      return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);
    }

    /**
     * Compares values to sort them in ascending order.
     *
     * @private
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {number} Returns the sort order indicator for `value`.
     */
    function compareAscending(value, other) {
      if (value !== other) {
        var valIsDefined = value !== undefined,
            valIsNull = value === null,
            valIsReflexive = value === value,
            valIsSymbol = isSymbol(value);

        var othIsDefined = other !== undefined,
            othIsNull = other === null,
            othIsReflexive = other === other,
            othIsSymbol = isSymbol(other);

        if ((!othIsNull && !othIsSymbol && !valIsSymbol && value > other) ||
            (valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol) ||
            (valIsNull && othIsDefined && othIsReflexive) ||
            (!valIsDefined && othIsReflexive) ||
            !valIsReflexive) {
          return 1;
        }
        if ((!valIsNull && !valIsSymbol && !othIsSymbol && value < other) ||
            (othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol) ||
            (othIsNull && valIsDefined && valIsReflexive) ||
            (!othIsDefined && valIsReflexive) ||
            !othIsReflexive) {
          return -1;
        }
      }
      return 0;
    }

    /**
     * Used by `_.orderBy` to compare multiple properties of a value to another
     * and stable sort them.
     *
     * If `orders` is unspecified, all values are sorted in ascending order. Otherwise,
     * specify an order of "desc" for descending or "asc" for ascending sort order
     * of corresponding values.
     *
     * @private
     * @param {Object} object The object to compare.
     * @param {Object} other The other object to compare.
     * @param {boolean[]|string[]} orders The order to sort by for each property.
     * @returns {number} Returns the sort order indicator for `object`.
     */
    function compareMultiple(object, other, orders) {
      var index = -1,
          objCriteria = object.criteria,
          othCriteria = other.criteria,
          length = objCriteria.length,
          ordersLength = orders.length;

      while (++index < length) {
        var result = compareAscending(objCriteria[index], othCriteria[index]);
        if (result) {
          if (index >= ordersLength) {
            return result;
          }
          var order = orders[index];
          return result * (order == 'desc' ? -1 : 1);
        }
      }
      // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications
      // that causes it, under certain circumstances, to provide the same value for
      // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247
      // for more details.
      //
      // This also ensures a stable sort in V8 and other engines.
      // See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details.
      return object.index - other.index;
    }

    /**
     * Creates an array that is the composition of partially applied arguments,
     * placeholders, and provided arguments into a single array of arguments.
     *
     * @private
     * @param {Array} args The provided arguments.
     * @param {Array} partials The arguments to prepend to those provided.
     * @param {Array} holders The `partials` placeholder indexes.
     * @params {boolean} [isCurried] Specify composing for a curried function.
     * @returns {Array} Returns the new array of composed arguments.
     */
    function composeArgs(args, partials, holders, isCurried) {
      var argsIndex = -1,
          argsLength = args.length,
          holdersLength = holders.length,
          leftIndex = -1,
          leftLength = partials.length,
          rangeLength = nativeMax(argsLength - holdersLength, 0),
          result = Array(leftLength + rangeLength),
          isUncurried = !isCurried;

      while (++leftIndex < leftLength) {
        result[leftIndex] = partials[leftIndex];
      }
      while (++argsIndex < holdersLength) {
        if (isUncurried || argsIndex < argsLength) {
          result[holders[argsIndex]] = args[argsIndex];
        }
      }
      while (rangeLength--) {
        result[leftIndex++] = args[argsIndex++];
      }
      return result;
    }

    /**
     * This function is like `composeArgs` except that the arguments composition
     * is tailored for `_.partialRight`.
     *
     * @private
     * @param {Array} args The provided arguments.
     * @param {Array} partials The arguments to append to those provided.
     * @param {Array} holders The `partials` placeholder indexes.
     * @params {boolean} [isCurried] Specify composing for a curried function.
     * @returns {Array} Returns the new array of composed arguments.
     */
    function composeArgsRight(args, partials, holders, isCurried) {
      var argsIndex = -1,
          argsLength = args.length,
          holdersIndex = -1,
          holdersLength = holders.length,
          rightIndex = -1,
          rightLength = partials.length,
          rangeLength = nativeMax(argsLength - holdersLength, 0),
          result = Array(rangeLength + rightLength),
          isUncurried = !isCurried;

      while (++argsIndex < rangeLength) {
        result[argsIndex] = args[argsIndex];
      }
      var offset = argsIndex;
      while (++rightIndex < rightLength) {
        result[offset + rightIndex] = partials[rightIndex];
      }
      while (++holdersIndex < holdersLength) {
        if (isUncurried || argsIndex < argsLength) {
          result[offset + holders[holdersIndex]] = args[argsIndex++];
        }
      }
      return result;
    }

    /**
     * Copies the values of `source` to `array`.
     *
     * @private
     * @param {Array} source The array to copy values from.
     * @param {Array} [array=[]] The array to copy values to.
     * @returns {Array} Returns `array`.
     */
    function copyArray(source, array) {
      var index = -1,
          length = source.length;

      array || (array = Array(length));
      while (++index < length) {
        array[index] = source[index];
      }
      return array;
    }

    /**
     * Copies properties of `source` to `object`.
     *
     * @private
     * @param {Object} source The object to copy properties from.
     * @param {Array} props The property identifiers to copy.
     * @param {Object} [object={}] The object to copy properties to.
     * @param {Function} [customizer] The function to customize copied values.
     * @returns {Object} Returns `object`.
     */
    function copyObject(source, props, object, customizer) {
      var isNew = !object;
      object || (object = {});

      var index = -1,
          length = props.length;

      while (++index < length) {
        var key = props[index];

        var newValue = customizer
          ? customizer(object[key], source[key], key, object, source)
          : undefined;

        if (newValue === undefined) {
          newValue = source[key];
        }
        if (isNew) {
          baseAssignValue(object, key, newValue);
        } else {
          assignValue(object, key, newValue);
        }
      }
      return object;
    }

    /**
     * Copies own symbols of `source` to `object`.
     *
     * @private
     * @param {Object} source The object to copy symbols from.
     * @param {Object} [object={}] The object to copy symbols to.
     * @returns {Object} Returns `object`.
     */
    function copySymbols(source, object) {
      return copyObject(source, getSymbols(source), object);
    }

    /**
     * Copies own and inherited symbols of `source` to `object`.
     *
     * @private
     * @param {Object} source The object to copy symbols from.
     * @param {Object} [object={}] The object to copy symbols to.
     * @returns {Object} Returns `object`.
     */
    function copySymbolsIn(source, object) {
      return copyObject(source, getSymbolsIn(source), object);
    }

    /**
     * Creates a function like `_.groupBy`.
     *
     * @private
     * @param {Function} setter The function to set accumulator values.
     * @param {Function} [initializer] The accumulator object initializer.
     * @returns {Function} Returns the new aggregator function.
     */
    function createAggregator(setter, initializer) {
      return function(collection, iteratee) {
        var func = isArray(collection) ? arrayAggregator : baseAggregator,
            accumulator = initializer ? initializer() : {};

        return func(collection, setter, getIteratee(iteratee, 2), accumulator);
      };
    }

    /**
     * Creates a function like `_.assign`.
     *
     * @private
     * @param {Function} assigner The function to assign values.
     * @returns {Function} Returns the new assigner function.
     */
    function createAssigner(assigner) {
      return baseRest(function(object, sources) {
        var index = -1,
            length = sources.length,
            customizer = length > 1 ? sources[length - 1] : undefined,
            guard = length > 2 ? sources[2] : undefined;

        customizer = (assigner.length > 3 && typeof customizer == 'function')
          ? (length--, customizer)
          : undefined;

        if (guard && isIterateeCall(sources[0], sources[1], guard)) {
          customizer = length < 3 ? undefined : customizer;
          length = 1;
        }
        object = Object(object);
        while (++index < length) {
          var source = sources[index];
          if (source) {
            assigner(object, source, index, customizer);
          }
        }
        return object;
      });
    }

    /**
     * Creates a `baseEach` or `baseEachRight` function.
     *
     * @private
     * @param {Function} eachFunc The function to iterate over a collection.
     * @param {boolean} [fromRight] Specify iterating from right to left.
     * @returns {Function} Returns the new base function.
     */
    function createBaseEach(eachFunc, fromRight) {
      return function(collection, iteratee) {
        if (collection == null) {
          return collection;
        }
        if (!isArrayLike(collection)) {
          return eachFunc(collection, iteratee);
        }
        var length = collection.length,
            index = fromRight ? length : -1,
            iterable = Object(collection);

        while ((fromRight ? index-- : ++index < length)) {
          if (iteratee(iterable[index], index, iterable) === false) {
            break;
          }
        }
        return collection;
      };
    }

    /**
     * Creates a base function for methods like `_.forIn` and `_.forOwn`.
     *
     * @private
     * @param {boolean} [fromRight] Specify iterating from right to left.
     * @returns {Function} Returns the new base function.
     */
    function createBaseFor(fromRight) {
      return function(object, iteratee, keysFunc) {
        var index = -1,
            iterable = Object(object),
            props = keysFunc(object),
            length = props.length;

        while (length--) {
          var key = props[fromRight ? length : ++index];
          if (iteratee(iterable[key], key, iterable) === false) {
            break;
          }
        }
        return object;
      };
    }

    /**
     * Creates a function that wraps `func` to invoke it with the optional `this`
     * binding of `thisArg`.
     *
     * @private
     * @param {Function} func The function to wrap.
     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
     * @param {*} [thisArg] The `this` binding of `func`.
     * @returns {Function} Returns the new wrapped function.
     */
    function createBind(func, bitmask, thisArg) {
      var isBind = bitmask & WRAP_BIND_FLAG,
          Ctor = createCtor(func);

      function wrapper() {
        var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
        return fn.apply(isBind ? thisArg : this, arguments);
      }
      return wrapper;
    }

    /**
     * Creates a function like `_.lowerFirst`.
     *
     * @private
     * @param {string} methodName The name of the `String` case method to use.
     * @returns {Function} Returns the new case function.
     */
    function createCaseFirst(methodName) {
      return function(string) {
        string = toString(string);

        var strSymbols = hasUnicode(string)
          ? stringToArray(string)
          : undefined;

        var chr = strSymbols
          ? strSymbols[0]
          : string.charAt(0);

        var trailing = strSymbols
          ? castSlice(strSymbols, 1).join('')
          : string.slice(1);

        return chr[methodName]() + trailing;
      };
    }

    /**
     * Creates a function like `_.camelCase`.
     *
     * @private
     * @param {Function} callback The function to combine each word.
     * @returns {Function} Returns the new compounder function.
     */
    function createCompounder(callback) {
      return function(string) {
        return arrayReduce(words(deburr(string).replace(reApos, '')), callback, '');
      };
    }

    /**
     * Creates a function that produces an instance of `Ctor` regardless of
     * whether it was invoked as part of a `new` expression or by `call` or `apply`.
     *
     * @private
     * @param {Function} Ctor The constructor to wrap.
     * @returns {Function} Returns the new wrapped function.
     */
    function createCtor(Ctor) {
      return function() {
        // Use a `switch` statement to work with class constructors. See
        // http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist
        // for more details.
        var args = arguments;
        switch (args.length) {
          case 0: return new Ctor;
          case 1: return new Ctor(args[0]);
          case 2: return new Ctor(args[0], args[1]);
          case 3: return new Ctor(args[0], args[1], args[2]);
          case 4: return new Ctor(args[0], args[1], args[2], args[3]);
          case 5: return new Ctor(args[0], args[1], args[2], args[3], args[4]);
          case 6: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5]);
          case 7: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5], args[6]);
        }
        var thisBinding = baseCreate(Ctor.prototype),
            result = Ctor.apply(thisBinding, args);

        // Mimic the constructor's `return` behavior.
        // See https://es5.github.io/#x13.2.2 for more details.
        return isObject(result) ? result : thisBinding;
      };
    }

    /**
     * Creates a function that wraps `func` to enable currying.
     *
     * @private
     * @param {Function} func The function to wrap.
     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
     * @param {number} arity The arity of `func`.
     * @returns {Function} Returns the new wrapped function.
     */
    function createCurry(func, bitmask, arity) {
      var Ctor = createCtor(func);

      function wrapper() {
        var length = arguments.length,
            args = Array(length),
            index = length,
            placeholder = getHolder(wrapper);

        while (index--) {
          args[index] = arguments[index];
        }
        var holders = (length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder)
          ? []
          : replaceHolders(args, placeholder);

        length -= holders.length;
        if (length < arity) {
          return createRecurry(
            func, bitmask, createHybrid, wrapper.placeholder, undefined,
            args, holders, undefined, undefined, arity - length);
        }
        var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
        return apply(fn, this, args);
      }
      return wrapper;
    }

    /**
     * Creates a `_.find` or `_.findLast` function.
     *
     * @private
     * @param {Function} findIndexFunc The function to find the collection index.
     * @returns {Function} Returns the new find function.
     */
    function createFind(findIndexFunc) {
      return function(collection, predicate, fromIndex) {
        var iterable = Object(collection);
        if (!isArrayLike(collection)) {
          var iteratee = getIteratee(predicate, 3);
          collection = keys(collection);
          predicate = function(key) { return iteratee(iterable[key], key, iterable); };
        }
        var index = findIndexFunc(collection, predicate, fromIndex);
        return index > -1 ? iterable[iteratee ? collection[index] : index] : undefined;
      };
    }

    /**
     * Creates a `_.flow` or `_.flowRight` function.
     *
     * @private
     * @param {boolean} [fromRight] Specify iterating from right to left.
     * @returns {Function} Returns the new flow function.
     */
    function createFlow(fromRight) {
      return flatRest(function(funcs) {
        var length = funcs.length,
            index = length,
            prereq = LodashWrapper.prototype.thru;

        if (fromRight) {
          funcs.reverse();
        }
        while (index--) {
          var func = funcs[index];
          if (typeof func != 'function') {
            throw new TypeError(FUNC_ERROR_TEXT);
          }
          if (prereq && !wrapper && getFuncName(func) == 'wrapper') {
            var wrapper = new LodashWrapper([], true);
          }
        }
        index = wrapper ? index : length;
        while (++index < length) {
          func = funcs[index];

          var funcName = getFuncName(func),
              data = funcName == 'wrapper' ? getData(func) : undefined;

          if (data && isLaziable(data[0]) &&
                data[1] == (WRAP_ARY_FLAG | WRAP_CURRY_FLAG | WRAP_PARTIAL_FLAG | WRAP_REARG_FLAG) &&
                !data[4].length && data[9] == 1
              ) {
            wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]);
          } else {
            wrapper = (func.length == 1 && isLaziable(func))
              ? wrapper[funcName]()
              : wrapper.thru(func);
          }
        }
        return function() {
          var args = arguments,
              value = args[0];

          if (wrapper && args.length == 1 && isArray(value)) {
            return wrapper.plant(value).value();
          }
          var index = 0,
              result = length ? funcs[index].apply(this, args) : value;

          while (++index < length) {
            result = funcs[index].call(this, result);
          }
          return result;
        };
      });
    }

    /**
     * Creates a function that wraps `func` to invoke it with optional `this`
     * binding of `thisArg`, partial application, and currying.
     *
     * @private
     * @param {Function|string} func The function or method name to wrap.
     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
     * @param {*} [thisArg] The `this` binding of `func`.
     * @param {Array} [partials] The arguments to prepend to those provided to
     *  the new function.
     * @param {Array} [holders] The `partials` placeholder indexes.
     * @param {Array} [partialsRight] The arguments to append to those provided
     *  to the new function.
     * @param {Array} [holdersRight] The `partialsRight` placeholder indexes.
     * @param {Array} [argPos] The argument positions of the new function.
     * @param {number} [ary] The arity cap of `func`.
     * @param {number} [arity] The arity of `func`.
     * @returns {Function} Returns the new wrapped function.
     */
    function createHybrid(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) {
      var isAry = bitmask & WRAP_ARY_FLAG,
          isBind = bitmask & WRAP_BIND_FLAG,
          isBindKey = bitmask & WRAP_BIND_KEY_FLAG,
          isCurried = bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG),
          isFlip = bitmask & WRAP_FLIP_FLAG,
          Ctor = isBindKey ? undefined : createCtor(func);

      function wrapper() {
        var length = arguments.length,
            args = Array(length),
            index = length;

        while (index--) {
          args[index] = arguments[index];
        }
        if (isCurried) {
          var placeholder = getHolder(wrapper),
              holdersCount = countHolders(args, placeholder);
        }
        if (partials) {
          args = composeArgs(args, partials, holders, isCurried);
        }
        if (partialsRight) {
          args = composeArgsRight(args, partialsRight, holdersRight, isCurried);
        }
        length -= holdersCount;
        if (isCurried && length < arity) {
          var newHolders = replaceHolders(args, placeholder);
          return createRecurry(
            func, bitmask, createHybrid, wrapper.placeholder, thisArg,
            args, newHolders, argPos, ary, arity - length
          );
        }
        var thisBinding = isBind ? thisArg : this,
            fn = isBindKey ? thisBinding[func] : func;

        length = args.length;
        if (argPos) {
          args = reorder(args, argPos);
        } else if (isFlip && length > 1) {
          args.reverse();
        }
        if (isAry && ary < length) {
          args.length = ary;
        }
        if (this && this !== root && this instanceof wrapper) {
          fn = Ctor || createCtor(fn);
        }
        return fn.apply(thisBinding, args);
      }
      return wrapper;
    }

    /**
     * Creates a function like `_.invertBy`.
     *
     * @private
     * @param {Function} setter The function to set accumulator values.
     * @param {Function} toIteratee The function to resolve iteratees.
     * @returns {Function} Returns the new inverter function.
     */
    function createInverter(setter, toIteratee) {
      return function(object, iteratee) {
        return baseInverter(object, setter, toIteratee(iteratee), {});
      };
    }

    /**
     * Creates a function that performs a mathematical operation on two values.
     *
     * @private
     * @param {Function} operator The function to perform the operation.
     * @param {number} [defaultValue] The value used for `undefined` arguments.
     * @returns {Function} Returns the new mathematical operation function.
     */
    function createMathOperation(operator, defaultValue) {
      return function(value, other) {
        var result;
        if (value === undefined && other === undefined) {
          return defaultValue;
        }
        if (value !== undefined) {
          result = value;
        }
        if (other !== undefined) {
          if (result === undefined) {
            return other;
          }
          if (typeof value == 'string' || typeof other == 'string') {
            value = baseToString(value);
            other = baseToString(other);
          } else {
            value = baseToNumber(value);
            other = baseToNumber(other);
          }
          result = operator(value, other);
        }
        return result;
      };
    }

    /**
     * Creates a function like `_.over`.
     *
     * @private
     * @param {Function} arrayFunc The function to iterate over iteratees.
     * @returns {Function} Returns the new over function.
     */
    function createOver(arrayFunc) {
      return flatRest(function(iteratees) {
        iteratees = arrayMap(iteratees, baseUnary(getIteratee()));
        return baseRest(function(args) {
          var thisArg = this;
          return arrayFunc(iteratees, function(iteratee) {
            return apply(iteratee, thisArg, args);
          });
        });
      });
    }

    /**
     * Creates the padding for `string` based on `length`. The `chars` string
     * is truncated if the number of characters exceeds `length`.
     *
     * @private
     * @param {number} length The padding length.
     * @param {string} [chars=' '] The string used as padding.
     * @returns {string} Returns the padding for `string`.
     */
    function createPadding(length, chars) {
      chars = chars === undefined ? ' ' : baseToString(chars);

      var charsLength = chars.length;
      if (charsLength < 2) {
        return charsLength ? baseRepeat(chars, length) : chars;
      }
      var result = baseRepeat(chars, nativeCeil(length / stringSize(chars)));
      return hasUnicode(chars)
        ? castSlice(stringToArray(result), 0, length).join('')
        : result.slice(0, length);
    }

    /**
     * Creates a function that wraps `func` to invoke it with the `this` binding
     * of `thisArg` and `partials` prepended to the arguments it receives.
     *
     * @private
     * @param {Function} func The function to wrap.
     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
     * @param {*} thisArg The `this` binding of `func`.
     * @param {Array} partials The arguments to prepend to those provided to
     *  the new function.
     * @returns {Function} Returns the new wrapped function.
     */
    function createPartial(func, bitmask, thisArg, partials) {
      var isBind = bitmask & WRAP_BIND_FLAG,
          Ctor = createCtor(func);

      function wrapper() {
        var argsIndex = -1,
            argsLength = arguments.length,
            leftIndex = -1,
            leftLength = partials.length,
            args = Array(leftLength + argsLength),
            fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;

        while (++leftIndex < leftLength) {
          args[leftIndex] = partials[leftIndex];
        }
        while (argsLength--) {
          args[leftIndex++] = arguments[++argsIndex];
        }
        return apply(fn, isBind ? thisArg : this, args);
      }
      return wrapper;
    }

    /**
     * Creates a `_.range` or `_.rangeRight` function.
     *
     * @private
     * @param {boolean} [fromRight] Specify iterating from right to left.
     * @returns {Function} Returns the new range function.
     */
    function createRange(fromRight) {
      return function(start, end, step) {
        if (step && typeof step != 'number' && isIterateeCall(start, end, step)) {
          end = step = undefined;
        }
        // Ensure the sign of `-0` is preserved.
        start = toFinite(start);
        if (end === undefined) {
          end = start;
          start = 0;
        } else {
          end = toFinite(end);
        }
        step = step === undefined ? (start < end ? 1 : -1) : toFinite(step);
        return baseRange(start, end, step, fromRight);
      };
    }

    /**
     * Creates a function that performs a relational operation on two values.
     *
     * @private
     * @param {Function} operator The function to perform the operation.
     * @returns {Function} Returns the new relational operation function.
     */
    function createRelationalOperation(operator) {
      return function(value, other) {
        if (!(typeof value == 'string' && typeof other == 'string')) {
          value = toNumber(value);
          other = toNumber(other);
        }
        return operator(value, other);
      };
    }

    /**
     * Creates a function that wraps `func` to continue currying.
     *
     * @private
     * @param {Function} func The function to wrap.
     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
     * @param {Function} wrapFunc The function to create the `func` wrapper.
     * @param {*} placeholder The placeholder value.
     * @param {*} [thisArg] The `this` binding of `func`.
     * @param {Array} [partials] The arguments to prepend to those provided to
     *  the new function.
     * @param {Array} [holders] The `partials` placeholder indexes.
     * @param {Array} [argPos] The argument positions of the new function.
     * @param {number} [ary] The arity cap of `func`.
     * @param {number} [arity] The arity of `func`.
     * @returns {Function} Returns the new wrapped function.
     */
    function createRecurry(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) {
      var isCurry = bitmask & WRAP_CURRY_FLAG,
          newHolders = isCurry ? holders : undefined,
          newHoldersRight = isCurry ? undefined : holders,
          newPartials = isCurry ? partials : undefined,
          newPartialsRight = isCurry ? undefined : partials;

      bitmask |= (isCurry ? WRAP_PARTIAL_FLAG : WRAP_PARTIAL_RIGHT_FLAG);
      bitmask &= ~(isCurry ? WRAP_PARTIAL_RIGHT_FLAG : WRAP_PARTIAL_FLAG);

      if (!(bitmask & WRAP_CURRY_BOUND_FLAG)) {
        bitmask &= ~(WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG);
      }
      var newData = [
        func, bitmask, thisArg, newPartials, newHolders, newPartialsRight,
        newHoldersRight, argPos, ary, arity
      ];

      var result = wrapFunc.apply(undefined, newData);
      if (isLaziable(func)) {
        setData(result, newData);
      }
      result.placeholder = placeholder;
      return setWrapToString(result, func, bitmask);
    }

    /**
     * Creates a function like `_.round`.
     *
     * @private
     * @param {string} methodName The name of the `Math` method to use when rounding.
     * @returns {Function} Returns the new round function.
     */
    function createRound(methodName) {
      var func = Math[methodName];
      return function(number, precision) {
        number = toNumber(number);
        precision = precision == null ? 0 : nativeMin(toInteger(precision), 292);
        if (precision && nativeIsFinite(number)) {
          // Shift with exponential notation to avoid floating-point issues.
          // See [MDN](https://mdn.io/round#Examples) for more details.
          var pair = (toString(number) + 'e').split('e'),
              value = func(pair[0] + 'e' + (+pair[1] + precision));

          pair = (toString(value) + 'e').split('e');
          return +(pair[0] + 'e' + (+pair[1] - precision));
        }
        return func(number);
      };
    }

    /**
     * Creates a set object of `values`.
     *
     * @private
     * @param {Array} values The values to add to the set.
     * @returns {Object} Returns the new set.
     */
    var createSet = !(Set && (1 / setToArray(new Set([,-0]))[1]) == INFINITY) ? noop : function(values) {
      return new Set(values);
    };

    /**
     * Creates a `_.toPairs` or `_.toPairsIn` function.
     *
     * @private
     * @param {Function} keysFunc The function to get the keys of a given object.
     * @returns {Function} Returns the new pairs function.
     */
    function createToPairs(keysFunc) {
      return function(object) {
        var tag = getTag(object);
        if (tag == mapTag) {
          return mapToArray(object);
        }
        if (tag == setTag) {
          return setToPairs(object);
        }
        return baseToPairs(object, keysFunc(object));
      };
    }

    /**
     * Creates a function that either curries or invokes `func` with optional
     * `this` binding and partially applied arguments.
     *
     * @private
     * @param {Function|string} func The function or method name to wrap.
     * @param {number} bitmask The bitmask flags.
     *    1 - `_.bind`
     *    2 - `_.bindKey`
     *    4 - `_.curry` or `_.curryRight` of a bound function
     *    8 - `_.curry`
     *   16 - `_.curryRight`
     *   32 - `_.partial`
     *   64 - `_.partialRight`
     *  128 - `_.rearg`
     *  256 - `_.ary`
     *  512 - `_.flip`
     * @param {*} [thisArg] The `this` binding of `func`.
     * @param {Array} [partials] The arguments to be partially applied.
     * @param {Array} [holders] The `partials` placeholder indexes.
     * @param {Array} [argPos] The argument positions of the new function.
     * @param {number} [ary] The arity cap of `func`.
     * @param {number} [arity] The arity of `func`.
     * @returns {Function} Returns the new wrapped function.
     */
    function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {
      var isBindKey = bitmask & WRAP_BIND_KEY_FLAG;
      if (!isBindKey && typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      var length = partials ? partials.length : 0;
      if (!length) {
        bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG);
        partials = holders = undefined;
      }
      ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0);
      arity = arity === undefined ? arity : toInteger(arity);
      length -= holders ? holders.length : 0;

      if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) {
        var partialsRight = partials,
            holdersRight = holders;

        partials = holders = undefined;
      }
      var data = isBindKey ? undefined : getData(func);

      var newData = [
        func, bitmask, thisArg, partials, holders, partialsRight, holdersRight,
        argPos, ary, arity
      ];

      if (data) {
        mergeData(newData, data);
      }
      func = newData[0];
      bitmask = newData[1];
      thisArg = newData[2];
      partials = newData[3];
      holders = newData[4];
      arity = newData[9] = newData[9] === undefined
        ? (isBindKey ? 0 : func.length)
        : nativeMax(newData[9] - length, 0);

      if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) {
        bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG);
      }
      if (!bitmask || bitmask == WRAP_BIND_FLAG) {
        var result = createBind(func, bitmask, thisArg);
      } else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) {
        result = createCurry(func, bitmask, arity);
      } else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) {
        result = createPartial(func, bitmask, thisArg, partials);
      } else {
        result = createHybrid.apply(undefined, newData);
      }
      var setter = data ? baseSetData : setData;
      return setWrapToString(setter(result, newData), func, bitmask);
    }

    /**
     * Used by `_.defaults` to customize its `_.assignIn` use to assign properties
     * of source objects to the destination object for all destination properties
     * that resolve to `undefined`.
     *
     * @private
     * @param {*} objValue The destination value.
     * @param {*} srcValue The source value.
     * @param {string} key The key of the property to assign.
     * @param {Object} object The parent object of `objValue`.
     * @returns {*} Returns the value to assign.
     */
    function customDefaultsAssignIn(objValue, srcValue, key, object) {
      if (objValue === undefined ||
          (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) {
        return srcValue;
      }
      return objValue;
    }

    /**
     * Used by `_.defaultsDeep` to customize its `_.merge` use to merge source
     * objects into destination objects that are passed thru.
     *
     * @private
     * @param {*} objValue The destination value.
     * @param {*} srcValue The source value.
     * @param {string} key The key of the property to merge.
     * @param {Object} object The parent object of `objValue`.
     * @param {Object} source The parent object of `srcValue`.
     * @param {Object} [stack] Tracks traversed source values and their merged
     *  counterparts.
     * @returns {*} Returns the value to assign.
     */
    function customDefaultsMerge(objValue, srcValue, key, object, source, stack) {
      if (isObject(objValue) && isObject(srcValue)) {
        // Recursively merge objects and arrays (susceptible to call stack limits).
        stack.set(srcValue, objValue);
        baseMerge(objValue, srcValue, undefined, customDefaultsMerge, stack);
        stack['delete'](srcValue);
      }
      return objValue;
    }

    /**
     * Used by `_.omit` to customize its `_.cloneDeep` use to only clone plain
     * objects.
     *
     * @private
     * @param {*} value The value to inspect.
     * @param {string} key The key of the property to inspect.
     * @returns {*} Returns the uncloned value or `undefined` to defer cloning to `_.cloneDeep`.
     */
    function customOmitClone(value) {
      return isPlainObject(value) ? undefined : value;
    }

    /**
     * A specialized version of `baseIsEqualDeep` for arrays with support for
     * partial deep comparisons.
     *
     * @private
     * @param {Array} array The array to compare.
     * @param {Array} other The other array to compare.
     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
     * @param {Function} customizer The function to customize comparisons.
     * @param {Function} equalFunc The function to determine equivalents of values.
     * @param {Object} stack Tracks traversed `array` and `other` objects.
     * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.
     */
    function equalArrays(array, other, bitmask, customizer, equalFunc, stack) {
      var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
          arrLength = array.length,
          othLength = other.length;

      if (arrLength != othLength && !(isPartial && othLength > arrLength)) {
        return false;
      }
      // Assume cyclic values are equal.
      var stacked = stack.get(array);
      if (stacked && stack.get(other)) {
        return stacked == other;
      }
      var index = -1,
          result = true,
          seen = (bitmask & COMPARE_UNORDERED_FLAG) ? new SetCache : undefined;

      stack.set(array, other);
      stack.set(other, array);

      // Ignore non-index properties.
      while (++index < arrLength) {
        var arrValue = array[index],
            othValue = other[index];

        if (customizer) {
          var compared = isPartial
            ? customizer(othValue, arrValue, index, other, array, stack)
            : customizer(arrValue, othValue, index, array, other, stack);
        }
        if (compared !== undefined) {
          if (compared) {
            continue;
          }
          result = false;
          break;
        }
        // Recursively compare arrays (susceptible to call stack limits).
        if (seen) {
          if (!arraySome(other, function(othValue, othIndex) {
                if (!cacheHas(seen, othIndex) &&
                    (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {
                  return seen.push(othIndex);
                }
              })) {
            result = false;
            break;
          }
        } else if (!(
              arrValue === othValue ||
                equalFunc(arrValue, othValue, bitmask, customizer, stack)
            )) {
          result = false;
          break;
        }
      }
      stack['delete'](array);
      stack['delete'](other);
      return result;
    }

    /**
     * A specialized version of `baseIsEqualDeep` for comparing objects of
     * the same `toStringTag`.
     *
     * **Note:** This function only supports comparing values with tags of
     * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.
     *
     * @private
     * @param {Object} object The object to compare.
     * @param {Object} other The other object to compare.
     * @param {string} tag The `toStringTag` of the objects to compare.
     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
     * @param {Function} customizer The function to customize comparisons.
     * @param {Function} equalFunc The function to determine equivalents of values.
     * @param {Object} stack Tracks traversed `object` and `other` objects.
     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
     */
    function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {
      switch (tag) {
        case dataViewTag:
          if ((object.byteLength != other.byteLength) ||
              (object.byteOffset != other.byteOffset)) {
            return false;
          }
          object = object.buffer;
          other = other.buffer;

        case arrayBufferTag:
          if ((object.byteLength != other.byteLength) ||
              !equalFunc(new Uint8Array(object), new Uint8Array(other))) {
            return false;
          }
          return true;

        case boolTag:
        case dateTag:
        case numberTag:
          // Coerce booleans to `1` or `0` and dates to milliseconds.
          // Invalid dates are coerced to `NaN`.
          return eq(+object, +other);

        case errorTag:
          return object.name == other.name && object.message == other.message;

        case regexpTag:
        case stringTag:
          // Coerce regexes to strings and treat strings, primitives and objects,
          // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring
          // for more details.
          return object == (other + '');

        case mapTag:
          var convert = mapToArray;

        case setTag:
          var isPartial = bitmask & COMPARE_PARTIAL_FLAG;
          convert || (convert = setToArray);

          if (object.size != other.size && !isPartial) {
            return false;
          }
          // Assume cyclic values are equal.
          var stacked = stack.get(object);
          if (stacked) {
            return stacked == other;
          }
          bitmask |= COMPARE_UNORDERED_FLAG;

          // Recursively compare objects (susceptible to call stack limits).
          stack.set(object, other);
          var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack);
          stack['delete'](object);
          return result;

        case symbolTag:
          if (symbolValueOf) {
            return symbolValueOf.call(object) == symbolValueOf.call(other);
          }
      }
      return false;
    }

    /**
     * A specialized version of `baseIsEqualDeep` for objects with support for
     * partial deep comparisons.
     *
     * @private
     * @param {Object} object The object to compare.
     * @param {Object} other The other object to compare.
     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
     * @param {Function} customizer The function to customize comparisons.
     * @param {Function} equalFunc The function to determine equivalents of values.
     * @param {Object} stack Tracks traversed `object` and `other` objects.
     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
     */
    function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {
      var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
          objProps = getAllKeys(object),
          objLength = objProps.length,
          othProps = getAllKeys(other),
          othLength = othProps.length;

      if (objLength != othLength && !isPartial) {
        return false;
      }
      var index = objLength;
      while (index--) {
        var key = objProps[index];
        if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) {
          return false;
        }
      }
      // Assume cyclic values are equal.
      var stacked = stack.get(object);
      if (stacked && stack.get(other)) {
        return stacked == other;
      }
      var result = true;
      stack.set(object, other);
      stack.set(other, object);

      var skipCtor = isPartial;
      while (++index < objLength) {
        key = objProps[index];
        var objValue = object[key],
            othValue = other[key];

        if (customizer) {
          var compared = isPartial
            ? customizer(othValue, objValue, key, other, object, stack)
            : customizer(objValue, othValue, key, object, other, stack);
        }
        // Recursively compare objects (susceptible to call stack limits).
        if (!(compared === undefined
              ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack))
              : compared
            )) {
          result = false;
          break;
        }
        skipCtor || (skipCtor = key == 'constructor');
      }
      if (result && !skipCtor) {
        var objCtor = object.constructor,
            othCtor = other.constructor;

        // Non `Object` object instances with different constructors are not equal.
        if (objCtor != othCtor &&
            ('constructor' in object && 'constructor' in other) &&
            !(typeof objCtor == 'function' && objCtor instanceof objCtor &&
              typeof othCtor == 'function' && othCtor instanceof othCtor)) {
          result = false;
        }
      }
      stack['delete'](object);
      stack['delete'](other);
      return result;
    }

    /**
     * A specialized version of `baseRest` which flattens the rest array.
     *
     * @private
     * @param {Function} func The function to apply a rest parameter to.
     * @returns {Function} Returns the new function.
     */
    function flatRest(func) {
      return setToString(overRest(func, undefined, flatten), func + '');
    }

    /**
     * Creates an array of own enumerable property names and symbols of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names and symbols.
     */
    function getAllKeys(object) {
      return baseGetAllKeys(object, keys, getSymbols);
    }

    /**
     * Creates an array of own and inherited enumerable property names and
     * symbols of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names and symbols.
     */
    function getAllKeysIn(object) {
      return baseGetAllKeys(object, keysIn, getSymbolsIn);
    }

    /**
     * Gets metadata for `func`.
     *
     * @private
     * @param {Function} func The function to query.
     * @returns {*} Returns the metadata for `func`.
     */
    var getData = !metaMap ? noop : function(func) {
      return metaMap.get(func);
    };

    /**
     * Gets the name of `func`.
     *
     * @private
     * @param {Function} func The function to query.
     * @returns {string} Returns the function name.
     */
    function getFuncName(func) {
      var result = (func.name + ''),
          array = realNames[result],
          length = hasOwnProperty.call(realNames, result) ? array.length : 0;

      while (length--) {
        var data = array[length],
            otherFunc = data.func;
        if (otherFunc == null || otherFunc == func) {
          return data.name;
        }
      }
      return result;
    }

    /**
     * Gets the argument placeholder value for `func`.
     *
     * @private
     * @param {Function} func The function to inspect.
     * @returns {*} Returns the placeholder value.
     */
    function getHolder(func) {
      var object = hasOwnProperty.call(lodash, 'placeholder') ? lodash : func;
      return object.placeholder;
    }

    /**
     * Gets the appropriate "iteratee" function. If `_.iteratee` is customized,
     * this function returns the custom method, otherwise it returns `baseIteratee`.
     * If arguments are provided, the chosen function is invoked with them and
     * its result is returned.
     *
     * @private
     * @param {*} [value] The value to convert to an iteratee.
     * @param {number} [arity] The arity of the created iteratee.
     * @returns {Function} Returns the chosen function or its result.
     */
    function getIteratee() {
      var result = lodash.iteratee || iteratee;
      result = result === iteratee ? baseIteratee : result;
      return arguments.length ? result(arguments[0], arguments[1]) : result;
    }

    /**
     * Gets the data for `map`.
     *
     * @private
     * @param {Object} map The map to query.
     * @param {string} key The reference key.
     * @returns {*} Returns the map data.
     */
    function getMapData(map, key) {
      var data = map.__data__;
      return isKeyable(key)
        ? data[typeof key == 'string' ? 'string' : 'hash']
        : data.map;
    }

    /**
     * Gets the property names, values, and compare flags of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the match data of `object`.
     */
    function getMatchData(object) {
      var result = keys(object),
          length = result.length;

      while (length--) {
        var key = result[length],
            value = object[key];

        result[length] = [key, value, isStrictComparable(value)];
      }
      return result;
    }

    /**
     * Gets the native function at `key` of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @param {string} key The key of the method to get.
     * @returns {*} Returns the function if it's native, else `undefined`.
     */
    function getNative(object, key) {
      var value = getValue(object, key);
      return baseIsNative(value) ? value : undefined;
    }

    /**
     * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.
     *
     * @private
     * @param {*} value The value to query.
     * @returns {string} Returns the raw `toStringTag`.
     */
    function getRawTag(value) {
      var isOwn = hasOwnProperty.call(value, symToStringTag),
          tag = value[symToStringTag];

      try {
        value[symToStringTag] = undefined;
        var unmasked = true;
      } catch (e) {}

      var result = nativeObjectToString.call(value);
      if (unmasked) {
        if (isOwn) {
          value[symToStringTag] = tag;
        } else {
          delete value[symToStringTag];
        }
      }
      return result;
    }

    /**
     * Creates an array of the own enumerable symbols of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of symbols.
     */
    var getSymbols = !nativeGetSymbols ? stubArray : function(object) {
      if (object == null) {
        return [];
      }
      object = Object(object);
      return arrayFilter(nativeGetSymbols(object), function(symbol) {
        return propertyIsEnumerable.call(object, symbol);
      });
    };

    /**
     * Creates an array of the own and inherited enumerable symbols of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of symbols.
     */
    var getSymbolsIn = !nativeGetSymbols ? stubArray : function(object) {
      var result = [];
      while (object) {
        arrayPush(result, getSymbols(object));
        object = getPrototype(object);
      }
      return result;
    };

    /**
     * Gets the `toStringTag` of `value`.
     *
     * @private
     * @param {*} value The value to query.
     * @returns {string} Returns the `toStringTag`.
     */
    var getTag = baseGetTag;

    // Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6.
    if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||
        (Map && getTag(new Map) != mapTag) ||
        (Promise && getTag(Promise.resolve()) != promiseTag) ||
        (Set && getTag(new Set) != setTag) ||
        (WeakMap && getTag(new WeakMap) != weakMapTag)) {
      getTag = function(value) {
        var result = baseGetTag(value),
            Ctor = result == objectTag ? value.constructor : undefined,
            ctorString = Ctor ? toSource(Ctor) : '';

        if (ctorString) {
          switch (ctorString) {
            case dataViewCtorString: return dataViewTag;
            case mapCtorString: return mapTag;
            case promiseCtorString: return promiseTag;
            case setCtorString: return setTag;
            case weakMapCtorString: return weakMapTag;
          }
        }
        return result;
      };
    }

    /**
     * Gets the view, applying any `transforms` to the `start` and `end` positions.
     *
     * @private
     * @param {number} start The start of the view.
     * @param {number} end The end of the view.
     * @param {Array} transforms The transformations to apply to the view.
     * @returns {Object} Returns an object containing the `start` and `end`
     *  positions of the view.
     */
    function getView(start, end, transforms) {
      var index = -1,
          length = transforms.length;

      while (++index < length) {
        var data = transforms[index],
            size = data.size;

        switch (data.type) {
          case 'drop':      start += size; break;
          case 'dropRight': end -= size; break;
          case 'take':      end = nativeMin(end, start + size); break;
          case 'takeRight': start = nativeMax(start, end - size); break;
        }
      }
      return { 'start': start, 'end': end };
    }

    /**
     * Extracts wrapper details from the `source` body comment.
     *
     * @private
     * @param {string} source The source to inspect.
     * @returns {Array} Returns the wrapper details.
     */
    function getWrapDetails(source) {
      var match = source.match(reWrapDetails);
      return match ? match[1].split(reSplitDetails) : [];
    }

    /**
     * Checks if `path` exists on `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @param {Array|string} path The path to check.
     * @param {Function} hasFunc The function to check properties.
     * @returns {boolean} Returns `true` if `path` exists, else `false`.
     */
    function hasPath(object, path, hasFunc) {
      path = castPath(path, object);

      var index = -1,
          length = path.length,
          result = false;

      while (++index < length) {
        var key = toKey(path[index]);
        if (!(result = object != null && hasFunc(object, key))) {
          break;
        }
        object = object[key];
      }
      if (result || ++index != length) {
        return result;
      }
      length = object == null ? 0 : object.length;
      return !!length && isLength(length) && isIndex(key, length) &&
        (isArray(object) || isArguments(object));
    }

    /**
     * Initializes an array clone.
     *
     * @private
     * @param {Array} array The array to clone.
     * @returns {Array} Returns the initialized clone.
     */
    function initCloneArray(array) {
      var length = array.length,
          result = new array.constructor(length);

      // Add properties assigned by `RegExp#exec`.
      if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {
        result.index = array.index;
        result.input = array.input;
      }
      return result;
    }

    /**
     * Initializes an object clone.
     *
     * @private
     * @param {Object} object The object to clone.
     * @returns {Object} Returns the initialized clone.
     */
    function initCloneObject(object) {
      return (typeof object.constructor == 'function' && !isPrototype(object))
        ? baseCreate(getPrototype(object))
        : {};
    }

    /**
     * Initializes an object clone based on its `toStringTag`.
     *
     * **Note:** This function only supports cloning values with tags of
     * `Boolean`, `Date`, `Error`, `Map`, `Number`, `RegExp`, `Set`, or `String`.
     *
     * @private
     * @param {Object} object The object to clone.
     * @param {string} tag The `toStringTag` of the object to clone.
     * @param {boolean} [isDeep] Specify a deep clone.
     * @returns {Object} Returns the initialized clone.
     */
    function initCloneByTag(object, tag, isDeep) {
      var Ctor = object.constructor;
      switch (tag) {
        case arrayBufferTag:
          return cloneArrayBuffer(object);

        case boolTag:
        case dateTag:
          return new Ctor(+object);

        case dataViewTag:
          return cloneDataView(object, isDeep);

        case float32Tag: case float64Tag:
        case int8Tag: case int16Tag: case int32Tag:
        case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag:
          return cloneTypedArray(object, isDeep);

        case mapTag:
          return new Ctor;

        case numberTag:
        case stringTag:
          return new Ctor(object);

        case regexpTag:
          return cloneRegExp(object);

        case setTag:
          return new Ctor;

        case symbolTag:
          return cloneSymbol(object);
      }
    }

    /**
     * Inserts wrapper `details` in a comment at the top of the `source` body.
     *
     * @private
     * @param {string} source The source to modify.
     * @returns {Array} details The details to insert.
     * @returns {string} Returns the modified source.
     */
    function insertWrapDetails(source, details) {
      var length = details.length;
      if (!length) {
        return source;
      }
      var lastIndex = length - 1;
      details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex];
      details = details.join(length > 2 ? ', ' : ' ');
      return source.replace(reWrapComment, '{\n/* [wrapped with ' + details + '] */\n');
    }

    /**
     * Checks if `value` is a flattenable `arguments` object or array.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is flattenable, else `false`.
     */
    function isFlattenable(value) {
      return isArray(value) || isArguments(value) ||
        !!(spreadableSymbol && value && value[spreadableSymbol]);
    }

    /**
     * Checks if `value` is a valid array-like index.
     *
     * @private
     * @param {*} value The value to check.
     * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
     * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
     */
    function isIndex(value, length) {
      var type = typeof value;
      length = length == null ? MAX_SAFE_INTEGER : length;

      return !!length &&
        (type == 'number' ||
          (type != 'symbol' && reIsUint.test(value))) &&
            (value > -1 && value % 1 == 0 && value < length);
    }

    /**
     * Checks if the given arguments are from an iteratee call.
     *
     * @private
     * @param {*} value The potential iteratee value argument.
     * @param {*} index The potential iteratee index or key argument.
     * @param {*} object The potential iteratee object argument.
     * @returns {boolean} Returns `true` if the arguments are from an iteratee call,
     *  else `false`.
     */
    function isIterateeCall(value, index, object) {
      if (!isObject(object)) {
        return false;
      }
      var type = typeof index;
      if (type == 'number'
            ? (isArrayLike(object) && isIndex(index, object.length))
            : (type == 'string' && index in object)
          ) {
        return eq(object[index], value);
      }
      return false;
    }

    /**
     * Checks if `value` is a property name and not a property path.
     *
     * @private
     * @param {*} value The value to check.
     * @param {Object} [object] The object to query keys on.
     * @returns {boolean} Returns `true` if `value` is a property name, else `false`.
     */
    function isKey(value, object) {
      if (isArray(value)) {
        return false;
      }
      var type = typeof value;
      if (type == 'number' || type == 'symbol' || type == 'boolean' ||
          value == null || isSymbol(value)) {
        return true;
      }
      return reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||
        (object != null && value in Object(object));
    }

    /**
     * Checks if `value` is suitable for use as unique object key.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is suitable, else `false`.
     */
    function isKeyable(value) {
      var type = typeof value;
      return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')
        ? (value !== '__proto__')
        : (value === null);
    }

    /**
     * Checks if `func` has a lazy counterpart.
     *
     * @private
     * @param {Function} func The function to check.
     * @returns {boolean} Returns `true` if `func` has a lazy counterpart,
     *  else `false`.
     */
    function isLaziable(func) {
      var funcName = getFuncName(func),
          other = lodash[funcName];

      if (typeof other != 'function' || !(funcName in LazyWrapper.prototype)) {
        return false;
      }
      if (func === other) {
        return true;
      }
      var data = getData(other);
      return !!data && func === data[0];
    }

    /**
     * Checks if `func` has its source masked.
     *
     * @private
     * @param {Function} func The function to check.
     * @returns {boolean} Returns `true` if `func` is masked, else `false`.
     */
    function isMasked(func) {
      return !!maskSrcKey && (maskSrcKey in func);
    }

    /**
     * Checks if `func` is capable of being masked.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `func` is maskable, else `false`.
     */
    var isMaskable = coreJsData ? isFunction : stubFalse;

    /**
     * Checks if `value` is likely a prototype object.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.
     */
    function isPrototype(value) {
      var Ctor = value && value.constructor,
          proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;

      return value === proto;
    }

    /**
     * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` if suitable for strict
     *  equality comparisons, else `false`.
     */
    function isStrictComparable(value) {
      return value === value && !isObject(value);
    }

    /**
     * A specialized version of `matchesProperty` for source values suitable
     * for strict equality comparisons, i.e. `===`.
     *
     * @private
     * @param {string} key The key of the property to get.
     * @param {*} srcValue The value to match.
     * @returns {Function} Returns the new spec function.
     */
    function matchesStrictComparable(key, srcValue) {
      return function(object) {
        if (object == null) {
          return false;
        }
        return object[key] === srcValue &&
          (srcValue !== undefined || (key in Object(object)));
      };
    }

    /**
     * A specialized version of `_.memoize` which clears the memoized function's
     * cache when it exceeds `MAX_MEMOIZE_SIZE`.
     *
     * @private
     * @param {Function} func The function to have its output memoized.
     * @returns {Function} Returns the new memoized function.
     */
    function memoizeCapped(func) {
      var result = memoize(func, function(key) {
        if (cache.size === MAX_MEMOIZE_SIZE) {
          cache.clear();
        }
        return key;
      });

      var cache = result.cache;
      return result;
    }

    /**
     * Merges the function metadata of `source` into `data`.
     *
     * Merging metadata reduces the number of wrappers used to invoke a function.
     * This is possible because methods like `_.bind`, `_.curry`, and `_.partial`
     * may be applied regardless of execution order. Methods like `_.ary` and
     * `_.rearg` modify function arguments, making the order in which they are
     * executed important, preventing the merging of metadata. However, we make
     * an exception for a safe combined case where curried functions have `_.ary`
     * and or `_.rearg` applied.
     *
     * @private
     * @param {Array} data The destination metadata.
     * @param {Array} source The source metadata.
     * @returns {Array} Returns `data`.
     */
    function mergeData(data, source) {
      var bitmask = data[1],
          srcBitmask = source[1],
          newBitmask = bitmask | srcBitmask,
          isCommon = newBitmask < (WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG | WRAP_ARY_FLAG);

      var isCombo =
        ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_CURRY_FLAG)) ||
        ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_REARG_FLAG) && (data[7].length <= source[8])) ||
        ((srcBitmask == (WRAP_ARY_FLAG | WRAP_REARG_FLAG)) && (source[7].length <= source[8]) && (bitmask == WRAP_CURRY_FLAG));

      // Exit early if metadata can't be merged.
      if (!(isCommon || isCombo)) {
        return data;
      }
      // Use source `thisArg` if available.
      if (srcBitmask & WRAP_BIND_FLAG) {
        data[2] = source[2];
        // Set when currying a bound function.
        newBitmask |= bitmask & WRAP_BIND_FLAG ? 0 : WRAP_CURRY_BOUND_FLAG;
      }
      // Compose partial arguments.
      var value = source[3];
      if (value) {
        var partials = data[3];
        data[3] = partials ? composeArgs(partials, value, source[4]) : value;
        data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : source[4];
      }
      // Compose partial right arguments.
      value = source[5];
      if (value) {
        partials = data[5];
        data[5] = partials ? composeArgsRight(partials, value, source[6]) : value;
        data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : source[6];
      }
      // Use source `argPos` if available.
      value = source[7];
      if (value) {
        data[7] = value;
      }
      // Use source `ary` if it's smaller.
      if (srcBitmask & WRAP_ARY_FLAG) {
        data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]);
      }
      // Use source `arity` if one is not provided.
      if (data[9] == null) {
        data[9] = source[9];
      }
      // Use source `func` and merge bitmasks.
      data[0] = source[0];
      data[1] = newBitmask;

      return data;
    }

    /**
     * This function is like
     * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
     * except that it includes inherited enumerable properties.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names.
     */
    function nativeKeysIn(object) {
      var result = [];
      if (object != null) {
        for (var key in Object(object)) {
          result.push(key);
        }
      }
      return result;
    }

    /**
     * Converts `value` to a string using `Object.prototype.toString`.
     *
     * @private
     * @param {*} value The value to convert.
     * @returns {string} Returns the converted string.
     */
    function objectToString(value) {
      return nativeObjectToString.call(value);
    }

    /**
     * A specialized version of `baseRest` which transforms the rest array.
     *
     * @private
     * @param {Function} func The function to apply a rest parameter to.
     * @param {number} [start=func.length-1] The start position of the rest parameter.
     * @param {Function} transform The rest array transform.
     * @returns {Function} Returns the new function.
     */
    function overRest(func, start, transform) {
      start = nativeMax(start === undefined ? (func.length - 1) : start, 0);
      return function() {
        var args = arguments,
            index = -1,
            length = nativeMax(args.length - start, 0),
            array = Array(length);

        while (++index < length) {
          array[index] = args[start + index];
        }
        index = -1;
        var otherArgs = Array(start + 1);
        while (++index < start) {
          otherArgs[index] = args[index];
        }
        otherArgs[start] = transform(array);
        return apply(func, this, otherArgs);
      };
    }

    /**
     * Gets the parent value at `path` of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @param {Array} path The path to get the parent value of.
     * @returns {*} Returns the parent value.
     */
    function parent(object, path) {
      return path.length < 2 ? object : baseGet(object, baseSlice(path, 0, -1));
    }

    /**
     * Reorder `array` according to the specified indexes where the element at
     * the first index is assigned as the first element, the element at
     * the second index is assigned as the second element, and so on.
     *
     * @private
     * @param {Array} array The array to reorder.
     * @param {Array} indexes The arranged array indexes.
     * @returns {Array} Returns `array`.
     */
    function reorder(array, indexes) {
      var arrLength = array.length,
          length = nativeMin(indexes.length, arrLength),
          oldArray = copyArray(array);

      while (length--) {
        var index = indexes[length];
        array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined;
      }
      return array;
    }

    /**
     * Gets the value at `key`, unless `key` is "__proto__" or "constructor".
     *
     * @private
     * @param {Object} object The object to query.
     * @param {string} key The key of the property to get.
     * @returns {*} Returns the property value.
     */
    function safeGet(object, key) {
      if (key === 'constructor' && typeof object[key] === 'function') {
        return;
      }

      if (key == '__proto__') {
        return;
      }

      return object[key];
    }

    /**
     * Sets metadata for `func`.
     *
     * **Note:** If this function becomes hot, i.e. is invoked a lot in a short
     * period of time, it will trip its breaker and transition to an identity
     * function to avoid garbage collection pauses in V8. See
     * [V8 issue 2070](https://bugs.chromium.org/p/v8/issues/detail?id=2070)
     * for more details.
     *
     * @private
     * @param {Function} func The function to associate metadata with.
     * @param {*} data The metadata.
     * @returns {Function} Returns `func`.
     */
    var setData = shortOut(baseSetData);

    /**
     * A simple wrapper around the global [`setTimeout`](https://mdn.io/setTimeout).
     *
     * @private
     * @param {Function} func The function to delay.
     * @param {number} wait The number of milliseconds to delay invocation.
     * @returns {number|Object} Returns the timer id or timeout object.
     */
    var setTimeout = ctxSetTimeout || function(func, wait) {
      return root.setTimeout(func, wait);
    };

    /**
     * Sets the `toString` method of `func` to return `string`.
     *
     * @private
     * @param {Function} func The function to modify.
     * @param {Function} string The `toString` result.
     * @returns {Function} Returns `func`.
     */
    var setToString = shortOut(baseSetToString);

    /**
     * Sets the `toString` method of `wrapper` to mimic the source of `reference`
     * with wrapper details in a comment at the top of the source body.
     *
     * @private
     * @param {Function} wrapper The function to modify.
     * @param {Function} reference The reference function.
     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
     * @returns {Function} Returns `wrapper`.
     */
    function setWrapToString(wrapper, reference, bitmask) {
      var source = (reference + '');
      return setToString(wrapper, insertWrapDetails(source, updateWrapDetails(getWrapDetails(source), bitmask)));
    }

    /**
     * Creates a function that'll short out and invoke `identity` instead
     * of `func` when it's called `HOT_COUNT` or more times in `HOT_SPAN`
     * milliseconds.
     *
     * @private
     * @param {Function} func The function to restrict.
     * @returns {Function} Returns the new shortable function.
     */
    function shortOut(func) {
      var count = 0,
          lastCalled = 0;

      return function() {
        var stamp = nativeNow(),
            remaining = HOT_SPAN - (stamp - lastCalled);

        lastCalled = stamp;
        if (remaining > 0) {
          if (++count >= HOT_COUNT) {
            return arguments[0];
          }
        } else {
          count = 0;
        }
        return func.apply(undefined, arguments);
      };
    }

    /**
     * A specialized version of `_.shuffle` which mutates and sets the size of `array`.
     *
     * @private
     * @param {Array} array The array to shuffle.
     * @param {number} [size=array.length] The size of `array`.
     * @returns {Array} Returns `array`.
     */
    function shuffleSelf(array, size) {
      var index = -1,
          length = array.length,
          lastIndex = length - 1;

      size = size === undefined ? length : size;
      while (++index < size) {
        var rand = baseRandom(index, lastIndex),
            value = array[rand];

        array[rand] = array[index];
        array[index] = value;
      }
      array.length = size;
      return array;
    }

    /**
     * Converts `string` to a property path array.
     *
     * @private
     * @param {string} string The string to convert.
     * @returns {Array} Returns the property path array.
     */
    var stringToPath = memoizeCapped(function(string) {
      var result = [];
      if (string.charCodeAt(0) === 46 /* . */) {
        result.push('');
      }
      string.replace(rePropName, function(match, number, quote, subString) {
        result.push(quote ? subString.replace(reEscapeChar, '$1') : (number || match));
      });
      return result;
    });

    /**
     * Converts `value` to a string key if it's not a string or symbol.
     *
     * @private
     * @param {*} value The value to inspect.
     * @returns {string|symbol} Returns the key.
     */
    function toKey(value) {
      if (typeof value == 'string' || isSymbol(value)) {
        return value;
      }
      var result = (value + '');
      return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
    }

    /**
     * Converts `func` to its source code.
     *
     * @private
     * @param {Function} func The function to convert.
     * @returns {string} Returns the source code.
     */
    function toSource(func) {
      if (func != null) {
        try {
          return funcToString.call(func);
        } catch (e) {}
        try {
          return (func + '');
        } catch (e) {}
      }
      return '';
    }

    /**
     * Updates wrapper `details` based on `bitmask` flags.
     *
     * @private
     * @returns {Array} details The details to modify.
     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
     * @returns {Array} Returns `details`.
     */
    function updateWrapDetails(details, bitmask) {
      arrayEach(wrapFlags, function(pair) {
        var value = '_.' + pair[0];
        if ((bitmask & pair[1]) && !arrayIncludes(details, value)) {
          details.push(value);
        }
      });
      return details.sort();
    }

    /**
     * Creates a clone of `wrapper`.
     *
     * @private
     * @param {Object} wrapper The wrapper to clone.
     * @returns {Object} Returns the cloned wrapper.
     */
    function wrapperClone(wrapper) {
      if (wrapper instanceof LazyWrapper) {
        return wrapper.clone();
      }
      var result = new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__);
      result.__actions__ = copyArray(wrapper.__actions__);
      result.__index__  = wrapper.__index__;
      result.__values__ = wrapper.__values__;
      return result;
    }

    /*------------------------------------------------------------------------*/

    /**
     * Creates an array of elements split into groups the length of `size`.
     * If `array` can't be split evenly, the final chunk will be the remaining
     * elements.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to process.
     * @param {number} [size=1] The length of each chunk
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Array} Returns the new array of chunks.
     * @example
     *
     * _.chunk(['a', 'b', 'c', 'd'], 2);
     * // => [['a', 'b'], ['c', 'd']]
     *
     * _.chunk(['a', 'b', 'c', 'd'], 3);
     * // => [['a', 'b', 'c'], ['d']]
     */
    function chunk(array, size, guard) {
      if ((guard ? isIterateeCall(array, size, guard) : size === undefined)) {
        size = 1;
      } else {
        size = nativeMax(toInteger(size), 0);
      }
      var length = array == null ? 0 : array.length;
      if (!length || size < 1) {
        return [];
      }
      var index = 0,
          resIndex = 0,
          result = Array(nativeCeil(length / size));

      while (index < length) {
        result[resIndex++] = baseSlice(array, index, (index += size));
      }
      return result;
    }

    /**
     * Creates an array with all falsey values removed. The values `false`, `null`,
     * `0`, `""`, `undefined`, and `NaN` are falsey.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to compact.
     * @returns {Array} Returns the new array of filtered values.
     * @example
     *
     * _.compact([0, 1, false, 2, '', 3]);
     * // => [1, 2, 3]
     */
    function compact(array) {
      var index = -1,
          length = array == null ? 0 : array.length,
          resIndex = 0,
          result = [];

      while (++index < length) {
        var value = array[index];
        if (value) {
          result[resIndex++] = value;
        }
      }
      return result;
    }

    /**
     * Creates a new array concatenating `array` with any additional arrays
     * and/or values.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to concatenate.
     * @param {...*} [values] The values to concatenate.
     * @returns {Array} Returns the new concatenated array.
     * @example
     *
     * var array = [1];
     * var other = _.concat(array, 2, [3], [[4]]);
     *
     * console.log(other);
     * // => [1, 2, 3, [4]]
     *
     * console.log(array);
     * // => [1]
     */
    function concat() {
      var length = arguments.length;
      if (!length) {
        return [];
      }
      var args = Array(length - 1),
          array = arguments[0],
          index = length;

      while (index--) {
        args[index - 1] = arguments[index];
      }
      return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1));
    }

    /**
     * Creates an array of `array` values not included in the other given arrays
     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons. The order and references of result values are
     * determined by the first array.
     *
     * **Note:** Unlike `_.pullAll`, this method returns a new array.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {...Array} [values] The values to exclude.
     * @returns {Array} Returns the new array of filtered values.
     * @see _.without, _.xor
     * @example
     *
     * _.difference([2, 1], [2, 3]);
     * // => [1]
     */
    var difference = baseRest(function(array, values) {
      return isArrayLikeObject(array)
        ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true))
        : [];
    });

    /**
     * This method is like `_.difference` except that it accepts `iteratee` which
     * is invoked for each element of `array` and `values` to generate the criterion
     * by which they're compared. The order and references of result values are
     * determined by the first array. The iteratee is invoked with one argument:
     * (value).
     *
     * **Note:** Unlike `_.pullAllBy`, this method returns a new array.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {...Array} [values] The values to exclude.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {Array} Returns the new array of filtered values.
     * @example
     *
     * _.differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor);
     * // => [1.2]
     *
     * // The `_.property` iteratee shorthand.
     * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x');
     * // => [{ 'x': 2 }]
     */
    var differenceBy = baseRest(function(array, values) {
      var iteratee = last(values);
      if (isArrayLikeObject(iteratee)) {
        iteratee = undefined;
      }
      return isArrayLikeObject(array)
        ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), getIteratee(iteratee, 2))
        : [];
    });

    /**
     * This method is like `_.difference` except that it accepts `comparator`
     * which is invoked to compare elements of `array` to `values`. The order and
     * references of result values are determined by the first array. The comparator
     * is invoked with two arguments: (arrVal, othVal).
     *
     * **Note:** Unlike `_.pullAllWith`, this method returns a new array.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {...Array} [values] The values to exclude.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new array of filtered values.
     * @example
     *
     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
     *
     * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual);
     * // => [{ 'x': 2, 'y': 1 }]
     */
    var differenceWith = baseRest(function(array, values) {
      var comparator = last(values);
      if (isArrayLikeObject(comparator)) {
        comparator = undefined;
      }
      return isArrayLikeObject(array)
        ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined, comparator)
        : [];
    });

    /**
     * Creates a slice of `array` with `n` elements dropped from the beginning.
     *
     * @static
     * @memberOf _
     * @since 0.5.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {number} [n=1] The number of elements to drop.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.drop([1, 2, 3]);
     * // => [2, 3]
     *
     * _.drop([1, 2, 3], 2);
     * // => [3]
     *
     * _.drop([1, 2, 3], 5);
     * // => []
     *
     * _.drop([1, 2, 3], 0);
     * // => [1, 2, 3]
     */
    function drop(array, n, guard) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return [];
      }
      n = (guard || n === undefined) ? 1 : toInteger(n);
      return baseSlice(array, n < 0 ? 0 : n, length);
    }

    /**
     * Creates a slice of `array` with `n` elements dropped from the end.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {number} [n=1] The number of elements to drop.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.dropRight([1, 2, 3]);
     * // => [1, 2]
     *
     * _.dropRight([1, 2, 3], 2);
     * // => [1]
     *
     * _.dropRight([1, 2, 3], 5);
     * // => []
     *
     * _.dropRight([1, 2, 3], 0);
     * // => [1, 2, 3]
     */
    function dropRight(array, n, guard) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return [];
      }
      n = (guard || n === undefined) ? 1 : toInteger(n);
      n = length - n;
      return baseSlice(array, 0, n < 0 ? 0 : n);
    }

    /**
     * Creates a slice of `array` excluding elements dropped from the end.
     * Elements are dropped until `predicate` returns falsey. The predicate is
     * invoked with three arguments: (value, index, array).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'active': true },
     *   { 'user': 'fred',    'active': false },
     *   { 'user': 'pebbles', 'active': false }
     * ];
     *
     * _.dropRightWhile(users, function(o) { return !o.active; });
     * // => objects for ['barney']
     *
     * // The `_.matches` iteratee shorthand.
     * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false });
     * // => objects for ['barney', 'fred']
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.dropRightWhile(users, ['active', false]);
     * // => objects for ['barney']
     *
     * // The `_.property` iteratee shorthand.
     * _.dropRightWhile(users, 'active');
     * // => objects for ['barney', 'fred', 'pebbles']
     */
    function dropRightWhile(array, predicate) {
      return (array && array.length)
        ? baseWhile(array, getIteratee(predicate, 3), true, true)
        : [];
    }

    /**
     * Creates a slice of `array` excluding elements dropped from the beginning.
     * Elements are dropped until `predicate` returns falsey. The predicate is
     * invoked with three arguments: (value, index, array).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'active': false },
     *   { 'user': 'fred',    'active': false },
     *   { 'user': 'pebbles', 'active': true }
     * ];
     *
     * _.dropWhile(users, function(o) { return !o.active; });
     * // => objects for ['pebbles']
     *
     * // The `_.matches` iteratee shorthand.
     * _.dropWhile(users, { 'user': 'barney', 'active': false });
     * // => objects for ['fred', 'pebbles']
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.dropWhile(users, ['active', false]);
     * // => objects for ['pebbles']
     *
     * // The `_.property` iteratee shorthand.
     * _.dropWhile(users, 'active');
     * // => objects for ['barney', 'fred', 'pebbles']
     */
    function dropWhile(array, predicate) {
      return (array && array.length)
        ? baseWhile(array, getIteratee(predicate, 3), true)
        : [];
    }

    /**
     * Fills elements of `array` with `value` from `start` up to, but not
     * including, `end`.
     *
     * **Note:** This method mutates `array`.
     *
     * @static
     * @memberOf _
     * @since 3.2.0
     * @category Array
     * @param {Array} array The array to fill.
     * @param {*} value The value to fill `array` with.
     * @param {number} [start=0] The start position.
     * @param {number} [end=array.length] The end position.
     * @returns {Array} Returns `array`.
     * @example
     *
     * var array = [1, 2, 3];
     *
     * _.fill(array, 'a');
     * console.log(array);
     * // => ['a', 'a', 'a']
     *
     * _.fill(Array(3), 2);
     * // => [2, 2, 2]
     *
     * _.fill([4, 6, 8, 10], '*', 1, 3);
     * // => [4, '*', '*', 10]
     */
    function fill(array, value, start, end) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return [];
      }
      if (start && typeof start != 'number' && isIterateeCall(array, value, start)) {
        start = 0;
        end = length;
      }
      return baseFill(array, value, start, end);
    }

    /**
     * This method is like `_.find` except that it returns the index of the first
     * element `predicate` returns truthy for instead of the element itself.
     *
     * @static
     * @memberOf _
     * @since 1.1.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @param {number} [fromIndex=0] The index to search from.
     * @returns {number} Returns the index of the found element, else `-1`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'active': false },
     *   { 'user': 'fred',    'active': false },
     *   { 'user': 'pebbles', 'active': true }
     * ];
     *
     * _.findIndex(users, function(o) { return o.user == 'barney'; });
     * // => 0
     *
     * // The `_.matches` iteratee shorthand.
     * _.findIndex(users, { 'user': 'fred', 'active': false });
     * // => 1
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.findIndex(users, ['active', false]);
     * // => 0
     *
     * // The `_.property` iteratee shorthand.
     * _.findIndex(users, 'active');
     * // => 2
     */
    function findIndex(array, predicate, fromIndex) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return -1;
      }
      var index = fromIndex == null ? 0 : toInteger(fromIndex);
      if (index < 0) {
        index = nativeMax(length + index, 0);
      }
      return baseFindIndex(array, getIteratee(predicate, 3), index);
    }

    /**
     * This method is like `_.findIndex` except that it iterates over elements
     * of `collection` from right to left.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @param {number} [fromIndex=array.length-1] The index to search from.
     * @returns {number} Returns the index of the found element, else `-1`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'active': true },
     *   { 'user': 'fred',    'active': false },
     *   { 'user': 'pebbles', 'active': false }
     * ];
     *
     * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; });
     * // => 2
     *
     * // The `_.matches` iteratee shorthand.
     * _.findLastIndex(users, { 'user': 'barney', 'active': true });
     * // => 0
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.findLastIndex(users, ['active', false]);
     * // => 2
     *
     * // The `_.property` iteratee shorthand.
     * _.findLastIndex(users, 'active');
     * // => 0
     */
    function findLastIndex(array, predicate, fromIndex) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return -1;
      }
      var index = length - 1;
      if (fromIndex !== undefined) {
        index = toInteger(fromIndex);
        index = fromIndex < 0
          ? nativeMax(length + index, 0)
          : nativeMin(index, length - 1);
      }
      return baseFindIndex(array, getIteratee(predicate, 3), index, true);
    }

    /**
     * Flattens `array` a single level deep.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to flatten.
     * @returns {Array} Returns the new flattened array.
     * @example
     *
     * _.flatten([1, [2, [3, [4]], 5]]);
     * // => [1, 2, [3, [4]], 5]
     */
    function flatten(array) {
      var length = array == null ? 0 : array.length;
      return length ? baseFlatten(array, 1) : [];
    }

    /**
     * Recursively flattens `array`.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to flatten.
     * @returns {Array} Returns the new flattened array.
     * @example
     *
     * _.flattenDeep([1, [2, [3, [4]], 5]]);
     * // => [1, 2, 3, 4, 5]
     */
    function flattenDeep(array) {
      var length = array == null ? 0 : array.length;
      return length ? baseFlatten(array, INFINITY) : [];
    }

    /**
     * Recursively flatten `array` up to `depth` times.
     *
     * @static
     * @memberOf _
     * @since 4.4.0
     * @category Array
     * @param {Array} array The array to flatten.
     * @param {number} [depth=1] The maximum recursion depth.
     * @returns {Array} Returns the new flattened array.
     * @example
     *
     * var array = [1, [2, [3, [4]], 5]];
     *
     * _.flattenDepth(array, 1);
     * // => [1, 2, [3, [4]], 5]
     *
     * _.flattenDepth(array, 2);
     * // => [1, 2, 3, [4], 5]
     */
    function flattenDepth(array, depth) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return [];
      }
      depth = depth === undefined ? 1 : toInteger(depth);
      return baseFlatten(array, depth);
    }

    /**
     * The inverse of `_.toPairs`; this method returns an object composed
     * from key-value `pairs`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} pairs The key-value pairs.
     * @returns {Object} Returns the new object.
     * @example
     *
     * _.fromPairs([['a', 1], ['b', 2]]);
     * // => { 'a': 1, 'b': 2 }
     */
    function fromPairs(pairs) {
      var index = -1,
          length = pairs == null ? 0 : pairs.length,
          result = {};

      while (++index < length) {
        var pair = pairs[index];
        result[pair[0]] = pair[1];
      }
      return result;
    }

    /**
     * Gets the first element of `array`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @alias first
     * @category Array
     * @param {Array} array The array to query.
     * @returns {*} Returns the first element of `array`.
     * @example
     *
     * _.head([1, 2, 3]);
     * // => 1
     *
     * _.head([]);
     * // => undefined
     */
    function head(array) {
      return (array && array.length) ? array[0] : undefined;
    }

    /**
     * Gets the index at which the first occurrence of `value` is found in `array`
     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons. If `fromIndex` is negative, it's used as the
     * offset from the end of `array`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {*} value The value to search for.
     * @param {number} [fromIndex=0] The index to search from.
     * @returns {number} Returns the index of the matched value, else `-1`.
     * @example
     *
     * _.indexOf([1, 2, 1, 2], 2);
     * // => 1
     *
     * // Search from the `fromIndex`.
     * _.indexOf([1, 2, 1, 2], 2, 2);
     * // => 3
     */
    function indexOf(array, value, fromIndex) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return -1;
      }
      var index = fromIndex == null ? 0 : toInteger(fromIndex);
      if (index < 0) {
        index = nativeMax(length + index, 0);
      }
      return baseIndexOf(array, value, index);
    }

    /**
     * Gets all but the last element of `array`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to query.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.initial([1, 2, 3]);
     * // => [1, 2]
     */
    function initial(array) {
      var length = array == null ? 0 : array.length;
      return length ? baseSlice(array, 0, -1) : [];
    }

    /**
     * Creates an array of unique values that are included in all given arrays
     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons. The order and references of result values are
     * determined by the first array.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @returns {Array} Returns the new array of intersecting values.
     * @example
     *
     * _.intersection([2, 1], [2, 3]);
     * // => [2]
     */
    var intersection = baseRest(function(arrays) {
      var mapped = arrayMap(arrays, castArrayLikeObject);
      return (mapped.length && mapped[0] === arrays[0])
        ? baseIntersection(mapped)
        : [];
    });

    /**
     * This method is like `_.intersection` except that it accepts `iteratee`
     * which is invoked for each element of each `arrays` to generate the criterion
     * by which they're compared. The order and references of result values are
     * determined by the first array. The iteratee is invoked with one argument:
     * (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {Array} Returns the new array of intersecting values.
     * @example
     *
     * _.intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor);
     * // => [2.1]
     *
     * // The `_.property` iteratee shorthand.
     * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
     * // => [{ 'x': 1 }]
     */
    var intersectionBy = baseRest(function(arrays) {
      var iteratee = last(arrays),
          mapped = arrayMap(arrays, castArrayLikeObject);

      if (iteratee === last(mapped)) {
        iteratee = undefined;
      } else {
        mapped.pop();
      }
      return (mapped.length && mapped[0] === arrays[0])
        ? baseIntersection(mapped, getIteratee(iteratee, 2))
        : [];
    });

    /**
     * This method is like `_.intersection` except that it accepts `comparator`
     * which is invoked to compare elements of `arrays`. The order and references
     * of result values are determined by the first array. The comparator is
     * invoked with two arguments: (arrVal, othVal).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new array of intersecting values.
     * @example
     *
     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
     * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
     *
     * _.intersectionWith(objects, others, _.isEqual);
     * // => [{ 'x': 1, 'y': 2 }]
     */
    var intersectionWith = baseRest(function(arrays) {
      var comparator = last(arrays),
          mapped = arrayMap(arrays, castArrayLikeObject);

      comparator = typeof comparator == 'function' ? comparator : undefined;
      if (comparator) {
        mapped.pop();
      }
      return (mapped.length && mapped[0] === arrays[0])
        ? baseIntersection(mapped, undefined, comparator)
        : [];
    });

    /**
     * Converts all elements in `array` into a string separated by `separator`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to convert.
     * @param {string} [separator=','] The element separator.
     * @returns {string} Returns the joined string.
     * @example
     *
     * _.join(['a', 'b', 'c'], '~');
     * // => 'a~b~c'
     */
    function join(array, separator) {
      return array == null ? '' : nativeJoin.call(array, separator);
    }

    /**
     * Gets the last element of `array`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to query.
     * @returns {*} Returns the last element of `array`.
     * @example
     *
     * _.last([1, 2, 3]);
     * // => 3
     */
    function last(array) {
      var length = array == null ? 0 : array.length;
      return length ? array[length - 1] : undefined;
    }

    /**
     * This method is like `_.indexOf` except that it iterates over elements of
     * `array` from right to left.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {*} value The value to search for.
     * @param {number} [fromIndex=array.length-1] The index to search from.
     * @returns {number} Returns the index of the matched value, else `-1`.
     * @example
     *
     * _.lastIndexOf([1, 2, 1, 2], 2);
     * // => 3
     *
     * // Search from the `fromIndex`.
     * _.lastIndexOf([1, 2, 1, 2], 2, 2);
     * // => 1
     */
    function lastIndexOf(array, value, fromIndex) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return -1;
      }
      var index = length;
      if (fromIndex !== undefined) {
        index = toInteger(fromIndex);
        index = index < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1);
      }
      return value === value
        ? strictLastIndexOf(array, value, index)
        : baseFindIndex(array, baseIsNaN, index, true);
    }

    /**
     * Gets the element at index `n` of `array`. If `n` is negative, the nth
     * element from the end is returned.
     *
     * @static
     * @memberOf _
     * @since 4.11.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {number} [n=0] The index of the element to return.
     * @returns {*} Returns the nth element of `array`.
     * @example
     *
     * var array = ['a', 'b', 'c', 'd'];
     *
     * _.nth(array, 1);
     * // => 'b'
     *
     * _.nth(array, -2);
     * // => 'c';
     */
    function nth(array, n) {
      return (array && array.length) ? baseNth(array, toInteger(n)) : undefined;
    }

    /**
     * Removes all given values from `array` using
     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons.
     *
     * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove`
     * to remove elements from an array by predicate.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Array
     * @param {Array} array The array to modify.
     * @param {...*} [values] The values to remove.
     * @returns {Array} Returns `array`.
     * @example
     *
     * var array = ['a', 'b', 'c', 'a', 'b', 'c'];
     *
     * _.pull(array, 'a', 'c');
     * console.log(array);
     * // => ['b', 'b']
     */
    var pull = baseRest(pullAll);

    /**
     * This method is like `_.pull` except that it accepts an array of values to remove.
     *
     * **Note:** Unlike `_.difference`, this method mutates `array`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to modify.
     * @param {Array} values The values to remove.
     * @returns {Array} Returns `array`.
     * @example
     *
     * var array = ['a', 'b', 'c', 'a', 'b', 'c'];
     *
     * _.pullAll(array, ['a', 'c']);
     * console.log(array);
     * // => ['b', 'b']
     */
    function pullAll(array, values) {
      return (array && array.length && values && values.length)
        ? basePullAll(array, values)
        : array;
    }

    /**
     * This method is like `_.pullAll` except that it accepts `iteratee` which is
     * invoked for each element of `array` and `values` to generate the criterion
     * by which they're compared. The iteratee is invoked with one argument: (value).
     *
     * **Note:** Unlike `_.differenceBy`, this method mutates `array`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to modify.
     * @param {Array} values The values to remove.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {Array} Returns `array`.
     * @example
     *
     * var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }];
     *
     * _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x');
     * console.log(array);
     * // => [{ 'x': 2 }]
     */
    function pullAllBy(array, values, iteratee) {
      return (array && array.length && values && values.length)
        ? basePullAll(array, values, getIteratee(iteratee, 2))
        : array;
    }

    /**
     * This method is like `_.pullAll` except that it accepts `comparator` which
     * is invoked to compare elements of `array` to `values`. The comparator is
     * invoked with two arguments: (arrVal, othVal).
     *
     * **Note:** Unlike `_.differenceWith`, this method mutates `array`.
     *
     * @static
     * @memberOf _
     * @since 4.6.0
     * @category Array
     * @param {Array} array The array to modify.
     * @param {Array} values The values to remove.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns `array`.
     * @example
     *
     * var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }];
     *
     * _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual);
     * console.log(array);
     * // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }]
     */
    function pullAllWith(array, values, comparator) {
      return (array && array.length && values && values.length)
        ? basePullAll(array, values, undefined, comparator)
        : array;
    }

    /**
     * Removes elements from `array` corresponding to `indexes` and returns an
     * array of removed elements.
     *
     * **Note:** Unlike `_.at`, this method mutates `array`.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to modify.
     * @param {...(number|number[])} [indexes] The indexes of elements to remove.
     * @returns {Array} Returns the new array of removed elements.
     * @example
     *
     * var array = ['a', 'b', 'c', 'd'];
     * var pulled = _.pullAt(array, [1, 3]);
     *
     * console.log(array);
     * // => ['a', 'c']
     *
     * console.log(pulled);
     * // => ['b', 'd']
     */
    var pullAt = flatRest(function(array, indexes) {
      var length = array == null ? 0 : array.length,
          result = baseAt(array, indexes);

      basePullAt(array, arrayMap(indexes, function(index) {
        return isIndex(index, length) ? +index : index;
      }).sort(compareAscending));

      return result;
    });

    /**
     * Removes all elements from `array` that `predicate` returns truthy for
     * and returns an array of the removed elements. The predicate is invoked
     * with three arguments: (value, index, array).
     *
     * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull`
     * to pull elements from an array by value.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Array
     * @param {Array} array The array to modify.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the new array of removed elements.
     * @example
     *
     * var array = [1, 2, 3, 4];
     * var evens = _.remove(array, function(n) {
     *   return n % 2 == 0;
     * });
     *
     * console.log(array);
     * // => [1, 3]
     *
     * console.log(evens);
     * // => [2, 4]
     */
    function remove(array, predicate) {
      var result = [];
      if (!(array && array.length)) {
        return result;
      }
      var index = -1,
          indexes = [],
          length = array.length;

      predicate = getIteratee(predicate, 3);
      while (++index < length) {
        var value = array[index];
        if (predicate(value, index, array)) {
          result.push(value);
          indexes.push(index);
        }
      }
      basePullAt(array, indexes);
      return result;
    }

    /**
     * Reverses `array` so that the first element becomes the last, the second
     * element becomes the second to last, and so on.
     *
     * **Note:** This method mutates `array` and is based on
     * [`Array#reverse`](https://mdn.io/Array/reverse).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to modify.
     * @returns {Array} Returns `array`.
     * @example
     *
     * var array = [1, 2, 3];
     *
     * _.reverse(array);
     * // => [3, 2, 1]
     *
     * console.log(array);
     * // => [3, 2, 1]
     */
    function reverse(array) {
      return array == null ? array : nativeReverse.call(array);
    }

    /**
     * Creates a slice of `array` from `start` up to, but not including, `end`.
     *
     * **Note:** This method is used instead of
     * [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are
     * returned.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to slice.
     * @param {number} [start=0] The start position.
     * @param {number} [end=array.length] The end position.
     * @returns {Array} Returns the slice of `array`.
     */
    function slice(array, start, end) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return [];
      }
      if (end && typeof end != 'number' && isIterateeCall(array, start, end)) {
        start = 0;
        end = length;
      }
      else {
        start = start == null ? 0 : toInteger(start);
        end = end === undefined ? length : toInteger(end);
      }
      return baseSlice(array, start, end);
    }

    /**
     * Uses a binary search to determine the lowest index at which `value`
     * should be inserted into `array` in order to maintain its sort order.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The sorted array to inspect.
     * @param {*} value The value to evaluate.
     * @returns {number} Returns the index at which `value` should be inserted
     *  into `array`.
     * @example
     *
     * _.sortedIndex([30, 50], 40);
     * // => 1
     */
    function sortedIndex(array, value) {
      return baseSortedIndex(array, value);
    }

    /**
     * This method is like `_.sortedIndex` except that it accepts `iteratee`
     * which is invoked for `value` and each element of `array` to compute their
     * sort ranking. The iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The sorted array to inspect.
     * @param {*} value The value to evaluate.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {number} Returns the index at which `value` should be inserted
     *  into `array`.
     * @example
     *
     * var objects = [{ 'x': 4 }, { 'x': 5 }];
     *
     * _.sortedIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });
     * // => 0
     *
     * // The `_.property` iteratee shorthand.
     * _.sortedIndexBy(objects, { 'x': 4 }, 'x');
     * // => 0
     */
    function sortedIndexBy(array, value, iteratee) {
      return baseSortedIndexBy(array, value, getIteratee(iteratee, 2));
    }

    /**
     * This method is like `_.indexOf` except that it performs a binary
     * search on a sorted `array`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {*} value The value to search for.
     * @returns {number} Returns the index of the matched value, else `-1`.
     * @example
     *
     * _.sortedIndexOf([4, 5, 5, 5, 6], 5);
     * // => 1
     */
    function sortedIndexOf(array, value) {
      var length = array == null ? 0 : array.length;
      if (length) {
        var index = baseSortedIndex(array, value);
        if (index < length && eq(array[index], value)) {
          return index;
        }
      }
      return -1;
    }

    /**
     * This method is like `_.sortedIndex` except that it returns the highest
     * index at which `value` should be inserted into `array` in order to
     * maintain its sort order.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The sorted array to inspect.
     * @param {*} value The value to evaluate.
     * @returns {number} Returns the index at which `value` should be inserted
     *  into `array`.
     * @example
     *
     * _.sortedLastIndex([4, 5, 5, 5, 6], 5);
     * // => 4
     */
    function sortedLastIndex(array, value) {
      return baseSortedIndex(array, value, true);
    }

    /**
     * This method is like `_.sortedLastIndex` except that it accepts `iteratee`
     * which is invoked for `value` and each element of `array` to compute their
     * sort ranking. The iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The sorted array to inspect.
     * @param {*} value The value to evaluate.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {number} Returns the index at which `value` should be inserted
     *  into `array`.
     * @example
     *
     * var objects = [{ 'x': 4 }, { 'x': 5 }];
     *
     * _.sortedLastIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });
     * // => 1
     *
     * // The `_.property` iteratee shorthand.
     * _.sortedLastIndexBy(objects, { 'x': 4 }, 'x');
     * // => 1
     */
    function sortedLastIndexBy(array, value, iteratee) {
      return baseSortedIndexBy(array, value, getIteratee(iteratee, 2), true);
    }

    /**
     * This method is like `_.lastIndexOf` except that it performs a binary
     * search on a sorted `array`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {*} value The value to search for.
     * @returns {number} Returns the index of the matched value, else `-1`.
     * @example
     *
     * _.sortedLastIndexOf([4, 5, 5, 5, 6], 5);
     * // => 3
     */
    function sortedLastIndexOf(array, value) {
      var length = array == null ? 0 : array.length;
      if (length) {
        var index = baseSortedIndex(array, value, true) - 1;
        if (eq(array[index], value)) {
          return index;
        }
      }
      return -1;
    }

    /**
     * This method is like `_.uniq` except that it's designed and optimized
     * for sorted arrays.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @returns {Array} Returns the new duplicate free array.
     * @example
     *
     * _.sortedUniq([1, 1, 2]);
     * // => [1, 2]
     */
    function sortedUniq(array) {
      return (array && array.length)
        ? baseSortedUniq(array)
        : [];
    }

    /**
     * This method is like `_.uniqBy` except that it's designed and optimized
     * for sorted arrays.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {Function} [iteratee] The iteratee invoked per element.
     * @returns {Array} Returns the new duplicate free array.
     * @example
     *
     * _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor);
     * // => [1.1, 2.3]
     */
    function sortedUniqBy(array, iteratee) {
      return (array && array.length)
        ? baseSortedUniq(array, getIteratee(iteratee, 2))
        : [];
    }

    /**
     * Gets all but the first element of `array`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to query.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.tail([1, 2, 3]);
     * // => [2, 3]
     */
    function tail(array) {
      var length = array == null ? 0 : array.length;
      return length ? baseSlice(array, 1, length) : [];
    }

    /**
     * Creates a slice of `array` with `n` elements taken from the beginning.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {number} [n=1] The number of elements to take.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.take([1, 2, 3]);
     * // => [1]
     *
     * _.take([1, 2, 3], 2);
     * // => [1, 2]
     *
     * _.take([1, 2, 3], 5);
     * // => [1, 2, 3]
     *
     * _.take([1, 2, 3], 0);
     * // => []
     */
    function take(array, n, guard) {
      if (!(array && array.length)) {
        return [];
      }
      n = (guard || n === undefined) ? 1 : toInteger(n);
      return baseSlice(array, 0, n < 0 ? 0 : n);
    }

    /**
     * Creates a slice of `array` with `n` elements taken from the end.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {number} [n=1] The number of elements to take.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.takeRight([1, 2, 3]);
     * // => [3]
     *
     * _.takeRight([1, 2, 3], 2);
     * // => [2, 3]
     *
     * _.takeRight([1, 2, 3], 5);
     * // => [1, 2, 3]
     *
     * _.takeRight([1, 2, 3], 0);
     * // => []
     */
    function takeRight(array, n, guard) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return [];
      }
      n = (guard || n === undefined) ? 1 : toInteger(n);
      n = length - n;
      return baseSlice(array, n < 0 ? 0 : n, length);
    }

    /**
     * Creates a slice of `array` with elements taken from the end. Elements are
     * taken until `predicate` returns falsey. The predicate is invoked with
     * three arguments: (value, index, array).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'active': true },
     *   { 'user': 'fred',    'active': false },
     *   { 'user': 'pebbles', 'active': false }
     * ];
     *
     * _.takeRightWhile(users, function(o) { return !o.active; });
     * // => objects for ['fred', 'pebbles']
     *
     * // The `_.matches` iteratee shorthand.
     * _.takeRightWhile(users, { 'user': 'pebbles', 'active': false });
     * // => objects for ['pebbles']
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.takeRightWhile(users, ['active', false]);
     * // => objects for ['fred', 'pebbles']
     *
     * // The `_.property` iteratee shorthand.
     * _.takeRightWhile(users, 'active');
     * // => []
     */
    function takeRightWhile(array, predicate) {
      return (array && array.length)
        ? baseWhile(array, getIteratee(predicate, 3), false, true)
        : [];
    }

    /**
     * Creates a slice of `array` with elements taken from the beginning. Elements
     * are taken until `predicate` returns falsey. The predicate is invoked with
     * three arguments: (value, index, array).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'active': false },
     *   { 'user': 'fred',    'active': false },
     *   { 'user': 'pebbles', 'active': true }
     * ];
     *
     * _.takeWhile(users, function(o) { return !o.active; });
     * // => objects for ['barney', 'fred']
     *
     * // The `_.matches` iteratee shorthand.
     * _.takeWhile(users, { 'user': 'barney', 'active': false });
     * // => objects for ['barney']
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.takeWhile(users, ['active', false]);
     * // => objects for ['barney', 'fred']
     *
     * // The `_.property` iteratee shorthand.
     * _.takeWhile(users, 'active');
     * // => []
     */
    function takeWhile(array, predicate) {
      return (array && array.length)
        ? baseWhile(array, getIteratee(predicate, 3))
        : [];
    }

    /**
     * Creates an array of unique values, in order, from all given arrays using
     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @returns {Array} Returns the new array of combined values.
     * @example
     *
     * _.union([2], [1, 2]);
     * // => [2, 1]
     */
    var union = baseRest(function(arrays) {
      return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true));
    });

    /**
     * This method is like `_.union` except that it accepts `iteratee` which is
     * invoked for each element of each `arrays` to generate the criterion by
     * which uniqueness is computed. Result values are chosen from the first
     * array in which the value occurs. The iteratee is invoked with one argument:
     * (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {Array} Returns the new array of combined values.
     * @example
     *
     * _.unionBy([2.1], [1.2, 2.3], Math.floor);
     * // => [2.1, 1.2]
     *
     * // The `_.property` iteratee shorthand.
     * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
     * // => [{ 'x': 1 }, { 'x': 2 }]
     */
    var unionBy = baseRest(function(arrays) {
      var iteratee = last(arrays);
      if (isArrayLikeObject(iteratee)) {
        iteratee = undefined;
      }
      return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), getIteratee(iteratee, 2));
    });

    /**
     * This method is like `_.union` except that it accepts `comparator` which
     * is invoked to compare elements of `arrays`. Result values are chosen from
     * the first array in which the value occurs. The comparator is invoked
     * with two arguments: (arrVal, othVal).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new array of combined values.
     * @example
     *
     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
     * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
     *
     * _.unionWith(objects, others, _.isEqual);
     * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]
     */
    var unionWith = baseRest(function(arrays) {
      var comparator = last(arrays);
      comparator = typeof comparator == 'function' ? comparator : undefined;
      return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined, comparator);
    });

    /**
     * Creates a duplicate-free version of an array, using
     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons, in which only the first occurrence of each element
     * is kept. The order of result values is determined by the order they occur
     * in the array.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @returns {Array} Returns the new duplicate free array.
     * @example
     *
     * _.uniq([2, 1, 2]);
     * // => [2, 1]
     */
    function uniq(array) {
      return (array && array.length) ? baseUniq(array) : [];
    }

    /**
     * This method is like `_.uniq` except that it accepts `iteratee` which is
     * invoked for each element in `array` to generate the criterion by which
     * uniqueness is computed. The order of result values is determined by the
     * order they occur in the array. The iteratee is invoked with one argument:
     * (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {Array} Returns the new duplicate free array.
     * @example
     *
     * _.uniqBy([2.1, 1.2, 2.3], Math.floor);
     * // => [2.1, 1.2]
     *
     * // The `_.property` iteratee shorthand.
     * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');
     * // => [{ 'x': 1 }, { 'x': 2 }]
     */
    function uniqBy(array, iteratee) {
      return (array && array.length) ? baseUniq(array, getIteratee(iteratee, 2)) : [];
    }

    /**
     * This method is like `_.uniq` except that it accepts `comparator` which
     * is invoked to compare elements of `array`. The order of result values is
     * determined by the order they occur in the array.The comparator is invoked
     * with two arguments: (arrVal, othVal).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new duplicate free array.
     * @example
     *
     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 2 }];
     *
     * _.uniqWith(objects, _.isEqual);
     * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]
     */
    function uniqWith(array, comparator) {
      comparator = typeof comparator == 'function' ? comparator : undefined;
      return (array && array.length) ? baseUniq(array, undefined, comparator) : [];
    }

    /**
     * This method is like `_.zip` except that it accepts an array of grouped
     * elements and creates an array regrouping the elements to their pre-zip
     * configuration.
     *
     * @static
     * @memberOf _
     * @since 1.2.0
     * @category Array
     * @param {Array} array The array of grouped elements to process.
     * @returns {Array} Returns the new array of regrouped elements.
     * @example
     *
     * var zipped = _.zip(['a', 'b'], [1, 2], [true, false]);
     * // => [['a', 1, true], ['b', 2, false]]
     *
     * _.unzip(zipped);
     * // => [['a', 'b'], [1, 2], [true, false]]
     */
    function unzip(array) {
      if (!(array && array.length)) {
        return [];
      }
      var length = 0;
      array = arrayFilter(array, function(group) {
        if (isArrayLikeObject(group)) {
          length = nativeMax(group.length, length);
          return true;
        }
      });
      return baseTimes(length, function(index) {
        return arrayMap(array, baseProperty(index));
      });
    }

    /**
     * This method is like `_.unzip` except that it accepts `iteratee` to specify
     * how regrouped values should be combined. The iteratee is invoked with the
     * elements of each group: (...group).
     *
     * @static
     * @memberOf _
     * @since 3.8.0
     * @category Array
     * @param {Array} array The array of grouped elements to process.
     * @param {Function} [iteratee=_.identity] The function to combine
     *  regrouped values.
     * @returns {Array} Returns the new array of regrouped elements.
     * @example
     *
     * var zipped = _.zip([1, 2], [10, 20], [100, 200]);
     * // => [[1, 10, 100], [2, 20, 200]]
     *
     * _.unzipWith(zipped, _.add);
     * // => [3, 30, 300]
     */
    function unzipWith(array, iteratee) {
      if (!(array && array.length)) {
        return [];
      }
      var result = unzip(array);
      if (iteratee == null) {
        return result;
      }
      return arrayMap(result, function(group) {
        return apply(iteratee, undefined, group);
      });
    }

    /**
     * Creates an array excluding all given values using
     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons.
     *
     * **Note:** Unlike `_.pull`, this method returns a new array.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {...*} [values] The values to exclude.
     * @returns {Array} Returns the new array of filtered values.
     * @see _.difference, _.xor
     * @example
     *
     * _.without([2, 1, 2, 3], 1, 2);
     * // => [3]
     */
    var without = baseRest(function(array, values) {
      return isArrayLikeObject(array)
        ? baseDifference(array, values)
        : [];
    });

    /**
     * Creates an array of unique values that is the
     * [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference)
     * of the given arrays. The order of result values is determined by the order
     * they occur in the arrays.
     *
     * @static
     * @memberOf _
     * @since 2.4.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @returns {Array} Returns the new array of filtered values.
     * @see _.difference, _.without
     * @example
     *
     * _.xor([2, 1], [2, 3]);
     * // => [1, 3]
     */
    var xor = baseRest(function(arrays) {
      return baseXor(arrayFilter(arrays, isArrayLikeObject));
    });

    /**
     * This method is like `_.xor` except that it accepts `iteratee` which is
     * invoked for each element of each `arrays` to generate the criterion by
     * which by which they're compared. The order of result values is determined
     * by the order they occur in the arrays. The iteratee is invoked with one
     * argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {Array} Returns the new array of filtered values.
     * @example
     *
     * _.xorBy([2.1, 1.2], [2.3, 3.4], Math.floor);
     * // => [1.2, 3.4]
     *
     * // The `_.property` iteratee shorthand.
     * _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
     * // => [{ 'x': 2 }]
     */
    var xorBy = baseRest(function(arrays) {
      var iteratee = last(arrays);
      if (isArrayLikeObject(iteratee)) {
        iteratee = undefined;
      }
      return baseXor(arrayFilter(arrays, isArrayLikeObject), getIteratee(iteratee, 2));
    });

    /**
     * This method is like `_.xor` except that it accepts `comparator` which is
     * invoked to compare elements of `arrays`. The order of result values is
     * determined by the order they occur in the arrays. The comparator is invoked
     * with two arguments: (arrVal, othVal).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new array of filtered values.
     * @example
     *
     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
     * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
     *
     * _.xorWith(objects, others, _.isEqual);
     * // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]
     */
    var xorWith = baseRest(function(arrays) {
      var comparator = last(arrays);
      comparator = typeof comparator == 'function' ? comparator : undefined;
      return baseXor(arrayFilter(arrays, isArrayLikeObject), undefined, comparator);
    });

    /**
     * Creates an array of grouped elements, the first of which contains the
     * first elements of the given arrays, the second of which contains the
     * second elements of the given arrays, and so on.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {...Array} [arrays] The arrays to process.
     * @returns {Array} Returns the new array of grouped elements.
     * @example
     *
     * _.zip(['a', 'b'], [1, 2], [true, false]);
     * // => [['a', 1, true], ['b', 2, false]]
     */
    var zip = baseRest(unzip);

    /**
     * This method is like `_.fromPairs` except that it accepts two arrays,
     * one of property identifiers and one of corresponding values.
     *
     * @static
     * @memberOf _
     * @since 0.4.0
     * @category Array
     * @param {Array} [props=[]] The property identifiers.
     * @param {Array} [values=[]] The property values.
     * @returns {Object} Returns the new object.
     * @example
     *
     * _.zipObject(['a', 'b'], [1, 2]);
     * // => { 'a': 1, 'b': 2 }
     */
    function zipObject(props, values) {
      return baseZipObject(props || [], values || [], assignValue);
    }

    /**
     * This method is like `_.zipObject` except that it supports property paths.
     *
     * @static
     * @memberOf _
     * @since 4.1.0
     * @category Array
     * @param {Array} [props=[]] The property identifiers.
     * @param {Array} [values=[]] The property values.
     * @returns {Object} Returns the new object.
     * @example
     *
     * _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]);
     * // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } }
     */
    function zipObjectDeep(props, values) {
      return baseZipObject(props || [], values || [], baseSet);
    }

    /**
     * This method is like `_.zip` except that it accepts `iteratee` to specify
     * how grouped values should be combined. The iteratee is invoked with the
     * elements of each group: (...group).
     *
     * @static
     * @memberOf _
     * @since 3.8.0
     * @category Array
     * @param {...Array} [arrays] The arrays to process.
     * @param {Function} [iteratee=_.identity] The function to combine
     *  grouped values.
     * @returns {Array} Returns the new array of grouped elements.
     * @example
     *
     * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) {
     *   return a + b + c;
     * });
     * // => [111, 222]
     */
    var zipWith = baseRest(function(arrays) {
      var length = arrays.length,
          iteratee = length > 1 ? arrays[length - 1] : undefined;

      iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined;
      return unzipWith(arrays, iteratee);
    });

    /*------------------------------------------------------------------------*/

    /**
     * Creates a `lodash` wrapper instance that wraps `value` with explicit method
     * chain sequences enabled. The result of such sequences must be unwrapped
     * with `_#value`.
     *
     * @static
     * @memberOf _
     * @since 1.3.0
     * @category Seq
     * @param {*} value The value to wrap.
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'age': 36 },
     *   { 'user': 'fred',    'age': 40 },
     *   { 'user': 'pebbles', 'age': 1 }
     * ];
     *
     * var youngest = _
     *   .chain(users)
     *   .sortBy('age')
     *   .map(function(o) {
     *     return o.user + ' is ' + o.age;
     *   })
     *   .head()
     *   .value();
     * // => 'pebbles is 1'
     */
    function chain(value) {
      var result = lodash(value);
      result.__chain__ = true;
      return result;
    }

    /**
     * This method invokes `interceptor` and returns `value`. The interceptor
     * is invoked with one argument; (value). The purpose of this method is to
     * "tap into" a method chain sequence in order to modify intermediate results.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Seq
     * @param {*} value The value to provide to `interceptor`.
     * @param {Function} interceptor The function to invoke.
     * @returns {*} Returns `value`.
     * @example
     *
     * _([1, 2, 3])
     *  .tap(function(array) {
     *    // Mutate input array.
     *    array.pop();
     *  })
     *  .reverse()
     *  .value();
     * // => [2, 1]
     */
    function tap(value, interceptor) {
      interceptor(value);
      return value;
    }

    /**
     * This method is like `_.tap` except that it returns the result of `interceptor`.
     * The purpose of this method is to "pass thru" values replacing intermediate
     * results in a method chain sequence.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Seq
     * @param {*} value The value to provide to `interceptor`.
     * @param {Function} interceptor The function to invoke.
     * @returns {*} Returns the result of `interceptor`.
     * @example
     *
     * _('  abc  ')
     *  .chain()
     *  .trim()
     *  .thru(function(value) {
     *    return [value];
     *  })
     *  .value();
     * // => ['abc']
     */
    function thru(value, interceptor) {
      return interceptor(value);
    }

    /**
     * This method is the wrapper version of `_.at`.
     *
     * @name at
     * @memberOf _
     * @since 1.0.0
     * @category Seq
     * @param {...(string|string[])} [paths] The property paths to pick.
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };
     *
     * _(object).at(['a[0].b.c', 'a[1]']).value();
     * // => [3, 4]
     */
    var wrapperAt = flatRest(function(paths) {
      var length = paths.length,
          start = length ? paths[0] : 0,
          value = this.__wrapped__,
          interceptor = function(object) { return baseAt(object, paths); };

      if (length > 1 || this.__actions__.length ||
          !(value instanceof LazyWrapper) || !isIndex(start)) {
        return this.thru(interceptor);
      }
      value = value.slice(start, +start + (length ? 1 : 0));
      value.__actions__.push({
        'func': thru,
        'args': [interceptor],
        'thisArg': undefined
      });
      return new LodashWrapper(value, this.__chain__).thru(function(array) {
        if (length && !array.length) {
          array.push(undefined);
        }
        return array;
      });
    });

    /**
     * Creates a `lodash` wrapper instance with explicit method chain sequences enabled.
     *
     * @name chain
     * @memberOf _
     * @since 0.1.0
     * @category Seq
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36 },
     *   { 'user': 'fred',   'age': 40 }
     * ];
     *
     * // A sequence without explicit chaining.
     * _(users).head();
     * // => { 'user': 'barney', 'age': 36 }
     *
     * // A sequence with explicit chaining.
     * _(users)
     *   .chain()
     *   .head()
     *   .pick('user')
     *   .value();
     * // => { 'user': 'barney' }
     */
    function wrapperChain() {
      return chain(this);
    }

    /**
     * Executes the chain sequence and returns the wrapped result.
     *
     * @name commit
     * @memberOf _
     * @since 3.2.0
     * @category Seq
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * var array = [1, 2];
     * var wrapped = _(array).push(3);
     *
     * console.log(array);
     * // => [1, 2]
     *
     * wrapped = wrapped.commit();
     * console.log(array);
     * // => [1, 2, 3]
     *
     * wrapped.last();
     * // => 3
     *
     * console.log(array);
     * // => [1, 2, 3]
     */
    function wrapperCommit() {
      return new LodashWrapper(this.value(), this.__chain__);
    }

    /**
     * Gets the next value on a wrapped object following the
     * [iterator protocol](https://mdn.io/iteration_protocols#iterator).
     *
     * @name next
     * @memberOf _
     * @since 4.0.0
     * @category Seq
     * @returns {Object} Returns the next iterator value.
     * @example
     *
     * var wrapped = _([1, 2]);
     *
     * wrapped.next();
     * // => { 'done': false, 'value': 1 }
     *
     * wrapped.next();
     * // => { 'done': false, 'value': 2 }
     *
     * wrapped.next();
     * // => { 'done': true, 'value': undefined }
     */
    function wrapperNext() {
      if (this.__values__ === undefined) {
        this.__values__ = toArray(this.value());
      }
      var done = this.__index__ >= this.__values__.length,
          value = done ? undefined : this.__values__[this.__index__++];

      return { 'done': done, 'value': value };
    }

    /**
     * Enables the wrapper to be iterable.
     *
     * @name Symbol.iterator
     * @memberOf _
     * @since 4.0.0
     * @category Seq
     * @returns {Object} Returns the wrapper object.
     * @example
     *
     * var wrapped = _([1, 2]);
     *
     * wrapped[Symbol.iterator]() === wrapped;
     * // => true
     *
     * Array.from(wrapped);
     * // => [1, 2]
     */
    function wrapperToIterator() {
      return this;
    }

    /**
     * Creates a clone of the chain sequence planting `value` as the wrapped value.
     *
     * @name plant
     * @memberOf _
     * @since 3.2.0
     * @category Seq
     * @param {*} value The value to plant.
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * function square(n) {
     *   return n * n;
     * }
     *
     * var wrapped = _([1, 2]).map(square);
     * var other = wrapped.plant([3, 4]);
     *
     * other.value();
     * // => [9, 16]
     *
     * wrapped.value();
     * // => [1, 4]
     */
    function wrapperPlant(value) {
      var result,
          parent = this;

      while (parent instanceof baseLodash) {
        var clone = wrapperClone(parent);
        clone.__index__ = 0;
        clone.__values__ = undefined;
        if (result) {
          previous.__wrapped__ = clone;
        } else {
          result = clone;
        }
        var previous = clone;
        parent = parent.__wrapped__;
      }
      previous.__wrapped__ = value;
      return result;
    }

    /**
     * This method is the wrapper version of `_.reverse`.
     *
     * **Note:** This method mutates the wrapped array.
     *
     * @name reverse
     * @memberOf _
     * @since 0.1.0
     * @category Seq
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * var array = [1, 2, 3];
     *
     * _(array).reverse().value()
     * // => [3, 2, 1]
     *
     * console.log(array);
     * // => [3, 2, 1]
     */
    function wrapperReverse() {
      var value = this.__wrapped__;
      if (value instanceof LazyWrapper) {
        var wrapped = value;
        if (this.__actions__.length) {
          wrapped = new LazyWrapper(this);
        }
        wrapped = wrapped.reverse();
        wrapped.__actions__.push({
          'func': thru,
          'args': [reverse],
          'thisArg': undefined
        });
        return new LodashWrapper(wrapped, this.__chain__);
      }
      return this.thru(reverse);
    }

    /**
     * Executes the chain sequence to resolve the unwrapped value.
     *
     * @name value
     * @memberOf _
     * @since 0.1.0
     * @alias toJSON, valueOf
     * @category Seq
     * @returns {*} Returns the resolved unwrapped value.
     * @example
     *
     * _([1, 2, 3]).value();
     * // => [1, 2, 3]
     */
    function wrapperValue() {
      return baseWrapperValue(this.__wrapped__, this.__actions__);
    }

    /*------------------------------------------------------------------------*/

    /**
     * Creates an object composed of keys generated from the results of running
     * each element of `collection` thru `iteratee`. The corresponding value of
     * each key is the number of times the key was returned by `iteratee`. The
     * iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 0.5.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
     * @returns {Object} Returns the composed aggregate object.
     * @example
     *
     * _.countBy([6.1, 4.2, 6.3], Math.floor);
     * // => { '4': 1, '6': 2 }
     *
     * // The `_.property` iteratee shorthand.
     * _.countBy(['one', 'two', 'three'], 'length');
     * // => { '3': 2, '5': 1 }
     */
    var countBy = createAggregator(function(result, value, key) {
      if (hasOwnProperty.call(result, key)) {
        ++result[key];
      } else {
        baseAssignValue(result, key, 1);
      }
    });

    /**
     * Checks if `predicate` returns truthy for **all** elements of `collection`.
     * Iteration is stopped once `predicate` returns falsey. The predicate is
     * invoked with three arguments: (value, index|key, collection).
     *
     * **Note:** This method returns `true` for
     * [empty collections](https://en.wikipedia.org/wiki/Empty_set) because
     * [everything is true](https://en.wikipedia.org/wiki/Vacuous_truth) of
     * elements of empty collections.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {boolean} Returns `true` if all elements pass the predicate check,
     *  else `false`.
     * @example
     *
     * _.every([true, 1, null, 'yes'], Boolean);
     * // => false
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36, 'active': false },
     *   { 'user': 'fred',   'age': 40, 'active': false }
     * ];
     *
     * // The `_.matches` iteratee shorthand.
     * _.every(users, { 'user': 'barney', 'active': false });
     * // => false
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.every(users, ['active', false]);
     * // => true
     *
     * // The `_.property` iteratee shorthand.
     * _.every(users, 'active');
     * // => false
     */
    function every(collection, predicate, guard) {
      var func = isArray(collection) ? arrayEvery : baseEvery;
      if (guard && isIterateeCall(collection, predicate, guard)) {
        predicate = undefined;
      }
      return func(collection, getIteratee(predicate, 3));
    }

    /**
     * Iterates over elements of `collection`, returning an array of all elements
     * `predicate` returns truthy for. The predicate is invoked with three
     * arguments: (value, index|key, collection).
     *
     * **Note:** Unlike `_.remove`, this method returns a new array.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the new filtered array.
     * @see _.reject
     * @example
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36, 'active': true },
     *   { 'user': 'fred',   'age': 40, 'active': false }
     * ];
     *
     * _.filter(users, function(o) { return !o.active; });
     * // => objects for ['fred']
     *
     * // The `_.matches` iteratee shorthand.
     * _.filter(users, { 'age': 36, 'active': true });
     * // => objects for ['barney']
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.filter(users, ['active', false]);
     * // => objects for ['fred']
     *
     * // The `_.property` iteratee shorthand.
     * _.filter(users, 'active');
     * // => objects for ['barney']
     */
    function filter(collection, predicate) {
      var func = isArray(collection) ? arrayFilter : baseFilter;
      return func(collection, getIteratee(predicate, 3));
    }

    /**
     * Iterates over elements of `collection`, returning the first element
     * `predicate` returns truthy for. The predicate is invoked with three
     * arguments: (value, index|key, collection).
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to inspect.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @param {number} [fromIndex=0] The index to search from.
     * @returns {*} Returns the matched element, else `undefined`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'age': 36, 'active': true },
     *   { 'user': 'fred',    'age': 40, 'active': false },
     *   { 'user': 'pebbles', 'age': 1,  'active': true }
     * ];
     *
     * _.find(users, function(o) { return o.age < 40; });
     * // => object for 'barney'
     *
     * // The `_.matches` iteratee shorthand.
     * _.find(users, { 'age': 1, 'active': true });
     * // => object for 'pebbles'
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.find(users, ['active', false]);
     * // => object for 'fred'
     *
     * // The `_.property` iteratee shorthand.
     * _.find(users, 'active');
     * // => object for 'barney'
     */
    var find = createFind(findIndex);

    /**
     * This method is like `_.find` except that it iterates over elements of
     * `collection` from right to left.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to inspect.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @param {number} [fromIndex=collection.length-1] The index to search from.
     * @returns {*} Returns the matched element, else `undefined`.
     * @example
     *
     * _.findLast([1, 2, 3, 4], function(n) {
     *   return n % 2 == 1;
     * });
     * // => 3
     */
    var findLast = createFind(findLastIndex);

    /**
     * Creates a flattened array of values by running each element in `collection`
     * thru `iteratee` and flattening the mapped results. The iteratee is invoked
     * with three arguments: (value, index|key, collection).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the new flattened array.
     * @example
     *
     * function duplicate(n) {
     *   return [n, n];
     * }
     *
     * _.flatMap([1, 2], duplicate);
     * // => [1, 1, 2, 2]
     */
    function flatMap(collection, iteratee) {
      return baseFlatten(map(collection, iteratee), 1);
    }

    /**
     * This method is like `_.flatMap` except that it recursively flattens the
     * mapped results.
     *
     * @static
     * @memberOf _
     * @since 4.7.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the new flattened array.
     * @example
     *
     * function duplicate(n) {
     *   return [[[n, n]]];
     * }
     *
     * _.flatMapDeep([1, 2], duplicate);
     * // => [1, 1, 2, 2]
     */
    function flatMapDeep(collection, iteratee) {
      return baseFlatten(map(collection, iteratee), INFINITY);
    }

    /**
     * This method is like `_.flatMap` except that it recursively flattens the
     * mapped results up to `depth` times.
     *
     * @static
     * @memberOf _
     * @since 4.7.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @param {number} [depth=1] The maximum recursion depth.
     * @returns {Array} Returns the new flattened array.
     * @example
     *
     * function duplicate(n) {
     *   return [[[n, n]]];
     * }
     *
     * _.flatMapDepth([1, 2], duplicate, 2);
     * // => [[1, 1], [2, 2]]
     */
    function flatMapDepth(collection, iteratee, depth) {
      depth = depth === undefined ? 1 : toInteger(depth);
      return baseFlatten(map(collection, iteratee), depth);
    }

    /**
     * Iterates over elements of `collection` and invokes `iteratee` for each element.
     * The iteratee is invoked with three arguments: (value, index|key, collection).
     * Iteratee functions may exit iteration early by explicitly returning `false`.
     *
     * **Note:** As with other "Collections" methods, objects with a "length"
     * property are iterated like arrays. To avoid this behavior use `_.forIn`
     * or `_.forOwn` for object iteration.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @alias each
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Array|Object} Returns `collection`.
     * @see _.forEachRight
     * @example
     *
     * _.forEach([1, 2], function(value) {
     *   console.log(value);
     * });
     * // => Logs `1` then `2`.
     *
     * _.forEach({ 'a': 1, 'b': 2 }, function(value, key) {
     *   console.log(key);
     * });
     * // => Logs 'a' then 'b' (iteration order is not guaranteed).
     */
    function forEach(collection, iteratee) {
      var func = isArray(collection) ? arrayEach : baseEach;
      return func(collection, getIteratee(iteratee, 3));
    }

    /**
     * This method is like `_.forEach` except that it iterates over elements of
     * `collection` from right to left.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @alias eachRight
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Array|Object} Returns `collection`.
     * @see _.forEach
     * @example
     *
     * _.forEachRight([1, 2], function(value) {
     *   console.log(value);
     * });
     * // => Logs `2` then `1`.
     */
    function forEachRight(collection, iteratee) {
      var func = isArray(collection) ? arrayEachRight : baseEachRight;
      return func(collection, getIteratee(iteratee, 3));
    }

    /**
     * Creates an object composed of keys generated from the results of running
     * each element of `collection` thru `iteratee`. The order of grouped values
     * is determined by the order they occur in `collection`. The corresponding
     * value of each key is an array of elements responsible for generating the
     * key. The iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
     * @returns {Object} Returns the composed aggregate object.
     * @example
     *
     * _.groupBy([6.1, 4.2, 6.3], Math.floor);
     * // => { '4': [4.2], '6': [6.1, 6.3] }
     *
     * // The `_.property` iteratee shorthand.
     * _.groupBy(['one', 'two', 'three'], 'length');
     * // => { '3': ['one', 'two'], '5': ['three'] }
     */
    var groupBy = createAggregator(function(result, value, key) {
      if (hasOwnProperty.call(result, key)) {
        result[key].push(value);
      } else {
        baseAssignValue(result, key, [value]);
      }
    });

    /**
     * Checks if `value` is in `collection`. If `collection` is a string, it's
     * checked for a substring of `value`, otherwise
     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * is used for equality comparisons. If `fromIndex` is negative, it's used as
     * the offset from the end of `collection`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object|string} collection The collection to inspect.
     * @param {*} value The value to search for.
     * @param {number} [fromIndex=0] The index to search from.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.
     * @returns {boolean} Returns `true` if `value` is found, else `false`.
     * @example
     *
     * _.includes([1, 2, 3], 1);
     * // => true
     *
     * _.includes([1, 2, 3], 1, 2);
     * // => false
     *
     * _.includes({ 'a': 1, 'b': 2 }, 1);
     * // => true
     *
     * _.includes('abcd', 'bc');
     * // => true
     */
    function includes(collection, value, fromIndex, guard) {
      collection = isArrayLike(collection) ? collection : values(collection);
      fromIndex = (fromIndex && !guard) ? toInteger(fromIndex) : 0;

      var length = collection.length;
      if (fromIndex < 0) {
        fromIndex = nativeMax(length + fromIndex, 0);
      }
      return isString(collection)
        ? (fromIndex <= length && collection.indexOf(value, fromIndex) > -1)
        : (!!length && baseIndexOf(collection, value, fromIndex) > -1);
    }

    /**
     * Invokes the method at `path` of each element in `collection`, returning
     * an array of the results of each invoked method. Any additional arguments
     * are provided to each invoked method. If `path` is a function, it's invoked
     * for, and `this` bound to, each element in `collection`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Array|Function|string} path The path of the method to invoke or
     *  the function invoked per iteration.
     * @param {...*} [args] The arguments to invoke each method with.
     * @returns {Array} Returns the array of results.
     * @example
     *
     * _.invokeMap([[5, 1, 7], [3, 2, 1]], 'sort');
     * // => [[1, 5, 7], [1, 2, 3]]
     *
     * _.invokeMap([123, 456], String.prototype.split, '');
     * // => [['1', '2', '3'], ['4', '5', '6']]
     */
    var invokeMap = baseRest(function(collection, path, args) {
      var index = -1,
          isFunc = typeof path == 'function',
          result = isArrayLike(collection) ? Array(collection.length) : [];

      baseEach(collection, function(value) {
        result[++index] = isFunc ? apply(path, value, args) : baseInvoke(value, path, args);
      });
      return result;
    });

    /**
     * Creates an object composed of keys generated from the results of running
     * each element of `collection` thru `iteratee`. The corresponding value of
     * each key is the last element responsible for generating the key. The
     * iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
     * @returns {Object} Returns the composed aggregate object.
     * @example
     *
     * var array = [
     *   { 'dir': 'left', 'code': 97 },
     *   { 'dir': 'right', 'code': 100 }
     * ];
     *
     * _.keyBy(array, function(o) {
     *   return String.fromCharCode(o.code);
     * });
     * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }
     *
     * _.keyBy(array, 'dir');
     * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } }
     */
    var keyBy = createAggregator(function(result, value, key) {
      baseAssignValue(result, key, value);
    });

    /**
     * Creates an array of values by running each element in `collection` thru
     * `iteratee`. The iteratee is invoked with three arguments:
     * (value, index|key, collection).
     *
     * Many lodash methods are guarded to work as iteratees for methods like
     * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`.
     *
     * The guarded methods are:
     * `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`,
     * `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`,
     * `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`,
     * `template`, `trim`, `trimEnd`, `trimStart`, and `words`
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the new mapped array.
     * @example
     *
     * function square(n) {
     *   return n * n;
     * }
     *
     * _.map([4, 8], square);
     * // => [16, 64]
     *
     * _.map({ 'a': 4, 'b': 8 }, square);
     * // => [16, 64] (iteration order is not guaranteed)
     *
     * var users = [
     *   { 'user': 'barney' },
     *   { 'user': 'fred' }
     * ];
     *
     * // The `_.property` iteratee shorthand.
     * _.map(users, 'user');
     * // => ['barney', 'fred']
     */
    function map(collection, iteratee) {
      var func = isArray(collection) ? arrayMap : baseMap;
      return func(collection, getIteratee(iteratee, 3));
    }

    /**
     * This method is like `_.sortBy` except that it allows specifying the sort
     * orders of the iteratees to sort by. If `orders` is unspecified, all values
     * are sorted in ascending order. Otherwise, specify an order of "desc" for
     * descending or "asc" for ascending sort order of corresponding values.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Array[]|Function[]|Object[]|string[]} [iteratees=[_.identity]]
     *  The iteratees to sort by.
     * @param {string[]} [orders] The sort orders of `iteratees`.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.
     * @returns {Array} Returns the new sorted array.
     * @example
     *
     * var users = [
     *   { 'user': 'fred',   'age': 48 },
     *   { 'user': 'barney', 'age': 34 },
     *   { 'user': 'fred',   'age': 40 },
     *   { 'user': 'barney', 'age': 36 }
     * ];
     *
     * // Sort by `user` in ascending order and by `age` in descending order.
     * _.orderBy(users, ['user', 'age'], ['asc', 'desc']);
     * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]
     */
    function orderBy(collection, iteratees, orders, guard) {
      if (collection == null) {
        return [];
      }
      if (!isArray(iteratees)) {
        iteratees = iteratees == null ? [] : [iteratees];
      }
      orders = guard ? undefined : orders;
      if (!isArray(orders)) {
        orders = orders == null ? [] : [orders];
      }
      return baseOrderBy(collection, iteratees, orders);
    }

    /**
     * Creates an array of elements split into two groups, the first of which
     * contains elements `predicate` returns truthy for, the second of which
     * contains elements `predicate` returns falsey for. The predicate is
     * invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the array of grouped elements.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'age': 36, 'active': false },
     *   { 'user': 'fred',    'age': 40, 'active': true },
     *   { 'user': 'pebbles', 'age': 1,  'active': false }
     * ];
     *
     * _.partition(users, function(o) { return o.active; });
     * // => objects for [['fred'], ['barney', 'pebbles']]
     *
     * // The `_.matches` iteratee shorthand.
     * _.partition(users, { 'age': 1, 'active': false });
     * // => objects for [['pebbles'], ['barney', 'fred']]
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.partition(users, ['active', false]);
     * // => objects for [['barney', 'pebbles'], ['fred']]
     *
     * // The `_.property` iteratee shorthand.
     * _.partition(users, 'active');
     * // => objects for [['fred'], ['barney', 'pebbles']]
     */
    var partition = createAggregator(function(result, value, key) {
      result[key ? 0 : 1].push(value);
    }, function() { return [[], []]; });

    /**
     * Reduces `collection` to a value which is the accumulated result of running
     * each element in `collection` thru `iteratee`, where each successive
     * invocation is supplied the return value of the previous. If `accumulator`
     * is not given, the first element of `collection` is used as the initial
     * value. The iteratee is invoked with four arguments:
     * (accumulator, value, index|key, collection).
     *
     * Many lodash methods are guarded to work as iteratees for methods like
     * `_.reduce`, `_.reduceRight`, and `_.transform`.
     *
     * The guarded methods are:
     * `assign`, `defaults`, `defaultsDeep`, `includes`, `merge`, `orderBy`,
     * and `sortBy`
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @param {*} [accumulator] The initial value.
     * @returns {*} Returns the accumulated value.
     * @see _.reduceRight
     * @example
     *
     * _.reduce([1, 2], function(sum, n) {
     *   return sum + n;
     * }, 0);
     * // => 3
     *
     * _.reduce({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {
     *   (result[value] || (result[value] = [])).push(key);
     *   return result;
     * }, {});
     * // => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed)
     */
    function reduce(collection, iteratee, accumulator) {
      var func = isArray(collection) ? arrayReduce : baseReduce,
          initAccum = arguments.length < 3;

      return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEach);
    }

    /**
     * This method is like `_.reduce` except that it iterates over elements of
     * `collection` from right to left.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @param {*} [accumulator] The initial value.
     * @returns {*} Returns the accumulated value.
     * @see _.reduce
     * @example
     *
     * var array = [[0, 1], [2, 3], [4, 5]];
     *
     * _.reduceRight(array, function(flattened, other) {
     *   return flattened.concat(other);
     * }, []);
     * // => [4, 5, 2, 3, 0, 1]
     */
    function reduceRight(collection, iteratee, accumulator) {
      var func = isArray(collection) ? arrayReduceRight : baseReduce,
          initAccum = arguments.length < 3;

      return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEachRight);
    }

    /**
     * The opposite of `_.filter`; this method returns the elements of `collection`
     * that `predicate` does **not** return truthy for.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the new filtered array.
     * @see _.filter
     * @example
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36, 'active': false },
     *   { 'user': 'fred',   'age': 40, 'active': true }
     * ];
     *
     * _.reject(users, function(o) { return !o.active; });
     * // => objects for ['fred']
     *
     * // The `_.matches` iteratee shorthand.
     * _.reject(users, { 'age': 40, 'active': true });
     * // => objects for ['barney']
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.reject(users, ['active', false]);
     * // => objects for ['fred']
     *
     * // The `_.property` iteratee shorthand.
     * _.reject(users, 'active');
     * // => objects for ['barney']
     */
    function reject(collection, predicate) {
      var func = isArray(collection) ? arrayFilter : baseFilter;
      return func(collection, negate(getIteratee(predicate, 3)));
    }

    /**
     * Gets a random element from `collection`.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to sample.
     * @returns {*} Returns the random element.
     * @example
     *
     * _.sample([1, 2, 3, 4]);
     * // => 2
     */
    function sample(collection) {
      var func = isArray(collection) ? arraySample : baseSample;
      return func(collection);
    }

    /**
     * Gets `n` random elements at unique keys from `collection` up to the
     * size of `collection`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to sample.
     * @param {number} [n=1] The number of elements to sample.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Array} Returns the random elements.
     * @example
     *
     * _.sampleSize([1, 2, 3], 2);
     * // => [3, 1]
     *
     * _.sampleSize([1, 2, 3], 4);
     * // => [2, 3, 1]
     */
    function sampleSize(collection, n, guard) {
      if ((guard ? isIterateeCall(collection, n, guard) : n === undefined)) {
        n = 1;
      } else {
        n = toInteger(n);
      }
      var func = isArray(collection) ? arraySampleSize : baseSampleSize;
      return func(collection, n);
    }

    /**
     * Creates an array of shuffled values, using a version of the
     * [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle).
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to shuffle.
     * @returns {Array} Returns the new shuffled array.
     * @example
     *
     * _.shuffle([1, 2, 3, 4]);
     * // => [4, 1, 3, 2]
     */
    function shuffle(collection) {
      var func = isArray(collection) ? arrayShuffle : baseShuffle;
      return func(collection);
    }

    /**
     * Gets the size of `collection` by returning its length for array-like
     * values or the number of own enumerable string keyed properties for objects.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object|string} collection The collection to inspect.
     * @returns {number} Returns the collection size.
     * @example
     *
     * _.size([1, 2, 3]);
     * // => 3
     *
     * _.size({ 'a': 1, 'b': 2 });
     * // => 2
     *
     * _.size('pebbles');
     * // => 7
     */
    function size(collection) {
      if (collection == null) {
        return 0;
      }
      if (isArrayLike(collection)) {
        return isString(collection) ? stringSize(collection) : collection.length;
      }
      var tag = getTag(collection);
      if (tag == mapTag || tag == setTag) {
        return collection.size;
      }
      return baseKeys(collection).length;
    }

    /**
     * Checks if `predicate` returns truthy for **any** element of `collection`.
     * Iteration is stopped once `predicate` returns truthy. The predicate is
     * invoked with three arguments: (value, index|key, collection).
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {boolean} Returns `true` if any element passes the predicate check,
     *  else `false`.
     * @example
     *
     * _.some([null, 0, 'yes', false], Boolean);
     * // => true
     *
     * var users = [
     *   { 'user': 'barney', 'active': true },
     *   { 'user': 'fred',   'active': false }
     * ];
     *
     * // The `_.matches` iteratee shorthand.
     * _.some(users, { 'user': 'barney', 'active': false });
     * // => false
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.some(users, ['active', false]);
     * // => true
     *
     * // The `_.property` iteratee shorthand.
     * _.some(users, 'active');
     * // => true
     */
    function some(collection, predicate, guard) {
      var func = isArray(collection) ? arraySome : baseSome;
      if (guard && isIterateeCall(collection, predicate, guard)) {
        predicate = undefined;
      }
      return func(collection, getIteratee(predicate, 3));
    }

    /**
     * Creates an array of elements, sorted in ascending order by the results of
     * running each element in a collection thru each iteratee. This method
     * performs a stable sort, that is, it preserves the original sort order of
     * equal elements. The iteratees are invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {...(Function|Function[])} [iteratees=[_.identity]]
     *  The iteratees to sort by.
     * @returns {Array} Returns the new sorted array.
     * @example
     *
     * var users = [
     *   { 'user': 'fred',   'age': 48 },
     *   { 'user': 'barney', 'age': 36 },
     *   { 'user': 'fred',   'age': 40 },
     *   { 'user': 'barney', 'age': 34 }
     * ];
     *
     * _.sortBy(users, [function(o) { return o.user; }]);
     * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]
     *
     * _.sortBy(users, ['user', 'age']);
     * // => objects for [['barney', 34], ['barney', 36], ['fred', 40], ['fred', 48]]
     */
    var sortBy = baseRest(function(collection, iteratees) {
      if (collection == null) {
        return [];
      }
      var length = iteratees.length;
      if (length > 1 && isIterateeCall(collection, iteratees[0], iteratees[1])) {
        iteratees = [];
      } else if (length > 2 && isIterateeCall(iteratees[0], iteratees[1], iteratees[2])) {
        iteratees = [iteratees[0]];
      }
      return baseOrderBy(collection, baseFlatten(iteratees, 1), []);
    });

    /*------------------------------------------------------------------------*/

    /**
     * Gets the timestamp of the number of milliseconds that have elapsed since
     * the Unix epoch (1 January 1970 00:00:00 UTC).
     *
     * @static
     * @memberOf _
     * @since 2.4.0
     * @category Date
     * @returns {number} Returns the timestamp.
     * @example
     *
     * _.defer(function(stamp) {
     *   console.log(_.now() - stamp);
     * }, _.now());
     * // => Logs the number of milliseconds it took for the deferred invocation.
     */
    var now = ctxNow || function() {
      return root.Date.now();
    };

    /*------------------------------------------------------------------------*/

    /**
     * The opposite of `_.before`; this method creates a function that invokes
     * `func` once it's called `n` or more times.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {number} n The number of calls before `func` is invoked.
     * @param {Function} func The function to restrict.
     * @returns {Function} Returns the new restricted function.
     * @example
     *
     * var saves = ['profile', 'settings'];
     *
     * var done = _.after(saves.length, function() {
     *   console.log('done saving!');
     * });
     *
     * _.forEach(saves, function(type) {
     *   asyncSave({ 'type': type, 'complete': done });
     * });
     * // => Logs 'done saving!' after the two async saves have completed.
     */
    function after(n, func) {
      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      n = toInteger(n);
      return function() {
        if (--n < 1) {
          return func.apply(this, arguments);
        }
      };
    }

    /**
     * Creates a function that invokes `func`, with up to `n` arguments,
     * ignoring any additional arguments.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Function
     * @param {Function} func The function to cap arguments for.
     * @param {number} [n=func.length] The arity cap.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Function} Returns the new capped function.
     * @example
     *
     * _.map(['6', '8', '10'], _.ary(parseInt, 1));
     * // => [6, 8, 10]
     */
    function ary(func, n, guard) {
      n = guard ? undefined : n;
      n = (func && n == null) ? func.length : n;
      return createWrap(func, WRAP_ARY_FLAG, undefined, undefined, undefined, undefined, n);
    }

    /**
     * Creates a function that invokes `func`, with the `this` binding and arguments
     * of the created function, while it's called less than `n` times. Subsequent
     * calls to the created function return the result of the last `func` invocation.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Function
     * @param {number} n The number of calls at which `func` is no longer invoked.
     * @param {Function} func The function to restrict.
     * @returns {Function} Returns the new restricted function.
     * @example
     *
     * jQuery(element).on('click', _.before(5, addContactToList));
     * // => Allows adding up to 4 contacts to the list.
     */
    function before(n, func) {
      var result;
      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      n = toInteger(n);
      return function() {
        if (--n > 0) {
          result = func.apply(this, arguments);
        }
        if (n <= 1) {
          func = undefined;
        }
        return result;
      };
    }

    /**
     * Creates a function that invokes `func` with the `this` binding of `thisArg`
     * and `partials` prepended to the arguments it receives.
     *
     * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds,
     * may be used as a placeholder for partially applied arguments.
     *
     * **Note:** Unlike native `Function#bind`, this method doesn't set the "length"
     * property of bound functions.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to bind.
     * @param {*} thisArg The `this` binding of `func`.
     * @param {...*} [partials] The arguments to be partially applied.
     * @returns {Function} Returns the new bound function.
     * @example
     *
     * function greet(greeting, punctuation) {
     *   return greeting + ' ' + this.user + punctuation;
     * }
     *
     * var object = { 'user': 'fred' };
     *
     * var bound = _.bind(greet, object, 'hi');
     * bound('!');
     * // => 'hi fred!'
     *
     * // Bound with placeholders.
     * var bound = _.bind(greet, object, _, '!');
     * bound('hi');
     * // => 'hi fred!'
     */
    var bind = baseRest(function(func, thisArg, partials) {
      var bitmask = WRAP_BIND_FLAG;
      if (partials.length) {
        var holders = replaceHolders(partials, getHolder(bind));
        bitmask |= WRAP_PARTIAL_FLAG;
      }
      return createWrap(func, bitmask, thisArg, partials, holders);
    });

    /**
     * Creates a function that invokes the method at `object[key]` with `partials`
     * prepended to the arguments it receives.
     *
     * This method differs from `_.bind` by allowing bound functions to reference
     * methods that may be redefined or don't yet exist. See
     * [Peter Michaux's article](http://peter.michaux.ca/articles/lazy-function-definition-pattern)
     * for more details.
     *
     * The `_.bindKey.placeholder` value, which defaults to `_` in monolithic
     * builds, may be used as a placeholder for partially applied arguments.
     *
     * @static
     * @memberOf _
     * @since 0.10.0
     * @category Function
     * @param {Object} object The object to invoke the method on.
     * @param {string} key The key of the method.
     * @param {...*} [partials] The arguments to be partially applied.
     * @returns {Function} Returns the new bound function.
     * @example
     *
     * var object = {
     *   'user': 'fred',
     *   'greet': function(greeting, punctuation) {
     *     return greeting + ' ' + this.user + punctuation;
     *   }
     * };
     *
     * var bound = _.bindKey(object, 'greet', 'hi');
     * bound('!');
     * // => 'hi fred!'
     *
     * object.greet = function(greeting, punctuation) {
     *   return greeting + 'ya ' + this.user + punctuation;
     * };
     *
     * bound('!');
     * // => 'hiya fred!'
     *
     * // Bound with placeholders.
     * var bound = _.bindKey(object, 'greet', _, '!');
     * bound('hi');
     * // => 'hiya fred!'
     */
    var bindKey = baseRest(function(object, key, partials) {
      var bitmask = WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG;
      if (partials.length) {
        var holders = replaceHolders(partials, getHolder(bindKey));
        bitmask |= WRAP_PARTIAL_FLAG;
      }
      return createWrap(key, bitmask, object, partials, holders);
    });

    /**
     * Creates a function that accepts arguments of `func` and either invokes
     * `func` returning its result, if at least `arity` number of arguments have
     * been provided, or returns a function that accepts the remaining `func`
     * arguments, and so on. The arity of `func` may be specified if `func.length`
     * is not sufficient.
     *
     * The `_.curry.placeholder` value, which defaults to `_` in monolithic builds,
     * may be used as a placeholder for provided arguments.
     *
     * **Note:** This method doesn't set the "length" property of curried functions.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Function
     * @param {Function} func The function to curry.
     * @param {number} [arity=func.length] The arity of `func`.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Function} Returns the new curried function.
     * @example
     *
     * var abc = function(a, b, c) {
     *   return [a, b, c];
     * };
     *
     * var curried = _.curry(abc);
     *
     * curried(1)(2)(3);
     * // => [1, 2, 3]
     *
     * curried(1, 2)(3);
     * // => [1, 2, 3]
     *
     * curried(1, 2, 3);
     * // => [1, 2, 3]
     *
     * // Curried with placeholders.
     * curried(1)(_, 3)(2);
     * // => [1, 2, 3]
     */
    function curry(func, arity, guard) {
      arity = guard ? undefined : arity;
      var result = createWrap(func, WRAP_CURRY_FLAG, undefined, undefined, undefined, undefined, undefined, arity);
      result.placeholder = curry.placeholder;
      return result;
    }

    /**
     * This method is like `_.curry` except that arguments are applied to `func`
     * in the manner of `_.partialRight` instead of `_.partial`.
     *
     * The `_.curryRight.placeholder` value, which defaults to `_` in monolithic
     * builds, may be used as a placeholder for provided arguments.
     *
     * **Note:** This method doesn't set the "length" property of curried functions.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Function
     * @param {Function} func The function to curry.
     * @param {number} [arity=func.length] The arity of `func`.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Function} Returns the new curried function.
     * @example
     *
     * var abc = function(a, b, c) {
     *   return [a, b, c];
     * };
     *
     * var curried = _.curryRight(abc);
     *
     * curried(3)(2)(1);
     * // => [1, 2, 3]
     *
     * curried(2, 3)(1);
     * // => [1, 2, 3]
     *
     * curried(1, 2, 3);
     * // => [1, 2, 3]
     *
     * // Curried with placeholders.
     * curried(3)(1, _)(2);
     * // => [1, 2, 3]
     */
    function curryRight(func, arity, guard) {
      arity = guard ? undefined : arity;
      var result = createWrap(func, WRAP_CURRY_RIGHT_FLAG, undefined, undefined, undefined, undefined, undefined, arity);
      result.placeholder = curryRight.placeholder;
      return result;
    }

    /**
     * Creates a debounced function that delays invoking `func` until after `wait`
     * milliseconds have elapsed since the last time the debounced function was
     * invoked. The debounced function comes with a `cancel` method to cancel
     * delayed `func` invocations and a `flush` method to immediately invoke them.
     * Provide `options` to indicate whether `func` should be invoked on the
     * leading and/or trailing edge of the `wait` timeout. The `func` is invoked
     * with the last arguments provided to the debounced function. Subsequent
     * calls to the debounced function return the result of the last `func`
     * invocation.
     *
     * **Note:** If `leading` and `trailing` options are `true`, `func` is
     * invoked on the trailing edge of the timeout only if the debounced function
     * is invoked more than once during the `wait` timeout.
     *
     * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
     * until to the next tick, similar to `setTimeout` with a timeout of `0`.
     *
     * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
     * for details over the differences between `_.debounce` and `_.throttle`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to debounce.
     * @param {number} [wait=0] The number of milliseconds to delay.
     * @param {Object} [options={}] The options object.
     * @param {boolean} [options.leading=false]
     *  Specify invoking on the leading edge of the timeout.
     * @param {number} [options.maxWait]
     *  The maximum time `func` is allowed to be delayed before it's invoked.
     * @param {boolean} [options.trailing=true]
     *  Specify invoking on the trailing edge of the timeout.
     * @returns {Function} Returns the new debounced function.
     * @example
     *
     * // Avoid costly calculations while the window size is in flux.
     * jQuery(window).on('resize', _.debounce(calculateLayout, 150));
     *
     * // Invoke `sendMail` when clicked, debouncing subsequent calls.
     * jQuery(element).on('click', _.debounce(sendMail, 300, {
     *   'leading': true,
     *   'trailing': false
     * }));
     *
     * // Ensure `batchLog` is invoked once after 1 second of debounced calls.
     * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });
     * var source = new EventSource('/stream');
     * jQuery(source).on('message', debounced);
     *
     * // Cancel the trailing debounced invocation.
     * jQuery(window).on('popstate', debounced.cancel);
     */
    function debounce(func, wait, options) {
      var lastArgs,
          lastThis,
          maxWait,
          result,
          timerId,
          lastCallTime,
          lastInvokeTime = 0,
          leading = false,
          maxing = false,
          trailing = true;

      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      wait = toNumber(wait) || 0;
      if (isObject(options)) {
        leading = !!options.leading;
        maxing = 'maxWait' in options;
        maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;
        trailing = 'trailing' in options ? !!options.trailing : trailing;
      }

      function invokeFunc(time) {
        var args = lastArgs,
            thisArg = lastThis;

        lastArgs = lastThis = undefined;
        lastInvokeTime = time;
        result = func.apply(thisArg, args);
        return result;
      }

      function leadingEdge(time) {
        // Reset any `maxWait` timer.
        lastInvokeTime = time;
        // Start the timer for the trailing edge.
        timerId = setTimeout(timerExpired, wait);
        // Invoke the leading edge.
        return leading ? invokeFunc(time) : result;
      }

      function remainingWait(time) {
        var timeSinceLastCall = time - lastCallTime,
            timeSinceLastInvoke = time - lastInvokeTime,
            timeWaiting = wait - timeSinceLastCall;

        return maxing
          ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke)
          : timeWaiting;
      }

      function shouldInvoke(time) {
        var timeSinceLastCall = time - lastCallTime,
            timeSinceLastInvoke = time - lastInvokeTime;

        // Either this is the first call, activity has stopped and we're at the
        // trailing edge, the system time has gone backwards and we're treating
        // it as the trailing edge, or we've hit the `maxWait` limit.
        return (lastCallTime === undefined || (timeSinceLastCall >= wait) ||
          (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait));
      }

      function timerExpired() {
        var time = now();
        if (shouldInvoke(time)) {
          return trailingEdge(time);
        }
        // Restart the timer.
        timerId = setTimeout(timerExpired, remainingWait(time));
      }

      function trailingEdge(time) {
        timerId = undefined;

        // Only invoke if we have `lastArgs` which means `func` has been
        // debounced at least once.
        if (trailing && lastArgs) {
          return invokeFunc(time);
        }
        lastArgs = lastThis = undefined;
        return result;
      }

      function cancel() {
        if (timerId !== undefined) {
          clearTimeout(timerId);
        }
        lastInvokeTime = 0;
        lastArgs = lastCallTime = lastThis = timerId = undefined;
      }

      function flush() {
        return timerId === undefined ? result : trailingEdge(now());
      }

      function debounced() {
        var time = now(),
            isInvoking = shouldInvoke(time);

        lastArgs = arguments;
        lastThis = this;
        lastCallTime = time;

        if (isInvoking) {
          if (timerId === undefined) {
            return leadingEdge(lastCallTime);
          }
          if (maxing) {
            // Handle invocations in a tight loop.
            clearTimeout(timerId);
            timerId = setTimeout(timerExpired, wait);
            return invokeFunc(lastCallTime);
          }
        }
        if (timerId === undefined) {
          timerId = setTimeout(timerExpired, wait);
        }
        return result;
      }
      debounced.cancel = cancel;
      debounced.flush = flush;
      return debounced;
    }

    /**
     * Defers invoking the `func` until the current call stack has cleared. Any
     * additional arguments are provided to `func` when it's invoked.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to defer.
     * @param {...*} [args] The arguments to invoke `func` with.
     * @returns {number} Returns the timer id.
     * @example
     *
     * _.defer(function(text) {
     *   console.log(text);
     * }, 'deferred');
     * // => Logs 'deferred' after one millisecond.
     */
    var defer = baseRest(function(func, args) {
      return baseDelay(func, 1, args);
    });

    /**
     * Invokes `func` after `wait` milliseconds. Any additional arguments are
     * provided to `func` when it's invoked.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to delay.
     * @param {number} wait The number of milliseconds to delay invocation.
     * @param {...*} [args] The arguments to invoke `func` with.
     * @returns {number} Returns the timer id.
     * @example
     *
     * _.delay(function(text) {
     *   console.log(text);
     * }, 1000, 'later');
     * // => Logs 'later' after one second.
     */
    var delay = baseRest(function(func, wait, args) {
      return baseDelay(func, toNumber(wait) || 0, args);
    });

    /**
     * Creates a function that invokes `func` with arguments reversed.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Function
     * @param {Function} func The function to flip arguments for.
     * @returns {Function} Returns the new flipped function.
     * @example
     *
     * var flipped = _.flip(function() {
     *   return _.toArray(arguments);
     * });
     *
     * flipped('a', 'b', 'c', 'd');
     * // => ['d', 'c', 'b', 'a']
     */
    function flip(func) {
      return createWrap(func, WRAP_FLIP_FLAG);
    }

    /**
     * Creates a function that memoizes the result of `func`. If `resolver` is
     * provided, it determines the cache key for storing the result based on the
     * arguments provided to the memoized function. By default, the first argument
     * provided to the memoized function is used as the map cache key. The `func`
     * is invoked with the `this` binding of the memoized function.
     *
     * **Note:** The cache is exposed as the `cache` property on the memoized
     * function. Its creation may be customized by replacing the `_.memoize.Cache`
     * constructor with one whose instances implement the
     * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object)
     * method interface of `clear`, `delete`, `get`, `has`, and `set`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to have its output memoized.
     * @param {Function} [resolver] The function to resolve the cache key.
     * @returns {Function} Returns the new memoized function.
     * @example
     *
     * var object = { 'a': 1, 'b': 2 };
     * var other = { 'c': 3, 'd': 4 };
     *
     * var values = _.memoize(_.values);
     * values(object);
     * // => [1, 2]
     *
     * values(other);
     * // => [3, 4]
     *
     * object.a = 2;
     * values(object);
     * // => [1, 2]
     *
     * // Modify the result cache.
     * values.cache.set(object, ['a', 'b']);
     * values(object);
     * // => ['a', 'b']
     *
     * // Replace `_.memoize.Cache`.
     * _.memoize.Cache = WeakMap;
     */
    function memoize(func, resolver) {
      if (typeof func != 'function' || (resolver != null && typeof resolver != 'function')) {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      var memoized = function() {
        var args = arguments,
            key = resolver ? resolver.apply(this, args) : args[0],
            cache = memoized.cache;

        if (cache.has(key)) {
          return cache.get(key);
        }
        var result = func.apply(this, args);
        memoized.cache = cache.set(key, result) || cache;
        return result;
      };
      memoized.cache = new (memoize.Cache || MapCache);
      return memoized;
    }

    // Expose `MapCache`.
    memoize.Cache = MapCache;

    /**
     * Creates a function that negates the result of the predicate `func`. The
     * `func` predicate is invoked with the `this` binding and arguments of the
     * created function.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Function
     * @param {Function} predicate The predicate to negate.
     * @returns {Function} Returns the new negated function.
     * @example
     *
     * function isEven(n) {
     *   return n % 2 == 0;
     * }
     *
     * _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven));
     * // => [1, 3, 5]
     */
    function negate(predicate) {
      if (typeof predicate != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      return function() {
        var args = arguments;
        switch (args.length) {
          case 0: return !predicate.call(this);
          case 1: return !predicate.call(this, args[0]);
          case 2: return !predicate.call(this, args[0], args[1]);
          case 3: return !predicate.call(this, args[0], args[1], args[2]);
        }
        return !predicate.apply(this, args);
      };
    }

    /**
     * Creates a function that is restricted to invoking `func` once. Repeat calls
     * to the function return the value of the first invocation. The `func` is
     * invoked with the `this` binding and arguments of the created function.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to restrict.
     * @returns {Function} Returns the new restricted function.
     * @example
     *
     * var initialize = _.once(createApplication);
     * initialize();
     * initialize();
     * // => `createApplication` is invoked once
     */
    function once(func) {
      return before(2, func);
    }

    /**
     * Creates a function that invokes `func` with its arguments transformed.
     *
     * @static
     * @since 4.0.0
     * @memberOf _
     * @category Function
     * @param {Function} func The function to wrap.
     * @param {...(Function|Function[])} [transforms=[_.identity]]
     *  The argument transforms.
     * @returns {Function} Returns the new function.
     * @example
     *
     * function doubled(n) {
     *   return n * 2;
     * }
     *
     * function square(n) {
     *   return n * n;
     * }
     *
     * var func = _.overArgs(function(x, y) {
     *   return [x, y];
     * }, [square, doubled]);
     *
     * func(9, 3);
     * // => [81, 6]
     *
     * func(10, 5);
     * // => [100, 10]
     */
    var overArgs = castRest(function(func, transforms) {
      transforms = (transforms.length == 1 && isArray(transforms[0]))
        ? arrayMap(transforms[0], baseUnary(getIteratee()))
        : arrayMap(baseFlatten(transforms, 1), baseUnary(getIteratee()));

      var funcsLength = transforms.length;
      return baseRest(function(args) {
        var index = -1,
            length = nativeMin(args.length, funcsLength);

        while (++index < length) {
          args[index] = transforms[index].call(this, args[index]);
        }
        return apply(func, this, args);
      });
    });

    /**
     * Creates a function that invokes `func` with `partials` prepended to the
     * arguments it receives. This method is like `_.bind` except it does **not**
     * alter the `this` binding.
     *
     * The `_.partial.placeholder` value, which defaults to `_` in monolithic
     * builds, may be used as a placeholder for partially applied arguments.
     *
     * **Note:** This method doesn't set the "length" property of partially
     * applied functions.
     *
     * @static
     * @memberOf _
     * @since 0.2.0
     * @category Function
     * @param {Function} func The function to partially apply arguments to.
     * @param {...*} [partials] The arguments to be partially applied.
     * @returns {Function} Returns the new partially applied function.
     * @example
     *
     * function greet(greeting, name) {
     *   return greeting + ' ' + name;
     * }
     *
     * var sayHelloTo = _.partial(greet, 'hello');
     * sayHelloTo('fred');
     * // => 'hello fred'
     *
     * // Partially applied with placeholders.
     * var greetFred = _.partial(greet, _, 'fred');
     * greetFred('hi');
     * // => 'hi fred'
     */
    var partial = baseRest(function(func, partials) {
      var holders = replaceHolders(partials, getHolder(partial));
      return createWrap(func, WRAP_PARTIAL_FLAG, undefined, partials, holders);
    });

    /**
     * This method is like `_.partial` except that partially applied arguments
     * are appended to the arguments it receives.
     *
     * The `_.partialRight.placeholder` value, which defaults to `_` in monolithic
     * builds, may be used as a placeholder for partially applied arguments.
     *
     * **Note:** This method doesn't set the "length" property of partially
     * applied functions.
     *
     * @static
     * @memberOf _
     * @since 1.0.0
     * @category Function
     * @param {Function} func The function to partially apply arguments to.
     * @param {...*} [partials] The arguments to be partially applied.
     * @returns {Function} Returns the new partially applied function.
     * @example
     *
     * function greet(greeting, name) {
     *   return greeting + ' ' + name;
     * }
     *
     * var greetFred = _.partialRight(greet, 'fred');
     * greetFred('hi');
     * // => 'hi fred'
     *
     * // Partially applied with placeholders.
     * var sayHelloTo = _.partialRight(greet, 'hello', _);
     * sayHelloTo('fred');
     * // => 'hello fred'
     */
    var partialRight = baseRest(function(func, partials) {
      var holders = replaceHolders(partials, getHolder(partialRight));
      return createWrap(func, WRAP_PARTIAL_RIGHT_FLAG, undefined, partials, holders);
    });

    /**
     * Creates a function that invokes `func` with arguments arranged according
     * to the specified `indexes` where the argument value at the first index is
     * provided as the first argument, the argument value at the second index is
     * provided as the second argument, and so on.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Function
     * @param {Function} func The function to rearrange arguments for.
     * @param {...(number|number[])} indexes The arranged argument indexes.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var rearged = _.rearg(function(a, b, c) {
     *   return [a, b, c];
     * }, [2, 0, 1]);
     *
     * rearged('b', 'c', 'a')
     * // => ['a', 'b', 'c']
     */
    var rearg = flatRest(function(func, indexes) {
      return createWrap(func, WRAP_REARG_FLAG, undefined, undefined, undefined, indexes);
    });

    /**
     * Creates a function that invokes `func` with the `this` binding of the
     * created function and arguments from `start` and beyond provided as
     * an array.
     *
     * **Note:** This method is based on the
     * [rest parameter](https://mdn.io/rest_parameters).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Function
     * @param {Function} func The function to apply a rest parameter to.
     * @param {number} [start=func.length-1] The start position of the rest parameter.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var say = _.rest(function(what, names) {
     *   return what + ' ' + _.initial(names).join(', ') +
     *     (_.size(names) > 1 ? ', & ' : '') + _.last(names);
     * });
     *
     * say('hello', 'fred', 'barney', 'pebbles');
     * // => 'hello fred, barney, & pebbles'
     */
    function rest(func, start) {
      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      start = start === undefined ? start : toInteger(start);
      return baseRest(func, start);
    }

    /**
     * Creates a function that invokes `func` with the `this` binding of the
     * create function and an array of arguments much like
     * [`Function#apply`](http://www.ecma-international.org/ecma-262/7.0/#sec-function.prototype.apply).
     *
     * **Note:** This method is based on the
     * [spread operator](https://mdn.io/spread_operator).
     *
     * @static
     * @memberOf _
     * @since 3.2.0
     * @category Function
     * @param {Function} func The function to spread arguments over.
     * @param {number} [start=0] The start position of the spread.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var say = _.spread(function(who, what) {
     *   return who + ' says ' + what;
     * });
     *
     * say(['fred', 'hello']);
     * // => 'fred says hello'
     *
     * var numbers = Promise.all([
     *   Promise.resolve(40),
     *   Promise.resolve(36)
     * ]);
     *
     * numbers.then(_.spread(function(x, y) {
     *   return x + y;
     * }));
     * // => a Promise of 76
     */
    function spread(func, start) {
      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      start = start == null ? 0 : nativeMax(toInteger(start), 0);
      return baseRest(function(args) {
        var array = args[start],
            otherArgs = castSlice(args, 0, start);

        if (array) {
          arrayPush(otherArgs, array);
        }
        return apply(func, this, otherArgs);
      });
    }

    /**
     * Creates a throttled function that only invokes `func` at most once per
     * every `wait` milliseconds. The throttled function comes with a `cancel`
     * method to cancel delayed `func` invocations and a `flush` method to
     * immediately invoke them. Provide `options` to indicate whether `func`
     * should be invoked on the leading and/or trailing edge of the `wait`
     * timeout. The `func` is invoked with the last arguments provided to the
     * throttled function. Subsequent calls to the throttled function return the
     * result of the last `func` invocation.
     *
     * **Note:** If `leading` and `trailing` options are `true`, `func` is
     * invoked on the trailing edge of the timeout only if the throttled function
     * is invoked more than once during the `wait` timeout.
     *
     * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
     * until to the next tick, similar to `setTimeout` with a timeout of `0`.
     *
     * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
     * for details over the differences between `_.throttle` and `_.debounce`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to throttle.
     * @param {number} [wait=0] The number of milliseconds to throttle invocations to.
     * @param {Object} [options={}] The options object.
     * @param {boolean} [options.leading=true]
     *  Specify invoking on the leading edge of the timeout.
     * @param {boolean} [options.trailing=true]
     *  Specify invoking on the trailing edge of the timeout.
     * @returns {Function} Returns the new throttled function.
     * @example
     *
     * // Avoid excessively updating the position while scrolling.
     * jQuery(window).on('scroll', _.throttle(updatePosition, 100));
     *
     * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.
     * var throttled = _.throttle(renewToken, 300000, { 'trailing': false });
     * jQuery(element).on('click', throttled);
     *
     * // Cancel the trailing throttled invocation.
     * jQuery(window).on('popstate', throttled.cancel);
     */
    function throttle(func, wait, options) {
      var leading = true,
          trailing = true;

      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      if (isObject(options)) {
        leading = 'leading' in options ? !!options.leading : leading;
        trailing = 'trailing' in options ? !!options.trailing : trailing;
      }
      return debounce(func, wait, {
        'leading': leading,
        'maxWait': wait,
        'trailing': trailing
      });
    }

    /**
     * Creates a function that accepts up to one argument, ignoring any
     * additional arguments.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Function
     * @param {Function} func The function to cap arguments for.
     * @returns {Function} Returns the new capped function.
     * @example
     *
     * _.map(['6', '8', '10'], _.unary(parseInt));
     * // => [6, 8, 10]
     */
    function unary(func) {
      return ary(func, 1);
    }

    /**
     * Creates a function that provides `value` to `wrapper` as its first
     * argument. Any additional arguments provided to the function are appended
     * to those provided to the `wrapper`. The wrapper is invoked with the `this`
     * binding of the created function.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {*} value The value to wrap.
     * @param {Function} [wrapper=identity] The wrapper function.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var p = _.wrap(_.escape, function(func, text) {
     *   return '<p>' + func(text) + '</p>';
     * });
     *
     * p('fred, barney, & pebbles');
     * // => '<p>fred, barney, &amp; pebbles</p>'
     */
    function wrap(value, wrapper) {
      return partial(castFunction(wrapper), value);
    }

    /*------------------------------------------------------------------------*/

    /**
     * Casts `value` as an array if it's not one.
     *
     * @static
     * @memberOf _
     * @since 4.4.0
     * @category Lang
     * @param {*} value The value to inspect.
     * @returns {Array} Returns the cast array.
     * @example
     *
     * _.castArray(1);
     * // => [1]
     *
     * _.castArray({ 'a': 1 });
     * // => [{ 'a': 1 }]
     *
     * _.castArray('abc');
     * // => ['abc']
     *
     * _.castArray(null);
     * // => [null]
     *
     * _.castArray(undefined);
     * // => [undefined]
     *
     * _.castArray();
     * // => []
     *
     * var array = [1, 2, 3];
     * console.log(_.castArray(array) === array);
     * // => true
     */
    function castArray() {
      if (!arguments.length) {
        return [];
      }
      var value = arguments[0];
      return isArray(value) ? value : [value];
    }

    /**
     * Creates a shallow clone of `value`.
     *
     * **Note:** This method is loosely based on the
     * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm)
     * and supports cloning arrays, array buffers, booleans, date objects, maps,
     * numbers, `Object` objects, regexes, sets, strings, symbols, and typed
     * arrays. The own enumerable properties of `arguments` objects are cloned
     * as plain objects. An empty object is returned for uncloneable values such
     * as error objects, functions, DOM nodes, and WeakMaps.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to clone.
     * @returns {*} Returns the cloned value.
     * @see _.cloneDeep
     * @example
     *
     * var objects = [{ 'a': 1 }, { 'b': 2 }];
     *
     * var shallow = _.clone(objects);
     * console.log(shallow[0] === objects[0]);
     * // => true
     */
    function clone(value) {
      return baseClone(value, CLONE_SYMBOLS_FLAG);
    }

    /**
     * This method is like `_.clone` except that it accepts `customizer` which
     * is invoked to produce the cloned value. If `customizer` returns `undefined`,
     * cloning is handled by the method instead. The `customizer` is invoked with
     * up to four arguments; (value [, index|key, object, stack]).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to clone.
     * @param {Function} [customizer] The function to customize cloning.
     * @returns {*} Returns the cloned value.
     * @see _.cloneDeepWith
     * @example
     *
     * function customizer(value) {
     *   if (_.isElement(value)) {
     *     return value.cloneNode(false);
     *   }
     * }
     *
     * var el = _.cloneWith(document.body, customizer);
     *
     * console.log(el === document.body);
     * // => false
     * console.log(el.nodeName);
     * // => 'BODY'
     * console.log(el.childNodes.length);
     * // => 0
     */
    function cloneWith(value, customizer) {
      customizer = typeof customizer == 'function' ? customizer : undefined;
      return baseClone(value, CLONE_SYMBOLS_FLAG, customizer);
    }

    /**
     * This method is like `_.clone` except that it recursively clones `value`.
     *
     * @static
     * @memberOf _
     * @since 1.0.0
     * @category Lang
     * @param {*} value The value to recursively clone.
     * @returns {*} Returns the deep cloned value.
     * @see _.clone
     * @example
     *
     * var objects = [{ 'a': 1 }, { 'b': 2 }];
     *
     * var deep = _.cloneDeep(objects);
     * console.log(deep[0] === objects[0]);
     * // => false
     */
    function cloneDeep(value) {
      return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG);
    }

    /**
     * This method is like `_.cloneWith` except that it recursively clones `value`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to recursively clone.
     * @param {Function} [customizer] The function to customize cloning.
     * @returns {*} Returns the deep cloned value.
     * @see _.cloneWith
     * @example
     *
     * function customizer(value) {
     *   if (_.isElement(value)) {
     *     return value.cloneNode(true);
     *   }
     * }
     *
     * var el = _.cloneDeepWith(document.body, customizer);
     *
     * console.log(el === document.body);
     * // => false
     * console.log(el.nodeName);
     * // => 'BODY'
     * console.log(el.childNodes.length);
     * // => 20
     */
    function cloneDeepWith(value, customizer) {
      customizer = typeof customizer == 'function' ? customizer : undefined;
      return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG, customizer);
    }

    /**
     * Checks if `object` conforms to `source` by invoking the predicate
     * properties of `source` with the corresponding property values of `object`.
     *
     * **Note:** This method is equivalent to `_.conforms` when `source` is
     * partially applied.
     *
     * @static
     * @memberOf _
     * @since 4.14.0
     * @category Lang
     * @param {Object} object The object to inspect.
     * @param {Object} source The object of property predicates to conform to.
     * @returns {boolean} Returns `true` if `object` conforms, else `false`.
     * @example
     *
     * var object = { 'a': 1, 'b': 2 };
     *
     * _.conformsTo(object, { 'b': function(n) { return n > 1; } });
     * // => true
     *
     * _.conformsTo(object, { 'b': function(n) { return n > 2; } });
     * // => false
     */
    function conformsTo(object, source) {
      return source == null || baseConformsTo(object, source, keys(source));
    }

    /**
     * Performs a
     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * comparison between two values to determine if they are equivalent.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
     * @example
     *
     * var object = { 'a': 1 };
     * var other = { 'a': 1 };
     *
     * _.eq(object, object);
     * // => true
     *
     * _.eq(object, other);
     * // => false
     *
     * _.eq('a', 'a');
     * // => true
     *
     * _.eq('a', Object('a'));
     * // => false
     *
     * _.eq(NaN, NaN);
     * // => true
     */
    function eq(value, other) {
      return value === other || (value !== value && other !== other);
    }

    /**
     * Checks if `value` is greater than `other`.
     *
     * @static
     * @memberOf _
     * @since 3.9.0
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if `value` is greater than `other`,
     *  else `false`.
     * @see _.lt
     * @example
     *
     * _.gt(3, 1);
     * // => true
     *
     * _.gt(3, 3);
     * // => false
     *
     * _.gt(1, 3);
     * // => false
     */
    var gt = createRelationalOperation(baseGt);

    /**
     * Checks if `value` is greater than or equal to `other`.
     *
     * @static
     * @memberOf _
     * @since 3.9.0
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if `value` is greater than or equal to
     *  `other`, else `false`.
     * @see _.lte
     * @example
     *
     * _.gte(3, 1);
     * // => true
     *
     * _.gte(3, 3);
     * // => true
     *
     * _.gte(1, 3);
     * // => false
     */
    var gte = createRelationalOperation(function(value, other) {
      return value >= other;
    });

    /**
     * Checks if `value` is likely an `arguments` object.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an `arguments` object,
     *  else `false`.
     * @example
     *
     * _.isArguments(function() { return arguments; }());
     * // => true
     *
     * _.isArguments([1, 2, 3]);
     * // => false
     */
    var isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) {
      return isObjectLike(value) && hasOwnProperty.call(value, 'callee') &&
        !propertyIsEnumerable.call(value, 'callee');
    };

    /**
     * Checks if `value` is classified as an `Array` object.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an array, else `false`.
     * @example
     *
     * _.isArray([1, 2, 3]);
     * // => true
     *
     * _.isArray(document.body.children);
     * // => false
     *
     * _.isArray('abc');
     * // => false
     *
     * _.isArray(_.noop);
     * // => false
     */
    var isArray = Array.isArray;

    /**
     * Checks if `value` is classified as an `ArrayBuffer` object.
     *
     * @static
     * @memberOf _
     * @since 4.3.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.
     * @example
     *
     * _.isArrayBuffer(new ArrayBuffer(2));
     * // => true
     *
     * _.isArrayBuffer(new Array(2));
     * // => false
     */
    var isArrayBuffer = nodeIsArrayBuffer ? baseUnary(nodeIsArrayBuffer) : baseIsArrayBuffer;

    /**
     * Checks if `value` is array-like. A value is considered array-like if it's
     * not a function and has a `value.length` that's an integer greater than or
     * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is array-like, else `false`.
     * @example
     *
     * _.isArrayLike([1, 2, 3]);
     * // => true
     *
     * _.isArrayLike(document.body.children);
     * // => true
     *
     * _.isArrayLike('abc');
     * // => true
     *
     * _.isArrayLike(_.noop);
     * // => false
     */
    function isArrayLike(value) {
      return value != null && isLength(value.length) && !isFunction(value);
    }

    /**
     * This method is like `_.isArrayLike` except that it also checks if `value`
     * is an object.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an array-like object,
     *  else `false`.
     * @example
     *
     * _.isArrayLikeObject([1, 2, 3]);
     * // => true
     *
     * _.isArrayLikeObject(document.body.children);
     * // => true
     *
     * _.isArrayLikeObject('abc');
     * // => false
     *
     * _.isArrayLikeObject(_.noop);
     * // => false
     */
    function isArrayLikeObject(value) {
      return isObjectLike(value) && isArrayLike(value);
    }

    /**
     * Checks if `value` is classified as a boolean primitive or object.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a boolean, else `false`.
     * @example
     *
     * _.isBoolean(false);
     * // => true
     *
     * _.isBoolean(null);
     * // => false
     */
    function isBoolean(value) {
      return value === true || value === false ||
        (isObjectLike(value) && baseGetTag(value) == boolTag);
    }

    /**
     * Checks if `value` is a buffer.
     *
     * @static
     * @memberOf _
     * @since 4.3.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.
     * @example
     *
     * _.isBuffer(new Buffer(2));
     * // => true
     *
     * _.isBuffer(new Uint8Array(2));
     * // => false
     */
    var isBuffer = nativeIsBuffer || stubFalse;

    /**
     * Checks if `value` is classified as a `Date` object.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a date object, else `false`.
     * @example
     *
     * _.isDate(new Date);
     * // => true
     *
     * _.isDate('Mon April 23 2012');
     * // => false
     */
    var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate;

    /**
     * Checks if `value` is likely a DOM element.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a DOM element, else `false`.
     * @example
     *
     * _.isElement(document.body);
     * // => true
     *
     * _.isElement('<body>');
     * // => false
     */
    function isElement(value) {
      return isObjectLike(value) && value.nodeType === 1 && !isPlainObject(value);
    }

    /**
     * Checks if `value` is an empty object, collection, map, or set.
     *
     * Objects are considered empty if they have no own enumerable string keyed
     * properties.
     *
     * Array-like values such as `arguments` objects, arrays, buffers, strings, or
     * jQuery-like collections are considered empty if they have a `length` of `0`.
     * Similarly, maps and sets are considered empty if they have a `size` of `0`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is empty, else `false`.
     * @example
     *
     * _.isEmpty(null);
     * // => true
     *
     * _.isEmpty(true);
     * // => true
     *
     * _.isEmpty(1);
     * // => true
     *
     * _.isEmpty([1, 2, 3]);
     * // => false
     *
     * _.isEmpty({ 'a': 1 });
     * // => false
     */
    function isEmpty(value) {
      if (value == null) {
        return true;
      }
      if (isArrayLike(value) &&
          (isArray(value) || typeof value == 'string' || typeof value.splice == 'function' ||
            isBuffer(value) || isTypedArray(value) || isArguments(value))) {
        return !value.length;
      }
      var tag = getTag(value);
      if (tag == mapTag || tag == setTag) {
        return !value.size;
      }
      if (isPrototype(value)) {
        return !baseKeys(value).length;
      }
      for (var key in value) {
        if (hasOwnProperty.call(value, key)) {
          return false;
        }
      }
      return true;
    }

    /**
     * Performs a deep comparison between two values to determine if they are
     * equivalent.
     *
     * **Note:** This method supports comparing arrays, array buffers, booleans,
     * date objects, error objects, maps, numbers, `Object` objects, regexes,
     * sets, strings, symbols, and typed arrays. `Object` objects are compared
     * by their own, not inherited, enumerable properties. Functions and DOM
     * nodes are compared by strict equality, i.e. `===`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
     * @example
     *
     * var object = { 'a': 1 };
     * var other = { 'a': 1 };
     *
     * _.isEqual(object, other);
     * // => true
     *
     * object === other;
     * // => false
     */
    function isEqual(value, other) {
      return baseIsEqual(value, other);
    }

    /**
     * This method is like `_.isEqual` except that it accepts `customizer` which
     * is invoked to compare values. If `customizer` returns `undefined`, comparisons
     * are handled by the method instead. The `customizer` is invoked with up to
     * six arguments: (objValue, othValue [, index|key, object, other, stack]).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @param {Function} [customizer] The function to customize comparisons.
     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
     * @example
     *
     * function isGreeting(value) {
     *   return /^h(?:i|ello)$/.test(value);
     * }
     *
     * function customizer(objValue, othValue) {
     *   if (isGreeting(objValue) && isGreeting(othValue)) {
     *     return true;
     *   }
     * }
     *
     * var array = ['hello', 'goodbye'];
     * var other = ['hi', 'goodbye'];
     *
     * _.isEqualWith(array, other, customizer);
     * // => true
     */
    function isEqualWith(value, other, customizer) {
      customizer = typeof customizer == 'function' ? customizer : undefined;
      var result = customizer ? customizer(value, other) : undefined;
      return result === undefined ? baseIsEqual(value, other, undefined, customizer) : !!result;
    }

    /**
     * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`,
     * `SyntaxError`, `TypeError`, or `URIError` object.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an error object, else `false`.
     * @example
     *
     * _.isError(new Error);
     * // => true
     *
     * _.isError(Error);
     * // => false
     */
    function isError(value) {
      if (!isObjectLike(value)) {
        return false;
      }
      var tag = baseGetTag(value);
      return tag == errorTag || tag == domExcTag ||
        (typeof value.message == 'string' && typeof value.name == 'string' && !isPlainObject(value));
    }

    /**
     * Checks if `value` is a finite primitive number.
     *
     * **Note:** This method is based on
     * [`Number.isFinite`](https://mdn.io/Number/isFinite).
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a finite number, else `false`.
     * @example
     *
     * _.isFinite(3);
     * // => true
     *
     * _.isFinite(Number.MIN_VALUE);
     * // => true
     *
     * _.isFinite(Infinity);
     * // => false
     *
     * _.isFinite('3');
     * // => false
     */
    function isFinite(value) {
      return typeof value == 'number' && nativeIsFinite(value);
    }

    /**
     * Checks if `value` is classified as a `Function` object.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a function, else `false`.
     * @example
     *
     * _.isFunction(_);
     * // => true
     *
     * _.isFunction(/abc/);
     * // => false
     */
    function isFunction(value) {
      if (!isObject(value)) {
        return false;
      }
      // The use of `Object#toString` avoids issues with the `typeof` operator
      // in Safari 9 which returns 'object' for typed arrays and other constructors.
      var tag = baseGetTag(value);
      return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;
    }

    /**
     * Checks if `value` is an integer.
     *
     * **Note:** This method is based on
     * [`Number.isInteger`](https://mdn.io/Number/isInteger).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an integer, else `false`.
     * @example
     *
     * _.isInteger(3);
     * // => true
     *
     * _.isInteger(Number.MIN_VALUE);
     * // => false
     *
     * _.isInteger(Infinity);
     * // => false
     *
     * _.isInteger('3');
     * // => false
     */
    function isInteger(value) {
      return typeof value == 'number' && value == toInteger(value);
    }

    /**
     * Checks if `value` is a valid array-like length.
     *
     * **Note:** This method is loosely based on
     * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
     * @example
     *
     * _.isLength(3);
     * // => true
     *
     * _.isLength(Number.MIN_VALUE);
     * // => false
     *
     * _.isLength(Infinity);
     * // => false
     *
     * _.isLength('3');
     * // => false
     */
    function isLength(value) {
      return typeof value == 'number' &&
        value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
    }

    /**
     * Checks if `value` is the
     * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)
     * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an object, else `false`.
     * @example
     *
     * _.isObject({});
     * // => true
     *
     * _.isObject([1, 2, 3]);
     * // => true
     *
     * _.isObject(_.noop);
     * // => true
     *
     * _.isObject(null);
     * // => false
     */
    function isObject(value) {
      var type = typeof value;
      return value != null && (type == 'object' || type == 'function');
    }

    /**
     * Checks if `value` is object-like. A value is object-like if it's not `null`
     * and has a `typeof` result of "object".
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
     * @example
     *
     * _.isObjectLike({});
     * // => true
     *
     * _.isObjectLike([1, 2, 3]);
     * // => true
     *
     * _.isObjectLike(_.noop);
     * // => false
     *
     * _.isObjectLike(null);
     * // => false
     */
    function isObjectLike(value) {
      return value != null && typeof value == 'object';
    }

    /**
     * Checks if `value` is classified as a `Map` object.
     *
     * @static
     * @memberOf _
     * @since 4.3.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a map, else `false`.
     * @example
     *
     * _.isMap(new Map);
     * // => true
     *
     * _.isMap(new WeakMap);
     * // => false
     */
    var isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap;

    /**
     * Performs a partial deep comparison between `object` and `source` to
     * determine if `object` contains equivalent property values.
     *
     * **Note:** This method is equivalent to `_.matches` when `source` is
     * partially applied.
     *
     * Partial comparisons will match empty array and empty object `source`
     * values against any array or object value, respectively. See `_.isEqual`
     * for a list of supported value comparisons.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Lang
     * @param {Object} object The object to inspect.
     * @param {Object} source The object of property values to match.
     * @returns {boolean} Returns `true` if `object` is a match, else `false`.
     * @example
     *
     * var object = { 'a': 1, 'b': 2 };
     *
     * _.isMatch(object, { 'b': 2 });
     * // => true
     *
     * _.isMatch(object, { 'b': 1 });
     * // => false
     */
    function isMatch(object, source) {
      return object === source || baseIsMatch(object, source, getMatchData(source));
    }

    /**
     * This method is like `_.isMatch` except that it accepts `customizer` which
     * is invoked to compare values. If `customizer` returns `undefined`, comparisons
     * are handled by the method instead. The `customizer` is invoked with five
     * arguments: (objValue, srcValue, index|key, object, source).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {Object} object The object to inspect.
     * @param {Object} source The object of property values to match.
     * @param {Function} [customizer] The function to customize comparisons.
     * @returns {boolean} Returns `true` if `object` is a match, else `false`.
     * @example
     *
     * function isGreeting(value) {
     *   return /^h(?:i|ello)$/.test(value);
     * }
     *
     * function customizer(objValue, srcValue) {
     *   if (isGreeting(objValue) && isGreeting(srcValue)) {
     *     return true;
     *   }
     * }
     *
     * var object = { 'greeting': 'hello' };
     * var source = { 'greeting': 'hi' };
     *
     * _.isMatchWith(object, source, customizer);
     * // => true
     */
    function isMatchWith(object, source, customizer) {
      customizer = typeof customizer == 'function' ? customizer : undefined;
      return baseIsMatch(object, source, getMatchData(source), customizer);
    }

    /**
     * Checks if `value` is `NaN`.
     *
     * **Note:** This method is based on
     * [`Number.isNaN`](https://mdn.io/Number/isNaN) and is not the same as
     * global [`isNaN`](https://mdn.io/isNaN) which returns `true` for
     * `undefined` and other non-number values.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.
     * @example
     *
     * _.isNaN(NaN);
     * // => true
     *
     * _.isNaN(new Number(NaN));
     * // => true
     *
     * isNaN(undefined);
     * // => true
     *
     * _.isNaN(undefined);
     * // => false
     */
    function isNaN(value) {
      // An `NaN` primitive is the only value that is not equal to itself.
      // Perform the `toStringTag` check first to avoid errors with some
      // ActiveX objects in IE.
      return isNumber(value) && value != +value;
    }

    /**
     * Checks if `value` is a pristine native function.
     *
     * **Note:** This method can't reliably detect native functions in the presence
     * of the core-js package because core-js circumvents this kind of detection.
     * Despite multiple requests, the core-js maintainer has made it clear: any
     * attempt to fix the detection will be obstructed. As a result, we're left
     * with little choice but to throw an error. Unfortunately, this also affects
     * packages, like [babel-polyfill](https://www.npmjs.com/package/babel-polyfill),
     * which rely on core-js.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a native function,
     *  else `false`.
     * @example
     *
     * _.isNative(Array.prototype.push);
     * // => true
     *
     * _.isNative(_);
     * // => false
     */
    function isNative(value) {
      if (isMaskable(value)) {
        throw new Error(CORE_ERROR_TEXT);
      }
      return baseIsNative(value);
    }

    /**
     * Checks if `value` is `null`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is `null`, else `false`.
     * @example
     *
     * _.isNull(null);
     * // => true
     *
     * _.isNull(void 0);
     * // => false
     */
    function isNull(value) {
      return value === null;
    }

    /**
     * Checks if `value` is `null` or `undefined`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is nullish, else `false`.
     * @example
     *
     * _.isNil(null);
     * // => true
     *
     * _.isNil(void 0);
     * // => true
     *
     * _.isNil(NaN);
     * // => false
     */
    function isNil(value) {
      return value == null;
    }

    /**
     * Checks if `value` is classified as a `Number` primitive or object.
     *
     * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are
     * classified as numbers, use the `_.isFinite` method.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a number, else `false`.
     * @example
     *
     * _.isNumber(3);
     * // => true
     *
     * _.isNumber(Number.MIN_VALUE);
     * // => true
     *
     * _.isNumber(Infinity);
     * // => true
     *
     * _.isNumber('3');
     * // => false
     */
    function isNumber(value) {
      return typeof value == 'number' ||
        (isObjectLike(value) && baseGetTag(value) == numberTag);
    }

    /**
     * Checks if `value` is a plain object, that is, an object created by the
     * `Object` constructor or one with a `[[Prototype]]` of `null`.
     *
     * @static
     * @memberOf _
     * @since 0.8.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     * }
     *
     * _.isPlainObject(new Foo);
     * // => false
     *
     * _.isPlainObject([1, 2, 3]);
     * // => false
     *
     * _.isPlainObject({ 'x': 0, 'y': 0 });
     * // => true
     *
     * _.isPlainObject(Object.create(null));
     * // => true
     */
    function isPlainObject(value) {
      if (!isObjectLike(value) || baseGetTag(value) != objectTag) {
        return false;
      }
      var proto = getPrototype(value);
      if (proto === null) {
        return true;
      }
      var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;
      return typeof Ctor == 'function' && Ctor instanceof Ctor &&
        funcToString.call(Ctor) == objectCtorString;
    }

    /**
     * Checks if `value` is classified as a `RegExp` object.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.
     * @example
     *
     * _.isRegExp(/abc/);
     * // => true
     *
     * _.isRegExp('/abc/');
     * // => false
     */
    var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp;

    /**
     * Checks if `value` is a safe integer. An integer is safe if it's an IEEE-754
     * double precision number which isn't the result of a rounded unsafe integer.
     *
     * **Note:** This method is based on
     * [`Number.isSafeInteger`](https://mdn.io/Number/isSafeInteger).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a safe integer, else `false`.
     * @example
     *
     * _.isSafeInteger(3);
     * // => true
     *
     * _.isSafeInteger(Number.MIN_VALUE);
     * // => false
     *
     * _.isSafeInteger(Infinity);
     * // => false
     *
     * _.isSafeInteger('3');
     * // => false
     */
    function isSafeInteger(value) {
      return isInteger(value) && value >= -MAX_SAFE_INTEGER && value <= MAX_SAFE_INTEGER;
    }

    /**
     * Checks if `value` is classified as a `Set` object.
     *
     * @static
     * @memberOf _
     * @since 4.3.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a set, else `false`.
     * @example
     *
     * _.isSet(new Set);
     * // => true
     *
     * _.isSet(new WeakSet);
     * // => false
     */
    var isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet;

    /**
     * Checks if `value` is classified as a `String` primitive or object.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a string, else `false`.
     * @example
     *
     * _.isString('abc');
     * // => true
     *
     * _.isString(1);
     * // => false
     */
    function isString(value) {
      return typeof value == 'string' ||
        (!isArray(value) && isObjectLike(value) && baseGetTag(value) == stringTag);
    }

    /**
     * Checks if `value` is classified as a `Symbol` primitive or object.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.
     * @example
     *
     * _.isSymbol(Symbol.iterator);
     * // => true
     *
     * _.isSymbol('abc');
     * // => false
     */
    function isSymbol(value) {
      return typeof value == 'symbol' ||
        (isObjectLike(value) && baseGetTag(value) == symbolTag);
    }

    /**
     * Checks if `value` is classified as a typed array.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
     * @example
     *
     * _.isTypedArray(new Uint8Array);
     * // => true
     *
     * _.isTypedArray([]);
     * // => false
     */
    var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;

    /**
     * Checks if `value` is `undefined`.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`.
     * @example
     *
     * _.isUndefined(void 0);
     * // => true
     *
     * _.isUndefined(null);
     * // => false
     */
    function isUndefined(value) {
      return value === undefined;
    }

    /**
     * Checks if `value` is classified as a `WeakMap` object.
     *
     * @static
     * @memberOf _
     * @since 4.3.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a weak map, else `false`.
     * @example
     *
     * _.isWeakMap(new WeakMap);
     * // => true
     *
     * _.isWeakMap(new Map);
     * // => false
     */
    function isWeakMap(value) {
      return isObjectLike(value) && getTag(value) == weakMapTag;
    }

    /**
     * Checks if `value` is classified as a `WeakSet` object.
     *
     * @static
     * @memberOf _
     * @since 4.3.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a weak set, else `false`.
     * @example
     *
     * _.isWeakSet(new WeakSet);
     * // => true
     *
     * _.isWeakSet(new Set);
     * // => false
     */
    function isWeakSet(value) {
      return isObjectLike(value) && baseGetTag(value) == weakSetTag;
    }

    /**
     * Checks if `value` is less than `other`.
     *
     * @static
     * @memberOf _
     * @since 3.9.0
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if `value` is less than `other`,
     *  else `false`.
     * @see _.gt
     * @example
     *
     * _.lt(1, 3);
     * // => true
     *
     * _.lt(3, 3);
     * // => false
     *
     * _.lt(3, 1);
     * // => false
     */
    var lt = createRelationalOperation(baseLt);

    /**
     * Checks if `value` is less than or equal to `other`.
     *
     * @static
     * @memberOf _
     * @since 3.9.0
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if `value` is less than or equal to
     *  `other`, else `false`.
     * @see _.gte
     * @example
     *
     * _.lte(1, 3);
     * // => true
     *
     * _.lte(3, 3);
     * // => true
     *
     * _.lte(3, 1);
     * // => false
     */
    var lte = createRelationalOperation(function(value, other) {
      return value <= other;
    });

    /**
     * Converts `value` to an array.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {Array} Returns the converted array.
     * @example
     *
     * _.toArray({ 'a': 1, 'b': 2 });
     * // => [1, 2]
     *
     * _.toArray('abc');
     * // => ['a', 'b', 'c']
     *
     * _.toArray(1);
     * // => []
     *
     * _.toArray(null);
     * // => []
     */
    function toArray(value) {
      if (!value) {
        return [];
      }
      if (isArrayLike(value)) {
        return isString(value) ? stringToArray(value) : copyArray(value);
      }
      if (symIterator && value[symIterator]) {
        return iteratorToArray(value[symIterator]());
      }
      var tag = getTag(value),
          func = tag == mapTag ? mapToArray : (tag == setTag ? setToArray : values);

      return func(value);
    }

    /**
     * Converts `value` to a finite number.
     *
     * @static
     * @memberOf _
     * @since 4.12.0
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {number} Returns the converted number.
     * @example
     *
     * _.toFinite(3.2);
     * // => 3.2
     *
     * _.toFinite(Number.MIN_VALUE);
     * // => 5e-324
     *
     * _.toFinite(Infinity);
     * // => 1.7976931348623157e+308
     *
     * _.toFinite('3.2');
     * // => 3.2
     */
    function toFinite(value) {
      if (!value) {
        return value === 0 ? value : 0;
      }
      value = toNumber(value);
      if (value === INFINITY || value === -INFINITY) {
        var sign = (value < 0 ? -1 : 1);
        return sign * MAX_INTEGER;
      }
      return value === value ? value : 0;
    }

    /**
     * Converts `value` to an integer.
     *
     * **Note:** This method is loosely based on
     * [`ToInteger`](http://www.ecma-international.org/ecma-262/7.0/#sec-tointeger).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {number} Returns the converted integer.
     * @example
     *
     * _.toInteger(3.2);
     * // => 3
     *
     * _.toInteger(Number.MIN_VALUE);
     * // => 0
     *
     * _.toInteger(Infinity);
     * // => 1.7976931348623157e+308
     *
     * _.toInteger('3.2');
     * // => 3
     */
    function toInteger(value) {
      var result = toFinite(value),
          remainder = result % 1;

      return result === result ? (remainder ? result - remainder : result) : 0;
    }

    /**
     * Converts `value` to an integer suitable for use as the length of an
     * array-like object.
     *
     * **Note:** This method is based on
     * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {number} Returns the converted integer.
     * @example
     *
     * _.toLength(3.2);
     * // => 3
     *
     * _.toLength(Number.MIN_VALUE);
     * // => 0
     *
     * _.toLength(Infinity);
     * // => 4294967295
     *
     * _.toLength('3.2');
     * // => 3
     */
    function toLength(value) {
      return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0;
    }

    /**
     * Converts `value` to a number.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to process.
     * @returns {number} Returns the number.
     * @example
     *
     * _.toNumber(3.2);
     * // => 3.2
     *
     * _.toNumber(Number.MIN_VALUE);
     * // => 5e-324
     *
     * _.toNumber(Infinity);
     * // => Infinity
     *
     * _.toNumber('3.2');
     * // => 3.2
     */
    function toNumber(value) {
      if (typeof value == 'number') {
        return value;
      }
      if (isSymbol(value)) {
        return NAN;
      }
      if (isObject(value)) {
        var other = typeof value.valueOf == 'function' ? value.valueOf() : value;
        value = isObject(other) ? (other + '') : other;
      }
      if (typeof value != 'string') {
        return value === 0 ? value : +value;
      }
      value = value.replace(reTrim, '');
      var isBinary = reIsBinary.test(value);
      return (isBinary || reIsOctal.test(value))
        ? freeParseInt(value.slice(2), isBinary ? 2 : 8)
        : (reIsBadHex.test(value) ? NAN : +value);
    }

    /**
     * Converts `value` to a plain object flattening inherited enumerable string
     * keyed properties of `value` to own properties of the plain object.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {Object} Returns the converted plain object.
     * @example
     *
     * function Foo() {
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.assign({ 'a': 1 }, new Foo);
     * // => { 'a': 1, 'b': 2 }
     *
     * _.assign({ 'a': 1 }, _.toPlainObject(new Foo));
     * // => { 'a': 1, 'b': 2, 'c': 3 }
     */
    function toPlainObject(value) {
      return copyObject(value, keysIn(value));
    }

    /**
     * Converts `value` to a safe integer. A safe integer can be compared and
     * represented correctly.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {number} Returns the converted integer.
     * @example
     *
     * _.toSafeInteger(3.2);
     * // => 3
     *
     * _.toSafeInteger(Number.MIN_VALUE);
     * // => 0
     *
     * _.toSafeInteger(Infinity);
     * // => 9007199254740991
     *
     * _.toSafeInteger('3.2');
     * // => 3
     */
    function toSafeInteger(value) {
      return value
        ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER)
        : (value === 0 ? value : 0);
    }

    /**
     * Converts `value` to a string. An empty string is returned for `null`
     * and `undefined` values. The sign of `-0` is preserved.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {string} Returns the converted string.
     * @example
     *
     * _.toString(null);
     * // => ''
     *
     * _.toString(-0);
     * // => '-0'
     *
     * _.toString([1, 2, 3]);
     * // => '1,2,3'
     */
    function toString(value) {
      return value == null ? '' : baseToString(value);
    }

    /*------------------------------------------------------------------------*/

    /**
     * Assigns own enumerable string keyed properties of source objects to the
     * destination object. Source objects are applied from left to right.
     * Subsequent sources overwrite property assignments of previous sources.
     *
     * **Note:** This method mutates `object` and is loosely based on
     * [`Object.assign`](https://mdn.io/Object/assign).
     *
     * @static
     * @memberOf _
     * @since 0.10.0
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} [sources] The source objects.
     * @returns {Object} Returns `object`.
     * @see _.assignIn
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     * }
     *
     * function Bar() {
     *   this.c = 3;
     * }
     *
     * Foo.prototype.b = 2;
     * Bar.prototype.d = 4;
     *
     * _.assign({ 'a': 0 }, new Foo, new Bar);
     * // => { 'a': 1, 'c': 3 }
     */
    var assign = createAssigner(function(object, source) {
      if (isPrototype(source) || isArrayLike(source)) {
        copyObject(source, keys(source), object);
        return;
      }
      for (var key in source) {
        if (hasOwnProperty.call(source, key)) {
          assignValue(object, key, source[key]);
        }
      }
    });

    /**
     * This method is like `_.assign` except that it iterates over own and
     * inherited source properties.
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @alias extend
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} [sources] The source objects.
     * @returns {Object} Returns `object`.
     * @see _.assign
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     * }
     *
     * function Bar() {
     *   this.c = 3;
     * }
     *
     * Foo.prototype.b = 2;
     * Bar.prototype.d = 4;
     *
     * _.assignIn({ 'a': 0 }, new Foo, new Bar);
     * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4 }
     */
    var assignIn = createAssigner(function(object, source) {
      copyObject(source, keysIn(source), object);
    });

    /**
     * This method is like `_.assignIn` except that it accepts `customizer`
     * which is invoked to produce the assigned values. If `customizer` returns
     * `undefined`, assignment is handled by the method instead. The `customizer`
     * is invoked with five arguments: (objValue, srcValue, key, object, source).
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @alias extendWith
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} sources The source objects.
     * @param {Function} [customizer] The function to customize assigned values.
     * @returns {Object} Returns `object`.
     * @see _.assignWith
     * @example
     *
     * function customizer(objValue, srcValue) {
     *   return _.isUndefined(objValue) ? srcValue : objValue;
     * }
     *
     * var defaults = _.partialRight(_.assignInWith, customizer);
     *
     * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
     * // => { 'a': 1, 'b': 2 }
     */
    var assignInWith = createAssigner(function(object, source, srcIndex, customizer) {
      copyObject(source, keysIn(source), object, customizer);
    });

    /**
     * This method is like `_.assign` except that it accepts `customizer`
     * which is invoked to produce the assigned values. If `customizer` returns
     * `undefined`, assignment is handled by the method instead. The `customizer`
     * is invoked with five arguments: (objValue, srcValue, key, object, source).
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} sources The source objects.
     * @param {Function} [customizer] The function to customize assigned values.
     * @returns {Object} Returns `object`.
     * @see _.assignInWith
     * @example
     *
     * function customizer(objValue, srcValue) {
     *   return _.isUndefined(objValue) ? srcValue : objValue;
     * }
     *
     * var defaults = _.partialRight(_.assignWith, customizer);
     *
     * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
     * // => { 'a': 1, 'b': 2 }
     */
    var assignWith = createAssigner(function(object, source, srcIndex, customizer) {
      copyObject(source, keys(source), object, customizer);
    });

    /**
     * Creates an array of values corresponding to `paths` of `object`.
     *
     * @static
     * @memberOf _
     * @since 1.0.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {...(string|string[])} [paths] The property paths to pick.
     * @returns {Array} Returns the picked values.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };
     *
     * _.at(object, ['a[0].b.c', 'a[1]']);
     * // => [3, 4]
     */
    var at = flatRest(baseAt);

    /**
     * Creates an object that inherits from the `prototype` object. If a
     * `properties` object is given, its own enumerable string keyed properties
     * are assigned to the created object.
     *
     * @static
     * @memberOf _
     * @since 2.3.0
     * @category Object
     * @param {Object} prototype The object to inherit from.
     * @param {Object} [properties] The properties to assign to the object.
     * @returns {Object} Returns the new object.
     * @example
     *
     * function Shape() {
     *   this.x = 0;
     *   this.y = 0;
     * }
     *
     * function Circle() {
     *   Shape.call(this);
     * }
     *
     * Circle.prototype = _.create(Shape.prototype, {
     *   'constructor': Circle
     * });
     *
     * var circle = new Circle;
     * circle instanceof Circle;
     * // => true
     *
     * circle instanceof Shape;
     * // => true
     */
    function create(prototype, properties) {
      var result = baseCreate(prototype);
      return properties == null ? result : baseAssign(result, properties);
    }

    /**
     * Assigns own and inherited enumerable string keyed properties of source
     * objects to the destination object for all destination properties that
     * resolve to `undefined`. Source objects are applied from left to right.
     * Once a property is set, additional values of the same property are ignored.
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} [sources] The source objects.
     * @returns {Object} Returns `object`.
     * @see _.defaultsDeep
     * @example
     *
     * _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
     * // => { 'a': 1, 'b': 2 }
     */
    var defaults = baseRest(function(object, sources) {
      object = Object(object);

      var index = -1;
      var length = sources.length;
      var guard = length > 2 ? sources[2] : undefined;

      if (guard && isIterateeCall(sources[0], sources[1], guard)) {
        length = 1;
      }

      while (++index < length) {
        var source = sources[index];
        var props = keysIn(source);
        var propsIndex = -1;
        var propsLength = props.length;

        while (++propsIndex < propsLength) {
          var key = props[propsIndex];
          var value = object[key];

          if (value === undefined ||
              (eq(value, objectProto[key]) && !hasOwnProperty.call(object, key))) {
            object[key] = source[key];
          }
        }
      }

      return object;
    });

    /**
     * This method is like `_.defaults` except that it recursively assigns
     * default properties.
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 3.10.0
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} [sources] The source objects.
     * @returns {Object} Returns `object`.
     * @see _.defaults
     * @example
     *
     * _.defaultsDeep({ 'a': { 'b': 2 } }, { 'a': { 'b': 1, 'c': 3 } });
     * // => { 'a': { 'b': 2, 'c': 3 } }
     */
    var defaultsDeep = baseRest(function(args) {
      args.push(undefined, customDefaultsMerge);
      return apply(mergeWith, undefined, args);
    });

    /**
     * This method is like `_.find` except that it returns the key of the first
     * element `predicate` returns truthy for instead of the element itself.
     *
     * @static
     * @memberOf _
     * @since 1.1.0
     * @category Object
     * @param {Object} object The object to inspect.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {string|undefined} Returns the key of the matched element,
     *  else `undefined`.
     * @example
     *
     * var users = {
     *   'barney':  { 'age': 36, 'active': true },
     *   'fred':    { 'age': 40, 'active': false },
     *   'pebbles': { 'age': 1,  'active': true }
     * };
     *
     * _.findKey(users, function(o) { return o.age < 40; });
     * // => 'barney' (iteration order is not guaranteed)
     *
     * // The `_.matches` iteratee shorthand.
     * _.findKey(users, { 'age': 1, 'active': true });
     * // => 'pebbles'
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.findKey(users, ['active', false]);
     * // => 'fred'
     *
     * // The `_.property` iteratee shorthand.
     * _.findKey(users, 'active');
     * // => 'barney'
     */
    function findKey(object, predicate) {
      return baseFindKey(object, getIteratee(predicate, 3), baseForOwn);
    }

    /**
     * This method is like `_.findKey` except that it iterates over elements of
     * a collection in the opposite order.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Object
     * @param {Object} object The object to inspect.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {string|undefined} Returns the key of the matched element,
     *  else `undefined`.
     * @example
     *
     * var users = {
     *   'barney':  { 'age': 36, 'active': true },
     *   'fred':    { 'age': 40, 'active': false },
     *   'pebbles': { 'age': 1,  'active': true }
     * };
     *
     * _.findLastKey(users, function(o) { return o.age < 40; });
     * // => returns 'pebbles' assuming `_.findKey` returns 'barney'
     *
     * // The `_.matches` iteratee shorthand.
     * _.findLastKey(users, { 'age': 36, 'active': true });
     * // => 'barney'
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.findLastKey(users, ['active', false]);
     * // => 'fred'
     *
     * // The `_.property` iteratee shorthand.
     * _.findLastKey(users, 'active');
     * // => 'pebbles'
     */
    function findLastKey(object, predicate) {
      return baseFindKey(object, getIteratee(predicate, 3), baseForOwnRight);
    }

    /**
     * Iterates over own and inherited enumerable string keyed properties of an
     * object and invokes `iteratee` for each property. The iteratee is invoked
     * with three arguments: (value, key, object). Iteratee functions may exit
     * iteration early by explicitly returning `false`.
     *
     * @static
     * @memberOf _
     * @since 0.3.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Object} Returns `object`.
     * @see _.forInRight
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.forIn(new Foo, function(value, key) {
     *   console.log(key);
     * });
     * // => Logs 'a', 'b', then 'c' (iteration order is not guaranteed).
     */
    function forIn(object, iteratee) {
      return object == null
        ? object
        : baseFor(object, getIteratee(iteratee, 3), keysIn);
    }

    /**
     * This method is like `_.forIn` except that it iterates over properties of
     * `object` in the opposite order.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Object} Returns `object`.
     * @see _.forIn
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.forInRight(new Foo, function(value, key) {
     *   console.log(key);
     * });
     * // => Logs 'c', 'b', then 'a' assuming `_.forIn` logs 'a', 'b', then 'c'.
     */
    function forInRight(object, iteratee) {
      return object == null
        ? object
        : baseForRight(object, getIteratee(iteratee, 3), keysIn);
    }

    /**
     * Iterates over own enumerable string keyed properties of an object and
     * invokes `iteratee` for each property. The iteratee is invoked with three
     * arguments: (value, key, object). Iteratee functions may exit iteration
     * early by explicitly returning `false`.
     *
     * @static
     * @memberOf _
     * @since 0.3.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Object} Returns `object`.
     * @see _.forOwnRight
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.forOwn(new Foo, function(value, key) {
     *   console.log(key);
     * });
     * // => Logs 'a' then 'b' (iteration order is not guaranteed).
     */
    function forOwn(object, iteratee) {
      return object && baseForOwn(object, getIteratee(iteratee, 3));
    }

    /**
     * This method is like `_.forOwn` except that it iterates over properties of
     * `object` in the opposite order.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Object} Returns `object`.
     * @see _.forOwn
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.forOwnRight(new Foo, function(value, key) {
     *   console.log(key);
     * });
     * // => Logs 'b' then 'a' assuming `_.forOwn` logs 'a' then 'b'.
     */
    function forOwnRight(object, iteratee) {
      return object && baseForOwnRight(object, getIteratee(iteratee, 3));
    }

    /**
     * Creates an array of function property names from own enumerable properties
     * of `object`.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The object to inspect.
     * @returns {Array} Returns the function names.
     * @see _.functionsIn
     * @example
     *
     * function Foo() {
     *   this.a = _.constant('a');
     *   this.b = _.constant('b');
     * }
     *
     * Foo.prototype.c = _.constant('c');
     *
     * _.functions(new Foo);
     * // => ['a', 'b']
     */
    function functions(object) {
      return object == null ? [] : baseFunctions(object, keys(object));
    }

    /**
     * Creates an array of function property names from own and inherited
     * enumerable properties of `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The object to inspect.
     * @returns {Array} Returns the function names.
     * @see _.functions
     * @example
     *
     * function Foo() {
     *   this.a = _.constant('a');
     *   this.b = _.constant('b');
     * }
     *
     * Foo.prototype.c = _.constant('c');
     *
     * _.functionsIn(new Foo);
     * // => ['a', 'b', 'c']
     */
    function functionsIn(object) {
      return object == null ? [] : baseFunctions(object, keysIn(object));
    }

    /**
     * Gets the value at `path` of `object`. If the resolved value is
     * `undefined`, the `defaultValue` is returned in its place.
     *
     * @static
     * @memberOf _
     * @since 3.7.0
     * @category Object
     * @param {Object} object The object to query.
     * @param {Array|string} path The path of the property to get.
     * @param {*} [defaultValue] The value returned for `undefined` resolved values.
     * @returns {*} Returns the resolved value.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': 3 } }] };
     *
     * _.get(object, 'a[0].b.c');
     * // => 3
     *
     * _.get(object, ['a', '0', 'b', 'c']);
     * // => 3
     *
     * _.get(object, 'a.b.c', 'default');
     * // => 'default'
     */
    function get(object, path, defaultValue) {
      var result = object == null ? undefined : baseGet(object, path);
      return result === undefined ? defaultValue : result;
    }

    /**
     * Checks if `path` is a direct property of `object`.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The object to query.
     * @param {Array|string} path The path to check.
     * @returns {boolean} Returns `true` if `path` exists, else `false`.
     * @example
     *
     * var object = { 'a': { 'b': 2 } };
     * var other = _.create({ 'a': _.create({ 'b': 2 }) });
     *
     * _.has(object, 'a');
     * // => true
     *
     * _.has(object, 'a.b');
     * // => true
     *
     * _.has(object, ['a', 'b']);
     * // => true
     *
     * _.has(other, 'a');
     * // => false
     */
    function has(object, path) {
      return object != null && hasPath(object, path, baseHas);
    }

    /**
     * Checks if `path` is a direct or inherited property of `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The object to query.
     * @param {Array|string} path The path to check.
     * @returns {boolean} Returns `true` if `path` exists, else `false`.
     * @example
     *
     * var object = _.create({ 'a': _.create({ 'b': 2 }) });
     *
     * _.hasIn(object, 'a');
     * // => true
     *
     * _.hasIn(object, 'a.b');
     * // => true
     *
     * _.hasIn(object, ['a', 'b']);
     * // => true
     *
     * _.hasIn(object, 'b');
     * // => false
     */
    function hasIn(object, path) {
      return object != null && hasPath(object, path, baseHasIn);
    }

    /**
     * Creates an object composed of the inverted keys and values of `object`.
     * If `object` contains duplicate values, subsequent values overwrite
     * property assignments of previous values.
     *
     * @static
     * @memberOf _
     * @since 0.7.0
     * @category Object
     * @param {Object} object The object to invert.
     * @returns {Object} Returns the new inverted object.
     * @example
     *
     * var object = { 'a': 1, 'b': 2, 'c': 1 };
     *
     * _.invert(object);
     * // => { '1': 'c', '2': 'b' }
     */
    var invert = createInverter(function(result, value, key) {
      if (value != null &&
          typeof value.toString != 'function') {
        value = nativeObjectToString.call(value);
      }

      result[value] = key;
    }, constant(identity));

    /**
     * This method is like `_.invert` except that the inverted object is generated
     * from the results of running each element of `object` thru `iteratee`. The
     * corresponding inverted value of each inverted key is an array of keys
     * responsible for generating the inverted value. The iteratee is invoked
     * with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.1.0
     * @category Object
     * @param {Object} object The object to invert.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {Object} Returns the new inverted object.
     * @example
     *
     * var object = { 'a': 1, 'b': 2, 'c': 1 };
     *
     * _.invertBy(object);
     * // => { '1': ['a', 'c'], '2': ['b'] }
     *
     * _.invertBy(object, function(value) {
     *   return 'group' + value;
     * });
     * // => { 'group1': ['a', 'c'], 'group2': ['b'] }
     */
    var invertBy = createInverter(function(result, value, key) {
      if (value != null &&
          typeof value.toString != 'function') {
        value = nativeObjectToString.call(value);
      }

      if (hasOwnProperty.call(result, value)) {
        result[value].push(key);
      } else {
        result[value] = [key];
      }
    }, getIteratee);

    /**
     * Invokes the method at `path` of `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The object to query.
     * @param {Array|string} path The path of the method to invoke.
     * @param {...*} [args] The arguments to invoke the method with.
     * @returns {*} Returns the result of the invoked method.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': [1, 2, 3, 4] } }] };
     *
     * _.invoke(object, 'a[0].b.c.slice', 1, 3);
     * // => [2, 3]
     */
    var invoke = baseRest(baseInvoke);

    /**
     * Creates an array of the own enumerable property names of `object`.
     *
     * **Note:** Non-object values are coerced to objects. See the
     * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
     * for more details.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.keys(new Foo);
     * // => ['a', 'b'] (iteration order is not guaranteed)
     *
     * _.keys('hi');
     * // => ['0', '1']
     */
    function keys(object) {
      return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);
    }

    /**
     * Creates an array of the own and inherited enumerable property names of `object`.
     *
     * **Note:** Non-object values are coerced to objects.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Object
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.keysIn(new Foo);
     * // => ['a', 'b', 'c'] (iteration order is not guaranteed)
     */
    function keysIn(object) {
      return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object);
    }

    /**
     * The opposite of `_.mapValues`; this method creates an object with the
     * same values as `object` and keys generated by running each own enumerable
     * string keyed property of `object` thru `iteratee`. The iteratee is invoked
     * with three arguments: (value, key, object).
     *
     * @static
     * @memberOf _
     * @since 3.8.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Object} Returns the new mapped object.
     * @see _.mapValues
     * @example
     *
     * _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) {
     *   return key + value;
     * });
     * // => { 'a1': 1, 'b2': 2 }
     */
    function mapKeys(object, iteratee) {
      var result = {};
      iteratee = getIteratee(iteratee, 3);

      baseForOwn(object, function(value, key, object) {
        baseAssignValue(result, iteratee(value, key, object), value);
      });
      return result;
    }

    /**
     * Creates an object with the same keys as `object` and values generated
     * by running each own enumerable string keyed property of `object` thru
     * `iteratee`. The iteratee is invoked with three arguments:
     * (value, key, object).
     *
     * @static
     * @memberOf _
     * @since 2.4.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Object} Returns the new mapped object.
     * @see _.mapKeys
     * @example
     *
     * var users = {
     *   'fred':    { 'user': 'fred',    'age': 40 },
     *   'pebbles': { 'user': 'pebbles', 'age': 1 }
     * };
     *
     * _.mapValues(users, function(o) { return o.age; });
     * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
     *
     * // The `_.property` iteratee shorthand.
     * _.mapValues(users, 'age');
     * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
     */
    function mapValues(object, iteratee) {
      var result = {};
      iteratee = getIteratee(iteratee, 3);

      baseForOwn(object, function(value, key, object) {
        baseAssignValue(result, key, iteratee(value, key, object));
      });
      return result;
    }

    /**
     * This method is like `_.assign` except that it recursively merges own and
     * inherited enumerable string keyed properties of source objects into the
     * destination object. Source properties that resolve to `undefined` are
     * skipped if a destination value exists. Array and plain object properties
     * are merged recursively. Other objects and value types are overridden by
     * assignment. Source objects are applied from left to right. Subsequent
     * sources overwrite property assignments of previous sources.
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 0.5.0
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} [sources] The source objects.
     * @returns {Object} Returns `object`.
     * @example
     *
     * var object = {
     *   'a': [{ 'b': 2 }, { 'd': 4 }]
     * };
     *
     * var other = {
     *   'a': [{ 'c': 3 }, { 'e': 5 }]
     * };
     *
     * _.merge(object, other);
     * // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] }
     */
    var merge = createAssigner(function(object, source, srcIndex) {
      baseMerge(object, source, srcIndex);
    });

    /**
     * This method is like `_.merge` except that it accepts `customizer` which
     * is invoked to produce the merged values of the destination and source
     * properties. If `customizer` returns `undefined`, merging is handled by the
     * method instead. The `customizer` is invoked with six arguments:
     * (objValue, srcValue, key, object, source, stack).
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} sources The source objects.
     * @param {Function} customizer The function to customize assigned values.
     * @returns {Object} Returns `object`.
     * @example
     *
     * function customizer(objValue, srcValue) {
     *   if (_.isArray(objValue)) {
     *     return objValue.concat(srcValue);
     *   }
     * }
     *
     * var object = { 'a': [1], 'b': [2] };
     * var other = { 'a': [3], 'b': [4] };
     *
     * _.mergeWith(object, other, customizer);
     * // => { 'a': [1, 3], 'b': [2, 4] }
     */
    var mergeWith = createAssigner(function(object, source, srcIndex, customizer) {
      baseMerge(object, source, srcIndex, customizer);
    });

    /**
     * The opposite of `_.pick`; this method creates an object composed of the
     * own and inherited enumerable property paths of `object` that are not omitted.
     *
     * **Note:** This method is considerably slower than `_.pick`.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The source object.
     * @param {...(string|string[])} [paths] The property paths to omit.
     * @returns {Object} Returns the new object.
     * @example
     *
     * var object = { 'a': 1, 'b': '2', 'c': 3 };
     *
     * _.omit(object, ['a', 'c']);
     * // => { 'b': '2' }
     */
    var omit = flatRest(function(object, paths) {
      var result = {};
      if (object == null) {
        return result;
      }
      var isDeep = false;
      paths = arrayMap(paths, function(path) {
        path = castPath(path, object);
        isDeep || (isDeep = path.length > 1);
        return path;
      });
      copyObject(object, getAllKeysIn(object), result);
      if (isDeep) {
        result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, customOmitClone);
      }
      var length = paths.length;
      while (length--) {
        baseUnset(result, paths[length]);
      }
      return result;
    });

    /**
     * The opposite of `_.pickBy`; this method creates an object composed of
     * the own and inherited enumerable string keyed properties of `object` that
     * `predicate` doesn't return truthy for. The predicate is invoked with two
     * arguments: (value, key).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The source object.
     * @param {Function} [predicate=_.identity] The function invoked per property.
     * @returns {Object} Returns the new object.
     * @example
     *
     * var object = { 'a': 1, 'b': '2', 'c': 3 };
     *
     * _.omitBy(object, _.isNumber);
     * // => { 'b': '2' }
     */
    function omitBy(object, predicate) {
      return pickBy(object, negate(getIteratee(predicate)));
    }

    /**
     * Creates an object composed of the picked `object` properties.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The source object.
     * @param {...(string|string[])} [paths] The property paths to pick.
     * @returns {Object} Returns the new object.
     * @example
     *
     * var object = { 'a': 1, 'b': '2', 'c': 3 };
     *
     * _.pick(object, ['a', 'c']);
     * // => { 'a': 1, 'c': 3 }
     */
    var pick = flatRest(function(object, paths) {
      return object == null ? {} : basePick(object, paths);
    });

    /**
     * Creates an object composed of the `object` properties `predicate` returns
     * truthy for. The predicate is invoked with two arguments: (value, key).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The source object.
     * @param {Function} [predicate=_.identity] The function invoked per property.
     * @returns {Object} Returns the new object.
     * @example
     *
     * var object = { 'a': 1, 'b': '2', 'c': 3 };
     *
     * _.pickBy(object, _.isNumber);
     * // => { 'a': 1, 'c': 3 }
     */
    function pickBy(object, predicate) {
      if (object == null) {
        return {};
      }
      var props = arrayMap(getAllKeysIn(object), function(prop) {
        return [prop];
      });
      predicate = getIteratee(predicate);
      return basePickBy(object, props, function(value, path) {
        return predicate(value, path[0]);
      });
    }

    /**
     * This method is like `_.get` except that if the resolved value is a
     * function it's invoked with the `this` binding of its parent object and
     * its result is returned.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The object to query.
     * @param {Array|string} path The path of the property to resolve.
     * @param {*} [defaultValue] The value returned for `undefined` resolved values.
     * @returns {*} Returns the resolved value.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] };
     *
     * _.result(object, 'a[0].b.c1');
     * // => 3
     *
     * _.result(object, 'a[0].b.c2');
     * // => 4
     *
     * _.result(object, 'a[0].b.c3', 'default');
     * // => 'default'
     *
     * _.result(object, 'a[0].b.c3', _.constant('default'));
     * // => 'default'
     */
    function result(object, path, defaultValue) {
      path = castPath(path, object);

      var index = -1,
          length = path.length;

      // Ensure the loop is entered when path is empty.
      if (!length) {
        length = 1;
        object = undefined;
      }
      while (++index < length) {
        var value = object == null ? undefined : object[toKey(path[index])];
        if (value === undefined) {
          index = length;
          value = defaultValue;
        }
        object = isFunction(value) ? value.call(object) : value;
      }
      return object;
    }

    /**
     * Sets the value at `path` of `object`. If a portion of `path` doesn't exist,
     * it's created. Arrays are created for missing index properties while objects
     * are created for all other missing properties. Use `_.setWith` to customize
     * `path` creation.
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 3.7.0
     * @category Object
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to set.
     * @param {*} value The value to set.
     * @returns {Object} Returns `object`.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': 3 } }] };
     *
     * _.set(object, 'a[0].b.c', 4);
     * console.log(object.a[0].b.c);
     * // => 4
     *
     * _.set(object, ['x', '0', 'y', 'z'], 5);
     * console.log(object.x[0].y.z);
     * // => 5
     */
    function set(object, path, value) {
      return object == null ? object : baseSet(object, path, value);
    }

    /**
     * This method is like `_.set` except that it accepts `customizer` which is
     * invoked to produce the objects of `path`.  If `customizer` returns `undefined`
     * path creation is handled by the method instead. The `customizer` is invoked
     * with three arguments: (nsValue, key, nsObject).
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to set.
     * @param {*} value The value to set.
     * @param {Function} [customizer] The function to customize assigned values.
     * @returns {Object} Returns `object`.
     * @example
     *
     * var object = {};
     *
     * _.setWith(object, '[0][1]', 'a', Object);
     * // => { '0': { '1': 'a' } }
     */
    function setWith(object, path, value, customizer) {
      customizer = typeof customizer == 'function' ? customizer : undefined;
      return object == null ? object : baseSet(object, path, value, customizer);
    }

    /**
     * Creates an array of own enumerable string keyed-value pairs for `object`
     * which can be consumed by `_.fromPairs`. If `object` is a map or set, its
     * entries are returned.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @alias entries
     * @category Object
     * @param {Object} object The object to query.
     * @returns {Array} Returns the key-value pairs.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.toPairs(new Foo);
     * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed)
     */
    var toPairs = createToPairs(keys);

    /**
     * Creates an array of own and inherited enumerable string keyed-value pairs
     * for `object` which can be consumed by `_.fromPairs`. If `object` is a map
     * or set, its entries are returned.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @alias entriesIn
     * @category Object
     * @param {Object} object The object to query.
     * @returns {Array} Returns the key-value pairs.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.toPairsIn(new Foo);
     * // => [['a', 1], ['b', 2], ['c', 3]] (iteration order is not guaranteed)
     */
    var toPairsIn = createToPairs(keysIn);

    /**
     * An alternative to `_.reduce`; this method transforms `object` to a new
     * `accumulator` object which is the result of running each of its own
     * enumerable string keyed properties thru `iteratee`, with each invocation
     * potentially mutating the `accumulator` object. If `accumulator` is not
     * provided, a new object with the same `[[Prototype]]` will be used. The
     * iteratee is invoked with four arguments: (accumulator, value, key, object).
     * Iteratee functions may exit iteration early by explicitly returning `false`.
     *
     * @static
     * @memberOf _
     * @since 1.3.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @param {*} [accumulator] The custom accumulator value.
     * @returns {*} Returns the accumulated value.
     * @example
     *
     * _.transform([2, 3, 4], function(result, n) {
     *   result.push(n *= n);
     *   return n % 2 == 0;
     * }, []);
     * // => [4, 9]
     *
     * _.transform({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {
     *   (result[value] || (result[value] = [])).push(key);
     * }, {});
     * // => { '1': ['a', 'c'], '2': ['b'] }
     */
    function transform(object, iteratee, accumulator) {
      var isArr = isArray(object),
          isArrLike = isArr || isBuffer(object) || isTypedArray(object);

      iteratee = getIteratee(iteratee, 4);
      if (accumulator == null) {
        var Ctor = object && object.constructor;
        if (isArrLike) {
          accumulator = isArr ? new Ctor : [];
        }
        else if (isObject(object)) {
          accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {};
        }
        else {
          accumulator = {};
        }
      }
      (isArrLike ? arrayEach : baseForOwn)(object, function(value, index, object) {
        return iteratee(accumulator, value, index, object);
      });
      return accumulator;
    }

    /**
     * Removes the property at `path` of `object`.
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to unset.
     * @returns {boolean} Returns `true` if the property is deleted, else `false`.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': 7 } }] };
     * _.unset(object, 'a[0].b.c');
     * // => true
     *
     * console.log(object);
     * // => { 'a': [{ 'b': {} }] };
     *
     * _.unset(object, ['a', '0', 'b', 'c']);
     * // => true
     *
     * console.log(object);
     * // => { 'a': [{ 'b': {} }] };
     */
    function unset(object, path) {
      return object == null ? true : baseUnset(object, path);
    }

    /**
     * This method is like `_.set` except that accepts `updater` to produce the
     * value to set. Use `_.updateWith` to customize `path` creation. The `updater`
     * is invoked with one argument: (value).
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.6.0
     * @category Object
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to set.
     * @param {Function} updater The function to produce the updated value.
     * @returns {Object} Returns `object`.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': 3 } }] };
     *
     * _.update(object, 'a[0].b.c', function(n) { return n * n; });
     * console.log(object.a[0].b.c);
     * // => 9
     *
     * _.update(object, 'x[0].y.z', function(n) { return n ? n + 1 : 0; });
     * console.log(object.x[0].y.z);
     * // => 0
     */
    function update(object, path, updater) {
      return object == null ? object : baseUpdate(object, path, castFunction(updater));
    }

    /**
     * This method is like `_.update` except that it accepts `customizer` which is
     * invoked to produce the objects of `path`.  If `customizer` returns `undefined`
     * path creation is handled by the method instead. The `customizer` is invoked
     * with three arguments: (nsValue, key, nsObject).
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.6.0
     * @category Object
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to set.
     * @param {Function} updater The function to produce the updated value.
     * @param {Function} [customizer] The function to customize assigned values.
     * @returns {Object} Returns `object`.
     * @example
     *
     * var object = {};
     *
     * _.updateWith(object, '[0][1]', _.constant('a'), Object);
     * // => { '0': { '1': 'a' } }
     */
    function updateWith(object, path, updater, customizer) {
      customizer = typeof customizer == 'function' ? customizer : undefined;
      return object == null ? object : baseUpdate(object, path, castFunction(updater), customizer);
    }

    /**
     * Creates an array of the own enumerable string keyed property values of `object`.
     *
     * **Note:** Non-object values are coerced to objects.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property values.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.values(new Foo);
     * // => [1, 2] (iteration order is not guaranteed)
     *
     * _.values('hi');
     * // => ['h', 'i']
     */
    function values(object) {
      return object == null ? [] : baseValues(object, keys(object));
    }

    /**
     * Creates an array of the own and inherited enumerable string keyed property
     * values of `object`.
     *
     * **Note:** Non-object values are coerced to objects.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Object
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property values.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.valuesIn(new Foo);
     * // => [1, 2, 3] (iteration order is not guaranteed)
     */
    function valuesIn(object) {
      return object == null ? [] : baseValues(object, keysIn(object));
    }

    /*------------------------------------------------------------------------*/

    /**
     * Clamps `number` within the inclusive `lower` and `upper` bounds.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Number
     * @param {number} number The number to clamp.
     * @param {number} [lower] The lower bound.
     * @param {number} upper The upper bound.
     * @returns {number} Returns the clamped number.
     * @example
     *
     * _.clamp(-10, -5, 5);
     * // => -5
     *
     * _.clamp(10, -5, 5);
     * // => 5
     */
    function clamp(number, lower, upper) {
      if (upper === undefined) {
        upper = lower;
        lower = undefined;
      }
      if (upper !== undefined) {
        upper = toNumber(upper);
        upper = upper === upper ? upper : 0;
      }
      if (lower !== undefined) {
        lower = toNumber(lower);
        lower = lower === lower ? lower : 0;
      }
      return baseClamp(toNumber(number), lower, upper);
    }

    /**
     * Checks if `n` is between `start` and up to, but not including, `end`. If
     * `end` is not specified, it's set to `start` with `start` then set to `0`.
     * If `start` is greater than `end` the params are swapped to support
     * negative ranges.
     *
     * @static
     * @memberOf _
     * @since 3.3.0
     * @category Number
     * @param {number} number The number to check.
     * @param {number} [start=0] The start of the range.
     * @param {number} end The end of the range.
     * @returns {boolean} Returns `true` if `number` is in the range, else `false`.
     * @see _.range, _.rangeRight
     * @example
     *
     * _.inRange(3, 2, 4);
     * // => true
     *
     * _.inRange(4, 8);
     * // => true
     *
     * _.inRange(4, 2);
     * // => false
     *
     * _.inRange(2, 2);
     * // => false
     *
     * _.inRange(1.2, 2);
     * // => true
     *
     * _.inRange(5.2, 4);
     * // => false
     *
     * _.inRange(-3, -2, -6);
     * // => true
     */
    function inRange(number, start, end) {
      start = toFinite(start);
      if (end === undefined) {
        end = start;
        start = 0;
      } else {
        end = toFinite(end);
      }
      number = toNumber(number);
      return baseInRange(number, start, end);
    }

    /**
     * Produces a random number between the inclusive `lower` and `upper` bounds.
     * If only one argument is provided a number between `0` and the given number
     * is returned. If `floating` is `true`, or either `lower` or `upper` are
     * floats, a floating-point number is returned instead of an integer.
     *
     * **Note:** JavaScript follows the IEEE-754 standard for resolving
     * floating-point values which can produce unexpected results.
     *
     * @static
     * @memberOf _
     * @since 0.7.0
     * @category Number
     * @param {number} [lower=0] The lower bound.
     * @param {number} [upper=1] The upper bound.
     * @param {boolean} [floating] Specify returning a floating-point number.
     * @returns {number} Returns the random number.
     * @example
     *
     * _.random(0, 5);
     * // => an integer between 0 and 5
     *
     * _.random(5);
     * // => also an integer between 0 and 5
     *
     * _.random(5, true);
     * // => a floating-point number between 0 and 5
     *
     * _.random(1.2, 5.2);
     * // => a floating-point number between 1.2 and 5.2
     */
    function random(lower, upper, floating) {
      if (floating && typeof floating != 'boolean' && isIterateeCall(lower, upper, floating)) {
        upper = floating = undefined;
      }
      if (floating === undefined) {
        if (typeof upper == 'boolean') {
          floating = upper;
          upper = undefined;
        }
        else if (typeof lower == 'boolean') {
          floating = lower;
          lower = undefined;
        }
      }
      if (lower === undefined && upper === undefined) {
        lower = 0;
        upper = 1;
      }
      else {
        lower = toFinite(lower);
        if (upper === undefined) {
          upper = lower;
          lower = 0;
        } else {
          upper = toFinite(upper);
        }
      }
      if (lower > upper) {
        var temp = lower;
        lower = upper;
        upper = temp;
      }
      if (floating || lower % 1 || upper % 1) {
        var rand = nativeRandom();
        return nativeMin(lower + (rand * (upper - lower + freeParseFloat('1e-' + ((rand + '').length - 1)))), upper);
      }
      return baseRandom(lower, upper);
    }

    /*------------------------------------------------------------------------*/

    /**
     * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the camel cased string.
     * @example
     *
     * _.camelCase('Foo Bar');
     * // => 'fooBar'
     *
     * _.camelCase('--foo-bar--');
     * // => 'fooBar'
     *
     * _.camelCase('__FOO_BAR__');
     * // => 'fooBar'
     */
    var camelCase = createCompounder(function(result, word, index) {
      word = word.toLowerCase();
      return result + (index ? capitalize(word) : word);
    });

    /**
     * Converts the first character of `string` to upper case and the remaining
     * to lower case.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to capitalize.
     * @returns {string} Returns the capitalized string.
     * @example
     *
     * _.capitalize('FRED');
     * // => 'Fred'
     */
    function capitalize(string) {
      return upperFirst(toString(string).toLowerCase());
    }

    /**
     * Deburrs `string` by converting
     * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)
     * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A)
     * letters to basic Latin letters and removing
     * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to deburr.
     * @returns {string} Returns the deburred string.
     * @example
     *
     * _.deburr('déjà vu');
     * // => 'deja vu'
     */
    function deburr(string) {
      string = toString(string);
      return string && string.replace(reLatin, deburrLetter).replace(reComboMark, '');
    }

    /**
     * Checks if `string` ends with the given target string.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to inspect.
     * @param {string} [target] The string to search for.
     * @param {number} [position=string.length] The position to search up to.
     * @returns {boolean} Returns `true` if `string` ends with `target`,
     *  else `false`.
     * @example
     *
     * _.endsWith('abc', 'c');
     * // => true
     *
     * _.endsWith('abc', 'b');
     * // => false
     *
     * _.endsWith('abc', 'b', 2);
     * // => true
     */
    function endsWith(string, target, position) {
      string = toString(string);
      target = baseToString(target);

      var length = string.length;
      position = position === undefined
        ? length
        : baseClamp(toInteger(position), 0, length);

      var end = position;
      position -= target.length;
      return position >= 0 && string.slice(position, end) == target;
    }

    /**
     * Converts the characters "&", "<", ">", '"', and "'" in `string` to their
     * corresponding HTML entities.
     *
     * **Note:** No other characters are escaped. To escape additional
     * characters use a third-party library like [_he_](https://mths.be/he).
     *
     * Though the ">" character is escaped for symmetry, characters like
     * ">" and "/" don't need escaping in HTML and have no special meaning
     * unless they're part of a tag or unquoted attribute value. See
     * [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands)
     * (under "semi-related fun fact") for more details.
     *
     * When working with HTML you should always
     * [quote attribute values](http://wonko.com/post/html-escaping) to reduce
     * XSS vectors.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category String
     * @param {string} [string=''] The string to escape.
     * @returns {string} Returns the escaped string.
     * @example
     *
     * _.escape('fred, barney, & pebbles');
     * // => 'fred, barney, &amp; pebbles'
     */
    function escape(string) {
      string = toString(string);
      return (string && reHasUnescapedHtml.test(string))
        ? string.replace(reUnescapedHtml, escapeHtmlChar)
        : string;
    }

    /**
     * Escapes the `RegExp` special characters "^", "$", "\", ".", "*", "+",
     * "?", "(", ")", "[", "]", "{", "}", and "|" in `string`.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to escape.
     * @returns {string} Returns the escaped string.
     * @example
     *
     * _.escapeRegExp('[lodash](https://lodash.com/)');
     * // => '\[lodash\]\(https://lodash\.com/\)'
     */
    function escapeRegExp(string) {
      string = toString(string);
      return (string && reHasRegExpChar.test(string))
        ? string.replace(reRegExpChar, '\\$&')
        : string;
    }

    /**
     * Converts `string` to
     * [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the kebab cased string.
     * @example
     *
     * _.kebabCase('Foo Bar');
     * // => 'foo-bar'
     *
     * _.kebabCase('fooBar');
     * // => 'foo-bar'
     *
     * _.kebabCase('__FOO_BAR__');
     * // => 'foo-bar'
     */
    var kebabCase = createCompounder(function(result, word, index) {
      return result + (index ? '-' : '') + word.toLowerCase();
    });

    /**
     * Converts `string`, as space separated words, to lower case.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the lower cased string.
     * @example
     *
     * _.lowerCase('--Foo-Bar--');
     * // => 'foo bar'
     *
     * _.lowerCase('fooBar');
     * // => 'foo bar'
     *
     * _.lowerCase('__FOO_BAR__');
     * // => 'foo bar'
     */
    var lowerCase = createCompounder(function(result, word, index) {
      return result + (index ? ' ' : '') + word.toLowerCase();
    });

    /**
     * Converts the first character of `string` to lower case.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the converted string.
     * @example
     *
     * _.lowerFirst('Fred');
     * // => 'fred'
     *
     * _.lowerFirst('FRED');
     * // => 'fRED'
     */
    var lowerFirst = createCaseFirst('toLowerCase');

    /**
     * Pads `string` on the left and right sides if it's shorter than `length`.
     * Padding characters are truncated if they can't be evenly divided by `length`.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to pad.
     * @param {number} [length=0] The padding length.
     * @param {string} [chars=' '] The string used as padding.
     * @returns {string} Returns the padded string.
     * @example
     *
     * _.pad('abc', 8);
     * // => '  abc   '
     *
     * _.pad('abc', 8, '_-');
     * // => '_-abc_-_'
     *
     * _.pad('abc', 3);
     * // => 'abc'
     */
    function pad(string, length, chars) {
      string = toString(string);
      length = toInteger(length);

      var strLength = length ? stringSize(string) : 0;
      if (!length || strLength >= length) {
        return string;
      }
      var mid = (length - strLength) / 2;
      return (
        createPadding(nativeFloor(mid), chars) +
        string +
        createPadding(nativeCeil(mid), chars)
      );
    }

    /**
     * Pads `string` on the right side if it's shorter than `length`. Padding
     * characters are truncated if they exceed `length`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to pad.
     * @param {number} [length=0] The padding length.
     * @param {string} [chars=' '] The string used as padding.
     * @returns {string} Returns the padded string.
     * @example
     *
     * _.padEnd('abc', 6);
     * // => 'abc   '
     *
     * _.padEnd('abc', 6, '_-');
     * // => 'abc_-_'
     *
     * _.padEnd('abc', 3);
     * // => 'abc'
     */
    function padEnd(string, length, chars) {
      string = toString(string);
      length = toInteger(length);

      var strLength = length ? stringSize(string) : 0;
      return (length && strLength < length)
        ? (string + createPadding(length - strLength, chars))
        : string;
    }

    /**
     * Pads `string` on the left side if it's shorter than `length`. Padding
     * characters are truncated if they exceed `length`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to pad.
     * @param {number} [length=0] The padding length.
     * @param {string} [chars=' '] The string used as padding.
     * @returns {string} Returns the padded string.
     * @example
     *
     * _.padStart('abc', 6);
     * // => '   abc'
     *
     * _.padStart('abc', 6, '_-');
     * // => '_-_abc'
     *
     * _.padStart('abc', 3);
     * // => 'abc'
     */
    function padStart(string, length, chars) {
      string = toString(string);
      length = toInteger(length);

      var strLength = length ? stringSize(string) : 0;
      return (length && strLength < length)
        ? (createPadding(length - strLength, chars) + string)
        : string;
    }

    /**
     * Converts `string` to an integer of the specified radix. If `radix` is
     * `undefined` or `0`, a `radix` of `10` is used unless `value` is a
     * hexadecimal, in which case a `radix` of `16` is used.
     *
     * **Note:** This method aligns with the
     * [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`.
     *
     * @static
     * @memberOf _
     * @since 1.1.0
     * @category String
     * @param {string} string The string to convert.
     * @param {number} [radix=10] The radix to interpret `value` by.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {number} Returns the converted integer.
     * @example
     *
     * _.parseInt('08');
     * // => 8
     *
     * _.map(['6', '08', '10'], _.parseInt);
     * // => [6, 8, 10]
     */
    function parseInt(string, radix, guard) {
      if (guard || radix == null) {
        radix = 0;
      } else if (radix) {
        radix = +radix;
      }
      return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0);
    }

    /**
     * Repeats the given string `n` times.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to repeat.
     * @param {number} [n=1] The number of times to repeat the string.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {string} Returns the repeated string.
     * @example
     *
     * _.repeat('*', 3);
     * // => '***'
     *
     * _.repeat('abc', 2);
     * // => 'abcabc'
     *
     * _.repeat('abc', 0);
     * // => ''
     */
    function repeat(string, n, guard) {
      if ((guard ? isIterateeCall(string, n, guard) : n === undefined)) {
        n = 1;
      } else {
        n = toInteger(n);
      }
      return baseRepeat(toString(string), n);
    }

    /**
     * Replaces matches for `pattern` in `string` with `replacement`.
     *
     * **Note:** This method is based on
     * [`String#replace`](https://mdn.io/String/replace).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to modify.
     * @param {RegExp|string} pattern The pattern to replace.
     * @param {Function|string} replacement The match replacement.
     * @returns {string} Returns the modified string.
     * @example
     *
     * _.replace('Hi Fred', 'Fred', 'Barney');
     * // => 'Hi Barney'
     */
    function replace() {
      var args = arguments,
          string = toString(args[0]);

      return args.length < 3 ? string : string.replace(args[1], args[2]);
    }

    /**
     * Converts `string` to
     * [snake case](https://en.wikipedia.org/wiki/Snake_case).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the snake cased string.
     * @example
     *
     * _.snakeCase('Foo Bar');
     * // => 'foo_bar'
     *
     * _.snakeCase('fooBar');
     * // => 'foo_bar'
     *
     * _.snakeCase('--FOO-BAR--');
     * // => 'foo_bar'
     */
    var snakeCase = createCompounder(function(result, word, index) {
      return result + (index ? '_' : '') + word.toLowerCase();
    });

    /**
     * Splits `string` by `separator`.
     *
     * **Note:** This method is based on
     * [`String#split`](https://mdn.io/String/split).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to split.
     * @param {RegExp|string} separator The separator pattern to split by.
     * @param {number} [limit] The length to truncate results to.
     * @returns {Array} Returns the string segments.
     * @example
     *
     * _.split('a-b-c', '-', 2);
     * // => ['a', 'b']
     */
    function split(string, separator, limit) {
      if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) {
        separator = limit = undefined;
      }
      limit = limit === undefined ? MAX_ARRAY_LENGTH : limit >>> 0;
      if (!limit) {
        return [];
      }
      string = toString(string);
      if (string && (
            typeof separator == 'string' ||
            (separator != null && !isRegExp(separator))
          )) {
        separator = baseToString(separator);
        if (!separator && hasUnicode(string)) {
          return castSlice(stringToArray(string), 0, limit);
        }
      }
      return string.split(separator, limit);
    }

    /**
     * Converts `string` to
     * [start case](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage).
     *
     * @static
     * @memberOf _
     * @since 3.1.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the start cased string.
     * @example
     *
     * _.startCase('--foo-bar--');
     * // => 'Foo Bar'
     *
     * _.startCase('fooBar');
     * // => 'Foo Bar'
     *
     * _.startCase('__FOO_BAR__');
     * // => 'FOO BAR'
     */
    var startCase = createCompounder(function(result, word, index) {
      return result + (index ? ' ' : '') + upperFirst(word);
    });

    /**
     * Checks if `string` starts with the given target string.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to inspect.
     * @param {string} [target] The string to search for.
     * @param {number} [position=0] The position to search from.
     * @returns {boolean} Returns `true` if `string` starts with `target`,
     *  else `false`.
     * @example
     *
     * _.startsWith('abc', 'a');
     * // => true
     *
     * _.startsWith('abc', 'b');
     * // => false
     *
     * _.startsWith('abc', 'b', 1);
     * // => true
     */
    function startsWith(string, target, position) {
      string = toString(string);
      position = position == null
        ? 0
        : baseClamp(toInteger(position), 0, string.length);

      target = baseToString(target);
      return string.slice(position, position + target.length) == target;
    }

    /**
     * Creates a compiled template function that can interpolate data properties
     * in "interpolate" delimiters, HTML-escape interpolated data properties in
     * "escape" delimiters, and execute JavaScript in "evaluate" delimiters. Data
     * properties may be accessed as free variables in the template. If a setting
     * object is given, it takes precedence over `_.templateSettings` values.
     *
     * **Note:** In the development build `_.template` utilizes
     * [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl)
     * for easier debugging.
     *
     * For more information on precompiling templates see
     * [lodash's custom builds documentation](https://lodash.com/custom-builds).
     *
     * For more information on Chrome extension sandboxes see
     * [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval).
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category String
     * @param {string} [string=''] The template string.
     * @param {Object} [options={}] The options object.
     * @param {RegExp} [options.escape=_.templateSettings.escape]
     *  The HTML "escape" delimiter.
     * @param {RegExp} [options.evaluate=_.templateSettings.evaluate]
     *  The "evaluate" delimiter.
     * @param {Object} [options.imports=_.templateSettings.imports]
     *  An object to import into the template as free variables.
     * @param {RegExp} [options.interpolate=_.templateSettings.interpolate]
     *  The "interpolate" delimiter.
     * @param {string} [options.sourceURL='lodash.templateSources[n]']
     *  The sourceURL of the compiled template.
     * @param {string} [options.variable='obj']
     *  The data object variable name.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Function} Returns the compiled template function.
     * @example
     *
     * // Use the "interpolate" delimiter to create a compiled template.
     * var compiled = _.template('hello <%= user %>!');
     * compiled({ 'user': 'fred' });
     * // => 'hello fred!'
     *
     * // Use the HTML "escape" delimiter to escape data property values.
     * var compiled = _.template('<b><%- value %></b>');
     * compiled({ 'value': '<script>' });
     * // => '<b>&lt;script&gt;</b>'
     *
     * // Use the "evaluate" delimiter to execute JavaScript and generate HTML.
     * var compiled = _.template('<% _.forEach(users, function(user) { %><li><%- user %></li><% }); %>');
     * compiled({ 'users': ['fred', 'barney'] });
     * // => '<li>fred</li><li>barney</li>'
     *
     * // Use the internal `print` function in "evaluate" delimiters.
     * var compiled = _.template('<% print("hello " + user); %>!');
     * compiled({ 'user': 'barney' });
     * // => 'hello barney!'
     *
     * // Use the ES template literal delimiter as an "interpolate" delimiter.
     * // Disable support by replacing the "interpolate" delimiter.
     * var compiled = _.template('hello ${ user }!');
     * compiled({ 'user': 'pebbles' });
     * // => 'hello pebbles!'
     *
     * // Use backslashes to treat delimiters as plain text.
     * var compiled = _.template('<%= "\\<%- value %\\>" %>');
     * compiled({ 'value': 'ignored' });
     * // => '<%- value %>'
     *
     * // Use the `imports` option to import `jQuery` as `jq`.
     * var text = '<% jq.each(users, function(user) { %><li><%- user %></li><% }); %>';
     * var compiled = _.template(text, { 'imports': { 'jq': jQuery } });
     * compiled({ 'users': ['fred', 'barney'] });
     * // => '<li>fred</li><li>barney</li>'
     *
     * // Use the `sourceURL` option to specify a custom sourceURL for the template.
     * var compiled = _.template('hello <%= user %>!', { 'sourceURL': '/basic/greeting.jst' });
     * compiled(data);
     * // => Find the source of "greeting.jst" under the Sources tab or Resources panel of the web inspector.
     *
     * // Use the `variable` option to ensure a with-statement isn't used in the compiled template.
     * var compiled = _.template('hi <%= data.user %>!', { 'variable': 'data' });
     * compiled.source;
     * // => function(data) {
     * //   var __t, __p = '';
     * //   __p += 'hi ' + ((__t = ( data.user )) == null ? '' : __t) + '!';
     * //   return __p;
     * // }
     *
     * // Use custom template delimiters.
     * _.templateSettings.interpolate = /{{([\s\S]+?)}}/g;
     * var compiled = _.template('hello {{ user }}!');
     * compiled({ 'user': 'mustache' });
     * // => 'hello mustache!'
     *
     * // Use the `source` property to inline compiled templates for meaningful
     * // line numbers in error messages and stack traces.
     * fs.writeFileSync(path.join(process.cwd(), 'jst.js'), '\
     *   var JST = {\
     *     "main": ' + _.template(mainText).source + '\
     *   };\
     * ');
     */
    function template(string, options, guard) {
      // Based on John Resig's `tmpl` implementation
      // (http://ejohn.org/blog/javascript-micro-templating/)
      // and Laura Doktorova's doT.js (https://github.com/olado/doT).
      var settings = lodash.templateSettings;

      if (guard && isIterateeCall(string, options, guard)) {
        options = undefined;
      }
      string = toString(string);
      options = assignInWith({}, options, settings, customDefaultsAssignIn);

      var imports = assignInWith({}, options.imports, settings.imports, customDefaultsAssignIn),
          importsKeys = keys(imports),
          importsValues = baseValues(imports, importsKeys);

      var isEscaping,
          isEvaluating,
          index = 0,
          interpolate = options.interpolate || reNoMatch,
          source = "__p += '";

      // Compile the regexp to match each delimiter.
      var reDelimiters = RegExp(
        (options.escape || reNoMatch).source + '|' +
        interpolate.source + '|' +
        (interpolate === reInterpolate ? reEsTemplate : reNoMatch).source + '|' +
        (options.evaluate || reNoMatch).source + '|$'
      , 'g');

      // Use a sourceURL for easier debugging.
      // The sourceURL gets injected into the source that's eval-ed, so be careful
      // with lookup (in case of e.g. prototype pollution), and strip newlines if any.
      // A newline wouldn't be a valid sourceURL anyway, and it'd enable code injection.
      var sourceURL = '//# sourceURL=' +
        (hasOwnProperty.call(options, 'sourceURL')
          ? (options.sourceURL + '').replace(/[\r\n]/g, ' ')
          : ('lodash.templateSources[' + (++templateCounter) + ']')
        ) + '\n';

      string.replace(reDelimiters, function(match, escapeValue, interpolateValue, esTemplateValue, evaluateValue, offset) {
        interpolateValue || (interpolateValue = esTemplateValue);

        // Escape characters that can't be included in string literals.
        source += string.slice(index, offset).replace(reUnescapedString, escapeStringChar);

        // Replace delimiters with snippets.
        if (escapeValue) {
          isEscaping = true;
          source += "' +\n__e(" + escapeValue + ") +\n'";
        }
        if (evaluateValue) {
          isEvaluating = true;
          source += "';\n" + evaluateValue + ";\n__p += '";
        }
        if (interpolateValue) {
          source += "' +\n((__t = (" + interpolateValue + ")) == null ? '' : __t) +\n'";
        }
        index = offset + match.length;

        // The JS engine embedded in Adobe products needs `match` returned in
        // order to produce the correct `offset` value.
        return match;
      });

      source += "';\n";

      // If `variable` is not specified wrap a with-statement around the generated
      // code to add the data object to the top of the scope chain.
      // Like with sourceURL, we take care to not check the option's prototype,
      // as this configuration is a code injection vector.
      var variable = hasOwnProperty.call(options, 'variable') && options.variable;
      if (!variable) {
        source = 'with (obj) {\n' + source + '\n}\n';
      }
      // Cleanup code by stripping empty strings.
      source = (isEvaluating ? source.replace(reEmptyStringLeading, '') : source)
        .replace(reEmptyStringMiddle, '$1')
        .replace(reEmptyStringTrailing, '$1;');

      // Frame code as the function body.
      source = 'function(' + (variable || 'obj') + ') {\n' +
        (variable
          ? ''
          : 'obj || (obj = {});\n'
        ) +
        "var __t, __p = ''" +
        (isEscaping
           ? ', __e = _.escape'
           : ''
        ) +
        (isEvaluating
          ? ', __j = Array.prototype.join;\n' +
            "function print() { __p += __j.call(arguments, '') }\n"
          : ';\n'
        ) +
        source +
        'return __p\n}';

      var result = attempt(function() {
        return Function(importsKeys, sourceURL + 'return ' + source)
          .apply(undefined, importsValues);
      });

      // Provide the compiled function's source by its `toString` method or
      // the `source` property as a convenience for inlining compiled templates.
      result.source = source;
      if (isError(result)) {
        throw result;
      }
      return result;
    }

    /**
     * Converts `string`, as a whole, to lower case just like
     * [String#toLowerCase](https://mdn.io/toLowerCase).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the lower cased string.
     * @example
     *
     * _.toLower('--Foo-Bar--');
     * // => '--foo-bar--'
     *
     * _.toLower('fooBar');
     * // => 'foobar'
     *
     * _.toLower('__FOO_BAR__');
     * // => '__foo_bar__'
     */
    function toLower(value) {
      return toString(value).toLowerCase();
    }

    /**
     * Converts `string`, as a whole, to upper case just like
     * [String#toUpperCase](https://mdn.io/toUpperCase).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the upper cased string.
     * @example
     *
     * _.toUpper('--foo-bar--');
     * // => '--FOO-BAR--'
     *
     * _.toUpper('fooBar');
     * // => 'FOOBAR'
     *
     * _.toUpper('__foo_bar__');
     * // => '__FOO_BAR__'
     */
    function toUpper(value) {
      return toString(value).toUpperCase();
    }

    /**
     * Removes leading and trailing whitespace or specified characters from `string`.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to trim.
     * @param {string} [chars=whitespace] The characters to trim.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {string} Returns the trimmed string.
     * @example
     *
     * _.trim('  abc  ');
     * // => 'abc'
     *
     * _.trim('-_-abc-_-', '_-');
     * // => 'abc'
     *
     * _.map(['  foo  ', '  bar  '], _.trim);
     * // => ['foo', 'bar']
     */
    function trim(string, chars, guard) {
      string = toString(string);
      if (string && (guard || chars === undefined)) {
        return string.replace(reTrim, '');
      }
      if (!string || !(chars = baseToString(chars))) {
        return string;
      }
      var strSymbols = stringToArray(string),
          chrSymbols = stringToArray(chars),
          start = charsStartIndex(strSymbols, chrSymbols),
          end = charsEndIndex(strSymbols, chrSymbols) + 1;

      return castSlice(strSymbols, start, end).join('');
    }

    /**
     * Removes trailing whitespace or specified characters from `string`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to trim.
     * @param {string} [chars=whitespace] The characters to trim.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {string} Returns the trimmed string.
     * @example
     *
     * _.trimEnd('  abc  ');
     * // => '  abc'
     *
     * _.trimEnd('-_-abc-_-', '_-');
     * // => '-_-abc'
     */
    function trimEnd(string, chars, guard) {
      string = toString(string);
      if (string && (guard || chars === undefined)) {
        return string.replace(reTrimEnd, '');
      }
      if (!string || !(chars = baseToString(chars))) {
        return string;
      }
      var strSymbols = stringToArray(string),
          end = charsEndIndex(strSymbols, stringToArray(chars)) + 1;

      return castSlice(strSymbols, 0, end).join('');
    }

    /**
     * Removes leading whitespace or specified characters from `string`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to trim.
     * @param {string} [chars=whitespace] The characters to trim.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {string} Returns the trimmed string.
     * @example
     *
     * _.trimStart('  abc  ');
     * // => 'abc  '
     *
     * _.trimStart('-_-abc-_-', '_-');
     * // => 'abc-_-'
     */
    function trimStart(string, chars, guard) {
      string = toString(string);
      if (string && (guard || chars === undefined)) {
        return string.replace(reTrimStart, '');
      }
      if (!string || !(chars = baseToString(chars))) {
        return string;
      }
      var strSymbols = stringToArray(string),
          start = charsStartIndex(strSymbols, stringToArray(chars));

      return castSlice(strSymbols, start).join('');
    }

    /**
     * Truncates `string` if it's longer than the given maximum string length.
     * The last characters of the truncated string are replaced with the omission
     * string which defaults to "...".
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to truncate.
     * @param {Object} [options={}] The options object.
     * @param {number} [options.length=30] The maximum string length.
     * @param {string} [options.omission='...'] The string to indicate text is omitted.
     * @param {RegExp|string} [options.separator] The separator pattern to truncate to.
     * @returns {string} Returns the truncated string.
     * @example
     *
     * _.truncate('hi-diddly-ho there, neighborino');
     * // => 'hi-diddly-ho there, neighbo...'
     *
     * _.truncate('hi-diddly-ho there, neighborino', {
     *   'length': 24,
     *   'separator': ' '
     * });
     * // => 'hi-diddly-ho there,...'
     *
     * _.truncate('hi-diddly-ho there, neighborino', {
     *   'length': 24,
     *   'separator': /,? +/
     * });
     * // => 'hi-diddly-ho there...'
     *
     * _.truncate('hi-diddly-ho there, neighborino', {
     *   'omission': ' [...]'
     * });
     * // => 'hi-diddly-ho there, neig [...]'
     */
    function truncate(string, options) {
      var length = DEFAULT_TRUNC_LENGTH,
          omission = DEFAULT_TRUNC_OMISSION;

      if (isObject(options)) {
        var separator = 'separator' in options ? options.separator : separator;
        length = 'length' in options ? toInteger(options.length) : length;
        omission = 'omission' in options ? baseToString(options.omission) : omission;
      }
      string = toString(string);

      var strLength = string.length;
      if (hasUnicode(string)) {
        var strSymbols = stringToArray(string);
        strLength = strSymbols.length;
      }
      if (length >= strLength) {
        return string;
      }
      var end = length - stringSize(omission);
      if (end < 1) {
        return omission;
      }
      var result = strSymbols
        ? castSlice(strSymbols, 0, end).join('')
        : string.slice(0, end);

      if (separator === undefined) {
        return result + omission;
      }
      if (strSymbols) {
        end += (result.length - end);
      }
      if (isRegExp(separator)) {
        if (string.slice(end).search(separator)) {
          var match,
              substring = result;

          if (!separator.global) {
            separator = RegExp(separator.source, toString(reFlags.exec(separator)) + 'g');
          }
          separator.lastIndex = 0;
          while ((match = separator.exec(substring))) {
            var newEnd = match.index;
          }
          result = result.slice(0, newEnd === undefined ? end : newEnd);
        }
      } else if (string.indexOf(baseToString(separator), end) != end) {
        var index = result.lastIndexOf(separator);
        if (index > -1) {
          result = result.slice(0, index);
        }
      }
      return result + omission;
    }

    /**
     * The inverse of `_.escape`; this method converts the HTML entities
     * `&amp;`, `&lt;`, `&gt;`, `&quot;`, and `&#39;` in `string` to
     * their corresponding characters.
     *
     * **Note:** No other HTML entities are unescaped. To unescape additional
     * HTML entities use a third-party library like [_he_](https://mths.be/he).
     *
     * @static
     * @memberOf _
     * @since 0.6.0
     * @category String
     * @param {string} [string=''] The string to unescape.
     * @returns {string} Returns the unescaped string.
     * @example
     *
     * _.unescape('fred, barney, &amp; pebbles');
     * // => 'fred, barney, & pebbles'
     */
    function unescape(string) {
      string = toString(string);
      return (string && reHasEscapedHtml.test(string))
        ? string.replace(reEscapedHtml, unescapeHtmlChar)
        : string;
    }

    /**
     * Converts `string`, as space separated words, to upper case.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the upper cased string.
     * @example
     *
     * _.upperCase('--foo-bar');
     * // => 'FOO BAR'
     *
     * _.upperCase('fooBar');
     * // => 'FOO BAR'
     *
     * _.upperCase('__foo_bar__');
     * // => 'FOO BAR'
     */
    var upperCase = createCompounder(function(result, word, index) {
      return result + (index ? ' ' : '') + word.toUpperCase();
    });

    /**
     * Converts the first character of `string` to upper case.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the converted string.
     * @example
     *
     * _.upperFirst('fred');
     * // => 'Fred'
     *
     * _.upperFirst('FRED');
     * // => 'FRED'
     */
    var upperFirst = createCaseFirst('toUpperCase');

    /**
     * Splits `string` into an array of its words.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to inspect.
     * @param {RegExp|string} [pattern] The pattern to match words.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Array} Returns the words of `string`.
     * @example
     *
     * _.words('fred, barney, & pebbles');
     * // => ['fred', 'barney', 'pebbles']
     *
     * _.words('fred, barney, & pebbles', /[^, ]+/g);
     * // => ['fred', 'barney', '&', 'pebbles']
     */
    function words(string, pattern, guard) {
      string = toString(string);
      pattern = guard ? undefined : pattern;

      if (pattern === undefined) {
        return hasUnicodeWord(string) ? unicodeWords(string) : asciiWords(string);
      }
      return string.match(pattern) || [];
    }

    /*------------------------------------------------------------------------*/

    /**
     * Attempts to invoke `func`, returning either the result or the caught error
     * object. Any additional arguments are provided to `func` when it's invoked.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Util
     * @param {Function} func The function to attempt.
     * @param {...*} [args] The arguments to invoke `func` with.
     * @returns {*} Returns the `func` result or error object.
     * @example
     *
     * // Avoid throwing errors for invalid selectors.
     * var elements = _.attempt(function(selector) {
     *   return document.querySelectorAll(selector);
     * }, '>_>');
     *
     * if (_.isError(elements)) {
     *   elements = [];
     * }
     */
    var attempt = baseRest(function(func, args) {
      try {
        return apply(func, undefined, args);
      } catch (e) {
        return isError(e) ? e : new Error(e);
      }
    });

    /**
     * Binds methods of an object to the object itself, overwriting the existing
     * method.
     *
     * **Note:** This method doesn't set the "length" property of bound functions.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Util
     * @param {Object} object The object to bind and assign the bound methods to.
     * @param {...(string|string[])} methodNames The object method names to bind.
     * @returns {Object} Returns `object`.
     * @example
     *
     * var view = {
     *   'label': 'docs',
     *   'click': function() {
     *     console.log('clicked ' + this.label);
     *   }
     * };
     *
     * _.bindAll(view, ['click']);
     * jQuery(element).on('click', view.click);
     * // => Logs 'clicked docs' when clicked.
     */
    var bindAll = flatRest(function(object, methodNames) {
      arrayEach(methodNames, function(key) {
        key = toKey(key);
        baseAssignValue(object, key, bind(object[key], object));
      });
      return object;
    });

    /**
     * Creates a function that iterates over `pairs` and invokes the corresponding
     * function of the first predicate to return truthy. The predicate-function
     * pairs are invoked with the `this` binding and arguments of the created
     * function.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {Array} pairs The predicate-function pairs.
     * @returns {Function} Returns the new composite function.
     * @example
     *
     * var func = _.cond([
     *   [_.matches({ 'a': 1 }),           _.constant('matches A')],
     *   [_.conforms({ 'b': _.isNumber }), _.constant('matches B')],
     *   [_.stubTrue,                      _.constant('no match')]
     * ]);
     *
     * func({ 'a': 1, 'b': 2 });
     * // => 'matches A'
     *
     * func({ 'a': 0, 'b': 1 });
     * // => 'matches B'
     *
     * func({ 'a': '1', 'b': '2' });
     * // => 'no match'
     */
    function cond(pairs) {
      var length = pairs == null ? 0 : pairs.length,
          toIteratee = getIteratee();

      pairs = !length ? [] : arrayMap(pairs, function(pair) {
        if (typeof pair[1] != 'function') {
          throw new TypeError(FUNC_ERROR_TEXT);
        }
        return [toIteratee(pair[0]), pair[1]];
      });

      return baseRest(function(args) {
        var index = -1;
        while (++index < length) {
          var pair = pairs[index];
          if (apply(pair[0], this, args)) {
            return apply(pair[1], this, args);
          }
        }
      });
    }

    /**
     * Creates a function that invokes the predicate properties of `source` with
     * the corresponding property values of a given object, returning `true` if
     * all predicates return truthy, else `false`.
     *
     * **Note:** The created function is equivalent to `_.conformsTo` with
     * `source` partially applied.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {Object} source The object of property predicates to conform to.
     * @returns {Function} Returns the new spec function.
     * @example
     *
     * var objects = [
     *   { 'a': 2, 'b': 1 },
     *   { 'a': 1, 'b': 2 }
     * ];
     *
     * _.filter(objects, _.conforms({ 'b': function(n) { return n > 1; } }));
     * // => [{ 'a': 1, 'b': 2 }]
     */
    function conforms(source) {
      return baseConforms(baseClone(source, CLONE_DEEP_FLAG));
    }

    /**
     * Creates a function that returns `value`.
     *
     * @static
     * @memberOf _
     * @since 2.4.0
     * @category Util
     * @param {*} value The value to return from the new function.
     * @returns {Function} Returns the new constant function.
     * @example
     *
     * var objects = _.times(2, _.constant({ 'a': 1 }));
     *
     * console.log(objects);
     * // => [{ 'a': 1 }, { 'a': 1 }]
     *
     * console.log(objects[0] === objects[1]);
     * // => true
     */
    function constant(value) {
      return function() {
        return value;
      };
    }

    /**
     * Checks `value` to determine whether a default value should be returned in
     * its place. The `defaultValue` is returned if `value` is `NaN`, `null`,
     * or `undefined`.
     *
     * @static
     * @memberOf _
     * @since 4.14.0
     * @category Util
     * @param {*} value The value to check.
     * @param {*} defaultValue The default value.
     * @returns {*} Returns the resolved value.
     * @example
     *
     * _.defaultTo(1, 10);
     * // => 1
     *
     * _.defaultTo(undefined, 10);
     * // => 10
     */
    function defaultTo(value, defaultValue) {
      return (value == null || value !== value) ? defaultValue : value;
    }

    /**
     * Creates a function that returns the result of invoking the given functions
     * with the `this` binding of the created function, where each successive
     * invocation is supplied the return value of the previous.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Util
     * @param {...(Function|Function[])} [funcs] The functions to invoke.
     * @returns {Function} Returns the new composite function.
     * @see _.flowRight
     * @example
     *
     * function square(n) {
     *   return n * n;
     * }
     *
     * var addSquare = _.flow([_.add, square]);
     * addSquare(1, 2);
     * // => 9
     */
    var flow = createFlow();

    /**
     * This method is like `_.flow` except that it creates a function that
     * invokes the given functions from right to left.
     *
     * @static
     * @since 3.0.0
     * @memberOf _
     * @category Util
     * @param {...(Function|Function[])} [funcs] The functions to invoke.
     * @returns {Function} Returns the new composite function.
     * @see _.flow
     * @example
     *
     * function square(n) {
     *   return n * n;
     * }
     *
     * var addSquare = _.flowRight([square, _.add]);
     * addSquare(1, 2);
     * // => 9
     */
    var flowRight = createFlow(true);

    /**
     * This method returns the first argument it receives.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Util
     * @param {*} value Any value.
     * @returns {*} Returns `value`.
     * @example
     *
     * var object = { 'a': 1 };
     *
     * console.log(_.identity(object) === object);
     * // => true
     */
    function identity(value) {
      return value;
    }

    /**
     * Creates a function that invokes `func` with the arguments of the created
     * function. If `func` is a property name, the created function returns the
     * property value for a given element. If `func` is an array or object, the
     * created function returns `true` for elements that contain the equivalent
     * source properties, otherwise it returns `false`.
     *
     * @static
     * @since 4.0.0
     * @memberOf _
     * @category Util
     * @param {*} [func=_.identity] The value to convert to a callback.
     * @returns {Function} Returns the callback.
     * @example
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36, 'active': true },
     *   { 'user': 'fred',   'age': 40, 'active': false }
     * ];
     *
     * // The `_.matches` iteratee shorthand.
     * _.filter(users, _.iteratee({ 'user': 'barney', 'active': true }));
     * // => [{ 'user': 'barney', 'age': 36, 'active': true }]
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.filter(users, _.iteratee(['user', 'fred']));
     * // => [{ 'user': 'fred', 'age': 40 }]
     *
     * // The `_.property` iteratee shorthand.
     * _.map(users, _.iteratee('user'));
     * // => ['barney', 'fred']
     *
     * // Create custom iteratee shorthands.
     * _.iteratee = _.wrap(_.iteratee, function(iteratee, func) {
     *   return !_.isRegExp(func) ? iteratee(func) : function(string) {
     *     return func.test(string);
     *   };
     * });
     *
     * _.filter(['abc', 'def'], /ef/);
     * // => ['def']
     */
    function iteratee(func) {
      return baseIteratee(typeof func == 'function' ? func : baseClone(func, CLONE_DEEP_FLAG));
    }

    /**
     * Creates a function that performs a partial deep comparison between a given
     * object and `source`, returning `true` if the given object has equivalent
     * property values, else `false`.
     *
     * **Note:** The created function is equivalent to `_.isMatch` with `source`
     * partially applied.
     *
     * Partial comparisons will match empty array and empty object `source`
     * values against any array or object value, respectively. See `_.isEqual`
     * for a list of supported value comparisons.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Util
     * @param {Object} source The object of property values to match.
     * @returns {Function} Returns the new spec function.
     * @example
     *
     * var objects = [
     *   { 'a': 1, 'b': 2, 'c': 3 },
     *   { 'a': 4, 'b': 5, 'c': 6 }
     * ];
     *
     * _.filter(objects, _.matches({ 'a': 4, 'c': 6 }));
     * // => [{ 'a': 4, 'b': 5, 'c': 6 }]
     */
    function matches(source) {
      return baseMatches(baseClone(source, CLONE_DEEP_FLAG));
    }

    /**
     * Creates a function that performs a partial deep comparison between the
     * value at `path` of a given object to `srcValue`, returning `true` if the
     * object value is equivalent, else `false`.
     *
     * **Note:** Partial comparisons will match empty array and empty object
     * `srcValue` values against any array or object value, respectively. See
     * `_.isEqual` for a list of supported value comparisons.
     *
     * @static
     * @memberOf _
     * @since 3.2.0
     * @category Util
     * @param {Array|string} path The path of the property to get.
     * @param {*} srcValue The value to match.
     * @returns {Function} Returns the new spec function.
     * @example
     *
     * var objects = [
     *   { 'a': 1, 'b': 2, 'c': 3 },
     *   { 'a': 4, 'b': 5, 'c': 6 }
     * ];
     *
     * _.find(objects, _.matchesProperty('a', 4));
     * // => { 'a': 4, 'b': 5, 'c': 6 }
     */
    function matchesProperty(path, srcValue) {
      return baseMatchesProperty(path, baseClone(srcValue, CLONE_DEEP_FLAG));
    }

    /**
     * Creates a function that invokes the method at `path` of a given object.
     * Any additional arguments are provided to the invoked method.
     *
     * @static
     * @memberOf _
     * @since 3.7.0
     * @category Util
     * @param {Array|string} path The path of the method to invoke.
     * @param {...*} [args] The arguments to invoke the method with.
     * @returns {Function} Returns the new invoker function.
     * @example
     *
     * var objects = [
     *   { 'a': { 'b': _.constant(2) } },
     *   { 'a': { 'b': _.constant(1) } }
     * ];
     *
     * _.map(objects, _.method('a.b'));
     * // => [2, 1]
     *
     * _.map(objects, _.method(['a', 'b']));
     * // => [2, 1]
     */
    var method = baseRest(function(path, args) {
      return function(object) {
        return baseInvoke(object, path, args);
      };
    });

    /**
     * The opposite of `_.method`; this method creates a function that invokes
     * the method at a given path of `object`. Any additional arguments are
     * provided to the invoked method.
     *
     * @static
     * @memberOf _
     * @since 3.7.0
     * @category Util
     * @param {Object} object The object to query.
     * @param {...*} [args] The arguments to invoke the method with.
     * @returns {Function} Returns the new invoker function.
     * @example
     *
     * var array = _.times(3, _.constant),
     *     object = { 'a': array, 'b': array, 'c': array };
     *
     * _.map(['a[2]', 'c[0]'], _.methodOf(object));
     * // => [2, 0]
     *
     * _.map([['a', '2'], ['c', '0']], _.methodOf(object));
     * // => [2, 0]
     */
    var methodOf = baseRest(function(object, args) {
      return function(path) {
        return baseInvoke(object, path, args);
      };
    });

    /**
     * Adds all own enumerable string keyed function properties of a source
     * object to the destination object. If `object` is a function, then methods
     * are added to its prototype as well.
     *
     * **Note:** Use `_.runInContext` to create a pristine `lodash` function to
     * avoid conflicts caused by modifying the original.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Util
     * @param {Function|Object} [object=lodash] The destination object.
     * @param {Object} source The object of functions to add.
     * @param {Object} [options={}] The options object.
     * @param {boolean} [options.chain=true] Specify whether mixins are chainable.
     * @returns {Function|Object} Returns `object`.
     * @example
     *
     * function vowels(string) {
     *   return _.filter(string, function(v) {
     *     return /[aeiou]/i.test(v);
     *   });
     * }
     *
     * _.mixin({ 'vowels': vowels });
     * _.vowels('fred');
     * // => ['e']
     *
     * _('fred').vowels().value();
     * // => ['e']
     *
     * _.mixin({ 'vowels': vowels }, { 'chain': false });
     * _('fred').vowels();
     * // => ['e']
     */
    function mixin(object, source, options) {
      var props = keys(source),
          methodNames = baseFunctions(source, props);

      if (options == null &&
          !(isObject(source) && (methodNames.length || !props.length))) {
        options = source;
        source = object;
        object = this;
        methodNames = baseFunctions(source, keys(source));
      }
      var chain = !(isObject(options) && 'chain' in options) || !!options.chain,
          isFunc = isFunction(object);

      arrayEach(methodNames, function(methodName) {
        var func = source[methodName];
        object[methodName] = func;
        if (isFunc) {
          object.prototype[methodName] = function() {
            var chainAll = this.__chain__;
            if (chain || chainAll) {
              var result = object(this.__wrapped__),
                  actions = result.__actions__ = copyArray(this.__actions__);

              actions.push({ 'func': func, 'args': arguments, 'thisArg': object });
              result.__chain__ = chainAll;
              return result;
            }
            return func.apply(object, arrayPush([this.value()], arguments));
          };
        }
      });

      return object;
    }

    /**
     * Reverts the `_` variable to its previous value and returns a reference to
     * the `lodash` function.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Util
     * @returns {Function} Returns the `lodash` function.
     * @example
     *
     * var lodash = _.noConflict();
     */
    function noConflict() {
      if (root._ === this) {
        root._ = oldDash;
      }
      return this;
    }

    /**
     * This method returns `undefined`.
     *
     * @static
     * @memberOf _
     * @since 2.3.0
     * @category Util
     * @example
     *
     * _.times(2, _.noop);
     * // => [undefined, undefined]
     */
    function noop() {
      // No operation performed.
    }

    /**
     * Creates a function that gets the argument at index `n`. If `n` is negative,
     * the nth argument from the end is returned.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {number} [n=0] The index of the argument to return.
     * @returns {Function} Returns the new pass-thru function.
     * @example
     *
     * var func = _.nthArg(1);
     * func('a', 'b', 'c', 'd');
     * // => 'b'
     *
     * var func = _.nthArg(-2);
     * func('a', 'b', 'c', 'd');
     * // => 'c'
     */
    function nthArg(n) {
      n = toInteger(n);
      return baseRest(function(args) {
        return baseNth(args, n);
      });
    }

    /**
     * Creates a function that invokes `iteratees` with the arguments it receives
     * and returns their results.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {...(Function|Function[])} [iteratees=[_.identity]]
     *  The iteratees to invoke.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var func = _.over([Math.max, Math.min]);
     *
     * func(1, 2, 3, 4);
     * // => [4, 1]
     */
    var over = createOver(arrayMap);

    /**
     * Creates a function that checks if **all** of the `predicates` return
     * truthy when invoked with the arguments it receives.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {...(Function|Function[])} [predicates=[_.identity]]
     *  The predicates to check.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var func = _.overEvery([Boolean, isFinite]);
     *
     * func('1');
     * // => true
     *
     * func(null);
     * // => false
     *
     * func(NaN);
     * // => false
     */
    var overEvery = createOver(arrayEvery);

    /**
     * Creates a function that checks if **any** of the `predicates` return
     * truthy when invoked with the arguments it receives.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {...(Function|Function[])} [predicates=[_.identity]]
     *  The predicates to check.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var func = _.overSome([Boolean, isFinite]);
     *
     * func('1');
     * // => true
     *
     * func(null);
     * // => true
     *
     * func(NaN);
     * // => false
     */
    var overSome = createOver(arraySome);

    /**
     * Creates a function that returns the value at `path` of a given object.
     *
     * @static
     * @memberOf _
     * @since 2.4.0
     * @category Util
     * @param {Array|string} path The path of the property to get.
     * @returns {Function} Returns the new accessor function.
     * @example
     *
     * var objects = [
     *   { 'a': { 'b': 2 } },
     *   { 'a': { 'b': 1 } }
     * ];
     *
     * _.map(objects, _.property('a.b'));
     * // => [2, 1]
     *
     * _.map(_.sortBy(objects, _.property(['a', 'b'])), 'a.b');
     * // => [1, 2]
     */
    function property(path) {
      return isKey(path) ? baseProperty(toKey(path)) : basePropertyDeep(path);
    }

    /**
     * The opposite of `_.property`; this method creates a function that returns
     * the value at a given path of `object`.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Util
     * @param {Object} object The object to query.
     * @returns {Function} Returns the new accessor function.
     * @example
     *
     * var array = [0, 1, 2],
     *     object = { 'a': array, 'b': array, 'c': array };
     *
     * _.map(['a[2]', 'c[0]'], _.propertyOf(object));
     * // => [2, 0]
     *
     * _.map([['a', '2'], ['c', '0']], _.propertyOf(object));
     * // => [2, 0]
     */
    function propertyOf(object) {
      return function(path) {
        return object == null ? undefined : baseGet(object, path);
      };
    }

    /**
     * Creates an array of numbers (positive and/or negative) progressing from
     * `start` up to, but not including, `end`. A step of `-1` is used if a negative
     * `start` is specified without an `end` or `step`. If `end` is not specified,
     * it's set to `start` with `start` then set to `0`.
     *
     * **Note:** JavaScript follows the IEEE-754 standard for resolving
     * floating-point values which can produce unexpected results.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Util
     * @param {number} [start=0] The start of the range.
     * @param {number} end The end of the range.
     * @param {number} [step=1] The value to increment or decrement by.
     * @returns {Array} Returns the range of numbers.
     * @see _.inRange, _.rangeRight
     * @example
     *
     * _.range(4);
     * // => [0, 1, 2, 3]
     *
     * _.range(-4);
     * // => [0, -1, -2, -3]
     *
     * _.range(1, 5);
     * // => [1, 2, 3, 4]
     *
     * _.range(0, 20, 5);
     * // => [0, 5, 10, 15]
     *
     * _.range(0, -4, -1);
     * // => [0, -1, -2, -3]
     *
     * _.range(1, 4, 0);
     * // => [1, 1, 1]
     *
     * _.range(0);
     * // => []
     */
    var range = createRange();

    /**
     * This method is like `_.range` except that it populates values in
     * descending order.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {number} [start=0] The start of the range.
     * @param {number} end The end of the range.
     * @param {number} [step=1] The value to increment or decrement by.
     * @returns {Array} Returns the range of numbers.
     * @see _.inRange, _.range
     * @example
     *
     * _.rangeRight(4);
     * // => [3, 2, 1, 0]
     *
     * _.rangeRight(-4);
     * // => [-3, -2, -1, 0]
     *
     * _.rangeRight(1, 5);
     * // => [4, 3, 2, 1]
     *
     * _.rangeRight(0, 20, 5);
     * // => [15, 10, 5, 0]
     *
     * _.rangeRight(0, -4, -1);
     * // => [-3, -2, -1, 0]
     *
     * _.rangeRight(1, 4, 0);
     * // => [1, 1, 1]
     *
     * _.rangeRight(0);
     * // => []
     */
    var rangeRight = createRange(true);

    /**
     * This method returns a new empty array.
     *
     * @static
     * @memberOf _
     * @since 4.13.0
     * @category Util
     * @returns {Array} Returns the new empty array.
     * @example
     *
     * var arrays = _.times(2, _.stubArray);
     *
     * console.log(arrays);
     * // => [[], []]
     *
     * console.log(arrays[0] === arrays[1]);
     * // => false
     */
    function stubArray() {
      return [];
    }

    /**
     * This method returns `false`.
     *
     * @static
     * @memberOf _
     * @since 4.13.0
     * @category Util
     * @returns {boolean} Returns `false`.
     * @example
     *
     * _.times(2, _.stubFalse);
     * // => [false, false]
     */
    function stubFalse() {
      return false;
    }

    /**
     * This method returns a new empty object.
     *
     * @static
     * @memberOf _
     * @since 4.13.0
     * @category Util
     * @returns {Object} Returns the new empty object.
     * @example
     *
     * var objects = _.times(2, _.stubObject);
     *
     * console.log(objects);
     * // => [{}, {}]
     *
     * console.log(objects[0] === objects[1]);
     * // => false
     */
    function stubObject() {
      return {};
    }

    /**
     * This method returns an empty string.
     *
     * @static
     * @memberOf _
     * @since 4.13.0
     * @category Util
     * @returns {string} Returns the empty string.
     * @example
     *
     * _.times(2, _.stubString);
     * // => ['', '']
     */
    function stubString() {
      return '';
    }

    /**
     * This method returns `true`.
     *
     * @static
     * @memberOf _
     * @since 4.13.0
     * @category Util
     * @returns {boolean} Returns `true`.
     * @example
     *
     * _.times(2, _.stubTrue);
     * // => [true, true]
     */
    function stubTrue() {
      return true;
    }

    /**
     * Invokes the iteratee `n` times, returning an array of the results of
     * each invocation. The iteratee is invoked with one argument; (index).
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Util
     * @param {number} n The number of times to invoke `iteratee`.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the array of results.
     * @example
     *
     * _.times(3, String);
     * // => ['0', '1', '2']
     *
     *  _.times(4, _.constant(0));
     * // => [0, 0, 0, 0]
     */
    function times(n, iteratee) {
      n = toInteger(n);
      if (n < 1 || n > MAX_SAFE_INTEGER) {
        return [];
      }
      var index = MAX_ARRAY_LENGTH,
          length = nativeMin(n, MAX_ARRAY_LENGTH);

      iteratee = getIteratee(iteratee);
      n -= MAX_ARRAY_LENGTH;

      var result = baseTimes(length, iteratee);
      while (++index < n) {
        iteratee(index);
      }
      return result;
    }

    /**
     * Converts `value` to a property path array.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {*} value The value to convert.
     * @returns {Array} Returns the new property path array.
     * @example
     *
     * _.toPath('a.b.c');
     * // => ['a', 'b', 'c']
     *
     * _.toPath('a[0].b.c');
     * // => ['a', '0', 'b', 'c']
     */
    function toPath(value) {
      if (isArray(value)) {
        return arrayMap(value, toKey);
      }
      return isSymbol(value) ? [value] : copyArray(stringToPath(toString(value)));
    }

    /**
     * Generates a unique ID. If `prefix` is given, the ID is appended to it.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Util
     * @param {string} [prefix=''] The value to prefix the ID with.
     * @returns {string} Returns the unique ID.
     * @example
     *
     * _.uniqueId('contact_');
     * // => 'contact_104'
     *
     * _.uniqueId();
     * // => '105'
     */
    function uniqueId(prefix) {
      var id = ++idCounter;
      return toString(prefix) + id;
    }

    /*------------------------------------------------------------------------*/

    /**
     * Adds two numbers.
     *
     * @static
     * @memberOf _
     * @since 3.4.0
     * @category Math
     * @param {number} augend The first number in an addition.
     * @param {number} addend The second number in an addition.
     * @returns {number} Returns the total.
     * @example
     *
     * _.add(6, 4);
     * // => 10
     */
    var add = createMathOperation(function(augend, addend) {
      return augend + addend;
    }, 0);

    /**
     * Computes `number` rounded up to `precision`.
     *
     * @static
     * @memberOf _
     * @since 3.10.0
     * @category Math
     * @param {number} number The number to round up.
     * @param {number} [precision=0] The precision to round up to.
     * @returns {number} Returns the rounded up number.
     * @example
     *
     * _.ceil(4.006);
     * // => 5
     *
     * _.ceil(6.004, 2);
     * // => 6.01
     *
     * _.ceil(6040, -2);
     * // => 6100
     */
    var ceil = createRound('ceil');

    /**
     * Divide two numbers.
     *
     * @static
     * @memberOf _
     * @since 4.7.0
     * @category Math
     * @param {number} dividend The first number in a division.
     * @param {number} divisor The second number in a division.
     * @returns {number} Returns the quotient.
     * @example
     *
     * _.divide(6, 4);
     * // => 1.5
     */
    var divide = createMathOperation(function(dividend, divisor) {
      return dividend / divisor;
    }, 1);

    /**
     * Computes `number` rounded down to `precision`.
     *
     * @static
     * @memberOf _
     * @since 3.10.0
     * @category Math
     * @param {number} number The number to round down.
     * @param {number} [precision=0] The precision to round down to.
     * @returns {number} Returns the rounded down number.
     * @example
     *
     * _.floor(4.006);
     * // => 4
     *
     * _.floor(0.046, 2);
     * // => 0.04
     *
     * _.floor(4060, -2);
     * // => 4000
     */
    var floor = createRound('floor');

    /**
     * Computes the maximum value of `array`. If `array` is empty or falsey,
     * `undefined` is returned.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Math
     * @param {Array} array The array to iterate over.
     * @returns {*} Returns the maximum value.
     * @example
     *
     * _.max([4, 2, 8, 6]);
     * // => 8
     *
     * _.max([]);
     * // => undefined
     */
    function max(array) {
      return (array && array.length)
        ? baseExtremum(array, identity, baseGt)
        : undefined;
    }

    /**
     * This method is like `_.max` except that it accepts `iteratee` which is
     * invoked for each element in `array` to generate the criterion by which
     * the value is ranked. The iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Math
     * @param {Array} array The array to iterate over.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {*} Returns the maximum value.
     * @example
     *
     * var objects = [{ 'n': 1 }, { 'n': 2 }];
     *
     * _.maxBy(objects, function(o) { return o.n; });
     * // => { 'n': 2 }
     *
     * // The `_.property` iteratee shorthand.
     * _.maxBy(objects, 'n');
     * // => { 'n': 2 }
     */
    function maxBy(array, iteratee) {
      return (array && array.length)
        ? baseExtremum(array, getIteratee(iteratee, 2), baseGt)
        : undefined;
    }

    /**
     * Computes the mean of the values in `array`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Math
     * @param {Array} array The array to iterate over.
     * @returns {number} Returns the mean.
     * @example
     *
     * _.mean([4, 2, 8, 6]);
     * // => 5
     */
    function mean(array) {
      return baseMean(array, identity);
    }

    /**
     * This method is like `_.mean` except that it accepts `iteratee` which is
     * invoked for each element in `array` to generate the value to be averaged.
     * The iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.7.0
     * @category Math
     * @param {Array} array The array to iterate over.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {number} Returns the mean.
     * @example
     *
     * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];
     *
     * _.meanBy(objects, function(o) { return o.n; });
     * // => 5
     *
     * // The `_.property` iteratee shorthand.
     * _.meanBy(objects, 'n');
     * // => 5
     */
    function meanBy(array, iteratee) {
      return baseMean(array, getIteratee(iteratee, 2));
    }

    /**
     * Computes the minimum value of `array`. If `array` is empty or falsey,
     * `undefined` is returned.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Math
     * @param {Array} array The array to iterate over.
     * @returns {*} Returns the minimum value.
     * @example
     *
     * _.min([4, 2, 8, 6]);
     * // => 2
     *
     * _.min([]);
     * // => undefined
     */
    function min(array) {
      return (array && array.length)
        ? baseExtremum(array, identity, baseLt)
        : undefined;
    }

    /**
     * This method is like `_.min` except that it accepts `iteratee` which is
     * invoked for each element in `array` to generate the criterion by which
     * the value is ranked. The iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Math
     * @param {Array} array The array to iterate over.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {*} Returns the minimum value.
     * @example
     *
     * var objects = [{ 'n': 1 }, { 'n': 2 }];
     *
     * _.minBy(objects, function(o) { return o.n; });
     * // => { 'n': 1 }
     *
     * // The `_.property` iteratee shorthand.
     * _.minBy(objects, 'n');
     * // => { 'n': 1 }
     */
    function minBy(array, iteratee) {
      return (array && array.length)
        ? baseExtremum(array, getIteratee(iteratee, 2), baseLt)
        : undefined;
    }

    /**
     * Multiply two numbers.
     *
     * @static
     * @memberOf _
     * @since 4.7.0
     * @category Math
     * @param {number} multiplier The first number in a multiplication.
     * @param {number} multiplicand The second number in a multiplication.
     * @returns {number} Returns the product.
     * @example
     *
     * _.multiply(6, 4);
     * // => 24
     */
    var multiply = createMathOperation(function(multiplier, multiplicand) {
      return multiplier * multiplicand;
    }, 1);

    /**
     * Computes `number` rounded to `precision`.
     *
     * @static
     * @memberOf _
     * @since 3.10.0
     * @category Math
     * @param {number} number The number to round.
     * @param {number} [precision=0] The precision to round to.
     * @returns {number} Returns the rounded number.
     * @example
     *
     * _.round(4.006);
     * // => 4
     *
     * _.round(4.006, 2);
     * // => 4.01
     *
     * _.round(4060, -2);
     * // => 4100
     */
    var round = createRound('round');

    /**
     * Subtract two numbers.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Math
     * @param {number} minuend The first number in a subtraction.
     * @param {number} subtrahend The second number in a subtraction.
     * @returns {number} Returns the difference.
     * @example
     *
     * _.subtract(6, 4);
     * // => 2
     */
    var subtract = createMathOperation(function(minuend, subtrahend) {
      return minuend - subtrahend;
    }, 0);

    /**
     * Computes the sum of the values in `array`.
     *
     * @static
     * @memberOf _
     * @since 3.4.0
     * @category Math
     * @param {Array} array The array to iterate over.
     * @returns {number} Returns the sum.
     * @example
     *
     * _.sum([4, 2, 8, 6]);
     * // => 20
     */
    function sum(array) {
      return (array && array.length)
        ? baseSum(array, identity)
        : 0;
    }

    /**
     * This method is like `_.sum` except that it accepts `iteratee` which is
     * invoked for each element in `array` to generate the value to be summed.
     * The iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Math
     * @param {Array} array The array to iterate over.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {number} Returns the sum.
     * @example
     *
     * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];
     *
     * _.sumBy(objects, function(o) { return o.n; });
     * // => 20
     *
     * // The `_.property` iteratee shorthand.
     * _.sumBy(objects, 'n');
     * // => 20
     */
    function sumBy(array, iteratee) {
      return (array && array.length)
        ? baseSum(array, getIteratee(iteratee, 2))
        : 0;
    }

    /*------------------------------------------------------------------------*/

    // Add methods that return wrapped values in chain sequences.
    lodash.after = after;
    lodash.ary = ary;
    lodash.assign = assign;
    lodash.assignIn = assignIn;
    lodash.assignInWith = assignInWith;
    lodash.assignWith = assignWith;
    lodash.at = at;
    lodash.before = before;
    lodash.bind = bind;
    lodash.bindAll = bindAll;
    lodash.bindKey = bindKey;
    lodash.castArray = castArray;
    lodash.chain = chain;
    lodash.chunk = chunk;
    lodash.compact = compact;
    lodash.concat = concat;
    lodash.cond = cond;
    lodash.conforms = conforms;
    lodash.constant = constant;
    lodash.countBy = countBy;
    lodash.create = create;
    lodash.curry = curry;
    lodash.curryRight = curryRight;
    lodash.debounce = debounce;
    lodash.defaults = defaults;
    lodash.defaultsDeep = defaultsDeep;
    lodash.defer = defer;
    lodash.delay = delay;
    lodash.difference = difference;
    lodash.differenceBy = differenceBy;
    lodash.differenceWith = differenceWith;
    lodash.drop = drop;
    lodash.dropRight = dropRight;
    lodash.dropRightWhile = dropRightWhile;
    lodash.dropWhile = dropWhile;
    lodash.fill = fill;
    lodash.filter = filter;
    lodash.flatMap = flatMap;
    lodash.flatMapDeep = flatMapDeep;
    lodash.flatMapDepth = flatMapDepth;
    lodash.flatten = flatten;
    lodash.flattenDeep = flattenDeep;
    lodash.flattenDepth = flattenDepth;
    lodash.flip = flip;
    lodash.flow = flow;
    lodash.flowRight = flowRight;
    lodash.fromPairs = fromPairs;
    lodash.functions = functions;
    lodash.functionsIn = functionsIn;
    lodash.groupBy = groupBy;
    lodash.initial = initial;
    lodash.intersection = intersection;
    lodash.intersectionBy = intersectionBy;
    lodash.intersectionWith = intersectionWith;
    lodash.invert = invert;
    lodash.invertBy = invertBy;
    lodash.invokeMap = invokeMap;
    lodash.iteratee = iteratee;
    lodash.keyBy = keyBy;
    lodash.keys = keys;
    lodash.keysIn = keysIn;
    lodash.map = map;
    lodash.mapKeys = mapKeys;
    lodash.mapValues = mapValues;
    lodash.matches = matches;
    lodash.matchesProperty = matchesProperty;
    lodash.memoize = memoize;
    lodash.merge = merge;
    lodash.mergeWith = mergeWith;
    lodash.method = method;
    lodash.methodOf = methodOf;
    lodash.mixin = mixin;
    lodash.negate = negate;
    lodash.nthArg = nthArg;
    lodash.omit = omit;
    lodash.omitBy = omitBy;
    lodash.once = once;
    lodash.orderBy = orderBy;
    lodash.over = over;
    lodash.overArgs = overArgs;
    lodash.overEvery = overEvery;
    lodash.overSome = overSome;
    lodash.partial = partial;
    lodash.partialRight = partialRight;
    lodash.partition = partition;
    lodash.pick = pick;
    lodash.pickBy = pickBy;
    lodash.property = property;
    lodash.propertyOf = propertyOf;
    lodash.pull = pull;
    lodash.pullAll = pullAll;
    lodash.pullAllBy = pullAllBy;
    lodash.pullAllWith = pullAllWith;
    lodash.pullAt = pullAt;
    lodash.range = range;
    lodash.rangeRight = rangeRight;
    lodash.rearg = rearg;
    lodash.reject = reject;
    lodash.remove = remove;
    lodash.rest = rest;
    lodash.reverse = reverse;
    lodash.sampleSize = sampleSize;
    lodash.set = set;
    lodash.setWith = setWith;
    lodash.shuffle = shuffle;
    lodash.slice = slice;
    lodash.sortBy = sortBy;
    lodash.sortedUniq = sortedUniq;
    lodash.sortedUniqBy = sortedUniqBy;
    lodash.split = split;
    lodash.spread = spread;
    lodash.tail = tail;
    lodash.take = take;
    lodash.takeRight = takeRight;
    lodash.takeRightWhile = takeRightWhile;
    lodash.takeWhile = takeWhile;
    lodash.tap = tap;
    lodash.throttle = throttle;
    lodash.thru = thru;
    lodash.toArray = toArray;
    lodash.toPairs = toPairs;
    lodash.toPairsIn = toPairsIn;
    lodash.toPath = toPath;
    lodash.toPlainObject = toPlainObject;
    lodash.transform = transform;
    lodash.unary = unary;
    lodash.union = union;
    lodash.unionBy = unionBy;
    lodash.unionWith = unionWith;
    lodash.uniq = uniq;
    lodash.uniqBy = uniqBy;
    lodash.uniqWith = uniqWith;
    lodash.unset = unset;
    lodash.unzip = unzip;
    lodash.unzipWith = unzipWith;
    lodash.update = update;
    lodash.updateWith = updateWith;
    lodash.values = values;
    lodash.valuesIn = valuesIn;
    lodash.without = without;
    lodash.words = words;
    lodash.wrap = wrap;
    lodash.xor = xor;
    lodash.xorBy = xorBy;
    lodash.xorWith = xorWith;
    lodash.zip = zip;
    lodash.zipObject = zipObject;
    lodash.zipObjectDeep = zipObjectDeep;
    lodash.zipWith = zipWith;

    // Add aliases.
    lodash.entries = toPairs;
    lodash.entriesIn = toPairsIn;
    lodash.extend = assignIn;
    lodash.extendWith = assignInWith;

    // Add methods to `lodash.prototype`.
    mixin(lodash, lodash);

    /*------------------------------------------------------------------------*/

    // Add methods that return unwrapped values in chain sequences.
    lodash.add = add;
    lodash.attempt = attempt;
    lodash.camelCase = camelCase;
    lodash.capitalize = capitalize;
    lodash.ceil = ceil;
    lodash.clamp = clamp;
    lodash.clone = clone;
    lodash.cloneDeep = cloneDeep;
    lodash.cloneDeepWith = cloneDeepWith;
    lodash.cloneWith = cloneWith;
    lodash.conformsTo = conformsTo;
    lodash.deburr = deburr;
    lodash.defaultTo = defaultTo;
    lodash.divide = divide;
    lodash.endsWith = endsWith;
    lodash.eq = eq;
    lodash.escape = escape;
    lodash.escapeRegExp = escapeRegExp;
    lodash.every = every;
    lodash.find = find;
    lodash.findIndex = findIndex;
    lodash.findKey = findKey;
    lodash.findLast = findLast;
    lodash.findLastIndex = findLastIndex;
    lodash.findLastKey = findLastKey;
    lodash.floor = floor;
    lodash.forEach = forEach;
    lodash.forEachRight = forEachRight;
    lodash.forIn = forIn;
    lodash.forInRight = forInRight;
    lodash.forOwn = forOwn;
    lodash.forOwnRight = forOwnRight;
    lodash.get = get;
    lodash.gt = gt;
    lodash.gte = gte;
    lodash.has = has;
    lodash.hasIn = hasIn;
    lodash.head = head;
    lodash.identity = identity;
    lodash.includes = includes;
    lodash.indexOf = indexOf;
    lodash.inRange = inRange;
    lodash.invoke = invoke;
    lodash.isArguments = isArguments;
    lodash.isArray = isArray;
    lodash.isArrayBuffer = isArrayBuffer;
    lodash.isArrayLike = isArrayLike;
    lodash.isArrayLikeObject = isArrayLikeObject;
    lodash.isBoolean = isBoolean;
    lodash.isBuffer = isBuffer;
    lodash.isDate = isDate;
    lodash.isElement = isElement;
    lodash.isEmpty = isEmpty;
    lodash.isEqual = isEqual;
    lodash.isEqualWith = isEqualWith;
    lodash.isError = isError;
    lodash.isFinite = isFinite;
    lodash.isFunction = isFunction;
    lodash.isInteger = isInteger;
    lodash.isLength = isLength;
    lodash.isMap = isMap;
    lodash.isMatch = isMatch;
    lodash.isMatchWith = isMatchWith;
    lodash.isNaN = isNaN;
    lodash.isNative = isNative;
    lodash.isNil = isNil;
    lodash.isNull = isNull;
    lodash.isNumber = isNumber;
    lodash.isObject = isObject;
    lodash.isObjectLike = isObjectLike;
    lodash.isPlainObject = isPlainObject;
    lodash.isRegExp = isRegExp;
    lodash.isSafeInteger = isSafeInteger;
    lodash.isSet = isSet;
    lodash.isString = isString;
    lodash.isSymbol = isSymbol;
    lodash.isTypedArray = isTypedArray;
    lodash.isUndefined = isUndefined;
    lodash.isWeakMap = isWeakMap;
    lodash.isWeakSet = isWeakSet;
    lodash.join = join;
    lodash.kebabCase = kebabCase;
    lodash.last = last;
    lodash.lastIndexOf = lastIndexOf;
    lodash.lowerCase = lowerCase;
    lodash.lowerFirst = lowerFirst;
    lodash.lt = lt;
    lodash.lte = lte;
    lodash.max = max;
    lodash.maxBy = maxBy;
    lodash.mean = mean;
    lodash.meanBy = meanBy;
    lodash.min = min;
    lodash.minBy = minBy;
    lodash.stubArray = stubArray;
    lodash.stubFalse = stubFalse;
    lodash.stubObject = stubObject;
    lodash.stubString = stubString;
    lodash.stubTrue = stubTrue;
    lodash.multiply = multiply;
    lodash.nth = nth;
    lodash.noConflict = noConflict;
    lodash.noop = noop;
    lodash.now = now;
    lodash.pad = pad;
    lodash.padEnd = padEnd;
    lodash.padStart = padStart;
    lodash.parseInt = parseInt;
    lodash.random = random;
    lodash.reduce = reduce;
    lodash.reduceRight = reduceRight;
    lodash.repeat = repeat;
    lodash.replace = replace;
    lodash.result = result;
    lodash.round = round;
    lodash.runInContext = runInContext;
    lodash.sample = sample;
    lodash.size = size;
    lodash.snakeCase = snakeCase;
    lodash.some = some;
    lodash.sortedIndex = sortedIndex;
    lodash.sortedIndexBy = sortedIndexBy;
    lodash.sortedIndexOf = sortedIndexOf;
    lodash.sortedLastIndex = sortedLastIndex;
    lodash.sortedLastIndexBy = sortedLastIndexBy;
    lodash.sortedLastIndexOf = sortedLastIndexOf;
    lodash.startCase = startCase;
    lodash.startsWith = startsWith;
    lodash.subtract = subtract;
    lodash.sum = sum;
    lodash.sumBy = sumBy;
    lodash.template = template;
    lodash.times = times;
    lodash.toFinite = toFinite;
    lodash.toInteger = toInteger;
    lodash.toLength = toLength;
    lodash.toLower = toLower;
    lodash.toNumber = toNumber;
    lodash.toSafeInteger = toSafeInteger;
    lodash.toString = toString;
    lodash.toUpper = toUpper;
    lodash.trim = trim;
    lodash.trimEnd = trimEnd;
    lodash.trimStart = trimStart;
    lodash.truncate = truncate;
    lodash.unescape = unescape;
    lodash.uniqueId = uniqueId;
    lodash.upperCase = upperCase;
    lodash.upperFirst = upperFirst;

    // Add aliases.
    lodash.each = forEach;
    lodash.eachRight = forEachRight;
    lodash.first = head;

    mixin(lodash, (function() {
      var source = {};
      baseForOwn(lodash, function(func, methodName) {
        if (!hasOwnProperty.call(lodash.prototype, methodName)) {
          source[methodName] = func;
        }
      });
      return source;
    }()), { 'chain': false });

    /*------------------------------------------------------------------------*/

    /**
     * The semantic version number.
     *
     * @static
     * @memberOf _
     * @type {string}
     */
    lodash.VERSION = VERSION;

    // Assign default placeholders.
    arrayEach(['bind', 'bindKey', 'curry', 'curryRight', 'partial', 'partialRight'], function(methodName) {
      lodash[methodName].placeholder = lodash;
    });

    // Add `LazyWrapper` methods for `_.drop` and `_.take` variants.
    arrayEach(['drop', 'take'], function(methodName, index) {
      LazyWrapper.prototype[methodName] = function(n) {
        n = n === undefined ? 1 : nativeMax(toInteger(n), 0);

        var result = (this.__filtered__ && !index)
          ? new LazyWrapper(this)
          : this.clone();

        if (result.__filtered__) {
          result.__takeCount__ = nativeMin(n, result.__takeCount__);
        } else {
          result.__views__.push({
            'size': nativeMin(n, MAX_ARRAY_LENGTH),
            'type': methodName + (result.__dir__ < 0 ? 'Right' : '')
          });
        }
        return result;
      };

      LazyWrapper.prototype[methodName + 'Right'] = function(n) {
        return this.reverse()[methodName](n).reverse();
      };
    });

    // Add `LazyWrapper` methods that accept an `iteratee` value.
    arrayEach(['filter', 'map', 'takeWhile'], function(methodName, index) {
      var type = index + 1,
          isFilter = type == LAZY_FILTER_FLAG || type == LAZY_WHILE_FLAG;

      LazyWrapper.prototype[methodName] = function(iteratee) {
        var result = this.clone();
        result.__iteratees__.push({
          'iteratee': getIteratee(iteratee, 3),
          'type': type
        });
        result.__filtered__ = result.__filtered__ || isFilter;
        return result;
      };
    });

    // Add `LazyWrapper` methods for `_.head` and `_.last`.
    arrayEach(['head', 'last'], function(methodName, index) {
      var takeName = 'take' + (index ? 'Right' : '');

      LazyWrapper.prototype[methodName] = function() {
        return this[takeName](1).value()[0];
      };
    });

    // Add `LazyWrapper` methods for `_.initial` and `_.tail`.
    arrayEach(['initial', 'tail'], function(methodName, index) {
      var dropName = 'drop' + (index ? '' : 'Right');

      LazyWrapper.prototype[methodName] = function() {
        return this.__filtered__ ? new LazyWrapper(this) : this[dropName](1);
      };
    });

    LazyWrapper.prototype.compact = function() {
      return this.filter(identity);
    };

    LazyWrapper.prototype.find = function(predicate) {
      return this.filter(predicate).head();
    };

    LazyWrapper.prototype.findLast = function(predicate) {
      return this.reverse().find(predicate);
    };

    LazyWrapper.prototype.invokeMap = baseRest(function(path, args) {
      if (typeof path == 'function') {
        return new LazyWrapper(this);
      }
      return this.map(function(value) {
        return baseInvoke(value, path, args);
      });
    });

    LazyWrapper.prototype.reject = function(predicate) {
      return this.filter(negate(getIteratee(predicate)));
    };

    LazyWrapper.prototype.slice = function(start, end) {
      start = toInteger(start);

      var result = this;
      if (result.__filtered__ && (start > 0 || end < 0)) {
        return new LazyWrapper(result);
      }
      if (start < 0) {
        result = result.takeRight(-start);
      } else if (start) {
        result = result.drop(start);
      }
      if (end !== undefined) {
        end = toInteger(end);
        result = end < 0 ? result.dropRight(-end) : result.take(end - start);
      }
      return result;
    };

    LazyWrapper.prototype.takeRightWhile = function(predicate) {
      return this.reverse().takeWhile(predicate).reverse();
    };

    LazyWrapper.prototype.toArray = function() {
      return this.take(MAX_ARRAY_LENGTH);
    };

    // Add `LazyWrapper` methods to `lodash.prototype`.
    baseForOwn(LazyWrapper.prototype, function(func, methodName) {
      var checkIteratee = /^(?:filter|find|map|reject)|While$/.test(methodName),
          isTaker = /^(?:head|last)$/.test(methodName),
          lodashFunc = lodash[isTaker ? ('take' + (methodName == 'last' ? 'Right' : '')) : methodName],
          retUnwrapped = isTaker || /^find/.test(methodName);

      if (!lodashFunc) {
        return;
      }
      lodash.prototype[methodName] = function() {
        var value = this.__wrapped__,
            args = isTaker ? [1] : arguments,
            isLazy = value instanceof LazyWrapper,
            iteratee = args[0],
            useLazy = isLazy || isArray(value);

        var interceptor = function(value) {
          var result = lodashFunc.apply(lodash, arrayPush([value], args));
          return (isTaker && chainAll) ? result[0] : result;
        };

        if (useLazy && checkIteratee && typeof iteratee == 'function' && iteratee.length != 1) {
          // Avoid lazy use if the iteratee has a "length" value other than `1`.
          isLazy = useLazy = false;
        }
        var chainAll = this.__chain__,
            isHybrid = !!this.__actions__.length,
            isUnwrapped = retUnwrapped && !chainAll,
            onlyLazy = isLazy && !isHybrid;

        if (!retUnwrapped && useLazy) {
          value = onlyLazy ? value : new LazyWrapper(this);
          var result = func.apply(value, args);
          result.__actions__.push({ 'func': thru, 'args': [interceptor], 'thisArg': undefined });
          return new LodashWrapper(result, chainAll);
        }
        if (isUnwrapped && onlyLazy) {
          return func.apply(this, args);
        }
        result = this.thru(interceptor);
        return isUnwrapped ? (isTaker ? result.value()[0] : result.value()) : result;
      };
    });

    // Add `Array` methods to `lodash.prototype`.
    arrayEach(['pop', 'push', 'shift', 'sort', 'splice', 'unshift'], function(methodName) {
      var func = arrayProto[methodName],
          chainName = /^(?:push|sort|unshift)$/.test(methodName) ? 'tap' : 'thru',
          retUnwrapped = /^(?:pop|shift)$/.test(methodName);

      lodash.prototype[methodName] = function() {
        var args = arguments;
        if (retUnwrapped && !this.__chain__) {
          var value = this.value();
          return func.apply(isArray(value) ? value : [], args);
        }
        return this[chainName](function(value) {
          return func.apply(isArray(value) ? value : [], args);
        });
      };
    });

    // Map minified method names to their real names.
    baseForOwn(LazyWrapper.prototype, function(func, methodName) {
      var lodashFunc = lodash[methodName];
      if (lodashFunc) {
        var key = lodashFunc.name + '';
        if (!hasOwnProperty.call(realNames, key)) {
          realNames[key] = [];
        }
        realNames[key].push({ 'name': methodName, 'func': lodashFunc });
      }
    });

    realNames[createHybrid(undefined, WRAP_BIND_KEY_FLAG).name] = [{
      'name': 'wrapper',
      'func': undefined
    }];

    // Add methods to `LazyWrapper`.
    LazyWrapper.prototype.clone = lazyClone;
    LazyWrapper.prototype.reverse = lazyReverse;
    LazyWrapper.prototype.value = lazyValue;

    // Add chain sequence methods to the `lodash` wrapper.
    lodash.prototype.at = wrapperAt;
    lodash.prototype.chain = wrapperChain;
    lodash.prototype.commit = wrapperCommit;
    lodash.prototype.next = wrapperNext;
    lodash.prototype.plant = wrapperPlant;
    lodash.prototype.reverse = wrapperReverse;
    lodash.prototype.toJSON = lodash.prototype.valueOf = lodash.prototype.value = wrapperValue;

    // Add lazy aliases.
    lodash.prototype.first = lodash.prototype.head;

    if (symIterator) {
      lodash.prototype[symIterator] = wrapperToIterator;
    }
    return lodash;
  });

  /*--------------------------------------------------------------------------*/

  // Export lodash.
  var _ = runInContext();

  // Some AMD build optimizers, like r.js, check for condition patterns like:
  if (true) {
    // Expose Lodash on the global object to prevent errors when Lodash is
    // loaded by a script tag in the presence of an AMD loader.
    // See http://requirejs.org/docs/errors.html#mismatch for more details.
    // Use `_.noConflict` to remove Lodash from the global object.
    root._ = _;

    // Define as an anonymous module so, through path mapping, it can be
    // referenced as the "underscore" module.
    !(__WEBPACK_AMD_DEFINE_RESULT__ = function() {
      return _;
    }.call(exports, __webpack_require__, exports, module),
				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
  }
  // Check for `exports` after `define` in case a build optimizer adds it.
  else if (freeModule) {
    // Export for Node.js.
    (freeModule.exports = _)._ = _;
    // Export for CommonJS support.
    freeExports._ = _;
  }
  else {
    // Export to the global object.
    root._ = _;
  }
}.call(this));

/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(35), __webpack_require__(327)(module)))

/***/ }),

/***/ 1531:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_antd_lib_upload_style_css__ = __webpack_require__(1138);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_antd_lib_upload_style_css___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_0_antd_lib_upload_style_css__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_antd_lib_upload__ = __webpack_require__(1139);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_antd_lib_upload___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_1_antd_lib_upload__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2_antd_lib_button_style_css__ = __webpack_require__(88);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2_antd_lib_button_style_css___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_2_antd_lib_button_style_css__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3_antd_lib_button__ = __webpack_require__(74);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3_antd_lib_button___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_3_antd_lib_button__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_4_antd_lib_icon_style_css__ = __webpack_require__(183);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_4_antd_lib_icon_style_css___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_4_antd_lib_icon_style_css__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_5_antd_lib_icon__ = __webpack_require__(27);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_5_antd_lib_icon___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_5_antd_lib_icon__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_6_antd_lib_modal_style_css__ = __webpack_require__(28);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_6_antd_lib_modal_style_css___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_6_antd_lib_modal_style_css__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_7_antd_lib_modal__ = __webpack_require__(29);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_7_antd_lib_modal___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_7_antd_lib_modal__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_8_antd_lib_notification_style_css__ = __webpack_require__(38);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_8_antd_lib_notification_style_css___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_8_antd_lib_notification_style_css__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_9_antd_lib_notification__ = __webpack_require__(39);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_9_antd_lib_notification___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_9_antd_lib_notification__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_10_antd_lib_input_style_css__ = __webpack_require__(60);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_10_antd_lib_input_style_css___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_10_antd_lib_input_style_css__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_11_antd_lib_input__ = __webpack_require__(61);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_11_antd_lib_input___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_11_antd_lib_input__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_12_antd_lib_checkbox_style_css__ = __webpack_require__(323);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_12_antd_lib_checkbox_style_css___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_12_antd_lib_checkbox_style_css__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_13_antd_lib_checkbox__ = __webpack_require__(321);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_13_antd_lib_checkbox___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_13_antd_lib_checkbox__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_14_react__ = __webpack_require__(0);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_14_react___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_14_react__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_15_educoder__ = __webpack_require__(5);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_16_axios__ = __webpack_require__(8);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_16_axios___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_16_axios__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_17__modals_Modals__ = __webpack_require__(180);
var _createClass=function(){function defineProperties(target,props){for(var i=0;i<props.length;i++){var descriptor=props[i];descriptor.enumerable=descriptor.enumerable||false;descriptor.configurable=true;if("value"in descriptor)descriptor.writable=true;Object.defineProperty(target,descriptor.key,descriptor);}}return function(Constructor,protoProps,staticProps){if(protoProps)defineProperties(Constructor.prototype,protoProps);if(staticProps)defineProperties(Constructor,staticProps);return Constructor;};}();function _classCallCheck(instance,Constructor){if(!(instance instanceof Constructor)){throw new TypeError("Cannot call a class as a function");}}function _possibleConstructorReturn(self,call){if(!self){throw new ReferenceError("this hasn't been initialised - super() hasn't been called");}return call&&(typeof call==="object"||typeof call==="function")?call:self;}function _inherits(subClass,superClass){if(typeof superClass!=="function"&&superClass!==null){throw new TypeError("Super expression must either be null or a function, not "+typeof superClass);}subClass.prototype=Object.create(superClass&&superClass.prototype,{constructor:{value:subClass,enumerable:false,writable:true,configurable:true}});if(superClass)Object.setPrototypeOf?Object.setPrototypeOf(subClass,superClass):subClass.__proto__=superClass;}var CheckboxGroup=__WEBPACK_IMPORTED_MODULE_13_antd_lib_checkbox___default.a.Group;var TextArea=__WEBPACK_IMPORTED_MODULE_11_antd_lib_input___default.a.TextArea;var AccessoryModal=function(_Component){_inherits(AccessoryModal,_Component);function AccessoryModal(props){_classCallCheck(this,AccessoryModal);var _this=_possibleConstructorReturn(this,(AccessoryModal.__proto__||Object.getPrototypeOf(AccessoryModal)).call(this,props));_this.shixunhomeworkedit=function(list){_this.setState({group_ids:list});};_this.handleChange=function(info){if(info.file.status==='uploading'||info.file.status==='done'||info.file.status==='removed'){var fileList=info.fileList;console.log(fileList);// for(var list of fileList ){
//   console.log(fileList)
// }
_this.setState({fileList:fileList,Errormessage:false});}};_this.onAttachmentRemove=function(file){// confirm({
//   title: '确定要删除这个附件吗?',
//   okText: '确定',
//   cancelText: '取消',
//   // content: 'Some descriptions',
//   onOk: () => {
//     this.deleteAttachment(file)
//   },
//   onCancel() {
//     console.log('Cancel');
//   },
// });
// return false;
// this.setState({
//   Modalstype:true,
//   Modalstopval:'确定要删除这个附件吗?',
//   ModalSave: ()=>this.deleteAttachment(file),
//   ModalCancel:this.cancelAttachment
// })
// return false;
if(!file.percent||file.percent==100){_this.deleteAttachment(file);}};_this.deleteAttachment=function(file){var url="/attachments/"+(file.response?file.response.id:file.uid)+".json";__WEBPACK_IMPORTED_MODULE_16_axios___default.a.delete(url,{}).then(function(response){if(response.data){var status=response.data.status;if(status==0){console.log('--- success');_this.setState(function(state){var index=state.fileList.indexOf(file);var newFileList=state.fileList.slice();newFileList.splice(index,1);return{fileList:newFileList};});}}}).catch(function(error){console.log(error);});};_this.ModalCancelModalCancel=function(){_this.setState({Modalstype:false,Modalstopval:"",ModalSave:_this.ModalCancelModalCancel,loadtype:false,shixunsreplace:false});_this.props.Cancel();};_this.Saves=function(){var id=_this.props.categoryid;var _this$state=_this.state,fileList=_this$state.fileList,description=_this$state.description;var newfileList=[];if(fileList!=undefined&&fileList.length>0){var _iteratorNormalCompletion=true;var _didIteratorError=false;var _iteratorError=undefined;try{for(var _iterator=fileList[Symbol.iterator](),_step;!(_iteratorNormalCompletion=(_step=_iterator.next()).done);_iteratorNormalCompletion=true){var list=_step.value;newfileList.push(list.response.id);}}catch(err){_didIteratorError=true;_iteratorError=err;}finally{try{if(!_iteratorNormalCompletion&&_iterator.return){_iterator.return();}}finally{if(_didIteratorError){throw _iteratorError;}}}}if(newfileList.length==0){// this.props.showNotification('请先上传附件')
if(_this.props.modalname==="补交附件"){_this.setState({Errormessage:true,shixunsreplace:false});}else{_this.setState({shixunsreplace:true,Errormessage:false});}return;}else{_this.setState({shixunsreplace:false,Errormessage:false});}var url=_this.props.reviseAttachmentUrl||"/graduation_works/"+id+"/revise_attachment.json";__WEBPACK_IMPORTED_MODULE_16_axios___default.a.post(url,{description:description,attachment_ids:newfileList}).then(function(result){if(result.data.status===0){_this.props.Cancel();_this.props.setupdate();// this.setState({
//   Modalstype:true,
//   Modalstopval:result.data.message,
//   ModalSave:this.ModalCancelModalCancel,
//   loadtype:true
// })
_this.ModalCancelModalCancel();__WEBPACK_IMPORTED_MODULE_9_antd_lib_notification___default.a.open({message:'提示',description:'提交成功'});if(_this.props.seeworks!=undefined){_this.props.history.push(_this.props.seeworks);}}}).catch(function(error){});};_this.settextarea=function(e){_this.setState({description:e.target.value});};_this.hidestartshixunsreplace=function(){var id=_this.props.categoryid;var _this$state2=_this.state,fileList=_this$state2.fileList,description=_this$state2.description;var newfileList=[];if(fileList!=undefined&&fileList.length>0){var _iteratorNormalCompletion2=true;var _didIteratorError2=false;var _iteratorError2=undefined;try{for(var _iterator2=fileList[Symbol.iterator](),_step2;!(_iteratorNormalCompletion2=(_step2=_iterator2.next()).done);_iteratorNormalCompletion2=true){var list=_step2.value;newfileList.push(list.response.id);}}catch(err){_didIteratorError2=true;_iteratorError2=err;}finally{try{if(!_iteratorNormalCompletion2&&_iterator2.return){_iterator2.return();}}finally{if(_didIteratorError2){throw _iteratorError2;}}}}var url=_this.props.reviseAttachmentUrl||"/graduation_works/"+id+"/revise_attachment.json";__WEBPACK_IMPORTED_MODULE_16_axios___default.a.post(url,{description:description,attachment_ids:newfileList}).then(function(result){if(result.data.status===0){_this.props.Cancel();_this.props.setupdate();// this.setState({
//   Modalstype:true,
//   Modalstopval:result.data.message,
//   ModalSave:this.ModalCancelModalCancel,
//   loadtype:true
// })
_this.ModalCancelModalCancel();__WEBPACK_IMPORTED_MODULE_9_antd_lib_notification___default.a.open({message:'提示',description:'提交成功'});if(_this.props.seeworks!=undefined){_this.props.history.push(_this.props.seeworks);}}}).catch(function(error){});};_this.hidestartshixunsreplacetwo=function(){_this.setState({shixunsreplace:false});};_this.state={group_ids:[],fileList:[],Modalstype:false,Modalstopval:"",ModalCancel:"",ModalSave:"",loadtype:false,updatas:false,shixunsreplace:false,Errormessage:false,description:undefined};return _this;}_createClass(AccessoryModal,[{key:"componentDidMount",value:function componentDidMount(){}//勾选实训
// 附件相关 START
//确认
//取消
},{key:"render",value:function render(){var _this2=this;var _state=this.state,settextarea=_state.settextarea,fileList=_state.fileList,Modalstype=_state.Modalstype,Modalstopval=_state.Modalstopval,ModalCancel=_state.ModalCancel,ModalSave=_state.ModalSave,loadtype=_state.loadtype,shixunsreplace=_state.shixunsreplace,description=_state.description;var course_groups=this.props.course_groups;var uploadProps={width:600,// https://github.com/ant-design/ant-design/issues/15505
// showUploadList={false}，然后外部拿到 fileList 数组自行渲染列表。
// showUploadList: false,
action:""+Object(__WEBPACK_IMPORTED_MODULE_15_educoder__["R" /* getUploadActionUrl */])(),onChange:this.handleChange,onRemove:this.onAttachmentRemove,beforeUpload:function beforeUpload(file){console.log('beforeUpload',file.name);var isLt150M=file.size/1024/1024<150;if(!isLt150M){_this2.props.showNotification('文件大小必须小于150MB!');}return isLt150M;}};return __WEBPACK_IMPORTED_MODULE_14_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_14_react___default.a.Fragment,null,__WEBPACK_IMPORTED_MODULE_14_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_7_antd_lib_modal___default.a,{keyboard:false,title:"\u63D0\u793A",visible:shixunsreplace,closable:false,footer:null},__WEBPACK_IMPORTED_MODULE_14_react___default.a.createElement("div",{className:"task-popup-content"},__WEBPACK_IMPORTED_MODULE_14_react___default.a.createElement("p",{className:"task-popup-text-center font-16 "},"\u8FD8\u672A\u4E0A\u4F20\u9644\u4EF6"),__WEBPACK_IMPORTED_MODULE_14_react___default.a.createElement("p",{className:"task-popup-text-center font-16 pb20"},"\u662F\u5426\u786E\u8BA4\u63D0\u4EA4\u4F5C\u54C1?")),__WEBPACK_IMPORTED_MODULE_14_react___default.a.createElement("div",{className:"task-popup-submit clearfix"},__WEBPACK_IMPORTED_MODULE_14_react___default.a.createElement("a",{className:"task-btn task-btn-orange fr ",onClick:function onClick(){return _this2.hidestartshixunsreplace();}},"\u786E\u8BA4"),__WEBPACK_IMPORTED_MODULE_14_react___default.a.createElement("a",{className:"task-btn fr mr50",onClick:function onClick(){return _this2.hidestartshixunsreplacetwo();}},"\u53D6\u6D88"))),__WEBPACK_IMPORTED_MODULE_14_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_17__modals_Modals__["a" /* default */],{modalsType:Modalstype,modalsTopval:Modalstopval,modalCancel:ModalCancel,modalSave:ModalSave,loadtype:loadtype}),__WEBPACK_IMPORTED_MODULE_14_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_7_antd_lib_modal___default.a,{keyboard:false,className:"HomeworkModal",title:this.props.modalname,visible:this.props.visible,closable:false,footer:null,destroyOnClose:true},__WEBPACK_IMPORTED_MODULE_14_react___default.a.createElement("div",{className:"task-popup-content"},__WEBPACK_IMPORTED_MODULE_14_react___default.a.createElement("p",{className:"task-popup-text-center font-16"},__WEBPACK_IMPORTED_MODULE_14_react___default.a.createElement("span",{className:"color-blue underline"}," ")),__WEBPACK_IMPORTED_MODULE_14_react___default.a.createElement("style",null,"\n                .uploadBtn.ant-btn {\n                  border: none;\n                  color: #4CACFF;\n                  box-shadow: none;\n                  background: transparent;\n                  padding: 0 6px;\n                }\n                .ant-upload-list-item:hover .ant-upload-list-item-info{\n                  background-color:#fff;\n                }\n                .upload_1 .ant-upload-list {\n                  width: 350px;\n                }\n                .ant-upload-select{\n                  float: left;\n                }\n                .ant-upload-list :nth-child(1).ant-upload-list-item {\n                 margin-top:31px;\n                }\n              "),__WEBPACK_IMPORTED_MODULE_14_react___default.a.createElement("p",null,__WEBPACK_IMPORTED_MODULE_14_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_1_antd_lib_upload___default.a,Object.assign({},uploadProps,{fileList:this.state.fileList,className:"upload_1"}),__WEBPACK_IMPORTED_MODULE_14_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_3_antd_lib_button___default.a,{className:"uploadBtn"},__WEBPACK_IMPORTED_MODULE_14_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_5_antd_lib_icon___default.a,{type:"upload"})," \u9009\u62E9\u6587\u4EF6"),"(\u5355\u4E2A\u6587\u4EF6\u6700\u5927150M)")),__WEBPACK_IMPORTED_MODULE_14_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_15_educoder__["z" /* WordNumberTextarea */],{placeholder:"\u8BF7\u5728\u6B64\u8F93\u5165\u8865\u4EA4\u9644\u4EF6\u7684\u539F\u56E0\uFF0C\u6700\u5927\u9650\u5236"+(this.props.maxFontLength||100)+"\u4E2A\u5B57\u7B26",onInput:function onInput(e){return _this2.settextarea(e);},value:description,maxlength:100}),this.state.Errormessage&&this.state.Errormessage===true?__WEBPACK_IMPORTED_MODULE_14_react___default.a.createElement("p",{className:"color-red  mt5 mb5  ",style:{width:" 100%",height:"20px"}},__WEBPACK_IMPORTED_MODULE_14_react___default.a.createElement("span",{className:"fl",style:{textAlign:"left",width:" 100%"}},"\u8FD8\u672A\u4E0A\u4F20\u9644\u4EF6")):"",this.state.updatas===true?__WEBPACK_IMPORTED_MODULE_14_react___default.a.createElement("span",{className:"color-red"},"\u8BF7\u4E0A\u4F20\u9644\u4EF6"):"",__WEBPACK_IMPORTED_MODULE_14_react___default.a.createElement("div",{className:"clearfix mt30 edu-txt-center mb10"},__WEBPACK_IMPORTED_MODULE_14_react___default.a.createElement("a",{className:"task-btn color-white mr30",onClick:this.props.Cancel},this.props.Cancelname||'取消'),__WEBPACK_IMPORTED_MODULE_14_react___default.a.createElement("a",{className:"task-btn task-btn-orange",onClick:function onClick(){return _this2.Saves();}},this.props.Savesname||'确认')))));}}]);return AccessoryModal;}(__WEBPACK_IMPORTED_MODULE_14_react__["Component"]);/* harmony default export */ __webpack_exports__["a"] = (AccessoryModal);

/***/ }),

/***/ 1557:
/***/ (function(module, exports, __webpack_require__) {

// style-loader: Adds some css to the DOM by adding a <style> tag

// load the styles
var content = __webpack_require__(1558);
if(typeof content === 'string') content = [[module.i, content, '']];
// Prepare cssTransformation
var transform;

var options = {"hmr":false}
options.transform = transform
// add the styles to the DOM
var update = __webpack_require__(318)(content, options);
if(content.locals) module.exports = content.locals;


/***/ }),

/***/ 1558:
/***/ (function(module, exports, __webpack_require__) {

exports = module.exports = __webpack_require__(317)(true);
// imports


// module
exports.push([module.i, ".searchinput{width:800px;margin-top:53px}.newshixunheadersear{display:-ms-flexbox;display:flex;-ms-flex-pack:center;justify-content:center}.packinput .ant-input{height:55px;width:663px!important;font-size:14px;border-color:#e1edf8!important;padding-left:20px}.packinput .ant-input-group-addon .ant-btn{width:137px!important;font-size:18px;height:53px;background:#4cacff}.tabtitle{-webkit-box-shadow:3px 10px 21px 0 rgba(76,76,76,.15);box-shadow:3px 10px 21px 0 rgba(76,76,76,.15);border-radius:6px;display:-ms-flexbox;display:flex;-ms-flex-pack:center;justify-content:center}.tabtitle,.tabtitles2{height:62px!important;background:#fff}.tabtitles2{width:1200px}.tabtitless{height:62px!important;line-height:62px!important}.tabtitle2{margin-left:30px!important}.counttit{display:-ms-flexbox;display:flex;-ms-flex-pack:center;justify-content:center}.counttittext{text-align:left;width:1200px;height:18px;color:#888;font-size:13px;margin-top:24px}.counttittexts{color:#4cacff!important;font-size:13px}.mainx{display:-ms-flexbox;display:flex;-ms-flex-pack:center;justify-content:center;margin-top:17px}.project-package-item{display:-ms-flexbox;display:flex;-ms-flex-direction:column;flex-direction:column;margin-bottom:20px;padding:20px;background:#fff}.magr11{margin-top:11px}.fonttext{font-size:20px;font-weight:700}.fontextcolor{color:#777}.tzbq{margin-left:68px}.bjyss{background:#f8f8f8}.zj{overflow:hidden;-o-text-overflow:ellipsis;text-overflow:ellipsis;white-space:nowrap}.ziticor{color:#777;font-size:13px}.foohter{margin-top:20px;display:-ms-flexbox;display:flex;-ms-flex-direction:row;flex-direction:row}.maxwidth1100{white-space:nowrap;font-size:18px!important;font-weight:500;color:#333!important}.maxwidth1100,.newshixunmodelmidfont{max-width:1100px;overflow:hidden;-o-text-overflow:ellipsis;text-overflow:ellipsis}.newshixunmodelmidfont{font-size:14px;color:#999;display:-webkit-box;-webkit-line-clamp:2}.newshixunmodelbotfont,.newshixunmodelmidfont{font-weight:400;margin-top:15px;margin-left:30px}.newshixunmodelbotfont{font-size:12px;color:#666}.newshixunlist{max-height:227px;width:1200px}.xuxianpro{height:20px;border-bottom:1px dashed;border-color:#eaeaea;margin-bottom:18px}.newshixunpd030{padding:0 30px}.pd303010{padding:30px 30px 10px}.newshixunfont12{font-size:12px;color:#4cacff;line-height:21px}.newshixunmode{width:100px;height:38px;border-radius:3px}.ntopsj{position:absolute;top:-4px}.nyslbottomsj{position:absolute;bottom:-6px}.inherits .ant-dropdown-menu-item{cursor:inherit!important}.menus{width:91px;text-align:center}.newshixunmodelbotfont span{display:inline-block;margin-right:34px}.minhegiht300{min-height:300px}.newshixunlist:hover{-webkit-box-shadow:1px 6px 16px hsla(0,0%,61%,.16);box-shadow:1px 6px 16px hsla(0,0%,61%,.16);opacity:1;border-radius:2px}.newshixun500{max-width:500px;overflow:hidden;-o-text-overflow:ellipsis;text-overflow:ellipsis;white-space:nowrap}.mt3{margin-top:3px!important}.highlight{color:#4cacff}.newshixunbottombtn{position:fixed;z-index:1000;bottom:0;width:100%;height:63px;background:#fff;-webkit-box-shadow:0 -4px 4px 0 rgba(0,0,0,.05);box-shadow:0 -4px 4px 0 rgba(0,0,0,.05)}.mb60shixun{margin-bottom:60px!important}.padding13-30{padding:13px 30px;-webkit-box-sizing:border-box;box-sizing:border-box}.displaymodulat{display:-ms-flexbox;display:flex;display:-webkit-flex;-ms-flex-direction:column;flex-direction:column;-ms-flex-align:center;align-items:center}.WordNumberTextarea{outline:none;appearance:none;-webkit-appearance:none;-moz-appearance:none;background-color:#fff;text-shadow:none;-webkit-writing-mode:horizontal-tb!important;-webkit-tap-highlight-color:rgba(0,0,0,0);resize:none;width:100%;height:130px;border:none;display:block}.WordNumbernote{padding:0;margin:0;list-style:none;text-decoration:none;-webkit-box-sizing:border-box;box-sizing:border-box;overflow:hidden;height:auto;border:1px solid #eaeaea;border-radius:.125rem;margin:10px 10px 0;padding:10px 10px 5px;backgroud:#eaeaea;width:530px;margin-left:10px;margin-top:5px;height:214px!important}.WordNumbernote .WordNumberTextarea{outline:none;appearance:none;-webkit-appearance:none;-moz-appearance:none;background-color:#fff;text-shadow:none;-webkit-writing-mode:horizontal-tb!important;-webkit-tap-highlight-color:rgba(0,0,0,0);resize:none;width:100%;height:169px!important;border:none;display:block}.WordNumberTextarea-count{display:inline-block;float:right;font-size:16px;color:#adadad;padding-right:.25rem}.borerinput{border:1px solid #dd1717!important}.borerinputs{border:1px solid #eee!important}.mexertwo{display:-ms-flexbox;display:flex;-ms-flex-direction:initial;flex-direction:row}.mexeheigth,.mexeheigth2{line-height:40px}.mexeheigth2{width:74px}.minbuttionte{margin-top:20px;width:100%;margin-bottom:17px;-ms-flex-direction:column;flex-direction:column;-ms-flex-align:center;align-items:center;-ms-flex-pack:center;justify-content:center}.initialflex,.minbuttionte{display:-ms-flexbox;display:flex;-ms-flex-direction:initial;flex-direction:row}.newshixunheadersear,.newshixunmodels{margin:0 auto}.myysljupyter{width:54px;height:24px;text-align:center;border-radius:5px;border:1px solid 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margin: 0 auto;\n}\n.myysljupyter{\n    width:54px;\n    height:24px;\n    text-align: center;\n    border-radius:5px;\n    border:1px solid #FF6802;\n}\n.myysljupytertest{\n    width:54px;\n    height:16px;\n    line-height:16px;\n    font-size:12px;\n    color:#FF6802;\n    line-height:16px;\n}\n.intermediatecenter{\n     display: -ms-flexbox;\n     display: flex;\n     -ms-flex-direction: column;\n         flex-direction: column;\n     -ms-flex-align: center;\n         align-items: center;\n     -ms-flex-pack: center;\n         justify-content: center;\n }\n\n\n/* 中间居中 */\n.intermediatecenter{\n    display: -ms-flexbox;\n    display: flex;\n    -ms-flex-direction: column;\n        flex-direction: column;\n    -ms-flex-align: center;\n        align-items: center;\n    -ms-flex-pack: center;\n        justify-content: center;\n}\n/* 简单居中 */\n.intermediatecenterysls{\n    display: -ms-flexbox;\n    display: flex;\n    -ms-flex-align: center;\n        align-items: center;\n}\n.spacearound{\n    display: -ms-flexbox;\n    display: flex;\n    -ms-flex-pack: distribute;\n        justify-content: space-around;\n\n}\n.spacebetween{\n    display: -ms-flexbox;\n    display: flex;\n    -ms-flex-pack: justify;\n        justify-content: space-between;\n}\n/* 头顶部居中 */\n.topcenter{\n    display: -webkit-flex;\n    -ms-flex-direction: column;\n        flex-direction: column;\n    -ms-flex-align: center;\n        align-items: center;\n\n}\n\n\n/* x轴正方向排序 */\n/* 一 二 三 四 五 六 七 八 */\n.sortinxdirection{\n    display: -ms-flexbox;\n    display: flex;\n    -ms-flex-direction:row;\n        flex-direction:row;\n}\n/* x轴反方向排序 */\n/* 八    七   六  五   四  三  二 一 */\n.xaxisreverseorder{\n    display: -ms-flexbox;\n    display: flex;\n    -ms-flex-direction:row-reverse;\n        flex-direction:row-reverse;\n}\n/* 垂直布局 正方向*/\n/* 一\n 二\n 三\n 四\n 五\n 六\n 七\n 八 */\n.verticallayout{\n    display: -ms-flexbox;\n    display: flex;\n    -ms-flex-direction:column;\n        flex-direction:column;\n}\n/* 垂直布局 反方向*/\n.reversedirection{\n    display: -ms-flexbox;\n    display: flex;\n    -ms-flex-direction:column-reverse;\n        flex-direction:column-reverse;\n}\n\n.nandu{\n    width: 42px;\n    height: 19px;\n    font-size: 14px;\n    color: #000000;\n    line-height: 19px;\n    margin-left: 6px;\n}\n\n.clickbuts{\n    text-align: center;\n    width: 60px;\n    height: 32px;\n    background: #4CACFF;\n    border-radius: 16px;\n    line-height: 30px;\n    color: #FFFFFF;\n    cursor:pointer;\n}\n.clickbutst{\n    height:19px;\n    font-size:14px;\n    color:#505050;\n    line-height:19px;\n    cursor:pointer;\n}\n\n.clickbutstwo{\n    text-align: center;\n    width: 85px;\n    height: 32px;\n    background: #4CACFF;\n    border-radius: 16px;\n    line-height: 30px;\n    color: #FFFFFF;\n    cursor:pointer;\n}\n.clickbutstwos{\n    height:19px;\n    font-size:14px;\n    color:#505050;\n    line-height:19px;\n    cursor:pointer;\n}\n"],"sourceRoot":""}]);

// exports


/***/ }),

/***/ 1564:
/***/ (function(module, exports, __webpack_require__) {

// style-loader: Adds some css to the DOM by adding a <style> tag

// load the styles
var content = __webpack_require__(1578);
if(typeof content === 'string') content = [[module.i, content, '']];
// Prepare cssTransformation
var transform;

var options = {"hmr":false}
options.transform = transform
// add the styles to the DOM
var update = __webpack_require__(318)(content, options);
if(content.locals) module.exports = content.locals;


/***/ }),

/***/ 1578:
/***/ (function(module, exports, __webpack_require__) {

exports = module.exports = __webpack_require__(317)(true);
// imports


// module
exports.push([module.i, ".panel-comment_item .t_area{font-size:12px;color:#ccc}.panel-comment_item .orig_reply i{font-size:14px!important;margin-left:12px}.panel-comment_item ol.linenums{overflow:auto}.panel-comment_item .rewarded{color:#ff7500!important}.panel-comment_item .rewarded.normalUser{cursor:inherit}#tab_con_4 .-layout-v{overflow-y:auto}#tab_con_4 .rc-pagination{margin:12px auto 20px}.rc-pagination{width:-webkit-fit-content;width:-moz-fit-content;width:fit-content}.comment_content img{max-width:23%!important}#mini_comment_section .df .ke-container{border-radius:15px}#mini_comment_section .df .buttons{width:70px;margin-bottom:5px}#mini_comment_section .buttons i{font-size:18px;color:#656565;vertical-align:baseline}#mini_comment_section i.newReplyIcon{color:#4dacff;cursor:pointer}#mini_comment_section .buttons{margin-bottom:10px}#mini_comment_section .buttons>p{margin-top:4px;display:none}#mini_comment_section .df .buttons>p{margin-top:14px;display:block}#mini_comment_section{height:auto;background-color:#fff;display:-ms-flexbox;display:flex;-webkit-box-shadow:0 -3px 5px 0 rgba(76,172,255,.2);box-shadow:0 -3px 5px 0 rgba(76,172,255,.2);z-index:99}#mini_comment_section #editor_panel{margin-bottom:9px}#mini_comment_section #editor_panel>div:first-child{position:absolute;bottom:8px;right:88px}#mini_comment_section .ke-toolbar-icon-url{background-image:url(" + __webpack_require__(1579) + ");background-position:0 0;background-size:30px 30px;width:30px;height:30px}#mini_comment_section .ke-outline{height:30px;margin-bottom:-11px;width:30px;margin-right:-5px;border:none;margin:0;padding:0;position:absolute;top:-30px;left:-30px;left:-24px;z-index:999}#mini_comment_section i.replyIcon{font-size:20px}#shixun_comment_block .dot{height:4px;border-radius:2px;background-color:#4cacff;width:4px;position:relative;bottom:30px;left:18px;display:block}#mini_comment_section .ke-container{border-radius:6px;border-color:#eaeaea}.commentTxt{width:100%;height:95px;border:1px solid #eaeaea;border-radius:10px;padding-left:5px}#game_praise_tread{cursor:pointer}.commentsbtn{margin-top:2px}#shixun_comment_block{margin:0 10px;margin-bottom:-2px}.panel-comment_item a.task-btn-orange{background:#4cacff}.childrenCommentsView{background:#f4f4f4;border-radius:4px;margin-bottom:6px;position:relative;margin-top:6px}.childrenCommentsView .trangle{position:absolute;border-color:#000;width:0;height:0;border-left:5px solid transparent;border-right:5px solid transparent;border-bottom:5px solid #f4f4f4;left:13px;top:-9px;border-bottom:10px solid #f4f4f4}.childComment{padding:2px 8px}.childComment .iconfont.icon-jiangli{margin-top:2px}.childComment:hover{background:#ebebeb}.childComment .iconfont{display:none}.childComment p.orig_reply{margin-bottom:0}.childComment:hover .iconfont{display:inline}.blink{animation:blink-animation 3s steps(5,start) infinite;-webkit-animation:blink-animation 3s steps(5,start) infinite}@keyframes blink-animation{to{visibility:hidden}}@-webkit-keyframes blink-animation{to{visibility:hidden}}.J_Comment_Reply img.emoji{width:24px}.noCommentTitle{text-align:center;margin-top:20px;font-size:16px;height:100px;line-height:100px}.break_word_comments{word-break:break-word;width:100%;word-wrap:break-word;margin-bottom:4px;margin-top:4px}.childComment .break_word_comments{line-height:22px}form.df .tips{display:none}.loadMoreChildComments{text-align:center;height:24px;background:#f1f1f1;cursor:pointer}.loadMoreChildComments i.icon-xiajiantou{position:relative;bottom:5px}", "", 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{\r\n\t/*overflow-y: scroll;*/\r\n}\r\n/*评论列表*/\r\n.panel-comment_item .t_area {\r\n\tfont-size: 12px;\r\n    color: #CCCCCC;\r\n}\r\n.panel-comment_item .orig_reply i {\r\n    font-size: 14px !important;\r\n    margin-left: 12px;\r\n}   \r\n    /* ke style 代码块*/\r\n    .panel-comment_item ol.linenums {\r\n        overflow: auto;\r\n    }\r\n    .panel-comment_item .rewarded {\r\n        color: #FF7500!important\r\n    }\r\n    .panel-comment_item .rewarded.normalUser {\r\n        cursor: inherit;\r\n    }\r\n#tab_con_4 .-layout-v {\r\n\toverflow-y: auto;\r\n}\r\n#tab_con_4 .rc-pagination {\r\n    margin-left: auto;\r\n    margin-right: auto;\r\n    margin-top: 12px;\r\n    margin-bottom: 20px;\r\n}\r\n.rc-pagination {\r\n    width: -webkit-fit-content;\r\n    width: -moz-fit-content;\r\n    width: fit-content;\r\n}\r\n\r\n.comment_content img {\r\n    max-width: 23% !important;\r\n}\r\n\r\n/*  ----------------------------------------------------- CommentInput START */\r\n\r\n/*收起的时候radius变化*/\r\n#mini_comment_section .df .ke-container {\r\n    border-radius: 15px;\r\n\r\n}\r\n#mini_comment_section .df .buttons {\r\n    width: 70px;\r\n     margin-bottom: 5px;\r\n}\r\n    #mini_comment_section .buttons i {\r\n        font-size: 18px;\r\n        color: #656565;\r\n        vertical-align: baseline;\r\n    }\r\n    #mini_comment_section i.newReplyIcon {\r\n        color: #4DACFF;\r\n        cursor: pointer;\r\n    }\r\n    #mini_comment_section .buttons {\r\n        margin-bottom: 10px;\r\n    }\r\n    #mini_comment_section .buttons>p {\r\n        margin-top: 4px;\r\n        display: none;\r\n    }\r\n    #mini_comment_section .df .buttons>p {\r\n        margin-top: 14px;\r\n        display: block;\r\n    }\r\n    #mini_comment_section {\r\n        height: auto;\r\n        background-color: #FFF;\r\n        /*border-top: 1px solid #f0f1fe;*/\r\n        display: -ms-flexbox;\r\n        display: flex;\r\n        -webkit-box-shadow: 0px -3px 5px 0px rgba(76, 172, 255, 0.2);\r\n                box-shadow: 0px -3px 5px 0px rgba(76, 172, 255, 0.2);\r\n        z-index: 99;\r\n    }   \r\n        #mini_comment_section #editor_panel {\r\n            margin-bottom: 9px\r\n        }\r\n        /* commentInput 上传图片的图标挪动到左下*/\r\n        #mini_comment_section #editor_panel>div:nth-child(1) {\r\n            position: absolute;\r\n            bottom: 8px;\r\n            right: 88px; \r\n        }\r\n            #mini_comment_section .ke-toolbar-icon-url {\r\n                background-image: url('../../images/tpi/upload-image.png');\r\n                background-position: 0px 0px;\r\n                background-size: 30px 30px;\r\n                width: 30px;\r\n                height: 30px;\r\n            }\r\n            \r\n    #mini_comment_section .ke-outline {\r\n        height: 30px;\r\n        margin-bottom: -11px;\r\n        width: 30px;\r\n        margin-right: -5px;\r\n        border: none;\r\n        margin: 0px;\r\n        padding: 0px;\r\n        /* ie上传图片看不见的问题 */\r\n        position: absolute;\r\n        top: -30px;\r\n        left: -30px;\r\n        left: -24px;\r\n        z-index: 999;\r\n    }\r\n\r\n    #mini_comment_section i.replyIcon {\r\n        font-size: 20px;\r\n    }\r\n    #shixun_comment_block .dot {\r\n        width: 4px;\r\n        height: 4px;\r\n        border-radius: 2px;\r\n        background-color: #4CACFF;\r\n        width: 4px;\r\n        position: relative;\r\n        bottom: 30px;\r\n        left: 18px;\r\n        display: block;\r\n    }\r\n\r\n#mini_comment_section .ke-container {\r\n    border-radius: 6px;\r\n    border-color: #EAEAEA;\r\n    /*max-height: 400px;  */\r\n    /*解决上传图片后看不到评论按钮的问题*/\r\n}\r\n.commentTxt{\r\n    width: 100%;\r\n    height: 95px;\r\n    border:1px solid #EAEAEA;\r\n    border-radius: 10px;\r\n    padding-left: 5px;\r\n}\r\n#game_praise_tread {\r\n    cursor: pointer;\r\n}\r\n.commentsbtn {\r\n    margin-top: 2px;\r\n}\r\n\r\n#shixun_comment_block {\r\n    margin: 0px 10px;\r\n    margin-bottom: -2px;\r\n}\r\n\r\n.panel-comment_item a.task-btn-orange {\r\n    background: #4CACFF;\r\n}\r\n\r\n/*  ----------------------------------------------------- CommentInput END */\r\n.childrenCommentsView {\r\n    background: #F4F4F4;\r\n    border-radius: 4px;\r\n    margin-bottom: 6px;\r\n    position: relative;\r\n    margin-top: 6px;\r\n}\r\n    .childrenCommentsView .trangle{\r\n        position: absolute;\r\n        border-color: black;\r\n        width: 0;\r\n        height: 0;\r\n        border-left: 5px solid transparent;\r\n        border-right: 5px solid transparent;\r\n        border-bottom: 5px solid #F4F4F4;\r\n        left: 13px;\r\n        top: -9px;\r\n        border-bottom: 10px solid #F4F4F4;\r\n    }\r\n.childComment {\r\n    padding: 2px 8px;\r\n}\r\n    .childComment .iconfont.icon-jiangli {\r\n        margin-top: 2px;\r\n    }\r\n\r\n\r\n.childComment:hover {\r\n    background: #EBEBEB;\r\n}\r\n    .childComment .iconfont {\r\n        display: none;\r\n    }\r\n    .childComment p.orig_reply {\r\n        margin-bottom: 0px;\r\n    }\r\n    .childComment:hover .iconfont{\r\n        display: inline;\r\n    }\r\n.noCommentTitle {\r\n    text-align: center;\r\n    margin-top: 20px;\r\n    font-size: 16px;\r\n}\r\n\r\n.blink {\r\n  animation: blink-animation 3s steps(5, start) infinite;\r\n  -webkit-animation: blink-animation 3s steps(5, start) infinite;\r\n}\r\n@keyframes blink-animation {\r\n  to {\r\n    visibility: hidden;\r\n  }\r\n}\r\n@-webkit-keyframes blink-animation {\r\n  to {\r\n    visibility: hidden;\r\n  }\r\n}\r\n\r\n\r\n/*md 编辑器   emoji */\r\n.J_Comment_Reply img.emoji {\r\n    width: 24px;\r\n}\r\n\r\n.noCommentTitle {\r\n    text-align: center;\r\n    margin-top: 20px;\r\n    font-size: 16px;\r\n    height: 100px;\r\n    line-height: 100px;\r\n}\r\n\r\n.break_word_comments{\r\n    /* 这个样式影响到了行高 */\r\n    /* white-space: pre-wrap!important; */\r\n    word-break: break-word;\r\n    /* 影响了 ul li的样式： https://testeduplus2.educoder.net/courses/1748/common_homeworks/12131/740898/appraise */\r\n    /* line-height: 14px; */\r\n    width: 100%;\r\n    word-wrap: break-word;\r\n    margin-bottom: 4px;\r\n    margin-top: 4px;\r\n}\r\n.childComment .break_word_comments{\r\n    line-height: 22px;\r\n}\r\n\r\nform.df .tips {\r\n    display: none;\r\n}\r\n\r\n.loadMoreChildComments {\r\n    text-align: center;\r\n    height: 24px;\r\n    background: #F1F1F1;\r\n    cursor: pointer;\r\n\r\n}\r\n    .loadMoreChildComments i.icon-xiajiantou {\r\n        position: relative;\r\n        bottom: 5px;\r\n    }"],"sourceRoot":""}]);

// exports


/***/ }),

/***/ 1579:
/***/ (function(module, exports) {

module.exports = "data:image/png;base64,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"

/***/ }),

/***/ 1696:
/***/ (function(module, exports, __webpack_require__) {

// style-loader: Adds some css to the DOM by adding a <style> tag

// load the styles
var content = __webpack_require__(1751);
if(typeof content === 'string') content = [[module.i, content, '']];
// Prepare cssTransformation
var transform;

var options = {"hmr":false}
options.transform = transform
// add the styles to the DOM
var update = __webpack_require__(318)(content, options);
if(content.locals) module.exports = content.locals;


/***/ }),

/***/ 1751:
/***/ (function(module, exports, __webpack_require__) {

exports = module.exports = __webpack_require__(317)(true);
// imports


// module
exports.push([module.i, ".educontent{margin-bottom:20px}#forum_index_list{min-height:400px;position:relative}#forum_index_list .forum_table .forum_table_item{background:#fff}.noMemosTip{position:absolute;right:10px;top:58px;z-index:999}#forum_list{background:#f9f9f9}#forum_list .return_btn{line-height:38px;font-size:14px;cursor:pointer}#forum_list .return_btn.no_mr{margin-right:-24px!important}div#forum_list>div{background:#fff}.memoContent img{max-width:815px}.memoReplies{position:relative;margin-top:8px}.memoReplies .-fit{position:static}.replies_count{margin-left:12px}.replies_count .label{color:#666}.replies_count .count{color:#999;margin-left:10px}.memoMore{padding-top:10px;height:50px;line-height:50px;text-align:center;color:#459be6;cursor:pointer;position:relative}.memoMore .writeCommentBtn{position:absolute;right:0;color:#666;top:15px}.memoMore .writeCommentBtn:hover{color:#4dacff}.panel-comment_item .comment_orig_content{width:705px}.iconfont.icon-xiazai{font-size:22px!important;margin-right:6px}.forum_table_item{padding-left:20px}.forum_table_item .btn-top{border-radius:11px;padding:0 6px;background:#ff4343}.edu-position-hide{position:absolute;top:15px;left:-20px;-webkit-box-shadow:0 2px 8px rgba(146,153,169,.5);box-shadow:0 2px 8px rgba(146,153,169,.5);background:#fff;z-index:1001;padding:5px 0;z-index:999999}.edu-position-hide li a:hover{background:#4cacff;color:#fff}.edu-position-hidebox>a:link{color:#4cacff}.edu-position-hidebox:hover .edu-position-hide{display:block}.edu-position-hide li a{display:inline-block;height:30px;width:100px;line-height:30px;text-align:center;font-size:12px!important}.ui-widget-header{border:1px solid #4cacff;background:#4cacff}.iconfont.icon-fujian{color:#29bd8b}.ecSelect{width:300px}.ecSelect .rc-select-selection{height:40px}.ecSelect .rc-select-search--inline .rc-select-search__field{padding-top:6px}.ecSelect .rc-select-arrow,.ecSelect .rc-select-selection--single .rc-select-selection-selected-value,.ecSelect .rc-select-selection__placeholder{top:6px}.defalutCancelbtn{cursor:pointer}.defalutSubmitbtnysl{display:block;border:1px solid #4cacff;background-color:#4cacff;color:#fff!important;width:120px;text-align:center;line-height:40px;border-radius:2px;width:130px;height:40px;background:#4cacff;border-radius:4px;font-size:16px;font-family:MicrosoftYaHei;font-weight:400;color:#fff}#attachments_fields{margin-left:-77px;display:-ms-flexbox;display:flex;-ms-flex-direction:column;flex-direction:column}#memoMD.show_content_grey{padding:0}#attachments_fields div.ui-progressbar{width:120px;height:10px;margin:2px 0 -2px 8px;display:inline-block}.ui-progressbar-value.ui-widget-header{border:1px solid #4cacff;background:#4cacff}.publishMemoSection{padding-bottom:0!important}.advertisement{margin-top:10px;height:155px}.advertisement img{width:100%}.returnBtn{font-size:16px;color:#999;float:right;margin-right:50px;position:relative;bottom:12px}", "", 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    --------------------------------- START */\n.educontent {\n\tmargin-bottom: 20px;\t\n}\n\n/* 左侧区域最小高度*/\n#forum_index_list {\n\tmin-height: 400px;\n\tposition: relative;\n}\n\t#forum_index_list .forum_table .forum_table_item {\n\t\tbackground: #fff;\n\t}\n\t.noMemosTip {\n\t\tposition: absolute;\n\t    right: 10px;\n\t    top: 58px;\n\t    z-index: 999;\n\t}\n#forum_list {\n\tbackground: #f9f9f9;\n}\n\t#forum_list .return_btn {\n\t\tline-height: 38px;\n\t    /* margin-right: 15px; */\n\t    font-size: 14px;\n\t    cursor: pointer;\n\t}\n\t#forum_list .return_btn.no_mr {\n\t\tmargin-right: -24px !important;\n\t}\n\tdiv#forum_list>div {\n\t    background: #fff;\n\t}\n.memoContent img {\n\tmax-width: 815px;\n}\n.memoReplies {\n\tposition: relative;\n\tmargin-top: 8px;\n}\n\t.memoReplies .-fit {\n\t\tposition: static;\n\t}\n\t.replies_count {\n\t\tmargin-left: 12px;\n\t}\n\t.replies_count .label {\n\t\tcolor: #666666;\n\t}\n\t.replies_count .count {\n\t\tcolor: #999999;\n\t\tmargin-left: 10px;\n\t}\n\n\t.memoMore {\n\t\tpadding-top: 10px;\n\t\theight: 50px;\n\t    line-height: 50px;\n\t    text-align: center;\n\t    color: rgba(69,155,230,1);\n\t    cursor: pointer;\n\t    position: relative;\n\t}\n\t\t.memoMore .writeCommentBtn{\n\t\t    position: absolute;\n\t\t    right: 0px;\n\t\t    color: #666666;\n\t\t    top: 15px;\n\t\t}\n\t\t.memoMore .writeCommentBtn:hover {\n\t\t\tcolor: #4DACFF;\n\t\t}\n/*使用md編輯器用为子回复时，宽度会变*/\n.panel-comment_item .comment_orig_content {\n\twidth: 705px;\n}\n\n.iconfont.icon-xiazai {\n    font-size: 22px!important;\n    margin-right: 6px;\n}\n/* MemoDetail     --------------------------------- END */\n\n/* PostItem     --------------------------------- START */\n.forum_table_item {\n\tpadding-left: 20px;\n}\n\t/* 置顶 */\n\t.forum_table_item .btn-top {\n\t\tborder-radius: 11px;\n\t    padding: 0px 6px;\n\t    background: #FF4343;\n\n\t}\n\n/* 管理员操作 */\n.edu-position-hide {\n    position: absolute;\n    top: 15px;\n    left: -20px;\n    -webkit-box-shadow: 0px 2px 8px rgba(146, 153, 169, 0.5);\n            box-shadow: 0px 2px 8px rgba(146, 153, 169, 0.5);\n    background: #fff;\n    z-index: 1001;\n    padding: 5px 0;\n    z-index: 999999;\n}\n\t.edu-position-hide li a:hover {\n\t\tbackground: #4CACFF;\n    \tcolor: #fff;\n\t}\n.edu-position-hidebox>a:link{\n\tcolor: #4CACFF;\n}\n\t.edu-position-hidebox:hover .edu-position-hide {\n\t    display: block;\n\t}\n\t.edu-position-hide li a {\n\t    display: inline-block;\n\t    height: 30px;\n\t    width: 100px;\n\t    line-height: 30px;\n\t    text-align: center;\n\t    font-size: 12px!important;\n\t}\n/* PostItem     --------------------------------- END */\n\n\n/* MemoNew     --------------------------------- START */\n\n#attachments_fields div.ui-progressbar { \n\twidth: 120px;\n    height: 10px;\n    margin: 2px 0 -2px 8px;\n    display: inline-block;\n}\n.ui-widget-header {\n\tborder: 1px solid #4CACFF;\n    background: #4CACFF;\n}\n.iconfont.icon-fujian {\n\tcolor: #29BD8B\n}\n\n/* rc-select样式覆写*/\n.ecSelect {\n\twidth: 300px;\n}\n.ecSelect .rc-select-selection {\n\theight: 40px;\n}\t\n\t.ecSelect .rc-select-search--inline .rc-select-search__field {\n\t\tpadding-top: 6px;\n\t}\n\t.ecSelect .rc-select-selection--single .rc-select-selection-selected-value \n\t\t, .ecSelect .rc-select-selection__placeholder {\n    \ttop: 6px;\n\n\t}\n\t.ecSelect .rc-select-arrow {\n\t\ttop: 6px;\n\t}\n.defalutCancelbtn  {\n\tcursor: pointer;\n}\n.defalutSubmitbtnysl{\n\tdisplay: block;border: 1px solid #4CACFF;background-color: #4CACFF;color: #fff!important;width: 120px;text-align: center;line-height: 40px;border-radius: 2px;\n\twidth: 130px;\n\theight: 40px;\n\tbackground: rgba(76,172,255,1);\n\tborder-radius: 4px;\n\tfont-size: 16px;\n\tfont-family: MicrosoftYaHei;\n\tfont-weight: 400;\n\tcolor: rgba(255,255,255,1);\n}\n#attachments_fields {\n\tmargin-left: -77px;\n    display: -ms-flexbox;\n    display: flex;\n    -ms-flex-direction: column;\n        flex-direction: column;\n}\n.uploadBtn {\n\t/* margin-left: 46px; */\n}\n#memoMD.show_content_grey {\n\tpadding: 0;\n}\n.newForm .attachments_fields {\n\t/*margin-left: -39px !important*/\n}\n#attachments_fields div.ui-progressbar { \n\twidth: 120px;\n    height: 10px;\n    margin: 2px 0 -2px 8px;\n    display: inline-block;\n}\n.ui-progressbar-value.ui-widget-header {\n\tborder: 1px solid #4CACFF;\n    background: #4CACFF;\n}\n/* MemoNew     --------------------------------- END */\n\n\n/*RightMyPublish*/\n.publishMemoSection {\n\tpadding-bottom: 0px !important;\n}\n.advertisement {\n\tmargin-top: 10px;\n\theight: 155px;\n}\n.advertisement img{\n\twidth: 100%;\n}\n\n/* MyPublish*/\n.returnBtn {\n\tfont-size:16px;\n\tcolor:rgba(153,153,153,1);\n\tfloat: right;\n    margin-right: 50px;\n    position: relative;\n    bottom: 12px;\n}"],"sourceRoot":""}]);

// exports


/***/ }),

/***/ 1762:
/***/ (function(module, exports, __webpack_require__) {

// style-loader: Adds some css to the DOM by adding a <style> tag

// load the styles
var content = __webpack_require__(1781);
if(typeof content === 'string') content = [[module.i, content, '']];
// Prepare cssTransformation
var transform;

var options = {"hmr":false}
options.transform = transform
// add the styles to the DOM
var update = __webpack_require__(318)(content, options);
if(content.locals) module.exports = content.locals;


/***/ }),

/***/ 1781:
/***/ (function(module, exports, __webpack_require__) {

exports = module.exports = __webpack_require__(317)(true);
// imports


// module
exports.push([module.i, ".course-message .commentsbtn{margin-top:10px}.course-message .memoReplies{margin-top:0!important}.course-message .panel-comment_item .comment_orig_content{width:1040px}.course-message .panel-comment_item .editor__resize{left:47%}.course-message .childrenCommentsView .comment_item_cont:first-child{border-top:1px solid #e3e3e3;margin-top:8px}.course-message .comment_item_cont:last-child{border-bottom:none}.course-message .appraise.comment_item_cont:last-child{padding-bottom:0}.course-message .memoMore{background:transparent!important}.course-message .memoMore .writeCommentBtn{right:35px;top:2px}.panel-comment_item .comment_content{margin-top:4px}.commentstypetop{position:relative}.commentstypebutton{position:absolute;right:0}", "", {"version":3,"sources":["/Users/hs/forgeplus-react/src/modules/courses/common/courseMessage.css"],"names":[],"mappings":"AAIA,6BACE,eAAiB,CAClB,AAED,6BACE,sBAA2B,CAC5B,AAID,0DAEE,YAAc,CACf,AAeD,oDACE,QAAU,CACX,AACD,qEACE,6BAA8B,AAC9B,cAAgB,CACjB,AACD,8CACE,kBAAoB,CACrB,AACD,uDAEE,gBAAoB,CACrB,AAED,0BACE,gCAAmC,CAEpC,AACC,2CACE,WAAY,AACZ,OAAS,CACV,AAEH,qCACE,cAAgB,CACjB,AAED,iBACE,iBAAmB,CACpB,AACD,oBACE,kBAAmB,AACnB,OAAW,CACZ","file":"courseMessage.css","sourcesContent":[".course-message .commentInput {\r\n  /* padding-bottom: 60px !important; */\r\n}\r\n\r\n.course-message .commentsbtn {\r\n  margin-top: 10px;\r\n}\r\n\r\n.course-message .memoReplies {\r\n  margin-top: 0px !important;\r\n}\r\n\r\n/* 评论 */\r\n/* 改宽度 */\r\n.course-message .panel-comment_item .comment_orig_content {\r\n  /* width: 1024px; */\r\n  width: 1040px;\r\n}\r\n/* 子回复按钮 */\r\n.course-message .reply_to_message a.commentsbtn.task-btn-blue {\r\n  /* margin-right: 50px; */\r\n}\r\n/* 改边距 */\r\n/* .course-message .commentsDelegateParent {\r\n  padding-left: 100px;\r\n} */\r\n\r\n#forum_list .return_btn.no_mr {\r\n  /* margin-right: 15px */\r\n}\r\n\r\n/* md编辑器拖拽调整 */\r\n.course-message .panel-comment_item .editor__resize {\r\n  left: 47%;\r\n}\r\n.course-message .childrenCommentsView .comment_item_cont:first-child {\r\n  border-top: 1px solid #e3e3e3;\r\n  margin-top: 8px;\r\n}\r\n.course-message .comment_item_cont:last-child {\r\n  border-bottom: none;\r\n}\r\n.course-message .appraise.comment_item_cont:last-child {\r\n  /* 作品评阅需要 */\r\n  padding-bottom: 0px;\r\n}\r\n\r\n.course-message .memoMore {\r\n  background: transparent !important;\r\n  /* margin-top: 20px; */\r\n}\r\n  .course-message .memoMore .writeCommentBtn {\r\n    right: 35px;\r\n    top: 2px;\r\n  }\r\n\r\n.panel-comment_item .comment_content {\r\n  margin-top: 4px;\r\n}\r\n\r\n.commentstypetop{\r\n  position: relative;\r\n}\r\n.commentstypebutton{\r\n  position: absolute;\r\n  right: 0px;\r\n}"],"sourceRoot":""}]);

// exports


/***/ }),

/***/ 1888:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_antd_lib_modal_style_css__ = __webpack_require__(28);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_antd_lib_modal_style_css___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_0_antd_lib_modal_style_css__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_antd_lib_modal__ = __webpack_require__(29);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_antd_lib_modal___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_1_antd_lib_modal__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2_antd_lib_input_number_style_css__ = __webpack_require__(1178);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2_antd_lib_input_number_style_css___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_2_antd_lib_input_number_style_css__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3_antd_lib_input_number__ = __webpack_require__(1179);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3_antd_lib_input_number___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_3_antd_lib_input_number__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_4_react__ = __webpack_require__(0);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_4_react___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_4_react__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_5_educoder__ = __webpack_require__(5);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_6__Newshixunmodel_css__ = __webpack_require__(1557);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_6__Newshixunmodel_css___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_6__Newshixunmodel_css__);
var _createClass=function(){function defineProperties(target,props){for(var i=0;i<props.length;i++){var descriptor=props[i];descriptor.enumerable=descriptor.enumerable||false;descriptor.configurable=true;if("value"in descriptor)descriptor.writable=true;Object.defineProperty(target,descriptor.key,descriptor);}}return function(Constructor,protoProps,staticProps){if(protoProps)defineProperties(Constructor.prototype,protoProps);if(staticProps)defineProperties(Constructor,staticProps);return Constructor;};}();function _classCallCheck(instance,Constructor){if(!(instance instanceof Constructor)){throw new TypeError("Cannot call a class as a function");}}function _possibleConstructorReturn(self,call){if(!self){throw new ReferenceError("this hasn't been initialised - super() hasn't been called");}return call&&(typeof call==="object"||typeof call==="function")?call:self;}function _inherits(subClass,superClass){if(typeof superClass!=="function"&&superClass!==null){throw new TypeError("Super expression must either be null or a function, not "+typeof superClass);}subClass.prototype=Object.create(superClass&&superClass.prototype,{constructor:{value:subClass,enumerable:false,writable:true,configurable:true}});if(superClass)Object.setPrototypeOf?Object.setPrototypeOf(subClass,superClass):subClass.__proto__=superClass;}//调分
var ModulationModal=function(_Component){_inherits(ModulationModal,_Component);function ModulationModal(props){_classCallCheck(this,ModulationModal);var _this=_possibleConstructorReturn(this,(ModulationModal.__proto__||Object.getPrototypeOf(ModulationModal)).call(this,props));_this.Saves=function(){console.log("Saves=()");var _this$state=_this.state,textareaval=_this$state.textareaval,Inputsval=_this$state.Inputsval;// if(textareaval===""||textareaval===undefined){
//   this.setState({
//     textareavaltype:true
//   })
//   return
// }
_this.setState({textareavaltype:false});if(Inputsval===undefined||Inputsval===""){_this.setState({Inputsval:"",Inputsvaltype:true,Inputsvaltest:"请填写分数"});return;}if(_this.state.Inputsvaltype===true){return;}if(Inputsval===undefined||Inputsval===null||Inputsval===""){_this.setState({borredszf:"ml10  color-grey-9 bor-reds ",Inputsval:"",Inputsvaltype:true,Inputsvaltest:"成绩不能为空"});return;}var re=/^[0-9]+.?[0-9]*$/;//判断字符串是否为数字 //判断正整数 /^[1-9]+[0-9]*]*$/
var nubmer=Inputsval;if(!re.test(nubmer)){_this.setState({borredszf:"ml10  color-grey-9 bor-reds ",Inputsval:Inputsval,Inputsvaltype:true,Inputsvaltest:"请输入0-100的分数"});return;}if(0>parseFloat(Inputsval)){_this.setState({borredszf:"ml10  color-grey-9 bor-reds ",Inputsval:Inputsval,Inputsvaltype:true,Inputsvaltest:"成绩不能小于零"});return;}else if(parseFloat(Inputsval)>100){_this.setState({borredszf:"ml10  color-grey-9 bor-reds ",Inputsval:Inputsval,Inputsvaltype:true,Inputsvaltest:"成绩不能大于100"});return;}_this.setState({Inputsvaltype:false,Inputsvaltest:""});console.log(Inputsval);_this.props.Saves(textareaval,Inputsval);};_this.settextarea=function(e){_this.setState({textareaval:e.target.value});};_this.setInputs=function(e){console.log("setInputs");console.log(e);_this.setState({Inputsval:e,Inputsvaltype:false});};_this.state={group_ids:[],fileList:[],textareaval:undefined,Inputsval:undefined};return _this;}_createClass(ModulationModal,[{key:"render",value:function render(){var _this2=this;var _state=this.state,textareaval=_state.textareaval,Inputsval=_state.Inputsval,textareavaltype=_state.textareavaltype,Inputsvaltype=_state.Inputsvaltype,Inputsvaltest=_state.Inputsvaltest;return __WEBPACK_IMPORTED_MODULE_4_react___default.a.createElement("div",null,__WEBPACK_IMPORTED_MODULE_4_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_1_antd_lib_modal___default.a,{keyboard:false,className:"HomeworkModal",title:this.props.modalname||'调分',visible:this.props.visible,closable:false,footer:null,destroyOnClose:true},__WEBPACK_IMPORTED_MODULE_4_react___default.a.createElement("div",{className:"clearfix",style:{display:"-webkit-flex",flexDirection:"column",alignItems:"center"}},__WEBPACK_IMPORTED_MODULE_4_react___default.a.createElement("div",{style:{display:"flex",flexDirection:"initial"}},__WEBPACK_IMPORTED_MODULE_4_react___default.a.createElement("p",{className:" mt3 font-14 ",style:{color:"#666666"}},"\u8BE5\u5B66\u751F\u7684\u6700\u7EC8\u6210\u7EE9\u5C06\u4E0D\u4F1A\u6309\u7167\u8BC4\u5206\u89C4\u5219\u8FDB\u884C\u8BA1\u7B97")),__WEBPACK_IMPORTED_MODULE_4_react___default.a.createElement("div",{style:{marginTop:" 27px",display:"flex",flexDirection:"initial",width:"100%"}},__WEBPACK_IMPORTED_MODULE_4_react___default.a.createElement("span",{style:{textAlign:"center",lineHeight:"40px",marginLeft:"16px"}},__WEBPACK_IMPORTED_MODULE_4_react___default.a.createElement("span",{style:{textAlign:"center",lineHeight:" 40px",color:" #f5222d"}},"*"),"\u6210\u7EE9\uFF1A"),__WEBPACK_IMPORTED_MODULE_4_react___default.a.createElement("style",null,"\n\t\t\t\t\t\t\t\t\t.myinputnumbers .ant-input-number-input{\n\t\t\t\t\t\t\t\t\tline-height: 40px;\n                   height: 35px;\n\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t"),Inputsvaltype===true?__WEBPACK_IMPORTED_MODULE_4_react___default.a.createElement("style",null,"\n\t\t\t\t\t\t\t\t\t\t.ant-input:hover {\n\t\t\t\t\t\t\t\t\t\t\t\tborder: 1px solid #DD1717!important;\n\t\t\t\t\t\t\t\t    }\n\t\t\t\t\t\t\t\t    .ant-input:focus {\n\t\t\t\t\t\t\t\t    border: 1px solid #DD1717!important;\n\t\t\t\t\t\t\t\t    }\n\t\t\t\t\t\t\t\t    }\n\t\t\t\t\t\t\t\t\t\t"):""," ",__WEBPACK_IMPORTED_MODULE_4_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_3_antd_lib_input_number___default.a,{className:Inputsvaltype===true?"borerinput myinputnumbers  bor-reds":"myinputnumbers",style:{width:"120px",height:"40px"},placeholder:"\u8BF7\u586B\u5199\u5206\u6570",onChange:function onChange(e){return _this2.setInputs(e);},value:Inputsval===undefined||Inputsval===null?"":Inputsval}),__WEBPACK_IMPORTED_MODULE_4_react___default.a.createElement("span",{style:{textAlign:"center",lineHeight:" 40px",marginLeft:"10px"}},"\u5206")),Inputsvaltype===true?__WEBPACK_IMPORTED_MODULE_4_react___default.a.createElement("p",{style:{color:"#DD1717",width:"77%",marginLeft:"1px",marginTop:"10px"}},Inputsvaltest):"",__WEBPACK_IMPORTED_MODULE_4_react___default.a.createElement("div",{style:{display:"flex",flexDirection:"initial",marginTop:"10px;"}},__WEBPACK_IMPORTED_MODULE_4_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_5_educoder__["z" /* WordNumberTextarea */],{style:{width:"100%"},placeholder:"请填写您对作品调分的原因（选填）",onInput:function onInput(e){return _this2.settextarea(e);},value:textareaval,maxlength:100})),__WEBPACK_IMPORTED_MODULE_4_react___default.a.createElement("div",{style:{marginTop:"15px",width:"82%",marginLeft:"70px",marginBottom:"29px",display:"flex",flexDirection:"row-reverse"}},__WEBPACK_IMPORTED_MODULE_4_react___default.a.createElement("a",{className:"task-btn task-btn-orange ",style:{width:"72px",borderRadius:"5px"},onClick:this.Saves},this.props.Savesname||'确认'),__WEBPACK_IMPORTED_MODULE_4_react___default.a.createElement("a",{className:"task-btn color-white mr30",style:{width:"72px",borderRadius:"5px"},onClick:this.props.Cancel},this.props.Cancelname||'取消')))));}}]);return ModulationModal;}(__WEBPACK_IMPORTED_MODULE_4_react__["Component"]);/* harmony default export */ __webpack_exports__["a"] = (ModulationModal);// <div className="task-popup-content">
//   <p className="task-popup-text-center font-16 mb20">
//
//     <span className={"color-dark-21"}>该学生的最终成绩将不会按照评分规则进行计算</span>
//
//   </p>
//
//
//   <div className="clearfix">
//     {/*<textarea*/}
//     {/*className="winput-100-150"*/}
//     {/*placeholder="请填写您对作品调分的原因"*/}
//     {/*value={textareaval}*/}
//     {/*onInput={this.settextarea}*/}
//     {/*></textarea>*/}
//
//     <WordNumberTextarea
//       placeholder={"请填写您对作品调分的原因"}
//       onInput={(e)=>this.settextarea(e)}
//       value={textareaval}
//       maxlength={100}
//     />
//
//     {/*<li style={{height:"20px",lineHeight:"20px"}}><span className={textareavaltype===true?"color-red":"none"}>原因不能为空</span></li>*/}
//     <div style={{height:"20px",lineHeight:"20px"}}></div>
//   </div>
//
//   <style>
//     {
//
//       `
// 									.pdl10{
// 									 padding-left:10px;
// 									}
// 									`
//     }
//   </style>
//
//   <li className={"pdl10"}>
//
//   </li>
//   <li style={{height:"20px",lineHeight:"20px"}}><span className={Inputsvaltype===true?"color-red":"none"}>分数不能为空</span></li>
//   <div className="clearfix edu-txt-center">
//     <a  className="task-btn color-white mr30" onClick={this.props.Cancel}>{this.props.Cancelname || '取消'}</a>
//     <a className="task-btn task-btn-orange" onClick={this.Saves}>{this.props.Savesname || '保存'}</a>
{/*  </div>*/}{/*</div>*/}

/***/ }),

/***/ 1889:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_antd_lib_radio_style_css__ = __webpack_require__(182);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_antd_lib_radio_style_css___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_0_antd_lib_radio_style_css__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_antd_lib_radio__ = __webpack_require__(181);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_antd_lib_radio___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_1_antd_lib_radio__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2_antd_lib_input_style_css__ = __webpack_require__(60);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2_antd_lib_input_style_css___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_2_antd_lib_input_style_css__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3_antd_lib_input__ = __webpack_require__(61);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3_antd_lib_input___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_3_antd_lib_input__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_4_antd_lib_modal_style_css__ = __webpack_require__(28);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_4_antd_lib_modal_style_css___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_4_antd_lib_modal_style_css__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_5_antd_lib_modal__ = __webpack_require__(29);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_5_antd_lib_modal___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_5_antd_lib_modal__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_6_antd_lib_checkbox_style_css__ = __webpack_require__(323);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_6_antd_lib_checkbox_style_css___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_6_antd_lib_checkbox_style_css__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_7_antd_lib_checkbox__ = __webpack_require__(321);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_7_antd_lib_checkbox___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_7_antd_lib_checkbox__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_8_antd_lib_select_style_css__ = __webpack_require__(322);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_8_antd_lib_select_style_css___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_8_antd_lib_select_style_css__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_9_antd_lib_select__ = __webpack_require__(320);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_9_antd_lib_select___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_9_antd_lib_select__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_10_react__ = __webpack_require__(0);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_10_react___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_10_react__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_11_react_router_dom__ = __webpack_require__(47);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_12_antd_lib_date_picker_locale_zh_CN__ = __webpack_require__(187);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_12_antd_lib_date_picker_locale_zh_CN___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_12_antd_lib_date_picker_locale_zh_CN__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_13_educoder__ = __webpack_require__(5);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_14_axios__ = __webpack_require__(8);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_14_axios___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_14_axios__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_15__modals_Modals__ = __webpack_require__(180);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_16__coursesPublic_CoursesListType__ = __webpack_require__(1173);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_17__coursesPublic_AccessoryModal__ = __webpack_require__(1531);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_18__css_Courses_css__ = __webpack_require__(332);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_18__css_Courses_css___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_18__css_Courses_css__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_19__common_CBreadcrumb__ = __webpack_require__(354);
var _createClass=function(){function defineProperties(target,props){for(var i=0;i<props.length;i++){var descriptor=props[i];descriptor.enumerable=descriptor.enumerable||false;descriptor.configurable=true;if("value"in descriptor)descriptor.writable=true;Object.defineProperty(target,descriptor.key,descriptor);}}return function(Constructor,protoProps,staticProps){if(protoProps)defineProperties(Constructor.prototype,protoProps);if(staticProps)defineProperties(Constructor,staticProps);return Constructor;};}();function _classCallCheck(instance,Constructor){if(!(instance instanceof Constructor)){throw new TypeError("Cannot call a class as a function");}}function _possibleConstructorReturn(self,call){if(!self){throw new ReferenceError("this hasn't been initialised - super() hasn't been called");}return call&&(typeof call==="object"||typeof call==="function")?call:self;}function _inherits(subClass,superClass){if(typeof superClass!=="function"&&superClass!==null){throw new TypeError("Super expression must either be null or a function, not "+typeof superClass);}subClass.prototype=Object.create(superClass&&superClass.prototype,{constructor:{value:subClass,enumerable:false,writable:true,configurable:true}});if(superClass)Object.setPrototypeOf?Object.setPrototypeOf(subClass,superClass):subClass.__proto__=superClass;}var Option=__WEBPACK_IMPORTED_MODULE_9_antd_lib_select___default.a.Option;var CheckboxGroup=__WEBPACK_IMPORTED_MODULE_7_antd_lib_checkbox___default.a.Group;var confirm=__WEBPACK_IMPORTED_MODULE_5_antd_lib_modal___default.a.confirm;var GraduationTasksnewtype=true;var $=window.$;var Search=__WEBPACK_IMPORTED_MODULE_3_antd_lib_input___default.a.Search;var RadioGroup=__WEBPACK_IMPORTED_MODULE_1_antd_lib_radio___default.a.Group;var WorkDetailPageHeader=function(_Component){_inherits(WorkDetailPageHeader,_Component);function WorkDetailPageHeader(props){_classCallCheck(this,WorkDetailPageHeader);var _this=_possibleConstructorReturn(this,(WorkDetailPageHeader.__proto__||Object.getPrototypeOf(WorkDetailPageHeader)).call(this,props));_this.goback=function(){var workId=_this.props.match.params.workId;if(window.location.pathname.indexOf('appraise')==-1){var category_id=_this.props.category.category_id;_this.props.toListPage(_this.props.match.params,category_id);}else{_this.props.toWorkListPage(_this.props.match.params,workId);// this.props.match.params.category_id
}// this.props.history.goBack()
};_this.Cancelvisible=function(){_this.setState({accessoryVisible:false});};_this.addAccessory=function(){_this.setState({accessoryVisible:true});};_this.setupdate=function(){_this.props.getReviseAttachments&&_this.props.getReviseAttachments();};_this.state={};return _this;}_createClass(WorkDetailPageHeader,[{key:"componentDidMount",value:function componentDidMount(){}// 补交附件
},{key:"render",value:function render(){var dateFormat='YYYY-MM-DD HH:mm';var _props=this.props,course_name=_props.course_name,homework_name=_props.homework_name,search=_props.search,page=_props.page,loadingstate=_props.loadingstate,homework_status=_props.homework_status,description=_props.description,noTab=_props.noTab,view_answer=_props.view_answer,author_name=_props.author_name,category=_props.category,work_id=_props.work_id,current_user=_props.current_user;var courseId=this.props.match.params.coursesId;var category_id=category&&category.category_id;var category_name=category&&category.category_name;var workId=this.props.match.params.workId;var studentWorkId=this.props.match.params.studentWorkId;var isGroup=this.props.isGroup();var moduleName=!isGroup?"普通作业":"分组作业";var moduleEngName=this.props.getModuleName();var childModuleName=this.props.moduleName;return __WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_10_react___default.a.Fragment,null,__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement("div",null,__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement("div",{className:"newMain clearfix worklist1 workDetailPageHeader"},__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement("div",{className:"educontent mt20"},__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement("style",null,"\n                .memoContent {\n                  background: #fff;\n                }\n                .workDetailPageHeader .summaryname {\n                  line-height:28px\n                }\n              "),__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_19__common_CBreadcrumb__["a" /* default */],{items:[{to:current_user&&current_user.first_category_url,name:course_name},{to:"/courses/"+courseId+"/"+moduleEngName+"/"+category_id,name:category_name},window.location.pathname.indexOf('appraise')==-1?{}:{to:"/courses/"+courseId+"/"+moduleEngName+"/"+workId+"/list",name:'作业详情'},// 1.	与上一条联动，当匿评他人作品时，TA人作品的作者真实姓名切换为“匿名”
window.location.pathname.indexOf('appraise')==-1?{name:'作业详情'}:{name:author_name}]}),__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement("div",{className:"clearfix mt20 mb20"},__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement("span",{className:" fl color-black summaryname"},homework_name),__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_16__coursesPublic_CoursesListType__["a" /* default */],{typelist:homework_status,typesylename:"mt3"}),category&&__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement("a",{className:"color-grey-6 fr font-16 ml30 mr30 lineh-25",onClick:this.goback},"\u8FD4\u56DE"),this.props.update_atta&&__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_10_react___default.a.Fragment,null,this.state.accessoryVisible===true?__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_17__coursesPublic_AccessoryModal__["a" /* default */],Object.assign({},this.props,{modalname:"补交附件",visible:this.state.accessoryVisible,Cancelname:"取消",Savesname:"确认",Cancel:this.Cancelvisible,setupdate:this.setupdate,seeworks:undefined,reviseAttachmentUrl:"/student_works/"+(work_id||studentWorkId)+"/revise_attachment.json"})):"",__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement("a",{className:"fr color-blue font-16 ",href:"javascript:void(0)",onClick:this.addAccessory,style:{'marginTop':'-4px'}},"\u8865\u4EA4\u9644\u4EF6"))),noTab!==true&&__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement("div",{className:"stud-class-set bor-bottom-greyE"},__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement("div",{className:"mt10 clearfix edu-back-white poll_list pl5"},__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_11_react_router_dom__["b" /* Link */],{className:(childModuleName=='作品列表'?'active':'')+" ",to:"/courses/"+courseId+"/"+moduleEngName+"/"+workId+"/list"},"\u4F5C\u54C1\u5217\u8868"),__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_11_react_router_dom__["b" /* Link */],{className:(childModuleName=='作业描述'?'active':'')+" ",to:"/courses/"+courseId+"/"+moduleEngName+"/"+workId+"/question"},"\u4F5C\u4E1A\u63CF\u8FF0"),view_answer==true&&__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_11_react_router_dom__["b" /* Link */],{className:(childModuleName=='参考答案'?'active':'')+" ",to:"/courses/"+courseId+"/"+moduleEngName+"/"+workId+"/answer"},"\u53C2\u8003\u7B54\u6848"),__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_11_react_router_dom__["b" /* Link */],{className:(childModuleName=='设置'?'active':'')+" ",style:{paddingLeft:this.props.isAdmin()?'38px':'20px'},to:"/courses/"+courseId+"/"+moduleEngName+"/"+workId+"/setting"},this.props.isAdmin()?"设置":"得分规则"),this.props.tabRightComponents)),this.props.children))));}}]);return WorkDetailPageHeader;}(__WEBPACK_IMPORTED_MODULE_10_react__["Component"]);/* harmony default export */ __webpack_exports__["a"] = (WorkDetailPageHeader);

/***/ }),

/***/ 2092:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony export (immutable) */ __webpack_exports__["a"] = LeaderIcon;
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_react__ = __webpack_require__(0);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_react___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_0_react__);
function LeaderIcon(){var props=arguments.length>0&&arguments[0]!==undefined?arguments[0]:{};var icon=null;var className=props.className,style=props.style;var _className='font-8 blueFull Actionbtn '+className;if(props.small){icon=__WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement('div',{className:_className,style:{height:'14px','line-height':'14px',// width: '24px',
transform:'scale(0.833)',padding:'0px 5px','margin-top':'-2px','margin-left':'2px','vertical-align':'middle'}},'\u7EC4\u957F');}else{icon=__WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement('div',{className:_className,style:{height:'16px','line-height':'16px',transform:'scale(0.833)'}},'\u7EC4\u957F');}return icon;}

/***/ }),

/***/ 2665:
/***/ (function(module, exports, __webpack_require__) {

// style-loader: Adds some css to the DOM by adding a <style> tag

// load the styles
var content = __webpack_require__(3215);
if(typeof content === 'string') content = [[module.i, content, '']];
// Prepare cssTransformation
var transform;

var options = {"hmr":false}
options.transform = transform
// add the styles to the DOM
var update = __webpack_require__(318)(content, options);
if(content.locals) module.exports = content.locals;


/***/ }),

/***/ 3211:
/***/ (function(module, exports, __webpack_require__) {

// style-loader: Adds some css to the DOM by adding a <style> tag

// load the styles
var content = __webpack_require__(3480);
if(typeof content === 'string') content = [[module.i, content, '']];
// Prepare cssTransformation
var transform;

var options = {"hmr":false}
options.transform = transform
// add the styles to the DOM
var update = __webpack_require__(318)(content, options);
if(content.locals) module.exports = content.locals;


/***/ }),

/***/ 3212:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_antd_lib_input_number_style_css__ = __webpack_require__(1178);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_antd_lib_input_number_style_css___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_0_antd_lib_input_number_style_css__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_antd_lib_input_number__ = __webpack_require__(1179);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_antd_lib_input_number___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_1_antd_lib_input_number__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2_antd_lib_upload_style_css__ = __webpack_require__(1138);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2_antd_lib_upload_style_css___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_2_antd_lib_upload_style_css__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3_antd_lib_upload__ = __webpack_require__(1139);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3_antd_lib_upload___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_3_antd_lib_upload__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_4_antd_lib_button_style_css__ = __webpack_require__(88);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_4_antd_lib_button_style_css___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_4_antd_lib_button_style_css__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_5_antd_lib_button__ = __webpack_require__(74);
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/* harmony import */ var __WEBPACK_IMPORTED_MODULE_10_react__ = __webpack_require__(0);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_10_react___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_10_react__);
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/* harmony import */ var __WEBPACK_IMPORTED_MODULE_13__tpm_challengesnew_TPMMDEditor__ = __webpack_require__(339);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_14_educoder__ = __webpack_require__(5);
var _createClass=function(){function defineProperties(target,props){for(var i=0;i<props.length;i++){var descriptor=props[i];descriptor.enumerable=descriptor.enumerable||false;descriptor.configurable=true;if("value"in descriptor)descriptor.writable=true;Object.defineProperty(target,descriptor.key,descriptor);}}return function(Constructor,protoProps,staticProps){if(protoProps)defineProperties(Constructor.prototype,protoProps);if(staticProps)defineProperties(Constructor,staticProps);return Constructor;};}();function _defineProperty(obj,key,value){if(key in obj){Object.defineProperty(obj,key,{value:value,enumerable:true,configurable:true,writable:true});}else{obj[key]=value;}return obj;}function _classCallCheck(instance,Constructor){if(!(instance instanceof Constructor)){throw new TypeError("Cannot call a class as a function");}}function _possibleConstructorReturn(self,call){if(!self){throw new ReferenceError("this hasn't been initialised - super() hasn't been called");}return call&&(typeof call==="object"||typeof call==="function")?call:self;}function _inherits(subClass,superClass){if(typeof superClass!=="function"&&superClass!==null){throw new TypeError("Super expression must either be null or a function, not "+typeof superClass);}subClass.prototype=Object.create(superClass&&superClass.prototype,{constructor:{value:subClass,enumerable:false,writable:true,configurable:true}});if(superClass)Object.setPrototypeOf?Object.setPrototypeOf(subClass,superClass):subClass.__proto__=superClass;}var $=window.$;/*

*/var GraduationTasksappraiseMainEditor=function(_Component){_inherits(GraduationTasksappraiseMainEditor,_Component);function GraduationTasksappraiseMainEditor(props){_classCallCheck(this,GraduationTasksappraiseMainEditor);var _this=_possibleConstructorReturn(this,(GraduationTasksappraiseMainEditor.__proto__||Object.getPrototypeOf(GraduationTasksappraiseMainEditor)).call(this,props));_this.onSubmit=function(){var _this$state=_this.state,score=_this$state.score,same_score=_this$state.same_score;var category_id=_this.props.match.params.category_id;var url="/graduation_works/"+category_id+"/add_score.json";var attachment_ids=_this.state.fileList.map(function(item){return item.response?item.response.id:item.id;});var comment=_this.mdRef.current.getValue();if((!comment||comment.trim()=="")&&!score&&_this.props.isAdmin()===true){_this.setState({errorMessage:'分数和评语不能同时为空'});// this.props.showNotification('请先输入评阅说明')
return;}if(!score&&_this.props.isAdmin()===false){_this.setState({errorMessage:'分数不能为空',errorMessagetype:true});// this.props.showNotification('请先输入评阅说明')
return;}if(comment.length>2000){_this.setState({errorMessage:'不能超过2000个字符'});// this.props.showNotification('评阅说明文本长度不能超过2000')
return;}_this.setState({errorMessage:''});// if (score == 0 ||score<1|| score === undefined || score === null || score === "" ) {
//   this.setState( {numberErrorMessage : '分数不能为空' })
//   // this.props.showNotification('请先输入分数')
//   return;
// }
_this.setState({numberErrorMessage:''});var params={score:score,comment:comment,attachment_ids:attachment_ids,same_score:same_score};if(_this.props.onReply){_this.props.onReply(params);}else{__WEBPACK_IMPORTED_MODULE_12_axios___default.a.post(url,params).then(function(response){if(response.data.status==0){_this.clearInputs();_this.props.addSuccess();}}).catch(function(error){console.log(error);});}};_this.clearInputs=function(){_this.setState({score:undefined,same_score:false,fileList:[]});_this.mdRef.current.setValue('');};_this.onCancel=function(){_this.clearInputs();};_this.handleUploadChange=function(info){if(info.file.status==='uploading'||info.file.status==='done'||info.file.status==='removed'){var fileList=info.fileList;_this.setState({fileList:fileList});}};_this.onAttachmentRemove=function(file,stateName){if(!file.percent||file.percent==100){_this.props.confirm({content:'确定要删除这个附件吗?',okText:'确定',cancelText:'取消',// content: 'Some descriptions',
onOk:function onOk(){_this.deleteAttachment(file,stateName);},onCancel:function onCancel(){console.log('Cancel');}});return false;}};_this.deleteAttachment=function(file,stateName){// 初次上传不能直接取uid
var url="/attachments/"+(file.response?file.response.id:file.uid)+".json";__WEBPACK_IMPORTED_MODULE_12_axios___default.a.delete(url,{}).then(function(response){if(response.data){var status=response.data.status;if(status==0){console.log('--- success');_this.setState(function(state){var index=state[stateName].indexOf(file);var newFileList=state[stateName].slice();newFileList.splice(index,1);return _defineProperty({},stateName,newFileList);});}}}).catch(function(error){console.log(error);});};_this.onScoreChange=function(val){if(val){_this.setState({errorMessage:'',errorMessagetype:false});}if(val>100){_this.props.showNotification('不能大于100');_this.setState({score:100});return;}if(val<0){_this.props.showNotification('不能小于0');_this.setState({score:0});return;}if(val&&val.indexOf&&val.indexOf('-')!=-1){_this.setState({score:0});window.event.preventDefault();return;}_this.setState({score:val});};_this.same_score_change=function(e){_this.setState({same_score:e.target.checked});//!this.state.same_score
};_this.mdRef=__WEBPACK_IMPORTED_MODULE_10_react___default.a.createRef();_this.state={fileList:[],score:undefined,same_score:false,errorMessage:'',numberErrorMessage:'',errorMessagetype:false};return _this;}_createClass(GraduationTasksappraiseMainEditor,[{key:"componentDidMount",value:function componentDidMount(){}},{key:"render",value:function render(){var _this2=this;var _state=this.state,total_count=_state.total_count,comments=_state.comments,errorMessagetype=_state.errorMessagetype,fileList=_state.fileList,score=_state.score,same_score=_state.same_score,errorMessage=_state.errorMessage,numberErrorMessage=_state.numberErrorMessage;var _props=this.props,current_user=_props.current_user,memo=_props.memo,showSameScore=_props.showSameScore,placeholder=_props.placeholder;var isAdmin=this.props.isAdmin();var commentUploadProp={width:600,fileList:fileList,multiple:true,// https://github.com/ant-design/ant-design/issues/15505
// showUploadList={false}，然后外部拿到 fileList 数组自行渲染列表。
// showUploadList: false,
action:""+Object(__WEBPACK_IMPORTED_MODULE_14_educoder__["R" /* getUploadActionUrl */])(),onChange:this.handleUploadChange,onRemove:function onRemove(file){return _this2.onAttachmentRemove(file,'fileList');},beforeUpload:function beforeUpload(file){console.log('beforeUpload',file.name);var isLt150M=file.size/1024/1024<150;if(!isLt150M){_this2.props.showNotification('文件大小必须小于150MB!');}return isLt150M;}};return __WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_10_react___default.a.Fragment,null,__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement("div",{className:"mainEditor color-grey-6"},__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement("style",null,"\n          .editorInputError .editormd {\n            border: 1px solid red;\n          }\n          .numberInputError.ant-input-number {\n            border: 1px solid red;\n          } \n          .upload_mainEditor .ant-upload-list-item {\n            margin-bottom: 8px;\n          }\n          .newuploads{\n            margin-top: -5px;\n            display: block;\n            margin-bottom: 8px;\n          }\n          .mainEditor {\n            padding: 0 10px;\n            padding-bottom: 8px;\n          }\n          .mainEditorTitle {\n            margin-bottom: 6px;\n          }\n        "),this.props.title&&__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement("span",{className:"mainEditorTitle color-grey-6"},this.props.title),__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_13__tpm_challengesnew_TPMMDEditor__["a" /* default */],{ref:this.mdRef,mdID:'appraiseEditor',placeholder:placeholder||"请在此输入对本作品的评语，最大限制2000个字符",watch:false,height:160,className:errorMessage&&errorMessagetype!=true?'editorInputError':'',imageExpand:true}),showSameScore==true&&__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement("div",null,__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_9_antd_lib_checkbox___default.a,{checked:same_score,onChange:this.same_score_change},"\u6574\u7EC4\u540C\u8BC4"),__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement("span",{className:"font-14 color-grey-9"},"(\u9009\u4E2D\uFF0C\u5219\u672C\u6B21\u8BC4\u9605\u5BF9\u8C61\u6307\u5C0F\u7EC4\u5168\u90E8\u6210\u5458\uFF0C\u5426\u5219\u4EC5\u8BC4\u9605\u6B64\u6210\u54581\u4EBA )")),__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_3_antd_lib_upload___default.a,Object.assign({},commentUploadProp,{className:"upload_mainEditor upload_1 newuploads"}),__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_5_antd_lib_button___default.a,{className:"uploadBtn"},__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_7_antd_lib_icon___default.a,{type:"upload"})," \u4E0A\u4F20\u9644\u4EF6"),"(\u5355\u4E2A\u6587\u4EF6150M\u4EE5\u5185)"),__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement("div",{style:{height:'36px'}},__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement("div",{style:{float:'left'}},__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_1_antd_lib_input_number___default.a,{placeholder:"\u8BF7\u586B\u5199\u5206\u6570",value:score,onChange:this.onScoreChange,className:numberErrorMessage?'numberInputError':'',style:{width:"120px",marginRight:'6px'},min:0,max:100,precision:1,size:"large"}),"\u5206"),(errorMessage||numberErrorMessage)&&__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement("span",{className:"fl",style:{color:'red',marginTop:'6px',marginLeft:'10px'}},errorMessage||numberErrorMessage),__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement("a",{className:"task-btn task-btn-orange fr mt4",style:{height:'30px',width:'100px'},onClick:this.onSubmit},"\u63D0\u4EA4"),__WEBPACK_IMPORTED_MODULE_10_react___default.a.createElement("a",{onClick:this.onCancel,className:"defalutCancelbtn fr mt4",style:{height:'30px',width:'100px',fontSize:'14px',lineHeight:'30px',marginRight:'20px'}},"\u6E05\u7A7A"))));}}]);return GraduationTasksappraiseMainEditor;}(__WEBPACK_IMPORTED_MODULE_10_react__["Component"]);/* harmony default export */ __webpack_exports__["a"] = (GraduationTasksappraiseMainEditor);

/***/ }),

/***/ 3213:
/***/ (function(module, exports, __webpack_require__) {

var __WEBPACK_AMD_DEFINE_RESULT__;;/*! showdown v 1.9.1 - 02-11-2019 */
(function(){
/**
 * Created by Tivie on 13-07-2015.
 */

function getDefaultOpts (simple) {
  'use strict';

  var defaultOptions = {
    omitExtraWLInCodeBlocks: {
      defaultValue: false,
      describe: 'Omit the default extra whiteline added to code blocks',
      type: 'boolean'
    },
    noHeaderId: {
      defaultValue: false,
      describe: 'Turn on/off generated header id',
      type: 'boolean'
    },
    prefixHeaderId: {
      defaultValue: false,
      describe: 'Add a prefix to the generated header ids. Passing a string will prefix that string to the header id. Setting to true will add a generic \'section-\' prefix',
      type: 'string'
    },
    rawPrefixHeaderId: {
      defaultValue: false,
      describe: 'Setting this option to true will prevent showdown from modifying the prefix. This might result in malformed IDs (if, for instance, the " char is used in the prefix)',
      type: 'boolean'
    },
    ghCompatibleHeaderId: {
      defaultValue: false,
      describe: 'Generate header ids compatible with github style (spaces are replaced with dashes, a bunch of non alphanumeric chars are removed)',
      type: 'boolean'
    },
    rawHeaderId: {
      defaultValue: false,
      describe: 'Remove only spaces, \' and " from generated header ids (including prefixes), replacing them with dashes (-). WARNING: This might result in malformed ids',
      type: 'boolean'
    },
    headerLevelStart: {
      defaultValue: false,
      describe: 'The header blocks level start',
      type: 'integer'
    },
    parseImgDimensions: {
      defaultValue: false,
      describe: 'Turn on/off image dimension parsing',
      type: 'boolean'
    },
    simplifiedAutoLink: {
      defaultValue: false,
      describe: 'Turn on/off GFM autolink style',
      type: 'boolean'
    },
    excludeTrailingPunctuationFromURLs: {
      defaultValue: false,
      describe: 'Excludes trailing punctuation from links generated with autoLinking',
      type: 'boolean'
    },
    literalMidWordUnderscores: {
      defaultValue: false,
      describe: 'Parse midword underscores as literal underscores',
      type: 'boolean'
    },
    literalMidWordAsterisks: {
      defaultValue: false,
      describe: 'Parse midword asterisks as literal asterisks',
      type: 'boolean'
    },
    strikethrough: {
      defaultValue: false,
      describe: 'Turn on/off strikethrough support',
      type: 'boolean'
    },
    tables: {
      defaultValue: false,
      describe: 'Turn on/off tables support',
      type: 'boolean'
    },
    tablesHeaderId: {
      defaultValue: false,
      describe: 'Add an id to table headers',
      type: 'boolean'
    },
    ghCodeBlocks: {
      defaultValue: true,
      describe: 'Turn on/off GFM fenced code blocks support',
      type: 'boolean'
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    tasklists: {
      defaultValue: false,
      describe: 'Turn on/off GFM tasklist support',
      type: 'boolean'
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    smoothLivePreview: {
      defaultValue: false,
      describe: 'Prevents weird effects in live previews due to incomplete input',
      type: 'boolean'
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    smartIndentationFix: {
      defaultValue: false,
      description: 'Tries to smartly fix indentation in es6 strings',
      type: 'boolean'
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    disableForced4SpacesIndentedSublists: {
      defaultValue: false,
      description: 'Disables the requirement of indenting nested sublists by 4 spaces',
      type: 'boolean'
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    simpleLineBreaks: {
      defaultValue: false,
      description: 'Parses simple line breaks as <br> (GFM Style)',
      type: 'boolean'
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    requireSpaceBeforeHeadingText: {
      defaultValue: false,
      description: 'Makes adding a space between `#` and the header text mandatory (GFM Style)',
      type: 'boolean'
    },
    ghMentions: {
      defaultValue: false,
      description: 'Enables github @mentions',
      type: 'boolean'
    },
    ghMentionsLink: {
      defaultValue: 'https://github.com/{u}',
      description: 'Changes the link generated by @mentions. Only applies if ghMentions option is enabled.',
      type: 'string'
    },
    encodeEmails: {
      defaultValue: true,
      description: 'Encode e-mail addresses through the use of Character Entities, transforming ASCII e-mail addresses into its equivalent decimal entities',
      type: 'boolean'
    },
    openLinksInNewWindow: {
      defaultValue: false,
      description: 'Open all links in new windows',
      type: 'boolean'
    },
    backslashEscapesHTMLTags: {
      defaultValue: false,
      description: 'Support for HTML Tag escaping. ex: \<div>foo\</div>',
      type: 'boolean'
    },
    emoji: {
      defaultValue: false,
      description: 'Enable emoji support. Ex: `this is a :smile: emoji`',
      type: 'boolean'
    },
    underline: {
      defaultValue: false,
      description: 'Enable support for underline. Syntax is double or triple underscores: `__underline word__`. With this option enabled, underscores no longer parses into `<em>` and `<strong>`',
      type: 'boolean'
    },
    completeHTMLDocument: {
      defaultValue: false,
      description: 'Outputs a complete html document, including `<html>`, `<head>` and `<body>` tags',
      type: 'boolean'
    },
    metadata: {
      defaultValue: false,
      description: 'Enable support for document metadata (defined at the top of the document between `«««` and `»»»` or between `---` and `---`).',
      type: 'boolean'
    },
    splitAdjacentBlockquotes: {
      defaultValue: false,
      description: 'Split adjacent blockquote blocks',
      type: 'boolean'
    }
  };
  if (simple === false) {
    return JSON.parse(JSON.stringify(defaultOptions));
  }
  var ret = {};
  for (var opt in defaultOptions) {
    if (defaultOptions.hasOwnProperty(opt)) {
      ret[opt] = defaultOptions[opt].defaultValue;
    }
  }
  return ret;
}

function allOptionsOn () {
  'use strict';
  var options = getDefaultOpts(true),
      ret = {};
  for (var opt in options) {
    if (options.hasOwnProperty(opt)) {
      ret[opt] = true;
    }
  }
  return ret;
}

/**
 * Created by Tivie on 06-01-2015.
 */

// Private properties
var showdown = {},
    parsers = {},
    extensions = {},
    globalOptions = getDefaultOpts(true),
    setFlavor = 'vanilla',
    flavor = {
      github: {
        omitExtraWLInCodeBlocks:              true,
        simplifiedAutoLink:                   true,
        excludeTrailingPunctuationFromURLs:   true,
        literalMidWordUnderscores:            true,
        strikethrough:                        true,
        tables:                               true,
        tablesHeaderId:                       true,
        ghCodeBlocks:                         true,
        tasklists:                            true,
        disableForced4SpacesIndentedSublists: true,
        simpleLineBreaks:                     true,
        requireSpaceBeforeHeadingText:        true,
        ghCompatibleHeaderId:                 true,
        ghMentions:                           true,
        backslashEscapesHTMLTags:             true,
        emoji:                                true,
        splitAdjacentBlockquotes:             true
      },
      original: {
        noHeaderId:                           true,
        ghCodeBlocks:                         false
      },
      ghost: {
        omitExtraWLInCodeBlocks:              true,
        parseImgDimensions:                   true,
        simplifiedAutoLink:                   true,
        excludeTrailingPunctuationFromURLs:   true,
        literalMidWordUnderscores:            true,
        strikethrough:                        true,
        tables:                               true,
        tablesHeaderId:                       true,
        ghCodeBlocks:                         true,
        tasklists:                            true,
        smoothLivePreview:                    true,
        simpleLineBreaks:                     true,
        requireSpaceBeforeHeadingText:        true,
        ghMentions:                           false,
        encodeEmails:                         true
      },
      vanilla: getDefaultOpts(true),
      allOn: allOptionsOn()
    };

/**
 * helper namespace
 * @type {{}}
 */
showdown.helper = {};

/**
 * TODO LEGACY SUPPORT CODE
 * @type {{}}
 */
showdown.extensions = {};

/**
 * Set a global option
 * @static
 * @param {string} key
 * @param {*} value
 * @returns {showdown}
 */
showdown.setOption = function (key, value) {
  'use strict';
  globalOptions[key] = value;
  return this;
};

/**
 * Get a global option
 * @static
 * @param {string} key
 * @returns {*}
 */
showdown.getOption = function (key) {
  'use strict';
  return globalOptions[key];
};

/**
 * Get the global options
 * @static
 * @returns {{}}
 */
showdown.getOptions = function () {
  'use strict';
  return globalOptions;
};

/**
 * Reset global options to the default values
 * @static
 */
showdown.resetOptions = function () {
  'use strict';
  globalOptions = getDefaultOpts(true);
};

/**
 * Set the flavor showdown should use as default
 * @param {string} name
 */
showdown.setFlavor = function (name) {
  'use strict';
  if (!flavor.hasOwnProperty(name)) {
    throw Error(name + ' flavor was not found');
  }
  showdown.resetOptions();
  var preset = flavor[name];
  setFlavor = name;
  for (var option in preset) {
    if (preset.hasOwnProperty(option)) {
      globalOptions[option] = preset[option];
    }
  }
};

/**
 * Get the currently set flavor
 * @returns {string}
 */
showdown.getFlavor = function () {
  'use strict';
  return setFlavor;
};

/**
 * Get the options of a specified flavor. Returns undefined if the flavor was not found
 * @param {string} name Name of the flavor
 * @returns {{}|undefined}
 */
showdown.getFlavorOptions = function (name) {
  'use strict';
  if (flavor.hasOwnProperty(name)) {
    return flavor[name];
  }
};

/**
 * Get the default options
 * @static
 * @param {boolean} [simple=true]
 * @returns {{}}
 */
showdown.getDefaultOptions = function (simple) {
  'use strict';
  return getDefaultOpts(simple);
};

/**
 * Get or set a subParser
 *
 * subParser(name)       - Get a registered subParser
 * subParser(name, func) - Register a subParser
 * @static
 * @param {string} name
 * @param {function} [func]
 * @returns {*}
 */
showdown.subParser = function (name, func) {
  'use strict';
  if (showdown.helper.isString(name)) {
    if (typeof func !== 'undefined') {
      parsers[name] = func;
    } else {
      if (parsers.hasOwnProperty(name)) {
        return parsers[name];
      } else {
        throw Error('SubParser named ' + name + ' not registered!');
      }
    }
  }
};

/**
 * Gets or registers an extension
 * @static
 * @param {string} name
 * @param {object|function=} ext
 * @returns {*}
 */
showdown.extension = function (name, ext) {
  'use strict';

  if (!showdown.helper.isString(name)) {
    throw Error('Extension \'name\' must be a string');
  }

  name = showdown.helper.stdExtName(name);

  // Getter
  if (showdown.helper.isUndefined(ext)) {
    if (!extensions.hasOwnProperty(name)) {
      throw Error('Extension named ' + name + ' is not registered!');
    }
    return extensions[name];

    // Setter
  } else {
    // Expand extension if it's wrapped in a function
    if (typeof ext === 'function') {
      ext = ext();
    }

    // Ensure extension is an array
    if (!showdown.helper.isArray(ext)) {
      ext = [ext];
    }

    var validExtension = validate(ext, name);

    if (validExtension.valid) {
      extensions[name] = ext;
    } else {
      throw Error(validExtension.error);
    }
  }
};

/**
 * Gets all extensions registered
 * @returns {{}}
 */
showdown.getAllExtensions = function () {
  'use strict';
  return extensions;
};

/**
 * Remove an extension
 * @param {string} name
 */
showdown.removeExtension = function (name) {
  'use strict';
  delete extensions[name];
};

/**
 * Removes all extensions
 */
showdown.resetExtensions = function () {
  'use strict';
  extensions = {};
};

/**
 * Validate extension
 * @param {array} extension
 * @param {string} name
 * @returns {{valid: boolean, error: string}}
 */
function validate (extension, name) {
  'use strict';

  var errMsg = (name) ? 'Error in ' + name + ' extension->' : 'Error in unnamed extension',
      ret = {
        valid: true,
        error: ''
      };

  if (!showdown.helper.isArray(extension)) {
    extension = [extension];
  }

  for (var i = 0; i < extension.length; ++i) {
    var baseMsg = errMsg + ' sub-extension ' + i + ': ',
        ext = extension[i];
    if (typeof ext !== 'object') {
      ret.valid = false;
      ret.error = baseMsg + 'must be an object, but ' + typeof ext + ' given';
      return ret;
    }

    if (!showdown.helper.isString(ext.type)) {
      ret.valid = false;
      ret.error = baseMsg + 'property "type" must be a string, but ' + typeof ext.type + ' given';
      return ret;
    }

    var type = ext.type = ext.type.toLowerCase();

    // normalize extension type
    if (type === 'language') {
      type = ext.type = 'lang';
    }

    if (type === 'html') {
      type = ext.type = 'output';
    }

    if (type !== 'lang' && type !== 'output' && type !== 'listener') {
      ret.valid = false;
      ret.error = baseMsg + 'type ' + type + ' is not recognized. Valid values: "lang/language", "output/html" or "listener"';
      return ret;
    }

    if (type === 'listener') {
      if (showdown.helper.isUndefined(ext.listeners)) {
        ret.valid = false;
        ret.error = baseMsg + '. Extensions of type "listener" must have a property called "listeners"';
        return ret;
      }
    } else {
      if (showdown.helper.isUndefined(ext.filter) && showdown.helper.isUndefined(ext.regex)) {
        ret.valid = false;
        ret.error = baseMsg + type + ' extensions must define either a "regex" property or a "filter" method';
        return ret;
      }
    }

    if (ext.listeners) {
      if (typeof ext.listeners !== 'object') {
        ret.valid = false;
        ret.error = baseMsg + '"listeners" property must be an object but ' + typeof ext.listeners + ' given';
        return ret;
      }
      for (var ln in ext.listeners) {
        if (ext.listeners.hasOwnProperty(ln)) {
          if (typeof ext.listeners[ln] !== 'function') {
            ret.valid = false;
            ret.error = baseMsg + '"listeners" property must be an hash of [event name]: [callback]. listeners.' + ln +
              ' must be a function but ' + typeof ext.listeners[ln] + ' given';
            return ret;
          }
        }
      }
    }

    if (ext.filter) {
      if (typeof ext.filter !== 'function') {
        ret.valid = false;
        ret.error = baseMsg + '"filter" must be a function, but ' + typeof ext.filter + ' given';
        return ret;
      }
    } else if (ext.regex) {
      if (showdown.helper.isString(ext.regex)) {
        ext.regex = new RegExp(ext.regex, 'g');
      }
      if (!(ext.regex instanceof RegExp)) {
        ret.valid = false;
        ret.error = baseMsg + '"regex" property must either be a string or a RegExp object, but ' + typeof ext.regex + ' given';
        return ret;
      }
      if (showdown.helper.isUndefined(ext.replace)) {
        ret.valid = false;
        ret.error = baseMsg + '"regex" extensions must implement a replace string or function';
        return ret;
      }
    }
  }
  return ret;
}

/**
 * Validate extension
 * @param {object} ext
 * @returns {boolean}
 */
showdown.validateExtension = function (ext) {
  'use strict';

  var validateExtension = validate(ext, null);
  if (!validateExtension.valid) {
    console.warn(validateExtension.error);
    return false;
  }
  return true;
};

/**
 * showdownjs helper functions
 */

if (!showdown.hasOwnProperty('helper')) {
  showdown.helper = {};
}

/**
 * Check if var is string
 * @static
 * @param {string} a
 * @returns {boolean}
 */
showdown.helper.isString = function (a) {
  'use strict';
  return (typeof a === 'string' || a instanceof String);
};

/**
 * Check if var is a function
 * @static
 * @param {*} a
 * @returns {boolean}
 */
showdown.helper.isFunction = function (a) {
  'use strict';
  var getType = {};
  return a && getType.toString.call(a) === '[object Function]';
};

/**
 * isArray helper function
 * @static
 * @param {*} a
 * @returns {boolean}
 */
showdown.helper.isArray = function (a) {
  'use strict';
  return Array.isArray(a);
};

/**
 * Check if value is undefined
 * @static
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`.
 */
showdown.helper.isUndefined = function (value) {
  'use strict';
  return typeof value === 'undefined';
};

/**
 * ForEach helper function
 * Iterates over Arrays and Objects (own properties only)
 * @static
 * @param {*} obj
 * @param {function} callback Accepts 3 params: 1. value, 2. key, 3. the original array/object
 */
showdown.helper.forEach = function (obj, callback) {
  'use strict';
  // check if obj is defined
  if (showdown.helper.isUndefined(obj)) {
    throw new Error('obj param is required');
  }

  if (showdown.helper.isUndefined(callback)) {
    throw new Error('callback param is required');
  }

  if (!showdown.helper.isFunction(callback)) {
    throw new Error('callback param must be a function/closure');
  }

  if (typeof obj.forEach === 'function') {
    obj.forEach(callback);
  } else if (showdown.helper.isArray(obj)) {
    for (var i = 0; i < obj.length; i++) {
      callback(obj[i], i, obj);
    }
  } else if (typeof (obj) === 'object') {
    for (var prop in obj) {
      if (obj.hasOwnProperty(prop)) {
        callback(obj[prop], prop, obj);
      }
    }
  } else {
    throw new Error('obj does not seem to be an array or an iterable object');
  }
};

/**
 * Standardidize extension name
 * @static
 * @param {string} s extension name
 * @returns {string}
 */
showdown.helper.stdExtName = function (s) {
  'use strict';
  return s.replace(/[_?*+\/\\.^-]/g, '').replace(/\s/g, '').toLowerCase();
};

function escapeCharactersCallback (wholeMatch, m1) {
  'use strict';
  var charCodeToEscape = m1.charCodeAt(0);
  return '¨E' + charCodeToEscape + 'E';
}

/**
 * Callback used to escape characters when passing through String.replace
 * @static
 * @param {string} wholeMatch
 * @param {string} m1
 * @returns {string}
 */
showdown.helper.escapeCharactersCallback = escapeCharactersCallback;

/**
 * Escape characters in a string
 * @static
 * @param {string} text
 * @param {string} charsToEscape
 * @param {boolean} afterBackslash
 * @returns {XML|string|void|*}
 */
showdown.helper.escapeCharacters = function (text, charsToEscape, afterBackslash) {
  'use strict';
  // First we have to escape the escape characters so that
  // we can build a character class out of them
  var regexString = '([' + charsToEscape.replace(/([\[\]\\])/g, '\\$1') + '])';

  if (afterBackslash) {
    regexString = '\\\\' + regexString;
  }

  var regex = new RegExp(regexString, 'g');
  text = text.replace(regex, escapeCharactersCallback);

  return text;
};

/**
 * Unescape HTML entities
 * @param txt
 * @returns {string}
 */
showdown.helper.unescapeHTMLEntities = function (txt) {
  'use strict';

  return txt
    .replace(/&quot;/g, '"')
    .replace(/&lt;/g, '<')
    .replace(/&gt;/g, '>')
    .replace(/&amp;/g, '&');
};

var rgxFindMatchPos = function (str, left, right, flags) {
  'use strict';
  var f = flags || '',
      g = f.indexOf('g') > -1,
      x = new RegExp(left + '|' + right, 'g' + f.replace(/g/g, '')),
      l = new RegExp(left, f.replace(/g/g, '')),
      pos = [],
      t, s, m, start, end;

  do {
    t = 0;
    while ((m = x.exec(str))) {
      if (l.test(m[0])) {
        if (!(t++)) {
          s = x.lastIndex;
          start = s - m[0].length;
        }
      } else if (t) {
        if (!--t) {
          end = m.index + m[0].length;
          var obj = {
            left: {start: start, end: s},
            match: {start: s, end: m.index},
            right: {start: m.index, end: end},
            wholeMatch: {start: start, end: end}
          };
          pos.push(obj);
          if (!g) {
            return pos;
          }
        }
      }
    }
  } while (t && (x.lastIndex = s));

  return pos;
};

/**
 * matchRecursiveRegExp
 *
 * (c) 2007 Steven Levithan <stevenlevithan.com>
 * MIT License
 *
 * Accepts a string to search, a left and right format delimiter
 * as regex patterns, and optional regex flags. Returns an array
 * of matches, allowing nested instances of left/right delimiters.
 * Use the "g" flag to return all matches, otherwise only the
 * first is returned. Be careful to ensure that the left and
 * right format delimiters produce mutually exclusive matches.
 * Backreferences are not supported within the right delimiter
 * due to how it is internally combined with the left delimiter.
 * When matching strings whose format delimiters are unbalanced
 * to the left or right, the output is intentionally as a
 * conventional regex library with recursion support would
 * produce, e.g. "<<x>" and "<x>>" both produce ["x"] when using
 * "<" and ">" as the delimiters (both strings contain a single,
 * balanced instance of "<x>").
 *
 * examples:
 * matchRecursiveRegExp("test", "\\(", "\\)")
 * returns: []
 * matchRecursiveRegExp("<t<<e>><s>>t<>", "<", ">", "g")
 * returns: ["t<<e>><s>", ""]
 * matchRecursiveRegExp("<div id=\"x\">test</div>", "<div\\b[^>]*>", "</div>", "gi")
 * returns: ["test"]
 */
showdown.helper.matchRecursiveRegExp = function (str, left, right, flags) {
  'use strict';

  var matchPos = rgxFindMatchPos (str, left, right, flags),
      results = [];

  for (var i = 0; i < matchPos.length; ++i) {
    results.push([
      str.slice(matchPos[i].wholeMatch.start, matchPos[i].wholeMatch.end),
      str.slice(matchPos[i].match.start, matchPos[i].match.end),
      str.slice(matchPos[i].left.start, matchPos[i].left.end),
      str.slice(matchPos[i].right.start, matchPos[i].right.end)
    ]);
  }
  return results;
};

/**
 *
 * @param {string} str
 * @param {string|function} replacement
 * @param {string} left
 * @param {string} right
 * @param {string} flags
 * @returns {string}
 */
showdown.helper.replaceRecursiveRegExp = function (str, replacement, left, right, flags) {
  'use strict';

  if (!showdown.helper.isFunction(replacement)) {
    var repStr = replacement;
    replacement = function () {
      return repStr;
    };
  }

  var matchPos = rgxFindMatchPos(str, left, right, flags),
      finalStr = str,
      lng = matchPos.length;

  if (lng > 0) {
    var bits = [];
    if (matchPos[0].wholeMatch.start !== 0) {
      bits.push(str.slice(0, matchPos[0].wholeMatch.start));
    }
    for (var i = 0; i < lng; ++i) {
      bits.push(
        replacement(
          str.slice(matchPos[i].wholeMatch.start, matchPos[i].wholeMatch.end),
          str.slice(matchPos[i].match.start, matchPos[i].match.end),
          str.slice(matchPos[i].left.start, matchPos[i].left.end),
          str.slice(matchPos[i].right.start, matchPos[i].right.end)
        )
      );
      if (i < lng - 1) {
        bits.push(str.slice(matchPos[i].wholeMatch.end, matchPos[i + 1].wholeMatch.start));
      }
    }
    if (matchPos[lng - 1].wholeMatch.end < str.length) {
      bits.push(str.slice(matchPos[lng - 1].wholeMatch.end));
    }
    finalStr = bits.join('');
  }
  return finalStr;
};

/**
 * Returns the index within the passed String object of the first occurrence of the specified regex,
 * starting the search at fromIndex. Returns -1 if the value is not found.
 *
 * @param {string} str string to search
 * @param {RegExp} regex Regular expression to search
 * @param {int} [fromIndex = 0] Index to start the search
 * @returns {Number}
 * @throws InvalidArgumentError
 */
showdown.helper.regexIndexOf = function (str, regex, fromIndex) {
  'use strict';
  if (!showdown.helper.isString(str)) {
    throw 'InvalidArgumentError: first parameter of showdown.helper.regexIndexOf function must be a string';
  }
  if (regex instanceof RegExp === false) {
    throw 'InvalidArgumentError: second parameter of showdown.helper.regexIndexOf function must be an instance of RegExp';
  }
  var indexOf = str.substring(fromIndex || 0).search(regex);
  return (indexOf >= 0) ? (indexOf + (fromIndex || 0)) : indexOf;
};

/**
 * Splits the passed string object at the defined index, and returns an array composed of the two substrings
 * @param {string} str string to split
 * @param {int} index index to split string at
 * @returns {[string,string]}
 * @throws InvalidArgumentError
 */
showdown.helper.splitAtIndex = function (str, index) {
  'use strict';
  if (!showdown.helper.isString(str)) {
    throw 'InvalidArgumentError: first parameter of showdown.helper.regexIndexOf function must be a string';
  }
  return [str.substring(0, index), str.substring(index)];
};

/**
 * Obfuscate an e-mail address through the use of Character Entities,
 * transforming ASCII characters into their equivalent decimal or hex entities.
 *
 * Since it has a random component, subsequent calls to this function produce different results
 *
 * @param {string} mail
 * @returns {string}
 */
showdown.helper.encodeEmailAddress = function (mail) {
  'use strict';
  var encode = [
    function (ch) {
      return '&#' + ch.charCodeAt(0) + ';';
    },
    function (ch) {
      return '&#x' + ch.charCodeAt(0).toString(16) + ';';
    },
    function (ch) {
      return ch;
    }
  ];

  mail = mail.replace(/./g, function (ch) {
    if (ch === '@') {
      // this *must* be encoded. I insist.
      ch = encode[Math.floor(Math.random() * 2)](ch);
    } else {
      var r = Math.random();
      // roughly 10% raw, 45% hex, 45% dec
      ch = (
        r > 0.9 ? encode[2](ch) : r > 0.45 ? encode[1](ch) : encode[0](ch)
      );
    }
    return ch;
  });

  return mail;
};

/**
 *
 * @param str
 * @param targetLength
 * @param padString
 * @returns {string}
 */
showdown.helper.padEnd = function padEnd (str, targetLength, padString) {
  'use strict';
  /*jshint bitwise: false*/
  // eslint-disable-next-line space-infix-ops
  targetLength = targetLength>>0; //floor if number or convert non-number to 0;
  /*jshint bitwise: true*/
  padString = String(padString || ' ');
  if (str.length > targetLength) {
    return String(str);
  } else {
    targetLength = targetLength - str.length;
    if (targetLength > padString.length) {
      padString += padString.repeat(targetLength / padString.length); //append to original to ensure we are longer than needed
    }
    return String(str) + padString.slice(0,targetLength);
  }
};

/**
 * POLYFILLS
 */
// use this instead of builtin is undefined for IE8 compatibility
if (typeof console === 'undefined') {
  console = {
    warn: function (msg) {
      'use strict';
      alert(msg);
    },
    log: function (msg) {
      'use strict';
      alert(msg);
    },
    error: function (msg) {
      'use strict';
      throw msg;
    }
  };
}

/**
 * Common regexes.
 * We declare some common regexes to improve performance
 */
showdown.helper.regexes = {
  asteriskDashAndColon: /([*_:~])/g
};

/**
 * EMOJIS LIST
 */
showdown.helper.emojis = {
  '+1':'\ud83d\udc4d',
  '-1':'\ud83d\udc4e',
  '100':'\ud83d\udcaf',
  '1234':'\ud83d\udd22',
  '1st_place_medal':'\ud83e\udd47',
  '2nd_place_medal':'\ud83e\udd48',
  '3rd_place_medal':'\ud83e\udd49',
  '8ball':'\ud83c\udfb1',
  'a':'\ud83c\udd70\ufe0f',
  'ab':'\ud83c\udd8e',
  'abc':'\ud83d\udd24',
  'abcd':'\ud83d\udd21',
  'accept':'\ud83c\ude51',
  'aerial_tramway':'\ud83d\udea1',
  'airplane':'\u2708\ufe0f',
  'alarm_clock':'\u23f0',
  'alembic':'\u2697\ufe0f',
  'alien':'\ud83d\udc7d',
  'ambulance':'\ud83d\ude91',
  'amphora':'\ud83c\udffa',
  'anchor':'\u2693\ufe0f',
  'angel':'\ud83d\udc7c',
  'anger':'\ud83d\udca2',
  'angry':'\ud83d\ude20',
  'anguished':'\ud83d\ude27',
  'ant':'\ud83d\udc1c',
  'apple':'\ud83c\udf4e',
  'aquarius':'\u2652\ufe0f',
  'aries':'\u2648\ufe0f',
  'arrow_backward':'\u25c0\ufe0f',
  'arrow_double_down':'\u23ec',
  'arrow_double_up':'\u23eb',
  'arrow_down':'\u2b07\ufe0f',
  'arrow_down_small':'\ud83d\udd3d',
  'arrow_forward':'\u25b6\ufe0f',
  'arrow_heading_down':'\u2935\ufe0f',
  'arrow_heading_up':'\u2934\ufe0f',
  'arrow_left':'\u2b05\ufe0f',
  'arrow_lower_left':'\u2199\ufe0f',
  'arrow_lower_right':'\u2198\ufe0f',
  'arrow_right':'\u27a1\ufe0f',
  'arrow_right_hook':'\u21aa\ufe0f',
  'arrow_up':'\u2b06\ufe0f',
  'arrow_up_down':'\u2195\ufe0f',
  'arrow_up_small':'\ud83d\udd3c',
  'arrow_upper_left':'\u2196\ufe0f',
  'arrow_upper_right':'\u2197\ufe0f',
  'arrows_clockwise':'\ud83d\udd03',
  'arrows_counterclockwise':'\ud83d\udd04',
  'art':'\ud83c\udfa8',
  'articulated_lorry':'\ud83d\ude9b',
  'artificial_satellite':'\ud83d\udef0',
  'astonished':'\ud83d\ude32',
  'athletic_shoe':'\ud83d\udc5f',
  'atm':'\ud83c\udfe7',
  'atom_symbol':'\u269b\ufe0f',
  'avocado':'\ud83e\udd51',
  'b':'\ud83c\udd71\ufe0f',
  'baby':'\ud83d\udc76',
  'baby_bottle':'\ud83c\udf7c',
  'baby_chick':'\ud83d\udc24',
  'baby_symbol':'\ud83d\udebc',
  'back':'\ud83d\udd19',
  'bacon':'\ud83e\udd53',
  'badminton':'\ud83c\udff8',
  'baggage_claim':'\ud83d\udec4',
  'baguette_bread':'\ud83e\udd56',
  'balance_scale':'\u2696\ufe0f',
  'balloon':'\ud83c\udf88',
  'ballot_box':'\ud83d\uddf3',
  'ballot_box_with_check':'\u2611\ufe0f',
  'bamboo':'\ud83c\udf8d',
  'banana':'\ud83c\udf4c',
  'bangbang':'\u203c\ufe0f',
  'bank':'\ud83c\udfe6',
  'bar_chart':'\ud83d\udcca',
  'barber':'\ud83d\udc88',
  'baseball':'\u26be\ufe0f',
  'basketball':'\ud83c\udfc0',
  'basketball_man':'\u26f9\ufe0f',
  'basketball_woman':'\u26f9\ufe0f&zwj;\u2640\ufe0f',
  'bat':'\ud83e\udd87',
  'bath':'\ud83d\udec0',
  'bathtub':'\ud83d\udec1',
  'battery':'\ud83d\udd0b',
  'beach_umbrella':'\ud83c\udfd6',
  'bear':'\ud83d\udc3b',
  'bed':'\ud83d\udecf',
  'bee':'\ud83d\udc1d',
  'beer':'\ud83c\udf7a',
  'beers':'\ud83c\udf7b',
  'beetle':'\ud83d\udc1e',
  'beginner':'\ud83d\udd30',
  'bell':'\ud83d\udd14',
  'bellhop_bell':'\ud83d\udece',
  'bento':'\ud83c\udf71',
  'biking_man':'\ud83d\udeb4',
  'bike':'\ud83d\udeb2',
  'biking_woman':'\ud83d\udeb4&zwj;\u2640\ufe0f',
  'bikini':'\ud83d\udc59',
  'biohazard':'\u2623\ufe0f',
  'bird':'\ud83d\udc26',
  'birthday':'\ud83c\udf82',
  'black_circle':'\u26ab\ufe0f',
  'black_flag':'\ud83c\udff4',
  'black_heart':'\ud83d\udda4',
  'black_joker':'\ud83c\udccf',
  'black_large_square':'\u2b1b\ufe0f',
  'black_medium_small_square':'\u25fe\ufe0f',
  'black_medium_square':'\u25fc\ufe0f',
  'black_nib':'\u2712\ufe0f',
  'black_small_square':'\u25aa\ufe0f',
  'black_square_button':'\ud83d\udd32',
  'blonde_man':'\ud83d\udc71',
  'blonde_woman':'\ud83d\udc71&zwj;\u2640\ufe0f',
  'blossom':'\ud83c\udf3c',
  'blowfish':'\ud83d\udc21',
  'blue_book':'\ud83d\udcd8',
  'blue_car':'\ud83d\ude99',
  'blue_heart':'\ud83d\udc99',
  'blush':'\ud83d\ude0a',
  'boar':'\ud83d\udc17',
  'boat':'\u26f5\ufe0f',
  'bomb':'\ud83d\udca3',
  'book':'\ud83d\udcd6',
  'bookmark':'\ud83d\udd16',
  'bookmark_tabs':'\ud83d\udcd1',
  'books':'\ud83d\udcda',
  'boom':'\ud83d\udca5',
  'boot':'\ud83d\udc62',
  'bouquet':'\ud83d\udc90',
  'bowing_man':'\ud83d\ude47',
  'bow_and_arrow':'\ud83c\udff9',
  'bowing_woman':'\ud83d\ude47&zwj;\u2640\ufe0f',
  'bowling':'\ud83c\udfb3',
  'boxing_glove':'\ud83e\udd4a',
  'boy':'\ud83d\udc66',
  'bread':'\ud83c\udf5e',
  'bride_with_veil':'\ud83d\udc70',
  'bridge_at_night':'\ud83c\udf09',
  'briefcase':'\ud83d\udcbc',
  'broken_heart':'\ud83d\udc94',
  'bug':'\ud83d\udc1b',
  'building_construction':'\ud83c\udfd7',
  'bulb':'\ud83d\udca1',
  'bullettrain_front':'\ud83d\ude85',
  'bullettrain_side':'\ud83d\ude84',
  'burrito':'\ud83c\udf2f',
  'bus':'\ud83d\ude8c',
  'business_suit_levitating':'\ud83d\udd74',
  'busstop':'\ud83d\ude8f',
  'bust_in_silhouette':'\ud83d\udc64',
  'busts_in_silhouette':'\ud83d\udc65',
  'butterfly':'\ud83e\udd8b',
  'cactus':'\ud83c\udf35',
  'cake':'\ud83c\udf70',
  'calendar':'\ud83d\udcc6',
  'call_me_hand':'\ud83e\udd19',
  'calling':'\ud83d\udcf2',
  'camel':'\ud83d\udc2b',
  'camera':'\ud83d\udcf7',
  'camera_flash':'\ud83d\udcf8',
  'camping':'\ud83c\udfd5',
  'cancer':'\u264b\ufe0f',
  'candle':'\ud83d\udd6f',
  'candy':'\ud83c\udf6c',
  'canoe':'\ud83d\udef6',
  'capital_abcd':'\ud83d\udd20',
  'capricorn':'\u2651\ufe0f',
  'car':'\ud83d\ude97',
  'card_file_box':'\ud83d\uddc3',
  'card_index':'\ud83d\udcc7',
  'card_index_dividers':'\ud83d\uddc2',
  'carousel_horse':'\ud83c\udfa0',
  'carrot':'\ud83e\udd55',
  'cat':'\ud83d\udc31',
  'cat2':'\ud83d\udc08',
  'cd':'\ud83d\udcbf',
  'chains':'\u26d3',
  'champagne':'\ud83c\udf7e',
  'chart':'\ud83d\udcb9',
  'chart_with_downwards_trend':'\ud83d\udcc9',
  'chart_with_upwards_trend':'\ud83d\udcc8',
  'checkered_flag':'\ud83c\udfc1',
  'cheese':'\ud83e\uddc0',
  'cherries':'\ud83c\udf52',
  'cherry_blossom':'\ud83c\udf38',
  'chestnut':'\ud83c\udf30',
  'chicken':'\ud83d\udc14',
  'children_crossing':'\ud83d\udeb8',
  'chipmunk':'\ud83d\udc3f',
  'chocolate_bar':'\ud83c\udf6b',
  'christmas_tree':'\ud83c\udf84',
  'church':'\u26ea\ufe0f',
  'cinema':'\ud83c\udfa6',
  'circus_tent':'\ud83c\udfaa',
  'city_sunrise':'\ud83c\udf07',
  'city_sunset':'\ud83c\udf06',
  'cityscape':'\ud83c\udfd9',
  'cl':'\ud83c\udd91',
  'clamp':'\ud83d\udddc',
  'clap':'\ud83d\udc4f',
  'clapper':'\ud83c\udfac',
  'classical_building':'\ud83c\udfdb',
  'clinking_glasses':'\ud83e\udd42',
  'clipboard':'\ud83d\udccb',
  'clock1':'\ud83d\udd50',
  'clock10':'\ud83d\udd59',
  'clock1030':'\ud83d\udd65',
  'clock11':'\ud83d\udd5a',
  'clock1130':'\ud83d\udd66',
  'clock12':'\ud83d\udd5b',
  'clock1230':'\ud83d\udd67',
  'clock130':'\ud83d\udd5c',
  'clock2':'\ud83d\udd51',
  'clock230':'\ud83d\udd5d',
  'clock3':'\ud83d\udd52',
  'clock330':'\ud83d\udd5e',
  'clock4':'\ud83d\udd53',
  'clock430':'\ud83d\udd5f',
  'clock5':'\ud83d\udd54',
  'clock530':'\ud83d\udd60',
  'clock6':'\ud83d\udd55',
  'clock630':'\ud83d\udd61',
  'clock7':'\ud83d\udd56',
  'clock730':'\ud83d\udd62',
  'clock8':'\ud83d\udd57',
  'clock830':'\ud83d\udd63',
  'clock9':'\ud83d\udd58',
  'clock930':'\ud83d\udd64',
  'closed_book':'\ud83d\udcd5',
  'closed_lock_with_key':'\ud83d\udd10',
  'closed_umbrella':'\ud83c\udf02',
  'cloud':'\u2601\ufe0f',
  'cloud_with_lightning':'\ud83c\udf29',
  'cloud_with_lightning_and_rain':'\u26c8',
  'cloud_with_rain':'\ud83c\udf27',
  'cloud_with_snow':'\ud83c\udf28',
  'clown_face':'\ud83e\udd21',
  'clubs':'\u2663\ufe0f',
  'cocktail':'\ud83c\udf78',
  'coffee':'\u2615\ufe0f',
  'coffin':'\u26b0\ufe0f',
  'cold_sweat':'\ud83d\ude30',
  'comet':'\u2604\ufe0f',
  'computer':'\ud83d\udcbb',
  'computer_mouse':'\ud83d\uddb1',
  'confetti_ball':'\ud83c\udf8a',
  'confounded':'\ud83d\ude16',
  'confused':'\ud83d\ude15',
  'congratulations':'\u3297\ufe0f',
  'construction':'\ud83d\udea7',
  'construction_worker_man':'\ud83d\udc77',
  'construction_worker_woman':'\ud83d\udc77&zwj;\u2640\ufe0f',
  'control_knobs':'\ud83c\udf9b',
  'convenience_store':'\ud83c\udfea',
  'cookie':'\ud83c\udf6a',
  'cool':'\ud83c\udd92',
  'policeman':'\ud83d\udc6e',
  'copyright':'\u00a9\ufe0f',
  'corn':'\ud83c\udf3d',
  'couch_and_lamp':'\ud83d\udecb',
  'couple':'\ud83d\udc6b',
  'couple_with_heart_woman_man':'\ud83d\udc91',
  'couple_with_heart_man_man':'\ud83d\udc68&zwj;\u2764\ufe0f&zwj;\ud83d\udc68',
  'couple_with_heart_woman_woman':'\ud83d\udc69&zwj;\u2764\ufe0f&zwj;\ud83d\udc69',
  'couplekiss_man_man':'\ud83d\udc68&zwj;\u2764\ufe0f&zwj;\ud83d\udc8b&zwj;\ud83d\udc68',
  'couplekiss_man_woman':'\ud83d\udc8f',
  'couplekiss_woman_woman':'\ud83d\udc69&zwj;\u2764\ufe0f&zwj;\ud83d\udc8b&zwj;\ud83d\udc69',
  'cow':'\ud83d\udc2e',
  'cow2':'\ud83d\udc04',
  'cowboy_hat_face':'\ud83e\udd20',
  'crab':'\ud83e\udd80',
  'crayon':'\ud83d\udd8d',
  'credit_card':'\ud83d\udcb3',
  'crescent_moon':'\ud83c\udf19',
  'cricket':'\ud83c\udfcf',
  'crocodile':'\ud83d\udc0a',
  'croissant':'\ud83e\udd50',
  'crossed_fingers':'\ud83e\udd1e',
  'crossed_flags':'\ud83c\udf8c',
  'crossed_swords':'\u2694\ufe0f',
  'crown':'\ud83d\udc51',
  'cry':'\ud83d\ude22',
  'crying_cat_face':'\ud83d\ude3f',
  'crystal_ball':'\ud83d\udd2e',
  'cucumber':'\ud83e\udd52',
  'cupid':'\ud83d\udc98',
  'curly_loop':'\u27b0',
  'currency_exchange':'\ud83d\udcb1',
  'curry':'\ud83c\udf5b',
  'custard':'\ud83c\udf6e',
  'customs':'\ud83d\udec3',
  'cyclone':'\ud83c\udf00',
  'dagger':'\ud83d\udde1',
  'dancer':'\ud83d\udc83',
  'dancing_women':'\ud83d\udc6f',
  'dancing_men':'\ud83d\udc6f&zwj;\u2642\ufe0f',
  'dango':'\ud83c\udf61',
  'dark_sunglasses':'\ud83d\udd76',
  'dart':'\ud83c\udfaf',
  'dash':'\ud83d\udca8',
  'date':'\ud83d\udcc5',
  'deciduous_tree':'\ud83c\udf33',
  'deer':'\ud83e\udd8c',
  'department_store':'\ud83c\udfec',
  'derelict_house':'\ud83c\udfda',
  'desert':'\ud83c\udfdc',
  'desert_island':'\ud83c\udfdd',
  'desktop_computer':'\ud83d\udda5',
  'male_detective':'\ud83d\udd75\ufe0f',
  'diamond_shape_with_a_dot_inside':'\ud83d\udca0',
  'diamonds':'\u2666\ufe0f',
  'disappointed':'\ud83d\ude1e',
  'disappointed_relieved':'\ud83d\ude25',
  'dizzy':'\ud83d\udcab',
  'dizzy_face':'\ud83d\ude35',
  'do_not_litter':'\ud83d\udeaf',
  'dog':'\ud83d\udc36',
  'dog2':'\ud83d\udc15',
  'dollar':'\ud83d\udcb5',
  'dolls':'\ud83c\udf8e',
  'dolphin':'\ud83d\udc2c',
  'door':'\ud83d\udeaa',
  'doughnut':'\ud83c\udf69',
  'dove':'\ud83d\udd4a',
  'dragon':'\ud83d\udc09',
  'dragon_face':'\ud83d\udc32',
  'dress':'\ud83d\udc57',
  'dromedary_camel':'\ud83d\udc2a',
  'drooling_face':'\ud83e\udd24',
  'droplet':'\ud83d\udca7',
  'drum':'\ud83e\udd41',
  'duck':'\ud83e\udd86',
  'dvd':'\ud83d\udcc0',
  'e-mail':'\ud83d\udce7',
  'eagle':'\ud83e\udd85',
  'ear':'\ud83d\udc42',
  'ear_of_rice':'\ud83c\udf3e',
  'earth_africa':'\ud83c\udf0d',
  'earth_americas':'\ud83c\udf0e',
  'earth_asia':'\ud83c\udf0f',
  'egg':'\ud83e\udd5a',
  'eggplant':'\ud83c\udf46',
  'eight_pointed_black_star':'\u2734\ufe0f',
  'eight_spoked_asterisk':'\u2733\ufe0f',
  'electric_plug':'\ud83d\udd0c',
  'elephant':'\ud83d\udc18',
  'email':'\u2709\ufe0f',
  'end':'\ud83d\udd1a',
  'envelope_with_arrow':'\ud83d\udce9',
  'euro':'\ud83d\udcb6',
  'european_castle':'\ud83c\udff0',
  'european_post_office':'\ud83c\udfe4',
  'evergreen_tree':'\ud83c\udf32',
  'exclamation':'\u2757\ufe0f',
  'expressionless':'\ud83d\ude11',
  'eye':'\ud83d\udc41',
  'eye_speech_bubble':'\ud83d\udc41&zwj;\ud83d\udde8',
  'eyeglasses':'\ud83d\udc53',
  'eyes':'\ud83d\udc40',
  'face_with_head_bandage':'\ud83e\udd15',
  'face_with_thermometer':'\ud83e\udd12',
  'fist_oncoming':'\ud83d\udc4a',
  'factory':'\ud83c\udfed',
  'fallen_leaf':'\ud83c\udf42',
  'family_man_woman_boy':'\ud83d\udc6a',
  'family_man_boy':'\ud83d\udc68&zwj;\ud83d\udc66',
  'family_man_boy_boy':'\ud83d\udc68&zwj;\ud83d\udc66&zwj;\ud83d\udc66',
  'family_man_girl':'\ud83d\udc68&zwj;\ud83d\udc67',
  'family_man_girl_boy':'\ud83d\udc68&zwj;\ud83d\udc67&zwj;\ud83d\udc66',
  'family_man_girl_girl':'\ud83d\udc68&zwj;\ud83d\udc67&zwj;\ud83d\udc67',
  'family_man_man_boy':'\ud83d\udc68&zwj;\ud83d\udc68&zwj;\ud83d\udc66',
  'family_man_man_boy_boy':'\ud83d\udc68&zwj;\ud83d\udc68&zwj;\ud83d\udc66&zwj;\ud83d\udc66',
  'family_man_man_girl':'\ud83d\udc68&zwj;\ud83d\udc68&zwj;\ud83d\udc67',
  'family_man_man_girl_boy':'\ud83d\udc68&zwj;\ud83d\udc68&zwj;\ud83d\udc67&zwj;\ud83d\udc66',
  'family_man_man_girl_girl':'\ud83d\udc68&zwj;\ud83d\udc68&zwj;\ud83d\udc67&zwj;\ud83d\udc67',
  'family_man_woman_boy_boy':'\ud83d\udc68&zwj;\ud83d\udc69&zwj;\ud83d\udc66&zwj;\ud83d\udc66',
  'family_man_woman_girl':'\ud83d\udc68&zwj;\ud83d\udc69&zwj;\ud83d\udc67',
  'family_man_woman_girl_boy':'\ud83d\udc68&zwj;\ud83d\udc69&zwj;\ud83d\udc67&zwj;\ud83d\udc66',
  'family_man_woman_girl_girl':'\ud83d\udc68&zwj;\ud83d\udc69&zwj;\ud83d\udc67&zwj;\ud83d\udc67',
  'family_woman_boy':'\ud83d\udc69&zwj;\ud83d\udc66',
  'family_woman_boy_boy':'\ud83d\udc69&zwj;\ud83d\udc66&zwj;\ud83d\udc66',
  'family_woman_girl':'\ud83d\udc69&zwj;\ud83d\udc67',
  'family_woman_girl_boy':'\ud83d\udc69&zwj;\ud83d\udc67&zwj;\ud83d\udc66',
  'family_woman_girl_girl':'\ud83d\udc69&zwj;\ud83d\udc67&zwj;\ud83d\udc67',
  'family_woman_woman_boy':'\ud83d\udc69&zwj;\ud83d\udc69&zwj;\ud83d\udc66',
  'family_woman_woman_boy_boy':'\ud83d\udc69&zwj;\ud83d\udc69&zwj;\ud83d\udc66&zwj;\ud83d\udc66',
  'family_woman_woman_girl':'\ud83d\udc69&zwj;\ud83d\udc69&zwj;\ud83d\udc67',
  'family_woman_woman_girl_boy':'\ud83d\udc69&zwj;\ud83d\udc69&zwj;\ud83d\udc67&zwj;\ud83d\udc66',
  'family_woman_woman_girl_girl':'\ud83d\udc69&zwj;\ud83d\udc69&zwj;\ud83d\udc67&zwj;\ud83d\udc67',
  'fast_forward':'\u23e9',
  'fax':'\ud83d\udce0',
  'fearful':'\ud83d\ude28',
  'feet':'\ud83d\udc3e',
  'female_detective':'\ud83d\udd75\ufe0f&zwj;\u2640\ufe0f',
  'ferris_wheel':'\ud83c\udfa1',
  'ferry':'\u26f4',
  'field_hockey':'\ud83c\udfd1',
  'file_cabinet':'\ud83d\uddc4',
  'file_folder':'\ud83d\udcc1',
  'film_projector':'\ud83d\udcfd',
  'film_strip':'\ud83c\udf9e',
  'fire':'\ud83d\udd25',
  'fire_engine':'\ud83d\ude92',
  'fireworks':'\ud83c\udf86',
  'first_quarter_moon':'\ud83c\udf13',
  'first_quarter_moon_with_face':'\ud83c\udf1b',
  'fish':'\ud83d\udc1f',
  'fish_cake':'\ud83c\udf65',
  'fishing_pole_and_fish':'\ud83c\udfa3',
  'fist_raised':'\u270a',
  'fist_left':'\ud83e\udd1b',
  'fist_right':'\ud83e\udd1c',
  'flags':'\ud83c\udf8f',
  'flashlight':'\ud83d\udd26',
  'fleur_de_lis':'\u269c\ufe0f',
  'flight_arrival':'\ud83d\udeec',
  'flight_departure':'\ud83d\udeeb',
  'floppy_disk':'\ud83d\udcbe',
  'flower_playing_cards':'\ud83c\udfb4',
  'flushed':'\ud83d\ude33',
  'fog':'\ud83c\udf2b',
  'foggy':'\ud83c\udf01',
  'football':'\ud83c\udfc8',
  'footprints':'\ud83d\udc63',
  'fork_and_knife':'\ud83c\udf74',
  'fountain':'\u26f2\ufe0f',
  'fountain_pen':'\ud83d\udd8b',
  'four_leaf_clover':'\ud83c\udf40',
  'fox_face':'\ud83e\udd8a',
  'framed_picture':'\ud83d\uddbc',
  'free':'\ud83c\udd93',
  'fried_egg':'\ud83c\udf73',
  'fried_shrimp':'\ud83c\udf64',
  'fries':'\ud83c\udf5f',
  'frog':'\ud83d\udc38',
  'frowning':'\ud83d\ude26',
  'frowning_face':'\u2639\ufe0f',
  'frowning_man':'\ud83d\ude4d&zwj;\u2642\ufe0f',
  'frowning_woman':'\ud83d\ude4d',
  'middle_finger':'\ud83d\udd95',
  'fuelpump':'\u26fd\ufe0f',
  'full_moon':'\ud83c\udf15',
  'full_moon_with_face':'\ud83c\udf1d',
  'funeral_urn':'\u26b1\ufe0f',
  'game_die':'\ud83c\udfb2',
  'gear':'\u2699\ufe0f',
  'gem':'\ud83d\udc8e',
  'gemini':'\u264a\ufe0f',
  'ghost':'\ud83d\udc7b',
  'gift':'\ud83c\udf81',
  'gift_heart':'\ud83d\udc9d',
  'girl':'\ud83d\udc67',
  'globe_with_meridians':'\ud83c\udf10',
  'goal_net':'\ud83e\udd45',
  'goat':'\ud83d\udc10',
  'golf':'\u26f3\ufe0f',
  'golfing_man':'\ud83c\udfcc\ufe0f',
  'golfing_woman':'\ud83c\udfcc\ufe0f&zwj;\u2640\ufe0f',
  'gorilla':'\ud83e\udd8d',
  'grapes':'\ud83c\udf47',
  'green_apple':'\ud83c\udf4f',
  'green_book':'\ud83d\udcd7',
  'green_heart':'\ud83d\udc9a',
  'green_salad':'\ud83e\udd57',
  'grey_exclamation':'\u2755',
  'grey_question':'\u2754',
  'grimacing':'\ud83d\ude2c',
  'grin':'\ud83d\ude01',
  'grinning':'\ud83d\ude00',
  'guardsman':'\ud83d\udc82',
  'guardswoman':'\ud83d\udc82&zwj;\u2640\ufe0f',
  'guitar':'\ud83c\udfb8',
  'gun':'\ud83d\udd2b',
  'haircut_woman':'\ud83d\udc87',
  'haircut_man':'\ud83d\udc87&zwj;\u2642\ufe0f',
  'hamburger':'\ud83c\udf54',
  'hammer':'\ud83d\udd28',
  'hammer_and_pick':'\u2692',
  'hammer_and_wrench':'\ud83d\udee0',
  'hamster':'\ud83d\udc39',
  'hand':'\u270b',
  'handbag':'\ud83d\udc5c',
  'handshake':'\ud83e\udd1d',
  'hankey':'\ud83d\udca9',
  'hatched_chick':'\ud83d\udc25',
  'hatching_chick':'\ud83d\udc23',
  'headphones':'\ud83c\udfa7',
  'hear_no_evil':'\ud83d\ude49',
  'heart':'\u2764\ufe0f',
  'heart_decoration':'\ud83d\udc9f',
  'heart_eyes':'\ud83d\ude0d',
  'heart_eyes_cat':'\ud83d\ude3b',
  'heartbeat':'\ud83d\udc93',
  'heartpulse':'\ud83d\udc97',
  'hearts':'\u2665\ufe0f',
  'heavy_check_mark':'\u2714\ufe0f',
  'heavy_division_sign':'\u2797',
  'heavy_dollar_sign':'\ud83d\udcb2',
  'heavy_heart_exclamation':'\u2763\ufe0f',
  'heavy_minus_sign':'\u2796',
  'heavy_multiplication_x':'\u2716\ufe0f',
  'heavy_plus_sign':'\u2795',
  'helicopter':'\ud83d\ude81',
  'herb':'\ud83c\udf3f',
  'hibiscus':'\ud83c\udf3a',
  'high_brightness':'\ud83d\udd06',
  'high_heel':'\ud83d\udc60',
  'hocho':'\ud83d\udd2a',
  'hole':'\ud83d\udd73',
  'honey_pot':'\ud83c\udf6f',
  'horse':'\ud83d\udc34',
  'horse_racing':'\ud83c\udfc7',
  'hospital':'\ud83c\udfe5',
  'hot_pepper':'\ud83c\udf36',
  'hotdog':'\ud83c\udf2d',
  'hotel':'\ud83c\udfe8',
  'hotsprings':'\u2668\ufe0f',
  'hourglass':'\u231b\ufe0f',
  'hourglass_flowing_sand':'\u23f3',
  'house':'\ud83c\udfe0',
  'house_with_garden':'\ud83c\udfe1',
  'houses':'\ud83c\udfd8',
  'hugs':'\ud83e\udd17',
  'hushed':'\ud83d\ude2f',
  'ice_cream':'\ud83c\udf68',
  'ice_hockey':'\ud83c\udfd2',
  'ice_skate':'\u26f8',
  'icecream':'\ud83c\udf66',
  'id':'\ud83c\udd94',
  'ideograph_advantage':'\ud83c\ude50',
  'imp':'\ud83d\udc7f',
  'inbox_tray':'\ud83d\udce5',
  'incoming_envelope':'\ud83d\udce8',
  'tipping_hand_woman':'\ud83d\udc81',
  'information_source':'\u2139\ufe0f',
  'innocent':'\ud83d\ude07',
  'interrobang':'\u2049\ufe0f',
  'iphone':'\ud83d\udcf1',
  'izakaya_lantern':'\ud83c\udfee',
  'jack_o_lantern':'\ud83c\udf83',
  'japan':'\ud83d\uddfe',
  'japanese_castle':'\ud83c\udfef',
  'japanese_goblin':'\ud83d\udc7a',
  'japanese_ogre':'\ud83d\udc79',
  'jeans':'\ud83d\udc56',
  'joy':'\ud83d\ude02',
  'joy_cat':'\ud83d\ude39',
  'joystick':'\ud83d\udd79',
  'kaaba':'\ud83d\udd4b',
  'key':'\ud83d\udd11',
  'keyboard':'\u2328\ufe0f',
  'keycap_ten':'\ud83d\udd1f',
  'kick_scooter':'\ud83d\udef4',
  'kimono':'\ud83d\udc58',
  'kiss':'\ud83d\udc8b',
  'kissing':'\ud83d\ude17',
  'kissing_cat':'\ud83d\ude3d',
  'kissing_closed_eyes':'\ud83d\ude1a',
  'kissing_heart':'\ud83d\ude18',
  'kissing_smiling_eyes':'\ud83d\ude19',
  'kiwi_fruit':'\ud83e\udd5d',
  'koala':'\ud83d\udc28',
  'koko':'\ud83c\ude01',
  'label':'\ud83c\udff7',
  'large_blue_circle':'\ud83d\udd35',
  'large_blue_diamond':'\ud83d\udd37',
  'large_orange_diamond':'\ud83d\udd36',
  'last_quarter_moon':'\ud83c\udf17',
  'last_quarter_moon_with_face':'\ud83c\udf1c',
  'latin_cross':'\u271d\ufe0f',
  'laughing':'\ud83d\ude06',
  'leaves':'\ud83c\udf43',
  'ledger':'\ud83d\udcd2',
  'left_luggage':'\ud83d\udec5',
  'left_right_arrow':'\u2194\ufe0f',
  'leftwards_arrow_with_hook':'\u21a9\ufe0f',
  'lemon':'\ud83c\udf4b',
  'leo':'\u264c\ufe0f',
  'leopard':'\ud83d\udc06',
  'level_slider':'\ud83c\udf9a',
  'libra':'\u264e\ufe0f',
  'light_rail':'\ud83d\ude88',
  'link':'\ud83d\udd17',
  'lion':'\ud83e\udd81',
  'lips':'\ud83d\udc44',
  'lipstick':'\ud83d\udc84',
  'lizard':'\ud83e\udd8e',
  'lock':'\ud83d\udd12',
  'lock_with_ink_pen':'\ud83d\udd0f',
  'lollipop':'\ud83c\udf6d',
  'loop':'\u27bf',
  'loud_sound':'\ud83d\udd0a',
  'loudspeaker':'\ud83d\udce2',
  'love_hotel':'\ud83c\udfe9',
  'love_letter':'\ud83d\udc8c',
  'low_brightness':'\ud83d\udd05',
  'lying_face':'\ud83e\udd25',
  'm':'\u24c2\ufe0f',
  'mag':'\ud83d\udd0d',
  'mag_right':'\ud83d\udd0e',
  'mahjong':'\ud83c\udc04\ufe0f',
  'mailbox':'\ud83d\udceb',
  'mailbox_closed':'\ud83d\udcea',
  'mailbox_with_mail':'\ud83d\udcec',
  'mailbox_with_no_mail':'\ud83d\udced',
  'man':'\ud83d\udc68',
  'man_artist':'\ud83d\udc68&zwj;\ud83c\udfa8',
  'man_astronaut':'\ud83d\udc68&zwj;\ud83d\ude80',
  'man_cartwheeling':'\ud83e\udd38&zwj;\u2642\ufe0f',
  'man_cook':'\ud83d\udc68&zwj;\ud83c\udf73',
  'man_dancing':'\ud83d\udd7a',
  'man_facepalming':'\ud83e\udd26&zwj;\u2642\ufe0f',
  'man_factory_worker':'\ud83d\udc68&zwj;\ud83c\udfed',
  'man_farmer':'\ud83d\udc68&zwj;\ud83c\udf3e',
  'man_firefighter':'\ud83d\udc68&zwj;\ud83d\ude92',
  'man_health_worker':'\ud83d\udc68&zwj;\u2695\ufe0f',
  'man_in_tuxedo':'\ud83e\udd35',
  'man_judge':'\ud83d\udc68&zwj;\u2696\ufe0f',
  'man_juggling':'\ud83e\udd39&zwj;\u2642\ufe0f',
  'man_mechanic':'\ud83d\udc68&zwj;\ud83d\udd27',
  'man_office_worker':'\ud83d\udc68&zwj;\ud83d\udcbc',
  'man_pilot':'\ud83d\udc68&zwj;\u2708\ufe0f',
  'man_playing_handball':'\ud83e\udd3e&zwj;\u2642\ufe0f',
  'man_playing_water_polo':'\ud83e\udd3d&zwj;\u2642\ufe0f',
  'man_scientist':'\ud83d\udc68&zwj;\ud83d\udd2c',
  'man_shrugging':'\ud83e\udd37&zwj;\u2642\ufe0f',
  'man_singer':'\ud83d\udc68&zwj;\ud83c\udfa4',
  'man_student':'\ud83d\udc68&zwj;\ud83c\udf93',
  'man_teacher':'\ud83d\udc68&zwj;\ud83c\udfeb',
  'man_technologist':'\ud83d\udc68&zwj;\ud83d\udcbb',
  'man_with_gua_pi_mao':'\ud83d\udc72',
  'man_with_turban':'\ud83d\udc73',
  'tangerine':'\ud83c\udf4a',
  'mans_shoe':'\ud83d\udc5e',
  'mantelpiece_clock':'\ud83d\udd70',
  'maple_leaf':'\ud83c\udf41',
  'martial_arts_uniform':'\ud83e\udd4b',
  'mask':'\ud83d\ude37',
  'massage_woman':'\ud83d\udc86',
  'massage_man':'\ud83d\udc86&zwj;\u2642\ufe0f',
  'meat_on_bone':'\ud83c\udf56',
  'medal_military':'\ud83c\udf96',
  'medal_sports':'\ud83c\udfc5',
  'mega':'\ud83d\udce3',
  'melon':'\ud83c\udf48',
  'memo':'\ud83d\udcdd',
  'men_wrestling':'\ud83e\udd3c&zwj;\u2642\ufe0f',
  'menorah':'\ud83d\udd4e',
  'mens':'\ud83d\udeb9',
  'metal':'\ud83e\udd18',
  'metro':'\ud83d\ude87',
  'microphone':'\ud83c\udfa4',
  'microscope':'\ud83d\udd2c',
  'milk_glass':'\ud83e\udd5b',
  'milky_way':'\ud83c\udf0c',
  'minibus':'\ud83d\ude90',
  'minidisc':'\ud83d\udcbd',
  'mobile_phone_off':'\ud83d\udcf4',
  'money_mouth_face':'\ud83e\udd11',
  'money_with_wings':'\ud83d\udcb8',
  'moneybag':'\ud83d\udcb0',
  'monkey':'\ud83d\udc12',
  'monkey_face':'\ud83d\udc35',
  'monorail':'\ud83d\ude9d',
  'moon':'\ud83c\udf14',
  'mortar_board':'\ud83c\udf93',
  'mosque':'\ud83d\udd4c',
  'motor_boat':'\ud83d\udee5',
  'motor_scooter':'\ud83d\udef5',
  'motorcycle':'\ud83c\udfcd',
  'motorway':'\ud83d\udee3',
  'mount_fuji':'\ud83d\uddfb',
  'mountain':'\u26f0',
  'mountain_biking_man':'\ud83d\udeb5',
  'mountain_biking_woman':'\ud83d\udeb5&zwj;\u2640\ufe0f',
  'mountain_cableway':'\ud83d\udea0',
  'mountain_railway':'\ud83d\ude9e',
  'mountain_snow':'\ud83c\udfd4',
  'mouse':'\ud83d\udc2d',
  'mouse2':'\ud83d\udc01',
  'movie_camera':'\ud83c\udfa5',
  'moyai':'\ud83d\uddff',
  'mrs_claus':'\ud83e\udd36',
  'muscle':'\ud83d\udcaa',
  'mushroom':'\ud83c\udf44',
  'musical_keyboard':'\ud83c\udfb9',
  'musical_note':'\ud83c\udfb5',
  'musical_score':'\ud83c\udfbc',
  'mute':'\ud83d\udd07',
  'nail_care':'\ud83d\udc85',
  'name_badge':'\ud83d\udcdb',
  'national_park':'\ud83c\udfde',
  'nauseated_face':'\ud83e\udd22',
  'necktie':'\ud83d\udc54',
  'negative_squared_cross_mark':'\u274e',
  'nerd_face':'\ud83e\udd13',
  'neutral_face':'\ud83d\ude10',
  'new':'\ud83c\udd95',
  'new_moon':'\ud83c\udf11',
  'new_moon_with_face':'\ud83c\udf1a',
  'newspaper':'\ud83d\udcf0',
  'newspaper_roll':'\ud83d\uddde',
  'next_track_button':'\u23ed',
  'ng':'\ud83c\udd96',
  'no_good_man':'\ud83d\ude45&zwj;\u2642\ufe0f',
  'no_good_woman':'\ud83d\ude45',
  'night_with_stars':'\ud83c\udf03',
  'no_bell':'\ud83d\udd15',
  'no_bicycles':'\ud83d\udeb3',
  'no_entry':'\u26d4\ufe0f',
  'no_entry_sign':'\ud83d\udeab',
  'no_mobile_phones':'\ud83d\udcf5',
  'no_mouth':'\ud83d\ude36',
  'no_pedestrians':'\ud83d\udeb7',
  'no_smoking':'\ud83d\udead',
  'non-potable_water':'\ud83d\udeb1',
  'nose':'\ud83d\udc43',
  'notebook':'\ud83d\udcd3',
  'notebook_with_decorative_cover':'\ud83d\udcd4',
  'notes':'\ud83c\udfb6',
  'nut_and_bolt':'\ud83d\udd29',
  'o':'\u2b55\ufe0f',
  'o2':'\ud83c\udd7e\ufe0f',
  'ocean':'\ud83c\udf0a',
  'octopus':'\ud83d\udc19',
  'oden':'\ud83c\udf62',
  'office':'\ud83c\udfe2',
  'oil_drum':'\ud83d\udee2',
  'ok':'\ud83c\udd97',
  'ok_hand':'\ud83d\udc4c',
  'ok_man':'\ud83d\ude46&zwj;\u2642\ufe0f',
  'ok_woman':'\ud83d\ude46',
  'old_key':'\ud83d\udddd',
  'older_man':'\ud83d\udc74',
  'older_woman':'\ud83d\udc75',
  'om':'\ud83d\udd49',
  'on':'\ud83d\udd1b',
  'oncoming_automobile':'\ud83d\ude98',
  'oncoming_bus':'\ud83d\ude8d',
  'oncoming_police_car':'\ud83d\ude94',
  'oncoming_taxi':'\ud83d\ude96',
  'open_file_folder':'\ud83d\udcc2',
  'open_hands':'\ud83d\udc50',
  'open_mouth':'\ud83d\ude2e',
  'open_umbrella':'\u2602\ufe0f',
  'ophiuchus':'\u26ce',
  'orange_book':'\ud83d\udcd9',
  'orthodox_cross':'\u2626\ufe0f',
  'outbox_tray':'\ud83d\udce4',
  'owl':'\ud83e\udd89',
  'ox':'\ud83d\udc02',
  'package':'\ud83d\udce6',
  'page_facing_up':'\ud83d\udcc4',
  'page_with_curl':'\ud83d\udcc3',
  'pager':'\ud83d\udcdf',
  'paintbrush':'\ud83d\udd8c',
  'palm_tree':'\ud83c\udf34',
  'pancakes':'\ud83e\udd5e',
  'panda_face':'\ud83d\udc3c',
  'paperclip':'\ud83d\udcce',
  'paperclips':'\ud83d\udd87',
  'parasol_on_ground':'\u26f1',
  'parking':'\ud83c\udd7f\ufe0f',
  'part_alternation_mark':'\u303d\ufe0f',
  'partly_sunny':'\u26c5\ufe0f',
  'passenger_ship':'\ud83d\udef3',
  'passport_control':'\ud83d\udec2',
  'pause_button':'\u23f8',
  'peace_symbol':'\u262e\ufe0f',
  'peach':'\ud83c\udf51',
  'peanuts':'\ud83e\udd5c',
  'pear':'\ud83c\udf50',
  'pen':'\ud83d\udd8a',
  'pencil2':'\u270f\ufe0f',
  'penguin':'\ud83d\udc27',
  'pensive':'\ud83d\ude14',
  'performing_arts':'\ud83c\udfad',
  'persevere':'\ud83d\ude23',
  'person_fencing':'\ud83e\udd3a',
  'pouting_woman':'\ud83d\ude4e',
  'phone':'\u260e\ufe0f',
  'pick':'\u26cf',
  'pig':'\ud83d\udc37',
  'pig2':'\ud83d\udc16',
  'pig_nose':'\ud83d\udc3d',
  'pill':'\ud83d\udc8a',
  'pineapple':'\ud83c\udf4d',
  'ping_pong':'\ud83c\udfd3',
  'pisces':'\u2653\ufe0f',
  'pizza':'\ud83c\udf55',
  'place_of_worship':'\ud83d\uded0',
  'plate_with_cutlery':'\ud83c\udf7d',
  'play_or_pause_button':'\u23ef',
  'point_down':'\ud83d\udc47',
  'point_left':'\ud83d\udc48',
  'point_right':'\ud83d\udc49',
  'point_up':'\u261d\ufe0f',
  'point_up_2':'\ud83d\udc46',
  'police_car':'\ud83d\ude93',
  'policewoman':'\ud83d\udc6e&zwj;\u2640\ufe0f',
  'poodle':'\ud83d\udc29',
  'popcorn':'\ud83c\udf7f',
  'post_office':'\ud83c\udfe3',
  'postal_horn':'\ud83d\udcef',
  'postbox':'\ud83d\udcee',
  'potable_water':'\ud83d\udeb0',
  'potato':'\ud83e\udd54',
  'pouch':'\ud83d\udc5d',
  'poultry_leg':'\ud83c\udf57',
  'pound':'\ud83d\udcb7',
  'rage':'\ud83d\ude21',
  'pouting_cat':'\ud83d\ude3e',
  'pouting_man':'\ud83d\ude4e&zwj;\u2642\ufe0f',
  'pray':'\ud83d\ude4f',
  'prayer_beads':'\ud83d\udcff',
  'pregnant_woman':'\ud83e\udd30',
  'previous_track_button':'\u23ee',
  'prince':'\ud83e\udd34',
  'princess':'\ud83d\udc78',
  'printer':'\ud83d\udda8',
  'purple_heart':'\ud83d\udc9c',
  'purse':'\ud83d\udc5b',
  'pushpin':'\ud83d\udccc',
  'put_litter_in_its_place':'\ud83d\udeae',
  'question':'\u2753',
  'rabbit':'\ud83d\udc30',
  'rabbit2':'\ud83d\udc07',
  'racehorse':'\ud83d\udc0e',
  'racing_car':'\ud83c\udfce',
  'radio':'\ud83d\udcfb',
  'radio_button':'\ud83d\udd18',
  'radioactive':'\u2622\ufe0f',
  'railway_car':'\ud83d\ude83',
  'railway_track':'\ud83d\udee4',
  'rainbow':'\ud83c\udf08',
  'rainbow_flag':'\ud83c\udff3\ufe0f&zwj;\ud83c\udf08',
  'raised_back_of_hand':'\ud83e\udd1a',
  'raised_hand_with_fingers_splayed':'\ud83d\udd90',
  'raised_hands':'\ud83d\ude4c',
  'raising_hand_woman':'\ud83d\ude4b',
  'raising_hand_man':'\ud83d\ude4b&zwj;\u2642\ufe0f',
  'ram':'\ud83d\udc0f',
  'ramen':'\ud83c\udf5c',
  'rat':'\ud83d\udc00',
  'record_button':'\u23fa',
  'recycle':'\u267b\ufe0f',
  'red_circle':'\ud83d\udd34',
  'registered':'\u00ae\ufe0f',
  'relaxed':'\u263a\ufe0f',
  'relieved':'\ud83d\ude0c',
  'reminder_ribbon':'\ud83c\udf97',
  'repeat':'\ud83d\udd01',
  'repeat_one':'\ud83d\udd02',
  'rescue_worker_helmet':'\u26d1',
  'restroom':'\ud83d\udebb',
  'revolving_hearts':'\ud83d\udc9e',
  'rewind':'\u23ea',
  'rhinoceros':'\ud83e\udd8f',
  'ribbon':'\ud83c\udf80',
  'rice':'\ud83c\udf5a',
  'rice_ball':'\ud83c\udf59',
  'rice_cracker':'\ud83c\udf58',
  'rice_scene':'\ud83c\udf91',
  'right_anger_bubble':'\ud83d\uddef',
  'ring':'\ud83d\udc8d',
  'robot':'\ud83e\udd16',
  'rocket':'\ud83d\ude80',
  'rofl':'\ud83e\udd23',
  'roll_eyes':'\ud83d\ude44',
  'roller_coaster':'\ud83c\udfa2',
  'rooster':'\ud83d\udc13',
  'rose':'\ud83c\udf39',
  'rosette':'\ud83c\udff5',
  'rotating_light':'\ud83d\udea8',
  'round_pushpin':'\ud83d\udccd',
  'rowing_man':'\ud83d\udea3',
  'rowing_woman':'\ud83d\udea3&zwj;\u2640\ufe0f',
  'rugby_football':'\ud83c\udfc9',
  'running_man':'\ud83c\udfc3',
  'running_shirt_with_sash':'\ud83c\udfbd',
  'running_woman':'\ud83c\udfc3&zwj;\u2640\ufe0f',
  'sa':'\ud83c\ude02\ufe0f',
  'sagittarius':'\u2650\ufe0f',
  'sake':'\ud83c\udf76',
  'sandal':'\ud83d\udc61',
  'santa':'\ud83c\udf85',
  'satellite':'\ud83d\udce1',
  'saxophone':'\ud83c\udfb7',
  'school':'\ud83c\udfeb',
  'school_satchel':'\ud83c\udf92',
  'scissors':'\u2702\ufe0f',
  'scorpion':'\ud83e\udd82',
  'scorpius':'\u264f\ufe0f',
  'scream':'\ud83d\ude31',
  'scream_cat':'\ud83d\ude40',
  'scroll':'\ud83d\udcdc',
  'seat':'\ud83d\udcba',
  'secret':'\u3299\ufe0f',
  'see_no_evil':'\ud83d\ude48',
  'seedling':'\ud83c\udf31',
  'selfie':'\ud83e\udd33',
  'shallow_pan_of_food':'\ud83e\udd58',
  'shamrock':'\u2618\ufe0f',
  'shark':'\ud83e\udd88',
  'shaved_ice':'\ud83c\udf67',
  'sheep':'\ud83d\udc11',
  'shell':'\ud83d\udc1a',
  'shield':'\ud83d\udee1',
  'shinto_shrine':'\u26e9',
  'ship':'\ud83d\udea2',
  'shirt':'\ud83d\udc55',
  'shopping':'\ud83d\udecd',
  'shopping_cart':'\ud83d\uded2',
  'shower':'\ud83d\udebf',
  'shrimp':'\ud83e\udd90',
  'signal_strength':'\ud83d\udcf6',
  'six_pointed_star':'\ud83d\udd2f',
  'ski':'\ud83c\udfbf',
  'skier':'\u26f7',
  'skull':'\ud83d\udc80',
  'skull_and_crossbones':'\u2620\ufe0f',
  'sleeping':'\ud83d\ude34',
  'sleeping_bed':'\ud83d\udecc',
  'sleepy':'\ud83d\ude2a',
  'slightly_frowning_face':'\ud83d\ude41',
  'slightly_smiling_face':'\ud83d\ude42',
  'slot_machine':'\ud83c\udfb0',
  'small_airplane':'\ud83d\udee9',
  'small_blue_diamond':'\ud83d\udd39',
  'small_orange_diamond':'\ud83d\udd38',
  'small_red_triangle':'\ud83d\udd3a',
  'small_red_triangle_down':'\ud83d\udd3b',
  'smile':'\ud83d\ude04',
  'smile_cat':'\ud83d\ude38',
  'smiley':'\ud83d\ude03',
  'smiley_cat':'\ud83d\ude3a',
  'smiling_imp':'\ud83d\ude08',
  'smirk':'\ud83d\ude0f',
  'smirk_cat':'\ud83d\ude3c',
  'smoking':'\ud83d\udeac',
  'snail':'\ud83d\udc0c',
  'snake':'\ud83d\udc0d',
  'sneezing_face':'\ud83e\udd27',
  'snowboarder':'\ud83c\udfc2',
  'snowflake':'\u2744\ufe0f',
  'snowman':'\u26c4\ufe0f',
  'snowman_with_snow':'\u2603\ufe0f',
  'sob':'\ud83d\ude2d',
  'soccer':'\u26bd\ufe0f',
  'soon':'\ud83d\udd1c',
  'sos':'\ud83c\udd98',
  'sound':'\ud83d\udd09',
  'space_invader':'\ud83d\udc7e',
  'spades':'\u2660\ufe0f',
  'spaghetti':'\ud83c\udf5d',
  'sparkle':'\u2747\ufe0f',
  'sparkler':'\ud83c\udf87',
  'sparkles':'\u2728',
  'sparkling_heart':'\ud83d\udc96',
  'speak_no_evil':'\ud83d\ude4a',
  'speaker':'\ud83d\udd08',
  'speaking_head':'\ud83d\udde3',
  'speech_balloon':'\ud83d\udcac',
  'speedboat':'\ud83d\udea4',
  'spider':'\ud83d\udd77',
  'spider_web':'\ud83d\udd78',
  'spiral_calendar':'\ud83d\uddd3',
  'spiral_notepad':'\ud83d\uddd2',
  'spoon':'\ud83e\udd44',
  'squid':'\ud83e\udd91',
  'stadium':'\ud83c\udfdf',
  'star':'\u2b50\ufe0f',
  'star2':'\ud83c\udf1f',
  'star_and_crescent':'\u262a\ufe0f',
  'star_of_david':'\u2721\ufe0f',
  'stars':'\ud83c\udf20',
  'station':'\ud83d\ude89',
  'statue_of_liberty':'\ud83d\uddfd',
  'steam_locomotive':'\ud83d\ude82',
  'stew':'\ud83c\udf72',
  'stop_button':'\u23f9',
  'stop_sign':'\ud83d\uded1',
  'stopwatch':'\u23f1',
  'straight_ruler':'\ud83d\udccf',
  'strawberry':'\ud83c\udf53',
  'stuck_out_tongue':'\ud83d\ude1b',
  'stuck_out_tongue_closed_eyes':'\ud83d\ude1d',
  'stuck_out_tongue_winking_eye':'\ud83d\ude1c',
  'studio_microphone':'\ud83c\udf99',
  'stuffed_flatbread':'\ud83e\udd59',
  'sun_behind_large_cloud':'\ud83c\udf25',
  'sun_behind_rain_cloud':'\ud83c\udf26',
  'sun_behind_small_cloud':'\ud83c\udf24',
  'sun_with_face':'\ud83c\udf1e',
  'sunflower':'\ud83c\udf3b',
  'sunglasses':'\ud83d\ude0e',
  'sunny':'\u2600\ufe0f',
  'sunrise':'\ud83c\udf05',
  'sunrise_over_mountains':'\ud83c\udf04',
  'surfing_man':'\ud83c\udfc4',
  'surfing_woman':'\ud83c\udfc4&zwj;\u2640\ufe0f',
  'sushi':'\ud83c\udf63',
  'suspension_railway':'\ud83d\ude9f',
  'sweat':'\ud83d\ude13',
  'sweat_drops':'\ud83d\udca6',
  'sweat_smile':'\ud83d\ude05',
  'sweet_potato':'\ud83c\udf60',
  'swimming_man':'\ud83c\udfca',
  'swimming_woman':'\ud83c\udfca&zwj;\u2640\ufe0f',
  'symbols':'\ud83d\udd23',
  'synagogue':'\ud83d\udd4d',
  'syringe':'\ud83d\udc89',
  'taco':'\ud83c\udf2e',
  'tada':'\ud83c\udf89',
  'tanabata_tree':'\ud83c\udf8b',
  'taurus':'\u2649\ufe0f',
  'taxi':'\ud83d\ude95',
  'tea':'\ud83c\udf75',
  'telephone_receiver':'\ud83d\udcde',
  'telescope':'\ud83d\udd2d',
  'tennis':'\ud83c\udfbe',
  'tent':'\u26fa\ufe0f',
  'thermometer':'\ud83c\udf21',
  'thinking':'\ud83e\udd14',
  'thought_balloon':'\ud83d\udcad',
  'ticket':'\ud83c\udfab',
  'tickets':'\ud83c\udf9f',
  'tiger':'\ud83d\udc2f',
  'tiger2':'\ud83d\udc05',
  'timer_clock':'\u23f2',
  'tipping_hand_man':'\ud83d\udc81&zwj;\u2642\ufe0f',
  'tired_face':'\ud83d\ude2b',
  'tm':'\u2122\ufe0f',
  'toilet':'\ud83d\udebd',
  'tokyo_tower':'\ud83d\uddfc',
  'tomato':'\ud83c\udf45',
  'tongue':'\ud83d\udc45',
  'top':'\ud83d\udd1d',
  'tophat':'\ud83c\udfa9',
  'tornado':'\ud83c\udf2a',
  'trackball':'\ud83d\uddb2',
  'tractor':'\ud83d\ude9c',
  'traffic_light':'\ud83d\udea5',
  'train':'\ud83d\ude8b',
  'train2':'\ud83d\ude86',
  'tram':'\ud83d\ude8a',
  'triangular_flag_on_post':'\ud83d\udea9',
  'triangular_ruler':'\ud83d\udcd0',
  'trident':'\ud83d\udd31',
  'triumph':'\ud83d\ude24',
  'trolleybus':'\ud83d\ude8e',
  'trophy':'\ud83c\udfc6',
  'tropical_drink':'\ud83c\udf79',
  'tropical_fish':'\ud83d\udc20',
  'truck':'\ud83d\ude9a',
  'trumpet':'\ud83c\udfba',
  'tulip':'\ud83c\udf37',
  'tumbler_glass':'\ud83e\udd43',
  'turkey':'\ud83e\udd83',
  'turtle':'\ud83d\udc22',
  'tv':'\ud83d\udcfa',
  'twisted_rightwards_arrows':'\ud83d\udd00',
  'two_hearts':'\ud83d\udc95',
  'two_men_holding_hands':'\ud83d\udc6c',
  'two_women_holding_hands':'\ud83d\udc6d',
  'u5272':'\ud83c\ude39',
  'u5408':'\ud83c\ude34',
  'u55b6':'\ud83c\ude3a',
  'u6307':'\ud83c\ude2f\ufe0f',
  'u6708':'\ud83c\ude37\ufe0f',
  'u6709':'\ud83c\ude36',
  'u6e80':'\ud83c\ude35',
  'u7121':'\ud83c\ude1a\ufe0f',
  'u7533':'\ud83c\ude38',
  'u7981':'\ud83c\ude32',
  'u7a7a':'\ud83c\ude33',
  'umbrella':'\u2614\ufe0f',
  'unamused':'\ud83d\ude12',
  'underage':'\ud83d\udd1e',
  'unicorn':'\ud83e\udd84',
  'unlock':'\ud83d\udd13',
  'up':'\ud83c\udd99',
  'upside_down_face':'\ud83d\ude43',
  'v':'\u270c\ufe0f',
  'vertical_traffic_light':'\ud83d\udea6',
  'vhs':'\ud83d\udcfc',
  'vibration_mode':'\ud83d\udcf3',
  'video_camera':'\ud83d\udcf9',
  'video_game':'\ud83c\udfae',
  'violin':'\ud83c\udfbb',
  'virgo':'\u264d\ufe0f',
  'volcano':'\ud83c\udf0b',
  'volleyball':'\ud83c\udfd0',
  'vs':'\ud83c\udd9a',
  'vulcan_salute':'\ud83d\udd96',
  'walking_man':'\ud83d\udeb6',
  'walking_woman':'\ud83d\udeb6&zwj;\u2640\ufe0f',
  'waning_crescent_moon':'\ud83c\udf18',
  'waning_gibbous_moon':'\ud83c\udf16',
  'warning':'\u26a0\ufe0f',
  'wastebasket':'\ud83d\uddd1',
  'watch':'\u231a\ufe0f',
  'water_buffalo':'\ud83d\udc03',
  'watermelon':'\ud83c\udf49',
  'wave':'\ud83d\udc4b',
  'wavy_dash':'\u3030\ufe0f',
  'waxing_crescent_moon':'\ud83c\udf12',
  'wc':'\ud83d\udebe',
  'weary':'\ud83d\ude29',
  'wedding':'\ud83d\udc92',
  'weight_lifting_man':'\ud83c\udfcb\ufe0f',
  'weight_lifting_woman':'\ud83c\udfcb\ufe0f&zwj;\u2640\ufe0f',
  'whale':'\ud83d\udc33',
  'whale2':'\ud83d\udc0b',
  'wheel_of_dharma':'\u2638\ufe0f',
  'wheelchair':'\u267f\ufe0f',
  'white_check_mark':'\u2705',
  'white_circle':'\u26aa\ufe0f',
  'white_flag':'\ud83c\udff3\ufe0f',
  'white_flower':'\ud83d\udcae',
  'white_large_square':'\u2b1c\ufe0f',
  'white_medium_small_square':'\u25fd\ufe0f',
  'white_medium_square':'\u25fb\ufe0f',
  'white_small_square':'\u25ab\ufe0f',
  'white_square_button':'\ud83d\udd33',
  'wilted_flower':'\ud83e\udd40',
  'wind_chime':'\ud83c\udf90',
  'wind_face':'\ud83c\udf2c',
  'wine_glass':'\ud83c\udf77',
  'wink':'\ud83d\ude09',
  'wolf':'\ud83d\udc3a',
  'woman':'\ud83d\udc69',
  'woman_artist':'\ud83d\udc69&zwj;\ud83c\udfa8',
  'woman_astronaut':'\ud83d\udc69&zwj;\ud83d\ude80',
  'woman_cartwheeling':'\ud83e\udd38&zwj;\u2640\ufe0f',
  'woman_cook':'\ud83d\udc69&zwj;\ud83c\udf73',
  'woman_facepalming':'\ud83e\udd26&zwj;\u2640\ufe0f',
  'woman_factory_worker':'\ud83d\udc69&zwj;\ud83c\udfed',
  'woman_farmer':'\ud83d\udc69&zwj;\ud83c\udf3e',
  'woman_firefighter':'\ud83d\udc69&zwj;\ud83d\ude92',
  'woman_health_worker':'\ud83d\udc69&zwj;\u2695\ufe0f',
  'woman_judge':'\ud83d\udc69&zwj;\u2696\ufe0f',
  'woman_juggling':'\ud83e\udd39&zwj;\u2640\ufe0f',
  'woman_mechanic':'\ud83d\udc69&zwj;\ud83d\udd27',
  'woman_office_worker':'\ud83d\udc69&zwj;\ud83d\udcbc',
  'woman_pilot':'\ud83d\udc69&zwj;\u2708\ufe0f',
  'woman_playing_handball':'\ud83e\udd3e&zwj;\u2640\ufe0f',
  'woman_playing_water_polo':'\ud83e\udd3d&zwj;\u2640\ufe0f',
  'woman_scientist':'\ud83d\udc69&zwj;\ud83d\udd2c',
  'woman_shrugging':'\ud83e\udd37&zwj;\u2640\ufe0f',
  'woman_singer':'\ud83d\udc69&zwj;\ud83c\udfa4',
  'woman_student':'\ud83d\udc69&zwj;\ud83c\udf93',
  'woman_teacher':'\ud83d\udc69&zwj;\ud83c\udfeb',
  'woman_technologist':'\ud83d\udc69&zwj;\ud83d\udcbb',
  'woman_with_turban':'\ud83d\udc73&zwj;\u2640\ufe0f',
  'womans_clothes':'\ud83d\udc5a',
  'womans_hat':'\ud83d\udc52',
  'women_wrestling':'\ud83e\udd3c&zwj;\u2640\ufe0f',
  'womens':'\ud83d\udeba',
  'world_map':'\ud83d\uddfa',
  'worried':'\ud83d\ude1f',
  'wrench':'\ud83d\udd27',
  'writing_hand':'\u270d\ufe0f',
  'x':'\u274c',
  'yellow_heart':'\ud83d\udc9b',
  'yen':'\ud83d\udcb4',
  'yin_yang':'\u262f\ufe0f',
  'yum':'\ud83d\ude0b',
  'zap':'\u26a1\ufe0f',
  'zipper_mouth_face':'\ud83e\udd10',
  'zzz':'\ud83d\udca4',

  /* special emojis :P */
  'octocat':  '<img alt=":octocat:" height="20" width="20" align="absmiddle" src="https://assets-cdn.github.com/images/icons/emoji/octocat.png">',
  'showdown': '<span style="font-family: \'Anonymous Pro\', monospace; text-decoration: underline; text-decoration-style: dashed; text-decoration-color: #3e8b8a;text-underline-position: under;">S</span>'
};

/**
 * Created by Estevao on 31-05-2015.
 */

/**
 * Showdown Converter class
 * @class
 * @param {object} [converterOptions]
 * @returns {Converter}
 */
showdown.Converter = function (converterOptions) {
  'use strict';

  var
      /**
       * Options used by this converter
       * @private
       * @type {{}}
       */
      options = {},

      /**
       * Language extensions used by this converter
       * @private
       * @type {Array}
       */
      langExtensions = [],

      /**
       * Output modifiers extensions used by this converter
       * @private
       * @type {Array}
       */
      outputModifiers = [],

      /**
       * Event listeners
       * @private
       * @type {{}}
       */
      listeners = {},

      /**
       * The flavor set in this converter
       */
      setConvFlavor = setFlavor,

      /**
       * Metadata of the document
       * @type {{parsed: {}, raw: string, format: string}}
       */
      metadata = {
        parsed: {},
        raw: '',
        format: ''
      };

  _constructor();

  /**
   * Converter constructor
   * @private
   */
  function _constructor () {
    converterOptions = converterOptions || {};

    for (var gOpt in globalOptions) {
      if (globalOptions.hasOwnProperty(gOpt)) {
        options[gOpt] = globalOptions[gOpt];
      }
    }

    // Merge options
    if (typeof converterOptions === 'object') {
      for (var opt in converterOptions) {
        if (converterOptions.hasOwnProperty(opt)) {
          options[opt] = converterOptions[opt];
        }
      }
    } else {
      throw Error('Converter expects the passed parameter to be an object, but ' + typeof converterOptions +
      ' was passed instead.');
    }

    if (options.extensions) {
      showdown.helper.forEach(options.extensions, _parseExtension);
    }
  }

  /**
   * Parse extension
   * @param {*} ext
   * @param {string} [name='']
   * @private
   */
  function _parseExtension (ext, name) {

    name = name || null;
    // If it's a string, the extension was previously loaded
    if (showdown.helper.isString(ext)) {
      ext = showdown.helper.stdExtName(ext);
      name = ext;

      // LEGACY_SUPPORT CODE
      if (showdown.extensions[ext]) {
        console.warn('DEPRECATION WARNING: ' + ext + ' is an old extension that uses a deprecated loading method.' +
          'Please inform the developer that the extension should be updated!');
        legacyExtensionLoading(showdown.extensions[ext], ext);
        return;
        // END LEGACY SUPPORT CODE

      } else if (!showdown.helper.isUndefined(extensions[ext])) {
        ext = extensions[ext];

      } else {
        throw Error('Extension "' + ext + '" could not be loaded. It was either not found or is not a valid extension.');
      }
    }

    if (typeof ext === 'function') {
      ext = ext();
    }

    if (!showdown.helper.isArray(ext)) {
      ext = [ext];
    }

    var validExt = validate(ext, name);
    if (!validExt.valid) {
      throw Error(validExt.error);
    }

    for (var i = 0; i < ext.length; ++i) {
      switch (ext[i].type) {

        case 'lang':
          langExtensions.push(ext[i]);
          break;

        case 'output':
          outputModifiers.push(ext[i]);
          break;
      }
      if (ext[i].hasOwnProperty('listeners')) {
        for (var ln in ext[i].listeners) {
          if (ext[i].listeners.hasOwnProperty(ln)) {
            listen(ln, ext[i].listeners[ln]);
          }
        }
      }
    }

  }

  /**
   * LEGACY_SUPPORT
   * @param {*} ext
   * @param {string} name
   */
  function legacyExtensionLoading (ext, name) {
    if (typeof ext === 'function') {
      ext = ext(new showdown.Converter());
    }
    if (!showdown.helper.isArray(ext)) {
      ext = [ext];
    }
    var valid = validate(ext, name);

    if (!valid.valid) {
      throw Error(valid.error);
    }

    for (var i = 0; i < ext.length; ++i) {
      switch (ext[i].type) {
        case 'lang':
          langExtensions.push(ext[i]);
          break;
        case 'output':
          outputModifiers.push(ext[i]);
          break;
        default:// should never reach here
          throw Error('Extension loader error: Type unrecognized!!!');
      }
    }
  }

  /**
   * Listen to an event
   * @param {string} name
   * @param {function} callback
   */
  function listen (name, callback) {
    if (!showdown.helper.isString(name)) {
      throw Error('Invalid argument in converter.listen() method: name must be a string, but ' + typeof name + ' given');
    }

    if (typeof callback !== 'function') {
      throw Error('Invalid argument in converter.listen() method: callback must be a function, but ' + typeof callback + ' given');
    }

    if (!listeners.hasOwnProperty(name)) {
      listeners[name] = [];
    }
    listeners[name].push(callback);
  }

  function rTrimInputText (text) {
    var rsp = text.match(/^\s*/)[0].length,
        rgx = new RegExp('^\\s{0,' + rsp + '}', 'gm');
    return text.replace(rgx, '');
  }

  /**
   * Dispatch an event
   * @private
   * @param {string} evtName Event name
   * @param {string} text Text
   * @param {{}} options Converter Options
   * @param {{}} globals
   * @returns {string}
   */
  this._dispatch = function dispatch (evtName, text, options, globals) {
    if (listeners.hasOwnProperty(evtName)) {
      for (var ei = 0; ei < listeners[evtName].length; ++ei) {
        var nText = listeners[evtName][ei](evtName, text, this, options, globals);
        if (nText && typeof nText !== 'undefined') {
          text = nText;
        }
      }
    }
    return text;
  };

  /**
   * Listen to an event
   * @param {string} name
   * @param {function} callback
   * @returns {showdown.Converter}
   */
  this.listen = function (name, callback) {
    listen(name, callback);
    return this;
  };

  /**
   * Converts a markdown string into HTML
   * @param {string} text
   * @returns {*}
   */
  this.makeHtml = function (text) {
    //check if text is not falsy
    if (!text) {
      return text;
    }

    var globals = {
      gHtmlBlocks:     [],
      gHtmlMdBlocks:   [],
      gHtmlSpans:      [],
      gUrls:           {},
      gTitles:         {},
      gDimensions:     {},
      gListLevel:      0,
      hashLinkCounts:  {},
      langExtensions:  langExtensions,
      outputModifiers: outputModifiers,
      converter:       this,
      ghCodeBlocks:    [],
      metadata: {
        parsed: {},
        raw: '',
        format: ''
      }
    };

    // This lets us use ¨ trema as an escape char to avoid md5 hashes
    // The choice of character is arbitrary; anything that isn't
    // magic in Markdown will work.
    text = text.replace(/¨/g, '¨T');

    // Replace $ with ¨D
    // RegExp interprets $ as a special character
    // when it's in a replacement string
    text = text.replace(/\$/g, '¨D');

    // Standardize line endings
    text = text.replace(/\r\n/g, '\n'); // DOS to Unix
    text = text.replace(/\r/g, '\n'); // Mac to Unix

    // Stardardize line spaces
    text = text.replace(/\u00A0/g, '&nbsp;');

    if (options.smartIndentationFix) {
      text = rTrimInputText(text);
    }

    // Make sure text begins and ends with a couple of newlines:
    text = '\n\n' + text + '\n\n';

    // detab
    text = showdown.subParser('detab')(text, options, globals);

    /**
     * Strip any lines consisting only of spaces and tabs.
     * This makes subsequent regexs easier to write, because we can
     * match consecutive blank lines with /\n+/ instead of something
     * contorted like /[ \t]*\n+/
     */
    text = text.replace(/^[ \t]+$/mg, '');

    //run languageExtensions
    showdown.helper.forEach(langExtensions, function (ext) {
      text = showdown.subParser('runExtension')(ext, text, options, globals);
    });

    // run the sub parsers
    text = showdown.subParser('metadata')(text, options, globals);
    text = showdown.subParser('hashPreCodeTags')(text, options, globals);
    text = showdown.subParser('githubCodeBlocks')(text, options, globals);
    text = showdown.subParser('hashHTMLBlocks')(text, options, globals);
    text = showdown.subParser('hashCodeTags')(text, options, globals);
    text = showdown.subParser('stripLinkDefinitions')(text, options, globals);
    text = showdown.subParser('blockGamut')(text, options, globals);
    text = showdown.subParser('unhashHTMLSpans')(text, options, globals);
    text = showdown.subParser('unescapeSpecialChars')(text, options, globals);

    // attacklab: Restore dollar signs
    text = text.replace(/¨D/g, '$$');

    // attacklab: Restore tremas
    text = text.replace(/¨T/g, '¨');

    // render a complete html document instead of a partial if the option is enabled
    text = showdown.subParser('completeHTMLDocument')(text, options, globals);

    // Run output modifiers
    showdown.helper.forEach(outputModifiers, function (ext) {
      text = showdown.subParser('runExtension')(ext, text, options, globals);
    });

    // update metadata
    metadata = globals.metadata;
    return text;
  };

  /**
   * Converts an HTML string into a markdown string
   * @param src
   * @param [HTMLParser] A WHATWG DOM and HTML parser, such as JSDOM. If none is supplied, window.document will be used.
   * @returns {string}
   */
  this.makeMarkdown = this.makeMd = function (src, HTMLParser) {

    // replace \r\n with \n
    src = src.replace(/\r\n/g, '\n');
    src = src.replace(/\r/g, '\n'); // old macs

    // due to an edge case, we need to find this: > <
    // to prevent removing of non silent white spaces
    // ex: <em>this is</em> <strong>sparta</strong>
    src = src.replace(/>[ \t]+</, '>¨NBSP;<');

    if (!HTMLParser) {
      if (window && window.document) {
        HTMLParser = window.document;
      } else {
        throw new Error('HTMLParser is undefined. If in a webworker or nodejs environment, you need to provide a WHATWG DOM and HTML such as JSDOM');
      }
    }

    var doc = HTMLParser.createElement('div');
    doc.innerHTML = src;

    var globals = {
      preList: substitutePreCodeTags(doc)
    };

    // remove all newlines and collapse spaces
    clean(doc);

    // some stuff, like accidental reference links must now be escaped
    // TODO
    // doc.innerHTML = doc.innerHTML.replace(/\[[\S\t ]]/);

    var nodes = doc.childNodes,
        mdDoc = '';

    for (var i = 0; i < nodes.length; i++) {
      mdDoc += showdown.subParser('makeMarkdown.node')(nodes[i], globals);
    }

    function clean (node) {
      for (var n = 0; n < node.childNodes.length; ++n) {
        var child = node.childNodes[n];
        if (child.nodeType === 3) {
          if (!/\S/.test(child.nodeValue)) {
            node.removeChild(child);
            --n;
          } else {
            child.nodeValue = child.nodeValue.split('\n').join(' ');
            child.nodeValue = child.nodeValue.replace(/(\s)+/g, '$1');
          }
        } else if (child.nodeType === 1) {
          clean(child);
        }
      }
    }

    // find all pre tags and replace contents with placeholder
    // we need this so that we can remove all indentation from html
    // to ease up parsing
    function substitutePreCodeTags (doc) {

      var pres = doc.querySelectorAll('pre'),
          presPH = [];

      for (var i = 0; i < pres.length; ++i) {

        if (pres[i].childElementCount === 1 && pres[i].firstChild.tagName.toLowerCase() === 'code') {
          var content = pres[i].firstChild.innerHTML.trim(),
              language = pres[i].firstChild.getAttribute('data-language') || '';

          // if data-language attribute is not defined, then we look for class language-*
          if (language === '') {
            var classes = pres[i].firstChild.className.split(' ');
            for (var c = 0; c < classes.length; ++c) {
              var matches = classes[c].match(/^language-(.+)$/);
              if (matches !== null) {
                language = matches[1];
                break;
              }
            }
          }

          // unescape html entities in content
          content = showdown.helper.unescapeHTMLEntities(content);

          presPH.push(content);
          pres[i].outerHTML = '<precode language="' + language + '" precodenum="' + i.toString() + '"></precode>';
        } else {
          presPH.push(pres[i].innerHTML);
          pres[i].innerHTML = '';
          pres[i].setAttribute('prenum', i.toString());
        }
      }
      return presPH;
    }

    return mdDoc;
  };

  /**
   * Set an option of this Converter instance
   * @param {string} key
   * @param {*} value
   */
  this.setOption = function (key, value) {
    options[key] = value;
  };

  /**
   * Get the option of this Converter instance
   * @param {string} key
   * @returns {*}
   */
  this.getOption = function (key) {
    return options[key];
  };

  /**
   * Get the options of this Converter instance
   * @returns {{}}
   */
  this.getOptions = function () {
    return options;
  };

  /**
   * Add extension to THIS converter
   * @param {{}} extension
   * @param {string} [name=null]
   */
  this.addExtension = function (extension, name) {
    name = name || null;
    _parseExtension(extension, name);
  };

  /**
   * Use a global registered extension with THIS converter
   * @param {string} extensionName Name of the previously registered extension
   */
  this.useExtension = function (extensionName) {
    _parseExtension(extensionName);
  };

  /**
   * Set the flavor THIS converter should use
   * @param {string} name
   */
  this.setFlavor = function (name) {
    if (!flavor.hasOwnProperty(name)) {
      throw Error(name + ' flavor was not found');
    }
    var preset = flavor[name];
    setConvFlavor = name;
    for (var option in preset) {
      if (preset.hasOwnProperty(option)) {
        options[option] = preset[option];
      }
    }
  };

  /**
   * Get the currently set flavor of this converter
   * @returns {string}
   */
  this.getFlavor = function () {
    return setConvFlavor;
  };

  /**
   * Remove an extension from THIS converter.
   * Note: This is a costly operation. It's better to initialize a new converter
   * and specify the extensions you wish to use
   * @param {Array} extension
   */
  this.removeExtension = function (extension) {
    if (!showdown.helper.isArray(extension)) {
      extension = [extension];
    }
    for (var a = 0; a < extension.length; ++a) {
      var ext = extension[a];
      for (var i = 0; i < langExtensions.length; ++i) {
        if (langExtensions[i] === ext) {
          langExtensions[i].splice(i, 1);
        }
      }
      for (var ii = 0; ii < outputModifiers.length; ++i) {
        if (outputModifiers[ii] === ext) {
          outputModifiers[ii].splice(i, 1);
        }
      }
    }
  };

  /**
   * Get all extension of THIS converter
   * @returns {{language: Array, output: Array}}
   */
  this.getAllExtensions = function () {
    return {
      language: langExtensions,
      output: outputModifiers
    };
  };

  /**
   * Get the metadata of the previously parsed document
   * @param raw
   * @returns {string|{}}
   */
  this.getMetadata = function (raw) {
    if (raw) {
      return metadata.raw;
    } else {
      return metadata.parsed;
    }
  };

  /**
   * Get the metadata format of the previously parsed document
   * @returns {string}
   */
  this.getMetadataFormat = function () {
    return metadata.format;
  };

  /**
   * Private: set a single key, value metadata pair
   * @param {string} key
   * @param {string} value
   */
  this._setMetadataPair = function (key, value) {
    metadata.parsed[key] = value;
  };

  /**
   * Private: set metadata format
   * @param {string} format
   */
  this._setMetadataFormat = function (format) {
    metadata.format = format;
  };

  /**
   * Private: set metadata raw text
   * @param {string} raw
   */
  this._setMetadataRaw = function (raw) {
    metadata.raw = raw;
  };
};

/**
 * Turn Markdown link shortcuts into XHTML <a> tags.
 */
showdown.subParser('anchors', function (text, options, globals) {
  'use strict';

  text = globals.converter._dispatch('anchors.before', text, options, globals);

  var writeAnchorTag = function (wholeMatch, linkText, linkId, url, m5, m6, title) {
    if (showdown.helper.isUndefined(title)) {
      title = '';
    }
    linkId = linkId.toLowerCase();

    // Special case for explicit empty url
    if (wholeMatch.search(/\(<?\s*>? ?(['"].*['"])?\)$/m) > -1) {
      url = '';
    } else if (!url) {
      if (!linkId) {
        // lower-case and turn embedded newlines into spaces
        linkId = linkText.toLowerCase().replace(/ ?\n/g, ' ');
      }
      url = '#' + linkId;

      if (!showdown.helper.isUndefined(globals.gUrls[linkId])) {
        url = globals.gUrls[linkId];
        if (!showdown.helper.isUndefined(globals.gTitles[linkId])) {
          title = globals.gTitles[linkId];
        }
      } else {
        return wholeMatch;
      }
    }

    //url = showdown.helper.escapeCharacters(url, '*_', false); // replaced line to improve performance
    url = url.replace(showdown.helper.regexes.asteriskDashAndColon, showdown.helper.escapeCharactersCallback);

    var result = '<a href="' + url + '"';

    if (title !== '' && title !== null) {
      title = title.replace(/"/g, '&quot;');
      //title = showdown.helper.escapeCharacters(title, '*_', false); // replaced line to improve performance
      title = title.replace(showdown.helper.regexes.asteriskDashAndColon, showdown.helper.escapeCharactersCallback);
      result += ' title="' + title + '"';
    }

    // optionLinksInNewWindow only applies
    // to external links. Hash links (#) open in same page
    if (options.openLinksInNewWindow && !/^#/.test(url)) {
      // escaped _
      result += ' rel="noopener noreferrer" target="¨E95Eblank"';
    }

    result += '>' + linkText + '</a>';

    return result;
  };

  // First, handle reference-style links: [link text] [id]
  text = text.replace(/\[((?:\[[^\]]*]|[^\[\]])*)] ?(?:\n *)?\[(.*?)]()()()()/g, writeAnchorTag);

  // Next, inline-style links: [link text](url "optional title")
  // cases with crazy urls like ./image/cat1).png
  text = text.replace(/\[((?:\[[^\]]*]|[^\[\]])*)]()[ \t]*\([ \t]?<([^>]*)>(?:[ \t]*((["'])([^"]*?)\5))?[ \t]?\)/g,
    writeAnchorTag);

  // normal cases
  text = text.replace(/\[((?:\[[^\]]*]|[^\[\]])*)]()[ \t]*\([ \t]?<?([\S]+?(?:\([\S]*?\)[\S]*?)?)>?(?:[ \t]*((["'])([^"]*?)\5))?[ \t]?\)/g,
    writeAnchorTag);

  // handle reference-style shortcuts: [link text]
  // These must come last in case you've also got [link test][1]
  // or [link test](/foo)
  text = text.replace(/\[([^\[\]]+)]()()()()()/g, writeAnchorTag);

  // Lastly handle GithubMentions if option is enabled
  if (options.ghMentions) {
    text = text.replace(/(^|\s)(\\)?(@([a-z\d]+(?:[a-z\d.-]+?[a-z\d]+)*))/gmi, function (wm, st, escape, mentions, username) {
      if (escape === '\\') {
        return st + mentions;
      }

      //check if options.ghMentionsLink is a string
      if (!showdown.helper.isString(options.ghMentionsLink)) {
        throw new Error('ghMentionsLink option must be a string');
      }
      var lnk = options.ghMentionsLink.replace(/\{u}/g, username),
          target = '';
      if (options.openLinksInNewWindow) {
        target = ' rel="noopener noreferrer" target="¨E95Eblank"';
      }
      return st + '<a href="' + lnk + '"' + target + '>' + mentions + '</a>';
    });
  }

  text = globals.converter._dispatch('anchors.after', text, options, globals);
  return text;
});

// url allowed chars [a-z\d_.~:/?#[]@!$&'()*+,;=-]

var simpleURLRegex  = /([*~_]+|\b)(((https?|ftp|dict):\/\/|www\.)[^'">\s]+?\.[^'">\s]+?)()(\1)?(?=\s|$)(?!["<>])/gi,
    simpleURLRegex2 = /([*~_]+|\b)(((https?|ftp|dict):\/\/|www\.)[^'">\s]+\.[^'">\s]+?)([.!?,()\[\]])?(\1)?(?=\s|$)(?!["<>])/gi,
    delimUrlRegex   = /()<(((https?|ftp|dict):\/\/|www\.)[^'">\s]+)()>()/gi,
    simpleMailRegex = /(^|\s)(?:mailto:)?([A-Za-z0-9!#$%&'*+-/=?^_`{|}~.]+@[-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+)(?=$|\s)/gmi,
    delimMailRegex  = /<()(?:mailto:)?([-.\w]+@[-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+)>/gi,

    replaceLink = function (options) {
      'use strict';
      return function (wm, leadingMagicChars, link, m2, m3, trailingPunctuation, trailingMagicChars) {
        link = link.replace(showdown.helper.regexes.asteriskDashAndColon, showdown.helper.escapeCharactersCallback);
        var lnkTxt = link,
            append = '',
            target = '',
            lmc    = leadingMagicChars || '',
            tmc    = trailingMagicChars || '';
        if (/^www\./i.test(link)) {
          link = link.replace(/^www\./i, 'http://www.');
        }
        if (options.excludeTrailingPunctuationFromURLs && trailingPunctuation) {
          append = trailingPunctuation;
        }
        if (options.openLinksInNewWindow) {
          target = ' rel="noopener noreferrer" target="¨E95Eblank"';
        }
        return lmc + '<a href="' + link + '"' + target + '>' + lnkTxt + '</a>' + append + tmc;
      };
    },

    replaceMail = function (options, globals) {
      'use strict';
      return function (wholeMatch, b, mail) {
        var href = 'mailto:';
        b = b || '';
        mail = showdown.subParser('unescapeSpecialChars')(mail, options, globals);
        if (options.encodeEmails) {
          href = showdown.helper.encodeEmailAddress(href + mail);
          mail = showdown.helper.encodeEmailAddress(mail);
        } else {
          href = href + mail;
        }
        return b + '<a href="' + href + '">' + mail + '</a>';
      };
    };

showdown.subParser('autoLinks', function (text, options, globals) {
  'use strict';

  text = globals.converter._dispatch('autoLinks.before', text, options, globals);

  text = text.replace(delimUrlRegex, replaceLink(options));
  text = text.replace(delimMailRegex, replaceMail(options, globals));

  text = globals.converter._dispatch('autoLinks.after', text, options, globals);

  return text;
});

showdown.subParser('simplifiedAutoLinks', function (text, options, globals) {
  'use strict';

  if (!options.simplifiedAutoLink) {
    return text;
  }

  text = globals.converter._dispatch('simplifiedAutoLinks.before', text, options, globals);

  if (options.excludeTrailingPunctuationFromURLs) {
    text = text.replace(simpleURLRegex2, replaceLink(options));
  } else {
    text = text.replace(simpleURLRegex, replaceLink(options));
  }
  text = text.replace(simpleMailRegex, replaceMail(options, globals));

  text = globals.converter._dispatch('simplifiedAutoLinks.after', text, options, globals);

  return text;
});

/**
 * These are all the transformations that form block-level
 * tags like paragraphs, headers, and list items.
 */
showdown.subParser('blockGamut', function (text, options, globals) {
  'use strict';

  text = globals.converter._dispatch('blockGamut.before', text, options, globals);

  // we parse blockquotes first so that we can have headings and hrs
  // inside blockquotes
  text = showdown.subParser('blockQuotes')(text, options, globals);
  text = showdown.subParser('headers')(text, options, globals);

  // Do Horizontal Rules:
  text = showdown.subParser('horizontalRule')(text, options, globals);

  text = showdown.subParser('lists')(text, options, globals);
  text = showdown.subParser('codeBlocks')(text, options, globals);
  text = showdown.subParser('tables')(text, options, globals);

  // We already ran _HashHTMLBlocks() before, in Markdown(), but that
  // was to escape raw HTML in the original Markdown source. This time,
  // we're escaping the markup we've just created, so that we don't wrap
  // <p> tags around block-level tags.
  text = showdown.subParser('hashHTMLBlocks')(text, options, globals);
  text = showdown.subParser('paragraphs')(text, options, globals);

  text = globals.converter._dispatch('blockGamut.after', text, options, globals);

  return text;
});

showdown.subParser('blockQuotes', function (text, options, globals) {
  'use strict';

  text = globals.converter._dispatch('blockQuotes.before', text, options, globals);

  // add a couple extra lines after the text and endtext mark
  text = text + '\n\n';

  var rgx = /(^ {0,3}>[ \t]?.+\n(.+\n)*\n*)+/gm;

  if (options.splitAdjacentBlockquotes) {
    rgx = /^ {0,3}>[\s\S]*?(?:\n\n)/gm;
  }

  text = text.replace(rgx, function (bq) {
    // attacklab: hack around Konqueror 3.5.4 bug:
    // "----------bug".replace(/^-/g,"") == "bug"
    bq = bq.replace(/^[ \t]*>[ \t]?/gm, ''); // trim one level of quoting

    // attacklab: clean up hack
    bq = bq.replace(/¨0/g, '');

    bq = bq.replace(/^[ \t]+$/gm, ''); // trim whitespace-only lines
    bq = showdown.subParser('githubCodeBlocks')(bq, options, globals);
    bq = showdown.subParser('blockGamut')(bq, options, globals); // recurse

    bq = bq.replace(/(^|\n)/g, '$1  ');
    // These leading spaces screw with <pre> content, so we need to fix that:
    bq = bq.replace(/(\s*<pre>[^\r]+?<\/pre>)/gm, function (wholeMatch, m1) {
      var pre = m1;
      // attacklab: hack around Konqueror 3.5.4 bug:
      pre = pre.replace(/^  /mg, '¨0');
      pre = pre.replace(/¨0/g, '');
      return pre;
    });

    return showdown.subParser('hashBlock')('<blockquote>\n' + bq + '\n</blockquote>', options, globals);
  });

  text = globals.converter._dispatch('blockQuotes.after', text, options, globals);
  return text;
});

/**
 * Process Markdown `<pre><code>` blocks.
 */
showdown.subParser('codeBlocks', function (text, options, globals) {
  'use strict';

  text = globals.converter._dispatch('codeBlocks.before', text, options, globals);

  // sentinel workarounds for lack of \A and \Z, safari\khtml bug
  text += '¨0';

  var pattern = /(?:\n\n|^)((?:(?:[ ]{4}|\t).*\n+)+)(\n*[ ]{0,3}[^ \t\n]|(?=¨0))/g;
  text = text.replace(pattern, function (wholeMatch, m1, m2) {
    var codeblock = m1,
        nextChar = m2,
        end = '\n';

    codeblock = showdown.subParser('outdent')(codeblock, options, globals);
    codeblock = showdown.subParser('encodeCode')(codeblock, options, globals);
    codeblock = showdown.subParser('detab')(codeblock, options, globals);
    codeblock = codeblock.replace(/^\n+/g, ''); // trim leading newlines
    codeblock = codeblock.replace(/\n+$/g, ''); // trim trailing newlines

    if (options.omitExtraWLInCodeBlocks) {
      end = '';
    }

    codeblock = '<pre><code>' + codeblock + end + '</code></pre>';

    return showdown.subParser('hashBlock')(codeblock, options, globals) + nextChar;
  });

  // strip sentinel
  text = text.replace(/¨0/, '');

  text = globals.converter._dispatch('codeBlocks.after', text, options, globals);
  return text;
});

/**
 *
 *   *  Backtick quotes are used for <code></code> spans.
 *
 *   *  You can use multiple backticks as the delimiters if you want to
 *     include literal backticks in the code span. So, this input:
 *
 *         Just type ``foo `bar` baz`` at the prompt.
 *
 *       Will translate to:
 *
 *         <p>Just type <code>foo `bar` baz</code> at the prompt.</p>
 *
 *    There's no arbitrary limit to the number of backticks you
 *    can use as delimters. If you need three consecutive backticks
 *    in your code, use four for delimiters, etc.
 *
 *  *  You can use spaces to get literal backticks at the edges:
 *
 *         ... type `` `bar` `` ...
 *
 *       Turns to:
 *
 *         ... type <code>`bar`</code> ...
 */
showdown.subParser('codeSpans', function (text, options, globals) {
  'use strict';

  text = globals.converter._dispatch('codeSpans.before', text, options, globals);

  if (typeof text === 'undefined') {
    text = '';
  }
  text = text.replace(/(^|[^\\])(`+)([^\r]*?[^`])\2(?!`)/gm,
    function (wholeMatch, m1, m2, m3) {
      var c = m3;
      c = c.replace(/^([ \t]*)/g, '');	// leading whitespace
      c = c.replace(/[ \t]*$/g, '');	// trailing whitespace
      c = showdown.subParser('encodeCode')(c, options, globals);
      c = m1 + '<code>' + c + '</code>';
      c = showdown.subParser('hashHTMLSpans')(c, options, globals);
      return c;
    }
  );

  text = globals.converter._dispatch('codeSpans.after', text, options, globals);
  return text;
});

/**
 * Create a full HTML document from the processed markdown
 */
showdown.subParser('completeHTMLDocument', function (text, options, globals) {
  'use strict';

  if (!options.completeHTMLDocument) {
    return text;
  }

  text = globals.converter._dispatch('completeHTMLDocument.before', text, options, globals);

  var doctype = 'html',
      doctypeParsed = '<!DOCTYPE HTML>\n',
      title = '',
      charset = '<meta charset="utf-8">\n',
      lang = '',
      metadata = '';

  if (typeof globals.metadata.parsed.doctype !== 'undefined') {
    doctypeParsed = '<!DOCTYPE ' +  globals.metadata.parsed.doctype + '>\n';
    doctype = globals.metadata.parsed.doctype.toString().toLowerCase();
    if (doctype === 'html' || doctype === 'html5') {
      charset = '<meta charset="utf-8">';
    }
  }

  for (var meta in globals.metadata.parsed) {
    if (globals.metadata.parsed.hasOwnProperty(meta)) {
      switch (meta.toLowerCase()) {
        case 'doctype':
          break;

        case 'title':
          title = '<title>' +  globals.metadata.parsed.title + '</title>\n';
          break;

        case 'charset':
          if (doctype === 'html' || doctype === 'html5') {
            charset = '<meta charset="' + globals.metadata.parsed.charset + '">\n';
          } else {
            charset = '<meta name="charset" content="' + globals.metadata.parsed.charset + '">\n';
          }
          break;

        case 'language':
        case 'lang':
          lang = ' lang="' + globals.metadata.parsed[meta] + '"';
          metadata += '<meta name="' + meta + '" content="' + globals.metadata.parsed[meta] + '">\n';
          break;

        default:
          metadata += '<meta name="' + meta + '" content="' + globals.metadata.parsed[meta] + '">\n';
      }
    }
  }

  text = doctypeParsed + '<html' + lang + '>\n<head>\n' + title + charset + metadata + '</head>\n<body>\n' + text.trim() + '\n</body>\n</html>';

  text = globals.converter._dispatch('completeHTMLDocument.after', text, options, globals);
  return text;
});

/**
 * Convert all tabs to spaces
 */
showdown.subParser('detab', function (text, options, globals) {
  'use strict';
  text = globals.converter._dispatch('detab.before', text, options, globals);

  // expand first n-1 tabs
  text = text.replace(/\t(?=\t)/g, '    '); // g_tab_width

  // replace the nth with two sentinels
  text = text.replace(/\t/g, '¨A¨B');

  // use the sentinel to anchor our regex so it doesn't explode
  text = text.replace(/¨B(.+?)¨A/g, function (wholeMatch, m1) {
    var leadingText = m1,
        numSpaces = 4 - leadingText.length % 4;  // g_tab_width

    // there *must* be a better way to do this:
    for (var i = 0; i < numSpaces; i++) {
      leadingText += ' ';
    }

    return leadingText;
  });

  // clean up sentinels
  text = text.replace(/¨A/g, '    ');  // g_tab_width
  text = text.replace(/¨B/g, '');

  text = globals.converter._dispatch('detab.after', text, options, globals);
  return text;
});

showdown.subParser('ellipsis', function (text, options, globals) {
  'use strict';

  text = globals.converter._dispatch('ellipsis.before', text, options, globals);

  text = text.replace(/\.\.\./g, '…');

  text = globals.converter._dispatch('ellipsis.after', text, options, globals);

  return text;
});

/**
 * Turn emoji codes into emojis
 *
 * List of supported emojis: https://github.com/showdownjs/showdown/wiki/Emojis
 */
showdown.subParser('emoji', function (text, options, globals) {
  'use strict';

  if (!options.emoji) {
    return text;
  }

  text = globals.converter._dispatch('emoji.before', text, options, globals);

  var emojiRgx = /:([\S]+?):/g;

  text = text.replace(emojiRgx, function (wm, emojiCode) {
    if (showdown.helper.emojis.hasOwnProperty(emojiCode)) {
      return showdown.helper.emojis[emojiCode];
    }
    return wm;
  });

  text = globals.converter._dispatch('emoji.after', text, options, globals);

  return text;
});

/**
 * Smart processing for ampersands and angle brackets that need to be encoded.
 */
showdown.subParser('encodeAmpsAndAngles', function (text, options, globals) {
  'use strict';
  text = globals.converter._dispatch('encodeAmpsAndAngles.before', text, options, globals);

  // Ampersand-encoding based entirely on Nat Irons's Amputator MT plugin:
  // http://bumppo.net/projects/amputator/
  text = text.replace(/&(?!#?[xX]?(?:[0-9a-fA-F]+|\w+);)/g, '&amp;');

  // Encode naked <'s
  text = text.replace(/<(?![a-z\/?$!])/gi, '&lt;');

  // Encode <
  text = text.replace(/</g, '&lt;');

  // Encode >
  text = text.replace(/>/g, '&gt;');

  text = globals.converter._dispatch('encodeAmpsAndAngles.after', text, options, globals);
  return text;
});

/**
 * Returns the string, with after processing the following backslash escape sequences.
 *
 * attacklab: The polite way to do this is with the new escapeCharacters() function:
 *
 *    text = escapeCharacters(text,"\\",true);
 *    text = escapeCharacters(text,"`*_{}[]()>#+-.!",true);
 *
 * ...but we're sidestepping its use of the (slow) RegExp constructor
 * as an optimization for Firefox.  This function gets called a LOT.
 */
showdown.subParser('encodeBackslashEscapes', function (text, options, globals) {
  'use strict';
  text = globals.converter._dispatch('encodeBackslashEscapes.before', text, options, globals);

  text = text.replace(/\\(\\)/g, showdown.helper.escapeCharactersCallback);
  text = text.replace(/\\([`*_{}\[\]()>#+.!~=|-])/g, showdown.helper.escapeCharactersCallback);

  text = globals.converter._dispatch('encodeBackslashEscapes.after', text, options, globals);
  return text;
});

/**
 * Encode/escape certain characters inside Markdown code runs.
 * The point is that in code, these characters are literals,
 * and lose their special Markdown meanings.
 */
showdown.subParser('encodeCode', function (text, options, globals) {
  'use strict';

  text = globals.converter._dispatch('encodeCode.before', text, options, globals);

  // Encode all ampersands; HTML entities are not
  // entities within a Markdown code span.
  text = text
    .replace(/&/g, '&amp;')
  // Do the angle bracket song and dance:
    .replace(/</g, '&lt;')
    .replace(/>/g, '&gt;')
  // Now, escape characters that are magic in Markdown:
    .replace(/([*_{}\[\]\\=~-])/g, showdown.helper.escapeCharactersCallback);

  text = globals.converter._dispatch('encodeCode.after', text, options, globals);
  return text;
});

/**
 * Within tags -- meaning between < and > -- encode [\ ` * _ ~ =] so they
 * don't conflict with their use in Markdown for code, italics and strong.
 */
showdown.subParser('escapeSpecialCharsWithinTagAttributes', function (text, options, globals) {
  'use strict';
  text = globals.converter._dispatch('escapeSpecialCharsWithinTagAttributes.before', text, options, globals);

  // Build a regex to find HTML tags.
  var tags     = /<\/?[a-z\d_:-]+(?:[\s]+[\s\S]+?)?>/gi,
      comments = /<!(--(?:(?:[^>-]|-[^>])(?:[^-]|-[^-])*)--)>/gi;

  text = text.replace(tags, function (wholeMatch) {
    return wholeMatch
      .replace(/(.)<\/?code>(?=.)/g, '$1`')
      .replace(/([\\`*_~=|])/g, showdown.helper.escapeCharactersCallback);
  });

  text = text.replace(comments, function (wholeMatch) {
    return wholeMatch
      .replace(/([\\`*_~=|])/g, showdown.helper.escapeCharactersCallback);
  });

  text = globals.converter._dispatch('escapeSpecialCharsWithinTagAttributes.after', text, options, globals);
  return text;
});

/**
 * Handle github codeblocks prior to running HashHTML so that
 * HTML contained within the codeblock gets escaped properly
 * Example:
 * ```ruby
 *     def hello_world(x)
 *       puts "Hello, #{x}"
 *     end
 * ```
 */
showdown.subParser('githubCodeBlocks', function (text, options, globals) {
  'use strict';

  // early exit if option is not enabled
  if (!options.ghCodeBlocks) {
    return text;
  }

  text = globals.converter._dispatch('githubCodeBlocks.before', text, options, globals);

  text += '¨0';

  text = text.replace(/(?:^|\n)(?: {0,3})(```+|~~~+)(?: *)([^\s`~]*)\n([\s\S]*?)\n(?: {0,3})\1/g, function (wholeMatch, delim, language, codeblock) {
    var end = (options.omitExtraWLInCodeBlocks) ? '' : '\n';

    // First parse the github code block
    codeblock = showdown.subParser('encodeCode')(codeblock, options, globals);
    codeblock = showdown.subParser('detab')(codeblock, options, globals);
    codeblock = codeblock.replace(/^\n+/g, ''); // trim leading newlines
    codeblock = codeblock.replace(/\n+$/g, ''); // trim trailing whitespace

    codeblock = '<pre><code' + (language ? ' class="' + language + ' language-' + language + '"' : '') + '>' + codeblock + end + '</code></pre>';

    codeblock = showdown.subParser('hashBlock')(codeblock, options, globals);

    // Since GHCodeblocks can be false positives, we need to
    // store the primitive text and the parsed text in a global var,
    // and then return a token
    return '\n\n¨G' + (globals.ghCodeBlocks.push({text: wholeMatch, codeblock: codeblock}) - 1) + 'G\n\n';
  });

  // attacklab: strip sentinel
  text = text.replace(/¨0/, '');

  return globals.converter._dispatch('githubCodeBlocks.after', text, options, globals);
});

showdown.subParser('hashBlock', function (text, options, globals) {
  'use strict';
  text = globals.converter._dispatch('hashBlock.before', text, options, globals);
  text = text.replace(/(^\n+|\n+$)/g, '');
  text = '\n\n¨K' + (globals.gHtmlBlocks.push(text) - 1) + 'K\n\n';
  text = globals.converter._dispatch('hashBlock.after', text, options, globals);
  return text;
});

/**
 * Hash and escape <code> elements that should not be parsed as markdown
 */
showdown.subParser('hashCodeTags', function (text, options, globals) {
  'use strict';
  text = globals.converter._dispatch('hashCodeTags.before', text, options, globals);

  var repFunc = function (wholeMatch, match, left, right) {
    var codeblock = left + showdown.subParser('encodeCode')(match, options, globals) + right;
    return '¨C' + (globals.gHtmlSpans.push(codeblock) - 1) + 'C';
  };

  // Hash naked <code>
  text = showdown.helper.replaceRecursiveRegExp(text, repFunc, '<code\\b[^>]*>', '</code>', 'gim');

  text = globals.converter._dispatch('hashCodeTags.after', text, options, globals);
  return text;
});

showdown.subParser('hashElement', function (text, options, globals) {
  'use strict';

  return function (wholeMatch, m1) {
    var blockText = m1;

    // Undo double lines
    blockText = blockText.replace(/\n\n/g, '\n');
    blockText = blockText.replace(/^\n/, '');

    // strip trailing blank lines
    blockText = blockText.replace(/\n+$/g, '');

    // Replace the element text with a marker ("¨KxK" where x is its key)
    blockText = '\n\n¨K' + (globals.gHtmlBlocks.push(blockText) - 1) + 'K\n\n';

    return blockText;
  };
});

showdown.subParser('hashHTMLBlocks', function (text, options, globals) {
  'use strict';
  text = globals.converter._dispatch('hashHTMLBlocks.before', text, options, globals);

  var blockTags = [
        'pre',
        'div',
        'h1',
        'h2',
        'h3',
        'h4',
        'h5',
        'h6',
        'blockquote',
        'table',
        'dl',
        'ol',
        'ul',
        'script',
        'noscript',
        'form',
        'fieldset',
        'iframe',
        'math',
        'style',
        'section',
        'header',
        'footer',
        'nav',
        'article',
        'aside',
        'address',
        'audio',
        'canvas',
        'figure',
        'hgroup',
        'output',
        'video',
        'p'
      ],
      repFunc = function (wholeMatch, match, left, right) {
        var txt = wholeMatch;
        // check if this html element is marked as markdown
        // if so, it's contents should be parsed as markdown
        if (left.search(/\bmarkdown\b/) !== -1) {
          txt = left + globals.converter.makeHtml(match) + right;
        }
        return '\n\n¨K' + (globals.gHtmlBlocks.push(txt) - 1) + 'K\n\n';
      };

  if (options.backslashEscapesHTMLTags) {
    // encode backslash escaped HTML tags
    text = text.replace(/\\<(\/?[^>]+?)>/g, function (wm, inside) {
      return '&lt;' + inside + '&gt;';
    });
  }

  // hash HTML Blocks
  for (var i = 0; i < blockTags.length; ++i) {

    var opTagPos,
        rgx1     = new RegExp('^ {0,3}(<' + blockTags[i] + '\\b[^>]*>)', 'im'),
        patLeft  = '<' + blockTags[i] + '\\b[^>]*>',
        patRight = '</' + blockTags[i] + '>';
    // 1. Look for the first position of the first opening HTML tag in the text
    while ((opTagPos = showdown.helper.regexIndexOf(text, rgx1)) !== -1) {

      // if the HTML tag is \ escaped, we need to escape it and break


      //2. Split the text in that position
      var subTexts = showdown.helper.splitAtIndex(text, opTagPos),
          //3. Match recursively
          newSubText1 = showdown.helper.replaceRecursiveRegExp(subTexts[1], repFunc, patLeft, patRight, 'im');

      // prevent an infinite loop
      if (newSubText1 === subTexts[1]) {
        break;
      }
      text = subTexts[0].concat(newSubText1);
    }
  }
  // HR SPECIAL CASE
  text = text.replace(/(\n {0,3}(<(hr)\b([^<>])*?\/?>)[ \t]*(?=\n{2,}))/g,
    showdown.subParser('hashElement')(text, options, globals));

  // Special case for standalone HTML comments
  text = showdown.helper.replaceRecursiveRegExp(text, function (txt) {
    return '\n\n¨K' + (globals.gHtmlBlocks.push(txt) - 1) + 'K\n\n';
  }, '^ {0,3}<!--', '-->', 'gm');

  // PHP and ASP-style processor instructions (<?...?> and <%...%>)
  text = text.replace(/(?:\n\n)( {0,3}(?:<([?%])[^\r]*?\2>)[ \t]*(?=\n{2,}))/g,
    showdown.subParser('hashElement')(text, options, globals));

  text = globals.converter._dispatch('hashHTMLBlocks.after', text, options, globals);
  return text;
});

/**
 * Hash span elements that should not be parsed as markdown
 */
showdown.subParser('hashHTMLSpans', function (text, options, globals) {
  'use strict';
  text = globals.converter._dispatch('hashHTMLSpans.before', text, options, globals);

  function hashHTMLSpan (html) {
    return '¨C' + (globals.gHtmlSpans.push(html) - 1) + 'C';
  }

  // Hash Self Closing tags
  text = text.replace(/<[^>]+?\/>/gi, function (wm) {
    return hashHTMLSpan(wm);
  });

  // Hash tags without properties
  text = text.replace(/<([^>]+?)>[\s\S]*?<\/\1>/g, function (wm) {
    return hashHTMLSpan(wm);
  });

  // Hash tags with properties
  text = text.replace(/<([^>]+?)\s[^>]+?>[\s\S]*?<\/\1>/g, function (wm) {
    return hashHTMLSpan(wm);
  });

  // Hash self closing tags without />
  text = text.replace(/<[^>]+?>/gi, function (wm) {
    return hashHTMLSpan(wm);
  });

  /*showdown.helper.matchRecursiveRegExp(text, '<code\\b[^>]*>', '</code>', 'gi');*/

  text = globals.converter._dispatch('hashHTMLSpans.after', text, options, globals);
  return text;
});

/**
 * Unhash HTML spans
 */
showdown.subParser('unhashHTMLSpans', function (text, options, globals) {
  'use strict';
  text = globals.converter._dispatch('unhashHTMLSpans.before', text, options, globals);

  for (var i = 0; i < globals.gHtmlSpans.length; ++i) {
    var repText = globals.gHtmlSpans[i],
        // limiter to prevent infinite loop (assume 10 as limit for recurse)
        limit = 0;

    while (/¨C(\d+)C/.test(repText)) {
      var num = RegExp.$1;
      repText = repText.replace('¨C' + num + 'C', globals.gHtmlSpans[num]);
      if (limit === 10) {
        console.error('maximum nesting of 10 spans reached!!!');
        break;
      }
      ++limit;
    }
    text = text.replace('¨C' + i + 'C', repText);
  }

  text = globals.converter._dispatch('unhashHTMLSpans.after', text, options, globals);
  return text;
});

/**
 * Hash and escape <pre><code> elements that should not be parsed as markdown
 */
showdown.subParser('hashPreCodeTags', function (text, options, globals) {
  'use strict';
  text = globals.converter._dispatch('hashPreCodeTags.before', text, options, globals);

  var repFunc = function (wholeMatch, match, left, right) {
    // encode html entities
    var codeblock = left + showdown.subParser('encodeCode')(match, options, globals) + right;
    return '\n\n¨G' + (globals.ghCodeBlocks.push({text: wholeMatch, codeblock: codeblock}) - 1) + 'G\n\n';
  };

  // Hash <pre><code>
  text = showdown.helper.replaceRecursiveRegExp(text, repFunc, '^ {0,3}<pre\\b[^>]*>\\s*<code\\b[^>]*>', '^ {0,3}</code>\\s*</pre>', 'gim');

  text = globals.converter._dispatch('hashPreCodeTags.after', text, options, globals);
  return text;
});

showdown.subParser('headers', function (text, options, globals) {
  'use strict';

  text = globals.converter._dispatch('headers.before', text, options, globals);

  var headerLevelStart = (isNaN(parseInt(options.headerLevelStart))) ? 1 : parseInt(options.headerLevelStart),

      // Set text-style headers:
      //	Header 1
      //	========
      //
      //	Header 2
      //	--------
      //
      setextRegexH1 = (options.smoothLivePreview) ? /^(.+)[ \t]*\n={2,}[ \t]*\n+/gm : /^(.+)[ \t]*\n=+[ \t]*\n+/gm,
      setextRegexH2 = (options.smoothLivePreview) ? /^(.+)[ \t]*\n-{2,}[ \t]*\n+/gm : /^(.+)[ \t]*\n-+[ \t]*\n+/gm;

  text = text.replace(setextRegexH1, function (wholeMatch, m1) {

    var spanGamut = showdown.subParser('spanGamut')(m1, options, globals),
        hID = (options.noHeaderId) ? '' : ' id="' + headerId(m1) + '"',
        hLevel = headerLevelStart,
        hashBlock = '<h' + hLevel + hID + '>' + spanGamut + '</h' + hLevel + '>';
    return showdown.subParser('hashBlock')(hashBlock, options, globals);
  });

  text = text.replace(setextRegexH2, function (matchFound, m1) {
    var spanGamut = showdown.subParser('spanGamut')(m1, options, globals),
        hID = (options.noHeaderId) ? '' : ' id="' + headerId(m1) + '"',
        hLevel = headerLevelStart + 1,
        hashBlock = '<h' + hLevel + hID + '>' + spanGamut + '</h' + hLevel + '>';
    return showdown.subParser('hashBlock')(hashBlock, options, globals);
  });

  // atx-style headers:
  //  # Header 1
  //  ## Header 2
  //  ## Header 2 with closing hashes ##
  //  ...
  //  ###### Header 6
  //
  var atxStyle = (options.requireSpaceBeforeHeadingText) ? /^(#{1,6})[ \t]+(.+?)[ \t]*#*\n+/gm : /^(#{1,6})[ \t]*(.+?)[ \t]*#*\n+/gm;

  text = text.replace(atxStyle, function (wholeMatch, m1, m2) {
    var hText = m2;
    if (options.customizedHeaderId) {
      hText = m2.replace(/\s?\{([^{]+?)}\s*$/, '');
    }

    var span = showdown.subParser('spanGamut')(hText, options, globals),
        hID = (options.noHeaderId) ? '' : ' id="' + headerId(m2) + '"',
        hLevel = headerLevelStart - 1 + m1.length,
        header = '<h' + hLevel + hID + '>' + span + '</h' + hLevel + '>';

    return showdown.subParser('hashBlock')(header, options, globals);
  });

  function headerId (m) {
    var title,
        prefix;

    // It is separate from other options to allow combining prefix and customized
    if (options.customizedHeaderId) {
      var match = m.match(/\{([^{]+?)}\s*$/);
      if (match && match[1]) {
        m = match[1];
      }
    }

    title = m;

    // Prefix id to prevent causing inadvertent pre-existing style matches.
    if (showdown.helper.isString(options.prefixHeaderId)) {
      prefix = options.prefixHeaderId;
    } else if (options.prefixHeaderId === true) {
      prefix = 'section-';
    } else {
      prefix = '';
    }

    if (!options.rawPrefixHeaderId) {
      title = prefix + title;
    }

    if (options.ghCompatibleHeaderId) {
      title = title
        .replace(/ /g, '-')
        // replace previously escaped chars (&, ¨ and $)
        .replace(/&amp;/g, '')
        .replace(/¨T/g, '')
        .replace(/¨D/g, '')
        // replace rest of the chars (&~$ are repeated as they might have been escaped)
        // borrowed from github's redcarpet (some they should produce similar results)
        .replace(/[&+$,\/:;=?@"#{}|^¨~\[\]`\\*)(%.!'<>]/g, '')
        .toLowerCase();
    } else if (options.rawHeaderId) {
      title = title
        .replace(/ /g, '-')
        // replace previously escaped chars (&, ¨ and $)
        .replace(/&amp;/g, '&')
        .replace(/¨T/g, '¨')
        .replace(/¨D/g, '$')
        // replace " and '
        .replace(/["']/g, '-')
        .toLowerCase();
    } else {
      title = title
        .replace(/[^\w]/g, '')
        .toLowerCase();
    }

    if (options.rawPrefixHeaderId) {
      title = prefix + title;
    }

    if (globals.hashLinkCounts[title]) {
      title = title + '-' + (globals.hashLinkCounts[title]++);
    } else {
      globals.hashLinkCounts[title] = 1;
    }
    return title;
  }

  text = globals.converter._dispatch('headers.after', text, options, globals);
  return text;
});

/**
 * Turn Markdown link shortcuts into XHTML <a> tags.
 */
showdown.subParser('horizontalRule', function (text, options, globals) {
  'use strict';
  text = globals.converter._dispatch('horizontalRule.before', text, options, globals);

  var key = showdown.subParser('hashBlock')('<hr />', options, globals);
  text = text.replace(/^ {0,2}( ?-){3,}[ \t]*$/gm, key);
  text = text.replace(/^ {0,2}( ?\*){3,}[ \t]*$/gm, key);
  text = text.replace(/^ {0,2}( ?_){3,}[ \t]*$/gm, key);

  text = globals.converter._dispatch('horizontalRule.after', text, options, globals);
  return text;
});

/**
 * Turn Markdown image shortcuts into <img> tags.
 */
showdown.subParser('images', function (text, options, globals) {
  'use strict';

  text = globals.converter._dispatch('images.before', text, options, globals);

  var inlineRegExp      = /!\[([^\]]*?)][ \t]*()\([ \t]?<?([\S]+?(?:\([\S]*?\)[\S]*?)?)>?(?: =([*\d]+[A-Za-z%]{0,4})x([*\d]+[A-Za-z%]{0,4}))?[ \t]*(?:(["'])([^"]*?)\6)?[ \t]?\)/g,
      crazyRegExp       = /!\[([^\]]*?)][ \t]*()\([ \t]?<([^>]*)>(?: =([*\d]+[A-Za-z%]{0,4})x([*\d]+[A-Za-z%]{0,4}))?[ \t]*(?:(?:(["'])([^"]*?)\6))?[ \t]?\)/g,
      base64RegExp      = /!\[([^\]]*?)][ \t]*()\([ \t]?<?(data:.+?\/.+?;base64,[A-Za-z0-9+/=\n]+?)>?(?: =([*\d]+[A-Za-z%]{0,4})x([*\d]+[A-Za-z%]{0,4}))?[ \t]*(?:(["'])([^"]*?)\6)?[ \t]?\)/g,
      referenceRegExp   = /!\[([^\]]*?)] ?(?:\n *)?\[([\s\S]*?)]()()()()()/g,
      refShortcutRegExp = /!\[([^\[\]]+)]()()()()()/g;

  function writeImageTagBase64 (wholeMatch, altText, linkId, url, width, height, m5, title) {
    url = url.replace(/\s/g, '');
    return writeImageTag (wholeMatch, altText, linkId, url, width, height, m5, title);
  }

  function writeImageTag (wholeMatch, altText, linkId, url, width, height, m5, title) {

    var gUrls   = globals.gUrls,
        gTitles = globals.gTitles,
        gDims   = globals.gDimensions;

    linkId = linkId.toLowerCase();

    if (!title) {
      title = '';
    }
    // Special case for explicit empty url
    if (wholeMatch.search(/\(<?\s*>? ?(['"].*['"])?\)$/m) > -1) {
      url = '';

    } else if (url === '' || url === null) {
      if (linkId === '' || linkId === null) {
        // lower-case and turn embedded newlines into spaces
        linkId = altText.toLowerCase().replace(/ ?\n/g, ' ');
      }
      url = '#' + linkId;

      if (!showdown.helper.isUndefined(gUrls[linkId])) {
        url = gUrls[linkId];
        if (!showdown.helper.isUndefined(gTitles[linkId])) {
          title = gTitles[linkId];
        }
        if (!showdown.helper.isUndefined(gDims[linkId])) {
          width = gDims[linkId].width;
          height = gDims[linkId].height;
        }
      } else {
        return wholeMatch;
      }
    }

    altText = altText
      .replace(/"/g, '&quot;')
    //altText = showdown.helper.escapeCharacters(altText, '*_', false);
      .replace(showdown.helper.regexes.asteriskDashAndColon, showdown.helper.escapeCharactersCallback);
    //url = showdown.helper.escapeCharacters(url, '*_', false);
    url = url.replace(showdown.helper.regexes.asteriskDashAndColon, showdown.helper.escapeCharactersCallback);
    var result = '<img src="' + url + '" alt="' + altText + '"';

    if (title && showdown.helper.isString(title)) {
      title = title
        .replace(/"/g, '&quot;')
      //title = showdown.helper.escapeCharacters(title, '*_', false);
        .replace(showdown.helper.regexes.asteriskDashAndColon, showdown.helper.escapeCharactersCallback);
      result += ' title="' + title + '"';
    }

    if (width && height) {
      width  = (width === '*') ? 'auto' : width;
      height = (height === '*') ? 'auto' : height;

      result += ' width="' + width + '"';
      result += ' height="' + height + '"';
    }

    result += ' />';

    return result;
  }

  // First, handle reference-style labeled images: ![alt text][id]
  text = text.replace(referenceRegExp, writeImageTag);

  // Next, handle inline images:  ![alt text](url =<width>x<height> "optional title")

  // base64 encoded images
  text = text.replace(base64RegExp, writeImageTagBase64);

  // cases with crazy urls like ./image/cat1).png
  text = text.replace(crazyRegExp, writeImageTag);

  // normal cases
  text = text.replace(inlineRegExp, writeImageTag);

  // handle reference-style shortcuts: ![img text]
  text = text.replace(refShortcutRegExp, writeImageTag);

  text = globals.converter._dispatch('images.after', text, options, globals);
  return text;
});

showdown.subParser('italicsAndBold', function (text, options, globals) {
  'use strict';

  text = globals.converter._dispatch('italicsAndBold.before', text, options, globals);

  // it's faster to have 3 separate regexes for each case than have just one
  // because of backtracing, in some cases, it could lead to an exponential effect
  // called "catastrophic backtrace". Ominous!

  function parseInside (txt, left, right) {
    /*
    if (options.simplifiedAutoLink) {
      txt = showdown.subParser('simplifiedAutoLinks')(txt, options, globals);
    }
    */
    return left + txt + right;
  }

  // Parse underscores
  if (options.literalMidWordUnderscores) {
    text = text.replace(/\b___(\S[\s\S]*?)___\b/g, function (wm, txt) {
      return parseInside (txt, '<strong><em>', '</em></strong>');
    });
    text = text.replace(/\b__(\S[\s\S]*?)__\b/g, function (wm, txt) {
      return parseInside (txt, '<strong>', '</strong>');
    });
    text = text.replace(/\b_(\S[\s\S]*?)_\b/g, function (wm, txt) {
      return parseInside (txt, '<em>', '</em>');
    });
  } else {
    text = text.replace(/___(\S[\s\S]*?)___/g, function (wm, m) {
      return (/\S$/.test(m)) ? parseInside (m, '<strong><em>', '</em></strong>') : wm;
    });
    text = text.replace(/__(\S[\s\S]*?)__/g, function (wm, m) {
      return (/\S$/.test(m)) ? parseInside (m, '<strong>', '</strong>') : wm;
    });
    text = text.replace(/_([^\s_][\s\S]*?)_/g, function (wm, m) {
      // !/^_[^_]/.test(m) - test if it doesn't start with __ (since it seems redundant, we removed it)
      return (/\S$/.test(m)) ? parseInside (m, '<em>', '</em>') : wm;
    });
  }

  // Now parse asterisks
  if (options.literalMidWordAsterisks) {
    text = text.replace(/([^*]|^)\B\*\*\*(\S[\s\S]*?)\*\*\*\B(?!\*)/g, function (wm, lead, txt) {
      return parseInside (txt, lead + '<strong><em>', '</em></strong>');
    });
    text = text.replace(/([^*]|^)\B\*\*(\S[\s\S]*?)\*\*\B(?!\*)/g, function (wm, lead, txt) {
      return parseInside (txt, lead + '<strong>', '</strong>');
    });
    text = text.replace(/([^*]|^)\B\*(\S[\s\S]*?)\*\B(?!\*)/g, function (wm, lead, txt) {
      return parseInside (txt, lead + '<em>', '</em>');
    });
  } else {
    text = text.replace(/\*\*\*(\S[\s\S]*?)\*\*\*/g, function (wm, m) {
      return (/\S$/.test(m)) ? parseInside (m, '<strong><em>', '</em></strong>') : wm;
    });
    text = text.replace(/\*\*(\S[\s\S]*?)\*\*/g, function (wm, m) {
      return (/\S$/.test(m)) ? parseInside (m, '<strong>', '</strong>') : wm;
    });
    text = text.replace(/\*([^\s*][\s\S]*?)\*/g, function (wm, m) {
      // !/^\*[^*]/.test(m) - test if it doesn't start with ** (since it seems redundant, we removed it)
      return (/\S$/.test(m)) ? parseInside (m, '<em>', '</em>') : wm;
    });
  }


  text = globals.converter._dispatch('italicsAndBold.after', text, options, globals);
  return text;
});

/**
 * Form HTML ordered (numbered) and unordered (bulleted) lists.
 */
showdown.subParser('lists', function (text, options, globals) {
  'use strict';

  /**
   * Process the contents of a single ordered or unordered list, splitting it
   * into individual list items.
   * @param {string} listStr
   * @param {boolean} trimTrailing
   * @returns {string}
   */
  function processListItems (listStr, trimTrailing) {
    // The $g_list_level global keeps track of when we're inside a list.
    // Each time we enter a list, we increment it; when we leave a list,
    // we decrement. If it's zero, we're not in a list anymore.
    //
    // We do this because when we're not inside a list, we want to treat
    // something like this:
    //
    //    I recommend upgrading to version
    //    8. Oops, now this line is treated
    //    as a sub-list.
    //
    // As a single paragraph, despite the fact that the second line starts
    // with a digit-period-space sequence.
    //
    // Whereas when we're inside a list (or sub-list), that line will be
    // treated as the start of a sub-list. What a kludge, huh? This is
    // an aspect of Markdown's syntax that's hard to parse perfectly
    // without resorting to mind-reading. Perhaps the solution is to
    // change the syntax rules such that sub-lists must start with a
    // starting cardinal number; e.g. "1." or "a.".
    globals.gListLevel++;

    // trim trailing blank lines:
    listStr = listStr.replace(/\n{2,}$/, '\n');

    // attacklab: add sentinel to emulate \z
    listStr += '¨0';

    var rgx = /(\n)?(^ {0,3})([*+-]|\d+[.])[ \t]+((\[(x|X| )?])?[ \t]*[^\r]+?(\n{1,2}))(?=\n*(¨0| {0,3}([*+-]|\d+[.])[ \t]+))/gm,
        isParagraphed = (/\n[ \t]*\n(?!¨0)/.test(listStr));

    // Since version 1.5, nesting sublists requires 4 spaces (or 1 tab) indentation,
    // which is a syntax breaking change
    // activating this option reverts to old behavior
    if (options.disableForced4SpacesIndentedSublists) {
      rgx = /(\n)?(^ {0,3})([*+-]|\d+[.])[ \t]+((\[(x|X| )?])?[ \t]*[^\r]+?(\n{1,2}))(?=\n*(¨0|\2([*+-]|\d+[.])[ \t]+))/gm;
    }

    listStr = listStr.replace(rgx, function (wholeMatch, m1, m2, m3, m4, taskbtn, checked) {
      checked = (checked && checked.trim() !== '');

      var item = showdown.subParser('outdent')(m4, options, globals),
          bulletStyle = '';

      // Support for github tasklists
      if (taskbtn && options.tasklists) {
        bulletStyle = ' class="task-list-item" style="list-style-type: none;"';
        item = item.replace(/^[ \t]*\[(x|X| )?]/m, function () {
          var otp = '<input type="checkbox" disabled style="margin: 0px 0.35em 0.25em -1.6em; vertical-align: middle;"';
          if (checked) {
            otp += ' checked';
          }
          otp += '>';
          return otp;
        });
      }

      // ISSUE #312
      // This input: - - - a
      // causes trouble to the parser, since it interprets it as:
      // <ul><li><li><li>a</li></li></li></ul>
      // instead of:
      // <ul><li>- - a</li></ul>
      // So, to prevent it, we will put a marker (¨A)in the beginning of the line
      // Kind of hackish/monkey patching, but seems more effective than overcomplicating the list parser
      item = item.replace(/^([-*+]|\d\.)[ \t]+[\S\n ]*/g, function (wm2) {
        return '¨A' + wm2;
      });

      // m1 - Leading line or
      // Has a double return (multi paragraph) or
      // Has sublist
      if (m1 || (item.search(/\n{2,}/) > -1)) {
        item = showdown.subParser('githubCodeBlocks')(item, options, globals);
        item = showdown.subParser('blockGamut')(item, options, globals);
      } else {
        // Recursion for sub-lists:
        item = showdown.subParser('lists')(item, options, globals);
        item = item.replace(/\n$/, ''); // chomp(item)
        item = showdown.subParser('hashHTMLBlocks')(item, options, globals);

        // Colapse double linebreaks
        item = item.replace(/\n\n+/g, '\n\n');
        if (isParagraphed) {
          item = showdown.subParser('paragraphs')(item, options, globals);
        } else {
          item = showdown.subParser('spanGamut')(item, options, globals);
        }
      }

      // now we need to remove the marker (¨A)
      item = item.replace('¨A', '');
      // we can finally wrap the line in list item tags
      item =  '<li' + bulletStyle + '>' + item + '</li>\n';

      return item;
    });

    // attacklab: strip sentinel
    listStr = listStr.replace(/¨0/g, '');

    globals.gListLevel--;

    if (trimTrailing) {
      listStr = listStr.replace(/\s+$/, '');
    }

    return listStr;
  }

  function styleStartNumber (list, listType) {
    // check if ol and starts by a number different than 1
    if (listType === 'ol') {
      var res = list.match(/^ *(\d+)\./);
      if (res && res[1] !== '1') {
        return ' start="' + res[1] + '"';
      }
    }
    return '';
  }

  /**
   * Check and parse consecutive lists (better fix for issue #142)
   * @param {string} list
   * @param {string} listType
   * @param {boolean} trimTrailing
   * @returns {string}
   */
  function parseConsecutiveLists (list, listType, trimTrailing) {
    // check if we caught 2 or more consecutive lists by mistake
    // we use the counterRgx, meaning if listType is UL we look for OL and vice versa
    var olRgx = (options.disableForced4SpacesIndentedSublists) ? /^ ?\d+\.[ \t]/gm : /^ {0,3}\d+\.[ \t]/gm,
        ulRgx = (options.disableForced4SpacesIndentedSublists) ? /^ ?[*+-][ \t]/gm : /^ {0,3}[*+-][ \t]/gm,
        counterRxg = (listType === 'ul') ? olRgx : ulRgx,
        result = '';

    if (list.search(counterRxg) !== -1) {
      (function parseCL (txt) {
        var pos = txt.search(counterRxg),
            style = styleStartNumber(list, listType);
        if (pos !== -1) {
          // slice
          result += '\n\n<' + listType + style + '>\n' + processListItems(txt.slice(0, pos), !!trimTrailing) + '</' + listType + '>\n';

          // invert counterType and listType
          listType = (listType === 'ul') ? 'ol' : 'ul';
          counterRxg = (listType === 'ul') ? olRgx : ulRgx;

          //recurse
          parseCL(txt.slice(pos));
        } else {
          result += '\n\n<' + listType + style + '>\n' + processListItems(txt, !!trimTrailing) + '</' + listType + '>\n';
        }
      })(list);
    } else {
      var style = styleStartNumber(list, listType);
      result = '\n\n<' + listType + style + '>\n' + processListItems(list, !!trimTrailing) + '</' + listType + '>\n';
    }

    return result;
  }

  /** Start of list parsing **/
  text = globals.converter._dispatch('lists.before', text, options, globals);
  // add sentinel to hack around khtml/safari bug:
  // http://bugs.webkit.org/show_bug.cgi?id=11231
  text += '¨0';

  if (globals.gListLevel) {
    text = text.replace(/^(( {0,3}([*+-]|\d+[.])[ \t]+)[^\r]+?(¨0|\n{2,}(?=\S)(?![ \t]*(?:[*+-]|\d+[.])[ \t]+)))/gm,
      function (wholeMatch, list, m2) {
        var listType = (m2.search(/[*+-]/g) > -1) ? 'ul' : 'ol';
        return parseConsecutiveLists(list, listType, true);
      }
    );
  } else {
    text = text.replace(/(\n\n|^\n?)(( {0,3}([*+-]|\d+[.])[ \t]+)[^\r]+?(¨0|\n{2,}(?=\S)(?![ \t]*(?:[*+-]|\d+[.])[ \t]+)))/gm,
      function (wholeMatch, m1, list, m3) {
        var listType = (m3.search(/[*+-]/g) > -1) ? 'ul' : 'ol';
        return parseConsecutiveLists(list, listType, false);
      }
    );
  }

  // strip sentinel
  text = text.replace(/¨0/, '');
  text = globals.converter._dispatch('lists.after', text, options, globals);
  return text;
});

/**
 * Parse metadata at the top of the document
 */
showdown.subParser('metadata', function (text, options, globals) {
  'use strict';

  if (!options.metadata) {
    return text;
  }

  text = globals.converter._dispatch('metadata.before', text, options, globals);

  function parseMetadataContents (content) {
    // raw is raw so it's not changed in any way
    globals.metadata.raw = content;

    // escape chars forbidden in html attributes
    // double quotes
    content = content
      // ampersand first
      .replace(/&/g, '&amp;')
      // double quotes
      .replace(/"/g, '&quot;');

    content = content.replace(/\n {4}/g, ' ');
    content.replace(/^([\S ]+): +([\s\S]+?)$/gm, function (wm, key, value) {
      globals.metadata.parsed[key] = value;
      return '';
    });
  }

  text = text.replace(/^\s*«««+(\S*?)\n([\s\S]+?)\n»»»+\n/, function (wholematch, format, content) {
    parseMetadataContents(content);
    return '¨M';
  });

  text = text.replace(/^\s*---+(\S*?)\n([\s\S]+?)\n---+\n/, function (wholematch, format, content) {
    if (format) {
      globals.metadata.format = format;
    }
    parseMetadataContents(content);
    return '¨M';
  });

  text = text.replace(/¨M/g, '');

  text = globals.converter._dispatch('metadata.after', text, options, globals);
  return text;
});

/**
 * Remove one level of line-leading tabs or spaces
 */
showdown.subParser('outdent', function (text, options, globals) {
  'use strict';
  text = globals.converter._dispatch('outdent.before', text, options, globals);

  // attacklab: hack around Konqueror 3.5.4 bug:
  // "----------bug".replace(/^-/g,"") == "bug"
  text = text.replace(/^(\t|[ ]{1,4})/gm, '¨0'); // attacklab: g_tab_width

  // attacklab: clean up hack
  text = text.replace(/¨0/g, '');

  text = globals.converter._dispatch('outdent.after', text, options, globals);
  return text;
});

/**
 *
 */
showdown.subParser('paragraphs', function (text, options, globals) {
  'use strict';

  text = globals.converter._dispatch('paragraphs.before', text, options, globals);
  // Strip leading and trailing lines:
  text = text.replace(/^\n+/g, '');
  text = text.replace(/\n+$/g, '');

  var grafs = text.split(/\n{2,}/g),
      grafsOut = [],
      end = grafs.length; // Wrap <p> tags

  for (var i = 0; i < end; i++) {
    var str = grafs[i];
    // if this is an HTML marker, copy it
    if (str.search(/¨(K|G)(\d+)\1/g) >= 0) {
      grafsOut.push(str);

    // test for presence of characters to prevent empty lines being parsed
    // as paragraphs (resulting in undesired extra empty paragraphs)
    } else if (str.search(/\S/) >= 0) {
      str = showdown.subParser('spanGamut')(str, options, globals);
      str = str.replace(/^([ \t]*)/g, '<p>');
      str += '</p>';
      grafsOut.push(str);
    }
  }

  /** Unhashify HTML blocks */
  end = grafsOut.length;
  for (i = 0; i < end; i++) {
    var blockText = '',
        grafsOutIt = grafsOut[i],
        codeFlag = false;
    // if this is a marker for an html block...
    // use RegExp.test instead of string.search because of QML bug
    while (/¨(K|G)(\d+)\1/.test(grafsOutIt)) {
      var delim = RegExp.$1,
          num   = RegExp.$2;

      if (delim === 'K') {
        blockText = globals.gHtmlBlocks[num];
      } else {
        // we need to check if ghBlock is a false positive
        if (codeFlag) {
          // use encoded version of all text
          blockText = showdown.subParser('encodeCode')(globals.ghCodeBlocks[num].text, options, globals);
        } else {
          blockText = globals.ghCodeBlocks[num].codeblock;
        }
      }
      blockText = blockText.replace(/\$/g, '$$$$'); // Escape any dollar signs

      grafsOutIt = grafsOutIt.replace(/(\n\n)?¨(K|G)\d+\2(\n\n)?/, blockText);
      // Check if grafsOutIt is a pre->code
      if (/^<pre\b[^>]*>\s*<code\b[^>]*>/.test(grafsOutIt)) {
        codeFlag = true;
      }
    }
    grafsOut[i] = grafsOutIt;
  }
  text = grafsOut.join('\n');
  // Strip leading and trailing lines:
  text = text.replace(/^\n+/g, '');
  text = text.replace(/\n+$/g, '');
  return globals.converter._dispatch('paragraphs.after', text, options, globals);
});

/**
 * Run extension
 */
showdown.subParser('runExtension', function (ext, text, options, globals) {
  'use strict';

  if (ext.filter) {
    text = ext.filter(text, globals.converter, options);

  } else if (ext.regex) {
    // TODO remove this when old extension loading mechanism is deprecated
    var re = ext.regex;
    if (!(re instanceof RegExp)) {
      re = new RegExp(re, 'g');
    }
    text = text.replace(re, ext.replace);
  }

  return text;
});

/**
 * These are all the transformations that occur *within* block-level
 * tags like paragraphs, headers, and list items.
 */
showdown.subParser('spanGamut', function (text, options, globals) {
  'use strict';

  text = globals.converter._dispatch('spanGamut.before', text, options, globals);
  text = showdown.subParser('codeSpans')(text, options, globals);
  text = showdown.subParser('escapeSpecialCharsWithinTagAttributes')(text, options, globals);
  text = showdown.subParser('encodeBackslashEscapes')(text, options, globals);

  // Process anchor and image tags. Images must come first,
  // because ![foo][f] looks like an anchor.
  text = showdown.subParser('images')(text, options, globals);
  text = showdown.subParser('anchors')(text, options, globals);

  // Make links out of things like `<http://example.com/>`
  // Must come after anchors, because you can use < and >
  // delimiters in inline links like [this](<url>).
  text = showdown.subParser('autoLinks')(text, options, globals);
  text = showdown.subParser('simplifiedAutoLinks')(text, options, globals);
  text = showdown.subParser('emoji')(text, options, globals);
  text = showdown.subParser('underline')(text, options, globals);
  text = showdown.subParser('italicsAndBold')(text, options, globals);
  text = showdown.subParser('strikethrough')(text, options, globals);
  text = showdown.subParser('ellipsis')(text, options, globals);

  // we need to hash HTML tags inside spans
  text = showdown.subParser('hashHTMLSpans')(text, options, globals);

  // now we encode amps and angles
  text = showdown.subParser('encodeAmpsAndAngles')(text, options, globals);

  // Do hard breaks
  if (options.simpleLineBreaks) {
    // GFM style hard breaks
    // only add line breaks if the text does not contain a block (special case for lists)
    if (!/\n\n¨K/.test(text)) {
      text = text.replace(/\n+/g, '<br />\n');
    }
  } else {
    // Vanilla hard breaks
    text = text.replace(/  +\n/g, '<br />\n');
  }

  text = globals.converter._dispatch('spanGamut.after', text, options, globals);
  return text;
});

showdown.subParser('strikethrough', function (text, options, globals) {
  'use strict';

  function parseInside (txt) {
    if (options.simplifiedAutoLink) {
      txt = showdown.subParser('simplifiedAutoLinks')(txt, options, globals);
    }
    return '<del>' + txt + '</del>';
  }

  if (options.strikethrough) {
    text = globals.converter._dispatch('strikethrough.before', text, options, globals);
    text = text.replace(/(?:~){2}([\s\S]+?)(?:~){2}/g, function (wm, txt) { return parseInside(txt); });
    text = globals.converter._dispatch('strikethrough.after', text, options, globals);
  }

  return text;
});

/**
 * Strips link definitions from text, stores the URLs and titles in
 * hash references.
 * Link defs are in the form: ^[id]: url "optional title"
 */
showdown.subParser('stripLinkDefinitions', function (text, options, globals) {
  'use strict';

  var regex       = /^ {0,3}\[(.+)]:[ \t]*\n?[ \t]*<?([^>\s]+)>?(?: =([*\d]+[A-Za-z%]{0,4})x([*\d]+[A-Za-z%]{0,4}))?[ \t]*\n?[ \t]*(?:(\n*)["|'(](.+?)["|')][ \t]*)?(?:\n+|(?=¨0))/gm,
      base64Regex = /^ {0,3}\[(.+)]:[ \t]*\n?[ \t]*<?(data:.+?\/.+?;base64,[A-Za-z0-9+/=\n]+?)>?(?: =([*\d]+[A-Za-z%]{0,4})x([*\d]+[A-Za-z%]{0,4}))?[ \t]*\n?[ \t]*(?:(\n*)["|'(](.+?)["|')][ \t]*)?(?:\n\n|(?=¨0)|(?=\n\[))/gm;

  // attacklab: sentinel workarounds for lack of \A and \Z, safari\khtml bug
  text += '¨0';

  var replaceFunc = function (wholeMatch, linkId, url, width, height, blankLines, title) {
    linkId = linkId.toLowerCase();
    if (url.match(/^data:.+?\/.+?;base64,/)) {
      // remove newlines
      globals.gUrls[linkId] = url.replace(/\s/g, '');
    } else {
      globals.gUrls[linkId] = showdown.subParser('encodeAmpsAndAngles')(url, options, globals);  // Link IDs are case-insensitive
    }

    if (blankLines) {
      // Oops, found blank lines, so it's not a title.
      // Put back the parenthetical statement we stole.
      return blankLines + title;

    } else {
      if (title) {
        globals.gTitles[linkId] = title.replace(/"|'/g, '&quot;');
      }
      if (options.parseImgDimensions && width && height) {
        globals.gDimensions[linkId] = {
          width:  width,
          height: height
        };
      }
    }
    // Completely remove the definition from the text
    return '';
  };

  // first we try to find base64 link references
  text = text.replace(base64Regex, replaceFunc);

  text = text.replace(regex, replaceFunc);

  // attacklab: strip sentinel
  text = text.replace(/¨0/, '');

  return text;
});

showdown.subParser('tables', function (text, options, globals) {
  'use strict';

  if (!options.tables) {
    return text;
  }

  var tableRgx       = /^ {0,3}\|?.+\|.+\n {0,3}\|?[ \t]*:?[ \t]*(?:[-=]){2,}[ \t]*:?[ \t]*\|[ \t]*:?[ \t]*(?:[-=]){2,}[\s\S]+?(?:\n\n|¨0)/gm,
      //singeColTblRgx = /^ {0,3}\|.+\|\n {0,3}\|[ \t]*:?[ \t]*(?:[-=]){2,}[ \t]*:?[ \t]*\|[ \t]*\n(?: {0,3}\|.+\|\n)+(?:\n\n|¨0)/gm;
      singeColTblRgx = /^ {0,3}\|.+\|[ \t]*\n {0,3}\|[ \t]*:?[ \t]*(?:[-=]){2,}[ \t]*:?[ \t]*\|[ \t]*\n( {0,3}\|.+\|[ \t]*\n)*(?:\n|¨0)/gm;

  function parseStyles (sLine) {
    if (/^:[ \t]*--*$/.test(sLine)) {
      return ' style="text-align:left;"';
    } else if (/^--*[ \t]*:[ \t]*$/.test(sLine)) {
      return ' style="text-align:right;"';
    } else if (/^:[ \t]*--*[ \t]*:$/.test(sLine)) {
      return ' style="text-align:center;"';
    } else {
      return '';
    }
  }

  function parseHeaders (header, style) {
    var id = '';
    header = header.trim();
    // support both tablesHeaderId and tableHeaderId due to error in documentation so we don't break backwards compatibility
    if (options.tablesHeaderId || options.tableHeaderId) {
      id = ' id="' + header.replace(/ /g, '_').toLowerCase() + '"';
    }
    header = showdown.subParser('spanGamut')(header, options, globals);

    return '<th' + id + style + '>' + header + '</th>\n';
  }

  function parseCells (cell, style) {
    var subText = showdown.subParser('spanGamut')(cell, options, globals);
    return '<td' + style + '>' + subText + '</td>\n';
  }

  function buildTable (headers, cells) {
    var tb = '<table>\n<thead>\n<tr>\n',
        tblLgn = headers.length;

    for (var i = 0; i < tblLgn; ++i) {
      tb += headers[i];
    }
    tb += '</tr>\n</thead>\n<tbody>\n';

    for (i = 0; i < cells.length; ++i) {
      tb += '<tr>\n';
      for (var ii = 0; ii < tblLgn; ++ii) {
        tb += cells[i][ii];
      }
      tb += '</tr>\n';
    }
    tb += '</tbody>\n</table>\n';
    return tb;
  }

  function parseTable (rawTable) {
    var i, tableLines = rawTable.split('\n');

    for (i = 0; i < tableLines.length; ++i) {
      // strip wrong first and last column if wrapped tables are used
      if (/^ {0,3}\|/.test(tableLines[i])) {
        tableLines[i] = tableLines[i].replace(/^ {0,3}\|/, '');
      }
      if (/\|[ \t]*$/.test(tableLines[i])) {
        tableLines[i] = tableLines[i].replace(/\|[ \t]*$/, '');
      }
      // parse code spans first, but we only support one line code spans
      tableLines[i] = showdown.subParser('codeSpans')(tableLines[i], options, globals);
    }

    var rawHeaders = tableLines[0].split('|').map(function (s) { return s.trim();}),
        rawStyles = tableLines[1].split('|').map(function (s) { return s.trim();}),
        rawCells = [],
        headers = [],
        styles = [],
        cells = [];

    tableLines.shift();
    tableLines.shift();

    for (i = 0; i < tableLines.length; ++i) {
      if (tableLines[i].trim() === '') {
        continue;
      }
      rawCells.push(
        tableLines[i]
          .split('|')
          .map(function (s) {
            return s.trim();
          })
      );
    }

    if (rawHeaders.length < rawStyles.length) {
      return rawTable;
    }

    for (i = 0; i < rawStyles.length; ++i) {
      styles.push(parseStyles(rawStyles[i]));
    }

    for (i = 0; i < rawHeaders.length; ++i) {
      if (showdown.helper.isUndefined(styles[i])) {
        styles[i] = '';
      }
      headers.push(parseHeaders(rawHeaders[i], styles[i]));
    }

    for (i = 0; i < rawCells.length; ++i) {
      var row = [];
      for (var ii = 0; ii < headers.length; ++ii) {
        if (showdown.helper.isUndefined(rawCells[i][ii])) {

        }
        row.push(parseCells(rawCells[i][ii], styles[ii]));
      }
      cells.push(row);
    }

    return buildTable(headers, cells);
  }

  text = globals.converter._dispatch('tables.before', text, options, globals);

  // find escaped pipe characters
  text = text.replace(/\\(\|)/g, showdown.helper.escapeCharactersCallback);

  // parse multi column tables
  text = text.replace(tableRgx, parseTable);

  // parse one column tables
  text = text.replace(singeColTblRgx, parseTable);

  text = globals.converter._dispatch('tables.after', text, options, globals);

  return text;
});

showdown.subParser('underline', function (text, options, globals) {
  'use strict';

  if (!options.underline) {
    return text;
  }

  text = globals.converter._dispatch('underline.before', text, options, globals);

  if (options.literalMidWordUnderscores) {
    text = text.replace(/\b___(\S[\s\S]*?)___\b/g, function (wm, txt) {
      return '<u>' + txt + '</u>';
    });
    text = text.replace(/\b__(\S[\s\S]*?)__\b/g, function (wm, txt) {
      return '<u>' + txt + '</u>';
    });
  } else {
    text = text.replace(/___(\S[\s\S]*?)___/g, function (wm, m) {
      return (/\S$/.test(m)) ? '<u>' + m + '</u>' : wm;
    });
    text = text.replace(/__(\S[\s\S]*?)__/g, function (wm, m) {
      return (/\S$/.test(m)) ? '<u>' + m + '</u>' : wm;
    });
  }

  // escape remaining underscores to prevent them being parsed by italic and bold
  text = text.replace(/(_)/g, showdown.helper.escapeCharactersCallback);

  text = globals.converter._dispatch('underline.after', text, options, globals);

  return text;
});

/**
 * Swap back in all the special characters we've hidden.
 */
showdown.subParser('unescapeSpecialChars', function (text, options, globals) {
  'use strict';
  text = globals.converter._dispatch('unescapeSpecialChars.before', text, options, globals);

  text = text.replace(/¨E(\d+)E/g, function (wholeMatch, m1) {
    var charCodeToReplace = parseInt(m1);
    return String.fromCharCode(charCodeToReplace);
  });

  text = globals.converter._dispatch('unescapeSpecialChars.after', text, options, globals);
  return text;
});

showdown.subParser('makeMarkdown.blockquote', function (node, globals) {
  'use strict';

  var txt = '';
  if (node.hasChildNodes()) {
    var children = node.childNodes,
        childrenLength = children.length;

    for (var i = 0; i < childrenLength; ++i) {
      var innerTxt = showdown.subParser('makeMarkdown.node')(children[i], globals);

      if (innerTxt === '') {
        continue;
      }
      txt += innerTxt;
    }
  }
  // cleanup
  txt = txt.trim();
  txt = '> ' + txt.split('\n').join('\n> ');
  return txt;
});

showdown.subParser('makeMarkdown.codeBlock', function (node, globals) {
  'use strict';

  var lang = node.getAttribute('language'),
      num  = node.getAttribute('precodenum');
  return '```' + lang + '\n' + globals.preList[num] + '\n```';
});

showdown.subParser('makeMarkdown.codeSpan', function (node) {
  'use strict';

  return '`' + node.innerHTML + '`';
});

showdown.subParser('makeMarkdown.emphasis', function (node, globals) {
  'use strict';

  var txt = '';
  if (node.hasChildNodes()) {
    txt += '*';
    var children = node.childNodes,
        childrenLength = children.length;
    for (var i = 0; i < childrenLength; ++i) {
      txt += showdown.subParser('makeMarkdown.node')(children[i], globals);
    }
    txt += '*';
  }
  return txt;
});

showdown.subParser('makeMarkdown.header', function (node, globals, headerLevel) {
  'use strict';

  var headerMark = new Array(headerLevel + 1).join('#'),
      txt = '';

  if (node.hasChildNodes()) {
    txt = headerMark + ' ';
    var children = node.childNodes,
        childrenLength = children.length;

    for (var i = 0; i < childrenLength; ++i) {
      txt += showdown.subParser('makeMarkdown.node')(children[i], globals);
    }
  }
  return txt;
});

showdown.subParser('makeMarkdown.hr', function () {
  'use strict';

  return '---';
});

showdown.subParser('makeMarkdown.image', function (node) {
  'use strict';

  var txt = '';
  if (node.hasAttribute('src')) {
    txt += '![' + node.getAttribute('alt') + '](';
    txt += '<' + node.getAttribute('src') + '>';
    if (node.hasAttribute('width') && node.hasAttribute('height')) {
      txt += ' =' + node.getAttribute('width') + 'x' + node.getAttribute('height');
    }

    if (node.hasAttribute('title')) {
      txt += ' "' + node.getAttribute('title') + '"';
    }
    txt += ')';
  }
  return txt;
});

showdown.subParser('makeMarkdown.links', function (node, globals) {
  'use strict';

  var txt = '';
  if (node.hasChildNodes() && node.hasAttribute('href')) {
    var children = node.childNodes,
        childrenLength = children.length;
    txt = '[';
    for (var i = 0; i < childrenLength; ++i) {
      txt += showdown.subParser('makeMarkdown.node')(children[i], globals);
    }
    txt += '](';
    txt += '<' + node.getAttribute('href') + '>';
    if (node.hasAttribute('title')) {
      txt += ' "' + node.getAttribute('title') + '"';
    }
    txt += ')';
  }
  return txt;
});

showdown.subParser('makeMarkdown.list', function (node, globals, type) {
  'use strict';

  var txt = '';
  if (!node.hasChildNodes()) {
    return '';
  }
  var listItems       = node.childNodes,
      listItemsLenght = listItems.length,
      listNum = node.getAttribute('start') || 1;

  for (var i = 0; i < listItemsLenght; ++i) {
    if (typeof listItems[i].tagName === 'undefined' || listItems[i].tagName.toLowerCase() !== 'li') {
      continue;
    }

    // define the bullet to use in list
    var bullet = '';
    if (type === 'ol') {
      bullet = listNum.toString() + '. ';
    } else {
      bullet = '- ';
    }

    // parse list item
    txt += bullet + showdown.subParser('makeMarkdown.listItem')(listItems[i], globals);
    ++listNum;
  }

  // add comment at the end to prevent consecutive lists to be parsed as one
  txt += '\n<!-- -->\n';
  return txt.trim();
});

showdown.subParser('makeMarkdown.listItem', function (node, globals) {
  'use strict';

  var listItemTxt = '';

  var children = node.childNodes,
      childrenLenght = children.length;

  for (var i = 0; i < childrenLenght; ++i) {
    listItemTxt += showdown.subParser('makeMarkdown.node')(children[i], globals);
  }
  // if it's only one liner, we need to add a newline at the end
  if (!/\n$/.test(listItemTxt)) {
    listItemTxt += '\n';
  } else {
    // it's multiparagraph, so we need to indent
    listItemTxt = listItemTxt
      .split('\n')
      .join('\n    ')
      .replace(/^ {4}$/gm, '')
      .replace(/\n\n+/g, '\n\n');
  }

  return listItemTxt;
});



showdown.subParser('makeMarkdown.node', function (node, globals, spansOnly) {
  'use strict';

  spansOnly = spansOnly || false;

  var txt = '';

  // edge case of text without wrapper paragraph
  if (node.nodeType === 3) {
    return showdown.subParser('makeMarkdown.txt')(node, globals);
  }

  // HTML comment
  if (node.nodeType === 8) {
    return '<!--' + node.data + '-->\n\n';
  }

  // process only node elements
  if (node.nodeType !== 1) {
    return '';
  }

  var tagName = node.tagName.toLowerCase();

  switch (tagName) {

    //
    // BLOCKS
    //
    case 'h1':
      if (!spansOnly) { txt = showdown.subParser('makeMarkdown.header')(node, globals, 1) + '\n\n'; }
      break;
    case 'h2':
      if (!spansOnly) { txt = showdown.subParser('makeMarkdown.header')(node, globals, 2) + '\n\n'; }
      break;
    case 'h3':
      if (!spansOnly) { txt = showdown.subParser('makeMarkdown.header')(node, globals, 3) + '\n\n'; }
      break;
    case 'h4':
      if (!spansOnly) { txt = showdown.subParser('makeMarkdown.header')(node, globals, 4) + '\n\n'; }
      break;
    case 'h5':
      if (!spansOnly) { txt = showdown.subParser('makeMarkdown.header')(node, globals, 5) + '\n\n'; }
      break;
    case 'h6':
      if (!spansOnly) { txt = showdown.subParser('makeMarkdown.header')(node, globals, 6) + '\n\n'; }
      break;

    case 'p':
      if (!spansOnly) { txt = showdown.subParser('makeMarkdown.paragraph')(node, globals) + '\n\n'; }
      break;

    case 'blockquote':
      if (!spansOnly) { txt = showdown.subParser('makeMarkdown.blockquote')(node, globals) + '\n\n'; }
      break;

    case 'hr':
      if (!spansOnly) { txt = showdown.subParser('makeMarkdown.hr')(node, globals) + '\n\n'; }
      break;

    case 'ol':
      if (!spansOnly) { txt = showdown.subParser('makeMarkdown.list')(node, globals, 'ol') + '\n\n'; }
      break;

    case 'ul':
      if (!spansOnly) { txt = showdown.subParser('makeMarkdown.list')(node, globals, 'ul') + '\n\n'; }
      break;

    case 'precode':
      if (!spansOnly) { txt = showdown.subParser('makeMarkdown.codeBlock')(node, globals) + '\n\n'; }
      break;

    case 'pre':
      if (!spansOnly) { txt = showdown.subParser('makeMarkdown.pre')(node, globals) + '\n\n'; }
      break;

    case 'table':
      if (!spansOnly) { txt = showdown.subParser('makeMarkdown.table')(node, globals) + '\n\n'; }
      break;

    //
    // SPANS
    //
    case 'code':
      txt = showdown.subParser('makeMarkdown.codeSpan')(node, globals);
      break;

    case 'em':
    case 'i':
      txt = showdown.subParser('makeMarkdown.emphasis')(node, globals);
      break;

    case 'strong':
    case 'b':
      txt = showdown.subParser('makeMarkdown.strong')(node, globals);
      break;

    case 'del':
      txt = showdown.subParser('makeMarkdown.strikethrough')(node, globals);
      break;

    case 'a':
      txt = showdown.subParser('makeMarkdown.links')(node, globals);
      break;

    case 'img':
      txt = showdown.subParser('makeMarkdown.image')(node, globals);
      break;

    default:
      txt = node.outerHTML + '\n\n';
  }

  // common normalization
  // TODO eventually

  return txt;
});

showdown.subParser('makeMarkdown.paragraph', function (node, globals) {
  'use strict';

  var txt = '';
  if (node.hasChildNodes()) {
    var children = node.childNodes,
        childrenLength = children.length;
    for (var i = 0; i < childrenLength; ++i) {
      txt += showdown.subParser('makeMarkdown.node')(children[i], globals);
    }
  }

  // some text normalization
  txt = txt.trim();

  return txt;
});

showdown.subParser('makeMarkdown.pre', function (node, globals) {
  'use strict';

  var num  = node.getAttribute('prenum');
  return '<pre>' + globals.preList[num] + '</pre>';
});

showdown.subParser('makeMarkdown.strikethrough', function (node, globals) {
  'use strict';

  var txt = '';
  if (node.hasChildNodes()) {
    txt += '~~';
    var children = node.childNodes,
        childrenLength = children.length;
    for (var i = 0; i < childrenLength; ++i) {
      txt += showdown.subParser('makeMarkdown.node')(children[i], globals);
    }
    txt += '~~';
  }
  return txt;
});

showdown.subParser('makeMarkdown.strong', function (node, globals) {
  'use strict';

  var txt = '';
  if (node.hasChildNodes()) {
    txt += '**';
    var children = node.childNodes,
        childrenLength = children.length;
    for (var i = 0; i < childrenLength; ++i) {
      txt += showdown.subParser('makeMarkdown.node')(children[i], globals);
    }
    txt += '**';
  }
  return txt;
});

showdown.subParser('makeMarkdown.table', function (node, globals) {
  'use strict';

  var txt = '',
      tableArray = [[], []],
      headings   = node.querySelectorAll('thead>tr>th'),
      rows       = node.querySelectorAll('tbody>tr'),
      i, ii;
  for (i = 0; i < headings.length; ++i) {
    var headContent = showdown.subParser('makeMarkdown.tableCell')(headings[i], globals),
        allign = '---';

    if (headings[i].hasAttribute('style')) {
      var style = headings[i].getAttribute('style').toLowerCase().replace(/\s/g, '');
      switch (style) {
        case 'text-align:left;':
          allign = ':---';
          break;
        case 'text-align:right;':
          allign = '---:';
          break;
        case 'text-align:center;':
          allign = ':---:';
          break;
      }
    }
    tableArray[0][i] = headContent.trim();
    tableArray[1][i] = allign;
  }

  for (i = 0; i < rows.length; ++i) {
    var r = tableArray.push([]) - 1,
        cols = rows[i].getElementsByTagName('td');

    for (ii = 0; ii < headings.length; ++ii) {
      var cellContent = ' ';
      if (typeof cols[ii] !== 'undefined') {
        cellContent = showdown.subParser('makeMarkdown.tableCell')(cols[ii], globals);
      }
      tableArray[r].push(cellContent);
    }
  }

  var cellSpacesCount = 3;
  for (i = 0; i < tableArray.length; ++i) {
    for (ii = 0; ii < tableArray[i].length; ++ii) {
      var strLen = tableArray[i][ii].length;
      if (strLen > cellSpacesCount) {
        cellSpacesCount = strLen;
      }
    }
  }

  for (i = 0; i < tableArray.length; ++i) {
    for (ii = 0; ii < tableArray[i].length; ++ii) {
      if (i === 1) {
        if (tableArray[i][ii].slice(-1) === ':') {
          tableArray[i][ii] = showdown.helper.padEnd(tableArray[i][ii].slice(-1), cellSpacesCount - 1, '-') + ':';
        } else {
          tableArray[i][ii] = showdown.helper.padEnd(tableArray[i][ii], cellSpacesCount, '-');
        }
      } else {
        tableArray[i][ii] = showdown.helper.padEnd(tableArray[i][ii], cellSpacesCount);
      }
    }
    txt += '| ' + tableArray[i].join(' | ') + ' |\n';
  }

  return txt.trim();
});

showdown.subParser('makeMarkdown.tableCell', function (node, globals) {
  'use strict';

  var txt = '';
  if (!node.hasChildNodes()) {
    return '';
  }
  var children = node.childNodes,
      childrenLength = children.length;

  for (var i = 0; i < childrenLength; ++i) {
    txt += showdown.subParser('makeMarkdown.node')(children[i], globals, true);
  }
  return txt.trim();
});

showdown.subParser('makeMarkdown.txt', function (node) {
  'use strict';

  var txt = node.nodeValue;

  // multiple spaces are collapsed
  txt = txt.replace(/ +/g, ' ');

  // replace the custom ¨NBSP; with a space
  txt = txt.replace(/¨NBSP;/g, ' ');

  // ", <, > and & should replace escaped html entities
  txt = showdown.helper.unescapeHTMLEntities(txt);

  // escape markdown magic characters
  // emphasis, strong and strikethrough - can appear everywhere
  // we also escape pipe (|) because of tables
  // and escape ` because of code blocks and spans
  txt = txt.replace(/([*_~|`])/g, '\\$1');

  // escape > because of blockquotes
  txt = txt.replace(/^(\s*)>/g, '\\$1>');

  // hash character, only troublesome at the beginning of a line because of headers
  txt = txt.replace(/^#/gm, '\\#');

  // horizontal rules
  txt = txt.replace(/^(\s*)([-=]{3,})(\s*)$/, '$1\\$2$3');

  // dot, because of ordered lists, only troublesome at the beginning of a line when preceded by an integer
  txt = txt.replace(/^( {0,3}\d+)\./gm, '$1\\.');

  // +, * and -, at the beginning of a line becomes a list, so we need to escape them also (asterisk was already escaped)
  txt = txt.replace(/^( {0,3})([+-])/gm, '$1\\$2');

  // images and links, ] followed by ( is problematic, so we escape it
  txt = txt.replace(/]([\s]*)\(/g, '\\]$1\\(');

  // reference URIs must also be escaped
  txt = txt.replace(/^ {0,3}\[([\S \t]*?)]:/gm, '\\[$1]:');

  return txt;
});

var root = this;

// AMD Loader
if (true) {
  !(__WEBPACK_AMD_DEFINE_RESULT__ = function () {
    'use strict';
    return showdown;
  }.call(exports, __webpack_require__, exports, module),
				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));

// CommonJS/nodeJS Loader
} else if (typeof module !== 'undefined' && module.exports) {
  module.exports = showdown;

// Regular Browser loader
} else {
  root.showdown = showdown;
}
}).call(this);

//# sourceMappingURL=showdown.js.map


/***/ }),

/***/ 3214:
/***/ (function(module, exports, __webpack_require__) {

/* WEBPACK VAR INJECTION */(function(global) {(function (global, factory) {
	 true ? module.exports = factory() :
	typeof define === 'function' && define.amd ? define(factory) :
	(global.showdownKatex = factory());
}(this, (function () { 'use strict';

var commonjsGlobal = typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};



function unwrapExports (x) {
	return x && x.__esModule && Object.prototype.hasOwnProperty.call(x, 'default') ? x['default'] : x;
}

function createCommonjsModule(fn, module) {
	return module = { exports: {} }, fn(module, module.exports), module.exports;
}

var katex = createCommonjsModule(function (module, exports) {
(function webpackUniversalModuleDefinition(root, factory) {
	module.exports = factory();
})((typeof self !== 'undefined' ? self : commonjsGlobal), function() {
return /******/ (function(modules) { // webpackBootstrap
/******/ 	// The module cache
/******/ 	var installedModules = {};
/******/
/******/ 	// The require function
/******/ 	function __webpack_require__(moduleId) {
/******/
/******/ 		// Check if module is in cache
/******/ 		if(installedModules[moduleId]) {
/******/ 			return installedModules[moduleId].exports;
/******/ 		}
/******/ 		// Create a new module (and put it into the cache)
/******/ 		var module = installedModules[moduleId] = {
/******/ 			i: moduleId,
/******/ 			l: false,
/******/ 			exports: {}
/******/ 		};
/******/
/******/ 		// Execute the module function
/******/ 		modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
/******/
/******/ 		// Flag the module as loaded
/******/ 		module.l = true;
/******/
/******/ 		// Return the exports of the module
/******/ 		return module.exports;
/******/ 	}
/******/
/******/
/******/ 	// expose the modules object (__webpack_modules__)
/******/ 	__webpack_require__.m = modules;
/******/
/******/ 	// expose the module cache
/******/ 	__webpack_require__.c = installedModules;
/******/
/******/ 	// define getter function for harmony exports
/******/ 	__webpack_require__.d = function(exports, name, getter) {
/******/ 		if(!__webpack_require__.o(exports, name)) {
/******/ 			Object.defineProperty(exports, name, { enumerable: true, get: getter });
/******/ 		}
/******/ 	};
/******/
/******/ 	// define __esModule on exports
/******/ 	__webpack_require__.r = function(exports) {
/******/ 		if(typeof Symbol !== 'undefined' && Symbol.toStringTag) {
/******/ 			Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
/******/ 		}
/******/ 		Object.defineProperty(exports, '__esModule', { value: true });
/******/ 	};
/******/
/******/ 	// create a fake namespace object
/******/ 	// mode & 1: value is a module id, require it
/******/ 	// mode & 2: merge all properties of value into the ns
/******/ 	// mode & 4: return value when already ns object
/******/ 	// mode & 8|1: behave like require
/******/ 	__webpack_require__.t = function(value, mode) {
/******/ 		if(mode & 1) value = __webpack_require__(value);
/******/ 		if(mode & 8) return value;
/******/ 		if((mode & 4) && typeof value === 'object' && value && value.__esModule) return value;
/******/ 		var ns = Object.create(null);
/******/ 		__webpack_require__.r(ns);
/******/ 		Object.defineProperty(ns, 'default', { enumerable: true, value: value });
/******/ 		if(mode & 2 && typeof value != 'string') for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));
/******/ 		return ns;
/******/ 	};
/******/
/******/ 	// getDefaultExport function for compatibility with non-harmony modules
/******/ 	__webpack_require__.n = function(module) {
/******/ 		var getter = module && module.__esModule ?
/******/ 			function getDefault() { return module['default']; } :
/******/ 			function getModuleExports() { return module; };
/******/ 		__webpack_require__.d(getter, 'a', getter);
/******/ 		return getter;
/******/ 	};
/******/
/******/ 	// Object.prototype.hasOwnProperty.call
/******/ 	__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
/******/
/******/ 	// __webpack_public_path__
/******/ 	__webpack_require__.p = "";
/******/
/******/
/******/ 	// Load entry module and return exports
/******/ 	return __webpack_require__(__webpack_require__.s = 2);
/******/ })
/************************************************************************/
/******/ ([
/* 0 */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 1 */,
/* 2 */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);

// EXTERNAL MODULE: ./src/katex.less
var katex = __webpack_require__(0);

// CONCATENATED MODULE: ./src/SourceLocation.js
/**
 * Lexing or parsing positional information for error reporting.
 * This object is immutable.
 */
var SourceLocation =
/*#__PURE__*/
function () {
  // The + prefix indicates that these fields aren't writeable
  // Lexer holding the input string.
  // Start offset, zero-based inclusive.
  // End offset, zero-based exclusive.
  function SourceLocation(lexer, start, end) {
    this.lexer = void 0;
    this.start = void 0;
    this.end = void 0;
    this.lexer = lexer;
    this.start = start;
    this.end = end;
  }

  var _proto = SourceLocation.prototype;

  _proto.getSource = function getSource() {
    return this.lexer.input.slice(this.start, this.end);
  };
  /**
   * Merges two `SourceLocation`s from location providers, given they are
   * provided in order of appearance.
   * - Returns the first one's location if only the first is provided.
   * - Returns a merged range of the first and the last if both are provided
   *   and their lexers match.
   * - Otherwise, returns null.
   */


  SourceLocation.range = function range(first, second) {
    if (!second) {
      return first && first.loc;
    } else if (!first || !first.loc || !second.loc || first.loc.lexer !== second.loc.lexer) {
      return null;
    } else {
      return new SourceLocation(first.loc.lexer, first.loc.start, second.loc.end);
    }
  };

  return SourceLocation;
}();


// CONCATENATED MODULE: ./src/Token.js

/**
 * Interface required to break circular dependency between Token, Lexer, and
 * ParseError.
 */

/**
 * The resulting token returned from `lex`.
 *
 * It consists of the token text plus some position information.
 * The position information is essentially a range in an input string,
 * but instead of referencing the bare input string, we refer to the lexer.
 * That way it is possible to attach extra metadata to the input string,
 * like for example a file name or similar.
 *
 * The position information is optional, so it is OK to construct synthetic
 * tokens if appropriate. Not providing available position information may
 * lead to degraded error reporting, though.
 */
var Token_Token =
/*#__PURE__*/
function () {
  function Token(text, // the text of this token
  loc) {
    this.text = void 0;
    this.loc = void 0;
    this.text = text;
    this.loc = loc;
  }
  /**
   * Given a pair of tokens (this and endToken), compute a `Token` encompassing
   * the whole input range enclosed by these two.
   */


  var _proto = Token.prototype;

  _proto.range = function range(endToken, // last token of the range, inclusive
  text) // the text of the newly constructed token
  {
    return new Token(text, SourceLocation.range(this, endToken));
  };

  return Token;
}();
// CONCATENATED MODULE: ./src/ParseError.js


/**
 * This is the ParseError class, which is the main error thrown by KaTeX
 * functions when something has gone wrong. This is used to distinguish internal
 * errors from errors in the expression that the user provided.
 *
 * If possible, a caller should provide a Token or ParseNode with information
 * about where in the source string the problem occurred.
 */
var ParseError = // Error position based on passed-in Token or ParseNode.
function ParseError(message, // The error message
token) // An object providing position information
{
  this.position = void 0;
  var error = "KaTeX parse error: " + message;
  var start;
  var loc = token && token.loc;

  if (loc && loc.start <= loc.end) {
    // If we have the input and a position, make the error a bit fancier
    // Get the input
    var input = loc.lexer.input; // Prepend some information

    start = loc.start;
    var end = loc.end;

    if (start === input.length) {
      error += " at end of input: ";
    } else {
      error += " at position " + (start + 1) + ": ";
    } // Underline token in question using combining underscores


    var underlined = input.slice(start, end).replace(/[^]/g, "$&\u0332"); // Extract some context from the input and add it to the error

    var left;

    if (start > 15) {
      left = "…" + input.slice(start - 15, start);
    } else {
      left = input.slice(0, start);
    }

    var right;

    if (end + 15 < input.length) {
      right = input.slice(end, end + 15) + "…";
    } else {
      right = input.slice(end);
    }

    error += left + underlined + right;
  } // Some hackery to make ParseError a prototype of Error
  // See http://stackoverflow.com/a/8460753


  var self = new Error(error);
  self.name = "ParseError"; // $FlowFixMe

  self.__proto__ = ParseError.prototype; // $FlowFixMe

  self.position = start;
  return self;
}; // $FlowFixMe More hackery


ParseError.prototype.__proto__ = Error.prototype;
/* harmony default export */ var src_ParseError = (ParseError);
// CONCATENATED MODULE: ./src/utils.js
/**
 * This file contains a list of utility functions which are useful in other
 * files.
 */

/**
 * Return whether an element is contained in a list
 */
var contains = function contains(list, elem) {
  return list.indexOf(elem) !== -1;
};
/**
 * Provide a default value if a setting is undefined
 * NOTE: Couldn't use `T` as the output type due to facebook/flow#5022.
 */


var deflt = function deflt(setting, defaultIfUndefined) {
  return setting === undefined ? defaultIfUndefined : setting;
}; // hyphenate and escape adapted from Facebook's React under Apache 2 license


var uppercase = /([A-Z])/g;

var hyphenate = function hyphenate(str) {
  return str.replace(uppercase, "-$1").toLowerCase();
};

var ESCAPE_LOOKUP = {
  "&": "&amp;",
  ">": "&gt;",
  "<": "&lt;",
  "\"": "&quot;",
  "'": "&#x27;"
};
var ESCAPE_REGEX = /[&><"']/g;
/**
 * Escapes text to prevent scripting attacks.
 */

function utils_escape(text) {
  return String(text).replace(ESCAPE_REGEX, function (match) {
    return ESCAPE_LOOKUP[match];
  });
}
/**
 * Sometimes we want to pull out the innermost element of a group. In most
 * cases, this will just be the group itself, but when ordgroups and colors have
 * a single element, we want to pull that out.
 */


var getBaseElem = function getBaseElem(group) {
  if (group.type === "ordgroup") {
    if (group.body.length === 1) {
      return getBaseElem(group.body[0]);
    } else {
      return group;
    }
  } else if (group.type === "color") {
    if (group.body.length === 1) {
      return getBaseElem(group.body[0]);
    } else {
      return group;
    }
  } else if (group.type === "font") {
    return getBaseElem(group.body);
  } else {
    return group;
  }
};
/**
 * TeXbook algorithms often reference "character boxes", which are simply groups
 * with a single character in them. To decide if something is a character box,
 * we find its innermost group, and see if it is a single character.
 */


var utils_isCharacterBox = function isCharacterBox(group) {
  var baseElem = getBaseElem(group); // These are all they types of groups which hold single characters

  return baseElem.type === "mathord" || baseElem.type === "textord" || baseElem.type === "atom";
};

var assert = function assert(value) {
  if (!value) {
    throw new Error('Expected non-null, but got ' + String(value));
  }

  return value;
};
/* harmony default export */ var utils = ({
  contains: contains,
  deflt: deflt,
  escape: utils_escape,
  hyphenate: hyphenate,
  getBaseElem: getBaseElem,
  isCharacterBox: utils_isCharacterBox
});
// CONCATENATED MODULE: ./src/Settings.js
/* eslint no-console:0 */

/**
 * This is a module for storing settings passed into KaTeX. It correctly handles
 * default settings.
 */




/**
 * The main Settings object
 *
 * The current options stored are:
 *  - displayMode: Whether the expression should be typeset as inline math
 *                 (false, the default), meaning that the math starts in
 *                 \textstyle and is placed in an inline-block); or as display
 *                 math (true), meaning that the math starts in \displaystyle
 *                 and is placed in a block with vertical margin.
 */
var Settings_Settings =
/*#__PURE__*/
function () {
  function Settings(options) {
    this.displayMode = void 0;
    this.throwOnError = void 0;
    this.errorColor = void 0;
    this.macros = void 0;
    this.colorIsTextColor = void 0;
    this.strict = void 0;
    this.maxSize = void 0;
    this.maxExpand = void 0;
    this.allowedProtocols = void 0;
    // allow null options
    options = options || {};
    this.displayMode = utils.deflt(options.displayMode, false);
    this.throwOnError = utils.deflt(options.throwOnError, true);
    this.errorColor = utils.deflt(options.errorColor, "#cc0000");
    this.macros = options.macros || {};
    this.colorIsTextColor = utils.deflt(options.colorIsTextColor, false);
    this.strict = utils.deflt(options.strict, "warn");
    this.maxSize = Math.max(0, utils.deflt(options.maxSize, Infinity));
    this.maxExpand = Math.max(0, utils.deflt(options.maxExpand, 1000));
    this.allowedProtocols = utils.deflt(options.allowedProtocols, ["http", "https", "mailto", "_relative"]);
  }
  /**
   * Report nonstrict (non-LaTeX-compatible) input.
   * Can safely not be called if `this.strict` is false in JavaScript.
   */


  var _proto = Settings.prototype;

  _proto.reportNonstrict = function reportNonstrict(errorCode, errorMsg, token) {
    var strict = this.strict;

    if (typeof strict === "function") {
      // Allow return value of strict function to be boolean or string
      // (or null/undefined, meaning no further processing).
      strict = strict(errorCode, errorMsg, token);
    }

    if (!strict || strict === "ignore") {
      return;
    } else if (strict === true || strict === "error") {
      throw new src_ParseError("LaTeX-incompatible input and strict mode is set to 'error': " + (errorMsg + " [" + errorCode + "]"), token);
    } else if (strict === "warn") {
      typeof console !== "undefined" && console.warn("LaTeX-incompatible input and strict mode is set to 'warn': " + (errorMsg + " [" + errorCode + "]"));
    } else {
      // won't happen in type-safe code
      typeof console !== "undefined" && console.warn("LaTeX-incompatible input and strict mode is set to " + ("unrecognized '" + strict + "': " + errorMsg + " [" + errorCode + "]"));
    }
  };
  /**
   * Check whether to apply strict (LaTeX-adhering) behavior for unusual
   * input (like `\\`).  Unlike `nonstrict`, will not throw an error;
   * instead, "error" translates to a return value of `true`, while "ignore"
   * translates to a return value of `false`.  May still print a warning:
   * "warn" prints a warning and returns `false`.
   * This is for the second category of `errorCode`s listed in the README.
   */


  _proto.useStrictBehavior = function useStrictBehavior(errorCode, errorMsg, token) {
    var strict = this.strict;

    if (typeof strict === "function") {
      // Allow return value of strict function to be boolean or string
      // (or null/undefined, meaning no further processing).
      // But catch any exceptions thrown by function, treating them
      // like "error".
      try {
        strict = strict(errorCode, errorMsg, token);
      } catch (error) {
        strict = "error";
      }
    }

    if (!strict || strict === "ignore") {
      return false;
    } else if (strict === true || strict === "error") {
      return true;
    } else if (strict === "warn") {
      typeof console !== "undefined" && console.warn("LaTeX-incompatible input and strict mode is set to 'warn': " + (errorMsg + " [" + errorCode + "]"));
      return false;
    } else {
      // won't happen in type-safe code
      typeof console !== "undefined" && console.warn("LaTeX-incompatible input and strict mode is set to " + ("unrecognized '" + strict + "': " + errorMsg + " [" + errorCode + "]"));
      return false;
    }
  };

  return Settings;
}();

/* harmony default export */ var src_Settings = (Settings_Settings);
// CONCATENATED MODULE: ./src/Style.js
/**
 * This file contains information and classes for the various kinds of styles
 * used in TeX. It provides a generic `Style` class, which holds information
 * about a specific style. It then provides instances of all the different kinds
 * of styles possible, and provides functions to move between them and get
 * information about them.
 */

/**
 * The main style class. Contains a unique id for the style, a size (which is
 * the same for cramped and uncramped version of a style), and a cramped flag.
 */
var Style =
/*#__PURE__*/
function () {
  function Style(id, size, cramped) {
    this.id = void 0;
    this.size = void 0;
    this.cramped = void 0;
    this.id = id;
    this.size = size;
    this.cramped = cramped;
  }
  /**
   * Get the style of a superscript given a base in the current style.
   */


  var _proto = Style.prototype;

  _proto.sup = function sup() {
    return Style_styles[_sup[this.id]];
  };
  /**
   * Get the style of a subscript given a base in the current style.
   */


  _proto.sub = function sub() {
    return Style_styles[_sub[this.id]];
  };
  /**
   * Get the style of a fraction numerator given the fraction in the current
   * style.
   */


  _proto.fracNum = function fracNum() {
    return Style_styles[_fracNum[this.id]];
  };
  /**
   * Get the style of a fraction denominator given the fraction in the current
   * style.
   */


  _proto.fracDen = function fracDen() {
    return Style_styles[_fracDen[this.id]];
  };
  /**
   * Get the cramped version of a style (in particular, cramping a cramped style
   * doesn't change the style).
   */


  _proto.cramp = function cramp() {
    return Style_styles[_cramp[this.id]];
  };
  /**
   * Get a text or display version of this style.
   */


  _proto.text = function text() {
    return Style_styles[_text[this.id]];
  };
  /**
   * Return true if this style is tightly spaced (scriptstyle/scriptscriptstyle)
   */


  _proto.isTight = function isTight() {
    return this.size >= 2;
  };

  return Style;
}(); // Export an interface for type checking, but don't expose the implementation.
// This way, no more styles can be generated.


// IDs of the different styles
var D = 0;
var Dc = 1;
var T = 2;
var Tc = 3;
var S = 4;
var Sc = 5;
var SS = 6;
var SSc = 7; // Instances of the different styles

var Style_styles = [new Style(D, 0, false), new Style(Dc, 0, true), new Style(T, 1, false), new Style(Tc, 1, true), new Style(S, 2, false), new Style(Sc, 2, true), new Style(SS, 3, false), new Style(SSc, 3, true)]; // Lookup tables for switching from one style to another

var _sup = [S, Sc, S, Sc, SS, SSc, SS, SSc];
var _sub = [Sc, Sc, Sc, Sc, SSc, SSc, SSc, SSc];
var _fracNum = [T, Tc, S, Sc, SS, SSc, SS, SSc];
var _fracDen = [Tc, Tc, Sc, Sc, SSc, SSc, SSc, SSc];
var _cramp = [Dc, Dc, Tc, Tc, Sc, Sc, SSc, SSc];
var _text = [D, Dc, T, Tc, T, Tc, T, Tc]; // We only export some of the styles.

/* harmony default export */ var src_Style = ({
  DISPLAY: Style_styles[D],
  TEXT: Style_styles[T],
  SCRIPT: Style_styles[S],
  SCRIPTSCRIPT: Style_styles[SS]
});
// CONCATENATED MODULE: ./src/unicodeScripts.js
/*
 * This file defines the Unicode scripts and script families that we
 * support. To add new scripts or families, just add a new entry to the
 * scriptData array below. Adding scripts to the scriptData array allows
 * characters from that script to appear in \text{} environments.
 */

/**
 * Each script or script family has a name and an array of blocks.
 * Each block is an array of two numbers which specify the start and
 * end points (inclusive) of a block of Unicode codepoints.
 */

/**
 * Unicode block data for the families of scripts we support in \text{}.
 * Scripts only need to appear here if they do not have font metrics.
 */
var scriptData = [{
  // Latin characters beyond the Latin-1 characters we have metrics for.
  // Needed for Czech, Hungarian and Turkish text, for example.
  name: 'latin',
  blocks: [[0x0100, 0x024f], // Latin Extended-A and Latin Extended-B
  [0x0300, 0x036f]]
}, {
  // The Cyrillic script used by Russian and related languages.
  // A Cyrillic subset used to be supported as explicitly defined
  // symbols in symbols.js
  name: 'cyrillic',
  blocks: [[0x0400, 0x04ff]]
}, {
  // The Brahmic scripts of South and Southeast Asia
  // Devanagari (0900–097F)
  // Bengali (0980–09FF)
  // Gurmukhi (0A00–0A7F)
  // Gujarati (0A80–0AFF)
  // Oriya (0B00–0B7F)
  // Tamil (0B80–0BFF)
  // Telugu (0C00–0C7F)
  // Kannada (0C80–0CFF)
  // Malayalam (0D00–0D7F)
  // Sinhala (0D80–0DFF)
  // Thai (0E00–0E7F)
  // Lao (0E80–0EFF)
  // Tibetan (0F00–0FFF)
  // Myanmar (1000–109F)
  name: 'brahmic',
  blocks: [[0x0900, 0x109F]]
}, {
  name: 'georgian',
  blocks: [[0x10A0, 0x10ff]]
}, {
  // Chinese and Japanese.
  // The "k" in cjk is for Korean, but we've separated Korean out
  name: "cjk",
  blocks: [[0x3000, 0x30FF], // CJK symbols and punctuation, Hiragana, Katakana
  [0x4E00, 0x9FAF], // CJK ideograms
  [0xFF00, 0xFF60]]
}, {
  // Korean
  name: 'hangul',
  blocks: [[0xAC00, 0xD7AF]]
}];
/**
 * Given a codepoint, return the name of the script or script family
 * it is from, or null if it is not part of a known block
 */

function scriptFromCodepoint(codepoint) {
  for (var i = 0; i < scriptData.length; i++) {
    var script = scriptData[i];

    for (var _i = 0; _i < script.blocks.length; _i++) {
      var block = script.blocks[_i];

      if (codepoint >= block[0] && codepoint <= block[1]) {
        return script.name;
      }
    }
  }

  return null;
}
/**
 * A flattened version of all the supported blocks in a single array.
 * This is an optimization to make supportedCodepoint() fast.
 */

var allBlocks = [];
scriptData.forEach(function (s) {
  return s.blocks.forEach(function (b) {
    return allBlocks.push.apply(allBlocks, b);
  });
});
/**
 * Given a codepoint, return true if it falls within one of the
 * scripts or script families defined above and false otherwise.
 *
 * Micro benchmarks shows that this is faster than
 * /[\u3000-\u30FF\u4E00-\u9FAF\uFF00-\uFF60\uAC00-\uD7AF\u0900-\u109F]/.test()
 * in Firefox, Chrome and Node.
 */

function supportedCodepoint(codepoint) {
  for (var i = 0; i < allBlocks.length; i += 2) {
    if (codepoint >= allBlocks[i] && codepoint <= allBlocks[i + 1]) {
      return true;
    }
  }

  return false;
}
// CONCATENATED MODULE: ./src/svgGeometry.js
/**
 * This file provides support to domTree.js
 * It's a storehouse of path geometry for SVG images.
 */
// In all paths below, the viewBox-to-em scale is 1000:1.
var hLinePad = 80; // padding above a sqrt viniculum.

var svgGeometry_path = {
  // sqrtMain path geometry is from glyph U221A in the font KaTeX Main
  // All surds have 80 units padding above the viniculumn.
  sqrtMain: "M95," + (622 + hLinePad) + "c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5,\n-10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8,\n-50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0,\n35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5,\n-221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467\ns-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422\ns-65,47,-65,47z M834 " + hLinePad + "H400000v40H845z",
  // size1 is from glyph U221A in the font KaTeX_Size1-Regular
  sqrtSize1: "M263," + (601 + hLinePad) + "c0.7,0,18,39.7,52,119c34,79.3,68.167,\n158.7,102.5,238c34.3,79.3,51.8,119.3,52.5,120c340,-704.7,510.7,-1060.3,512,-1067\nc4.7,-7.3,11,-11,19,-11H40000v40H1012.3s-271.3,567,-271.3,567c-38.7,80.7,-84,\n175,-136,283c-52,108,-89.167,185.3,-111.5,232c-22.3,46.7,-33.8,70.3,-34.5,71\nc-4.7,4.7,-12.3,7,-23,7s-12,-1,-12,-1s-109,-253,-109,-253c-72.7,-168,-109.3,\n-252,-110,-252c-10.7,8,-22,16.7,-34,26c-22,17.3,-33.3,26,-34,26s-26,-26,-26,-26\ns76,-59,76,-59s76,-60,76,-60z M1001 " + hLinePad + "H40000v40H1012z",
  // size2 is from glyph U221A in the font KaTeX_Size2-Regular
  // The 80 units padding is most obvious here. Note start node at M1001 80.
  sqrtSize2: "M1001," + hLinePad + "H400000v40H1013.1s-83.4,268,-264.1,840c-180.7,\n572,-277,876.3,-289,913c-4.7,4.7,-12.7,7,-24,7s-12,0,-12,0c-1.3,-3.3,-3.7,-11.7,\n-7,-25c-35.3,-125.3,-106.7,-373.3,-214,-744c-10,12,-21,25,-33,39s-32,39,-32,39\nc-6,-5.3,-15,-14,-27,-26s25,-30,25,-30c26.7,-32.7,52,-63,76,-91s52,-60,52,-60\ns208,722,208,722c56,-175.3,126.3,-397.3,211,-666c84.7,-268.7,153.8,-488.2,207.5,\n-658.5c53.7,-170.3,84.5,-266.8,92.5,-289.5c4,-6.7,10,-10,18,-10z\nM1001 " + hLinePad + "H400000v40H1013z",
  // size3 is from glyph U221A in the font KaTeX_Size3-Regular
  sqrtSize3: "M424," + (2398 + hLinePad) + "c-1.3,-0.7,-38.5,-172,-111.5,-514c-73,\n-342,-109.8,-513.3,-110.5,-514c0,-2,-10.7,14.3,-32,49c-4.7,7.3,-9.8,15.7,-15.5,\n25c-5.7,9.3,-9.8,16,-12.5,20s-5,7,-5,7c-4,-3.3,-8.3,-7.7,-13,-13s-13,-13,-13,\n-13s76,-122,76,-122s77,-121,77,-121s209,968,209,968c0,-2,84.7,-361.7,254,-1079\nc169.3,-717.3,254.7,-1077.7,256,-1081c4,-6.7,10,-10,18,-10H400000v40H1014.6\ns-87.3,378.7,-272.6,1166c-185.3,787.3,-279.3,1182.3,-282,1185c-2,6,-10,9,-24,9\nc-8,0,-12,-0.7,-12,-2z M1001 " + hLinePad + "H400000v40H1014z",
  // size4 is from glyph U221A in the font KaTeX_Size4-Regular
  sqrtSize4: "M473," + (2713 + hLinePad) + "c339.3,-1799.3,509.3,-2700,510,-2702\nc3.3,-7.3,9.3,-11,18,-11H400000v40H1017.7s-90.5,478,-276.2,1466c-185.7,988,\n-279.5,1483,-281.5,1485c-2,6,-10,9,-24,9c-8,0,-12,-0.7,-12,-2c0,-1.3,-5.3,-32,\n-16,-92c-50.7,-293.3,-119.7,-693.3,-207,-1200c0,-1.3,-5.3,8.7,-16,30c-10.7,\n21.3,-21.3,42.7,-32,64s-16,33,-16,33s-26,-26,-26,-26s76,-153,76,-153s77,-151,\n77,-151c0.7,0.7,35.7,202,105,604c67.3,400.7,102,602.7,104,606z\nM1001 " + hLinePad + "H400000v40H1017z",
  // The doubleleftarrow geometry is from glyph U+21D0 in the font KaTeX Main
  doubleleftarrow: "M262 157\nl10-10c34-36 62.7-77 86-123 3.3-8 5-13.3 5-16 0-5.3-6.7-8-20-8-7.3\n 0-12.2.5-14.5 1.5-2.3 1-4.8 4.5-7.5 10.5-49.3 97.3-121.7 169.3-217 216-28\n 14-57.3 25-88 33-6.7 2-11 3.8-13 5.5-2 1.7-3 4.2-3 7.5s1 5.8 3 7.5\nc2 1.7 6.3 3.5 13 5.5 68 17.3 128.2 47.8 180.5 91.5 52.3 43.7 93.8 96.2 124.5\n 157.5 9.3 8 15.3 12.3 18 13h6c12-.7 18-4 18-10 0-2-1.7-7-5-15-23.3-46-52-87\n-86-123l-10-10h399738v-40H218c328 0 0 0 0 0l-10-8c-26.7-20-65.7-43-117-69 2.7\n-2 6-3.7 10-5 36.7-16 72.3-37.3 107-64l10-8h399782v-40z\nm8 0v40h399730v-40zm0 194v40h399730v-40z",
  // doublerightarrow is from glyph U+21D2 in font KaTeX Main
  doublerightarrow: "M399738 392l\n-10 10c-34 36-62.7 77-86 123-3.3 8-5 13.3-5 16 0 5.3 6.7 8 20 8 7.3 0 12.2-.5\n 14.5-1.5 2.3-1 4.8-4.5 7.5-10.5 49.3-97.3 121.7-169.3 217-216 28-14 57.3-25 88\n-33 6.7-2 11-3.8 13-5.5 2-1.7 3-4.2 3-7.5s-1-5.8-3-7.5c-2-1.7-6.3-3.5-13-5.5-68\n-17.3-128.2-47.8-180.5-91.5-52.3-43.7-93.8-96.2-124.5-157.5-9.3-8-15.3-12.3-18\n-13h-6c-12 .7-18 4-18 10 0 2 1.7 7 5 15 23.3 46 52 87 86 123l10 10H0v40h399782\nc-328 0 0 0 0 0l10 8c26.7 20 65.7 43 117 69-2.7 2-6 3.7-10 5-36.7 16-72.3 37.3\n-107 64l-10 8H0v40zM0 157v40h399730v-40zm0 194v40h399730v-40z",
  // leftarrow is from glyph U+2190 in font KaTeX Main
  leftarrow: "M400000 241H110l3-3c68.7-52.7 113.7-120\n 135-202 4-14.7 6-23 6-25 0-7.3-7-11-21-11-8 0-13.2.8-15.5 2.5-2.3 1.7-4.2 5.8\n-5.5 12.5-1.3 4.7-2.7 10.3-4 17-12 48.7-34.8 92-68.5 130S65.3 228.3 18 247\nc-10 4-16 7.7-18 11 0 8.7 6 14.3 18 17 47.3 18.7 87.8 47 121.5 85S196 441.3 208\n 490c.7 2 1.3 5 2 9s1.2 6.7 1.5 8c.3 1.3 1 3.3 2 6s2.2 4.5 3.5 5.5c1.3 1 3.3\n 1.8 6 2.5s6 1 10 1c14 0 21-3.7 21-11 0-2-2-10.3-6-25-20-79.3-65-146.7-135-202\n l-3-3h399890zM100 241v40h399900v-40z",
  // overbrace is from glyphs U+23A9/23A8/23A7 in font KaTeX_Size4-Regular
  leftbrace: "M6 548l-6-6v-35l6-11c56-104 135.3-181.3 238-232 57.3-28.7 117\n-45 179-50h399577v120H403c-43.3 7-81 15-113 26-100.7 33-179.7 91-237 174-2.7\n 5-6 9-10 13-.7 1-7.3 1-20 1H6z",
  leftbraceunder: "M0 6l6-6h17c12.688 0 19.313.3 20 1 4 4 7.313 8.3 10 13\n 35.313 51.3 80.813 93.8 136.5 127.5 55.688 33.7 117.188 55.8 184.5 66.5.688\n 0 2 .3 4 1 18.688 2.7 76 4.3 172 5h399450v120H429l-6-1c-124.688-8-235-61.7\n-331-161C60.687 138.7 32.312 99.3 7 54L0 41V6z",
  // overgroup is from the MnSymbol package (public domain)
  leftgroup: "M400000 80\nH435C64 80 168.3 229.4 21 260c-5.9 1.2-18 0-18 0-2 0-3-1-3-3v-38C76 61 257 0\n 435 0h399565z",
  leftgroupunder: "M400000 262\nH435C64 262 168.3 112.6 21 82c-5.9-1.2-18 0-18 0-2 0-3 1-3 3v38c76 158 257 219\n 435 219h399565z",
  // Harpoons are from glyph U+21BD in font KaTeX Main
  leftharpoon: "M0 267c.7 5.3 3 10 7 14h399993v-40H93c3.3\n-3.3 10.2-9.5 20.5-18.5s17.8-15.8 22.5-20.5c50.7-52 88-110.3 112-175 4-11.3 5\n-18.3 3-21-1.3-4-7.3-6-18-6-8 0-13 .7-15 2s-4.7 6.7-8 16c-42 98.7-107.3 174.7\n-196 228-6.7 4.7-10.7 8-12 10-1.3 2-2 5.7-2 11zm100-26v40h399900v-40z",
  leftharpoonplus: "M0 267c.7 5.3 3 10 7 14h399993v-40H93c3.3-3.3 10.2-9.5\n 20.5-18.5s17.8-15.8 22.5-20.5c50.7-52 88-110.3 112-175 4-11.3 5-18.3 3-21-1.3\n-4-7.3-6-18-6-8 0-13 .7-15 2s-4.7 6.7-8 16c-42 98.7-107.3 174.7-196 228-6.7 4.7\n-10.7 8-12 10-1.3 2-2 5.7-2 11zm100-26v40h399900v-40zM0 435v40h400000v-40z\nm0 0v40h400000v-40z",
  leftharpoondown: "M7 241c-4 4-6.333 8.667-7 14 0 5.333.667 9 2 11s5.333\n 5.333 12 10c90.667 54 156 130 196 228 3.333 10.667 6.333 16.333 9 17 2 .667 5\n 1 9 1h5c10.667 0 16.667-2 18-6 2-2.667 1-9.667-3-21-32-87.333-82.667-157.667\n-152-211l-3-3h399907v-40zM93 281 H400000 v-40L7 241z",
  leftharpoondownplus: "M7 435c-4 4-6.3 8.7-7 14 0 5.3.7 9 2 11s5.3 5.3 12\n 10c90.7 54 156 130 196 228 3.3 10.7 6.3 16.3 9 17 2 .7 5 1 9 1h5c10.7 0 16.7\n-2 18-6 2-2.7 1-9.7-3-21-32-87.3-82.7-157.7-152-211l-3-3h399907v-40H7zm93 0\nv40h399900v-40zM0 241v40h399900v-40zm0 0v40h399900v-40z",
  // hook is from glyph U+21A9 in font KaTeX Main
  lefthook: "M400000 281 H103s-33-11.2-61-33.5S0 197.3 0 164s14.2-61.2 42.5\n-83.5C70.8 58.2 104 47 142 47 c16.7 0 25 6.7 25 20 0 12-8.7 18.7-26 20-40 3.3\n-68.7 15.7-86 37-10 12-15 25.3-15 40 0 22.7 9.8 40.7 29.5 54 19.7 13.3 43.5 21\n 71.5 23h399859zM103 281v-40h399897v40z",
  leftlinesegment: "M40 281 V428 H0 V94 H40 V241 H400000 v40z\nM40 281 V428 H0 V94 H40 V241 H400000 v40z",
  leftmapsto: "M40 281 V448H0V74H40V241H400000v40z\nM40 281 V448H0V74H40V241H400000v40z",
  // tofrom is from glyph U+21C4 in font KaTeX AMS Regular
  leftToFrom: "M0 147h400000v40H0zm0 214c68 40 115.7 95.7 143 167h22c15.3 0 23\n-.3 23-1 0-1.3-5.3-13.7-16-37-18-35.3-41.3-69-70-101l-7-8h399905v-40H95l7-8\nc28.7-32 52-65.7 70-101 10.7-23.3 16-35.7 16-37 0-.7-7.7-1-23-1h-22C115.7 265.3\n 68 321 0 361zm0-174v-40h399900v40zm100 154v40h399900v-40z",
  longequal: "M0 50 h400000 v40H0z m0 194h40000v40H0z\nM0 50 h400000 v40H0z m0 194h40000v40H0z",
  midbrace: "M200428 334\nc-100.7-8.3-195.3-44-280-108-55.3-42-101.7-93-139-153l-9-14c-2.7 4-5.7 8.7-9 14\n-53.3 86.7-123.7 153-211 199-66.7 36-137.3 56.3-212 62H0V214h199568c178.3-11.7\n 311.7-78.3 403-201 6-8 9.7-12 11-12 .7-.7 6.7-1 18-1s17.3.3 18 1c1.3 0 5 4 11\n 12 44.7 59.3 101.3 106.3 170 141s145.3 54.3 229 60h199572v120z",
  midbraceunder: "M199572 214\nc100.7 8.3 195.3 44 280 108 55.3 42 101.7 93 139 153l9 14c2.7-4 5.7-8.7 9-14\n 53.3-86.7 123.7-153 211-199 66.7-36 137.3-56.3 212-62h199568v120H200432c-178.3\n 11.7-311.7 78.3-403 201-6 8-9.7 12-11 12-.7.7-6.7 1-18 1s-17.3-.3-18-1c-1.3 0\n-5-4-11-12-44.7-59.3-101.3-106.3-170-141s-145.3-54.3-229-60H0V214z",
  oiintSize1: "M512.6 71.6c272.6 0 320.3 106.8 320.3 178.2 0 70.8-47.7 177.6\n-320.3 177.6S193.1 320.6 193.1 249.8c0-71.4 46.9-178.2 319.5-178.2z\nm368.1 178.2c0-86.4-60.9-215.4-368.1-215.4-306.4 0-367.3 129-367.3 215.4 0 85.8\n60.9 214.8 367.3 214.8 307.2 0 368.1-129 368.1-214.8z",
  oiintSize2: "M757.8 100.1c384.7 0 451.1 137.6 451.1 230 0 91.3-66.4 228.8\n-451.1 228.8-386.3 0-452.7-137.5-452.7-228.8 0-92.4 66.4-230 452.7-230z\nm502.4 230c0-111.2-82.4-277.2-502.4-277.2s-504 166-504 277.2\nc0 110 84 276 504 276s502.4-166 502.4-276z",
  oiiintSize1: "M681.4 71.6c408.9 0 480.5 106.8 480.5 178.2 0 70.8-71.6 177.6\n-480.5 177.6S202.1 320.6 202.1 249.8c0-71.4 70.5-178.2 479.3-178.2z\nm525.8 178.2c0-86.4-86.8-215.4-525.7-215.4-437.9 0-524.7 129-524.7 215.4 0\n85.8 86.8 214.8 524.7 214.8 438.9 0 525.7-129 525.7-214.8z",
  oiiintSize2: "M1021.2 53c603.6 0 707.8 165.8 707.8 277.2 0 110-104.2 275.8\n-707.8 275.8-606 0-710.2-165.8-710.2-275.8C311 218.8 415.2 53 1021.2 53z\nm770.4 277.1c0-131.2-126.4-327.6-770.5-327.6S248.4 198.9 248.4 330.1\nc0 130 128.8 326.4 772.7 326.4s770.5-196.4 770.5-326.4z",
  rightarrow: "M0 241v40h399891c-47.3 35.3-84 78-110 128\n-16.7 32-27.7 63.7-33 95 0 1.3-.2 2.7-.5 4-.3 1.3-.5 2.3-.5 3 0 7.3 6.7 11 20\n 11 8 0 13.2-.8 15.5-2.5 2.3-1.7 4.2-5.5 5.5-11.5 2-13.3 5.7-27 11-41 14.7-44.7\n 39-84.5 73-119.5s73.7-60.2 119-75.5c6-2 9-5.7 9-11s-3-9-9-11c-45.3-15.3-85\n-40.5-119-75.5s-58.3-74.8-73-119.5c-4.7-14-8.3-27.3-11-40-1.3-6.7-3.2-10.8-5.5\n-12.5-2.3-1.7-7.5-2.5-15.5-2.5-14 0-21 3.7-21 11 0 2 2 10.3 6 25 20.7 83.3 67\n 151.7 139 205zm0 0v40h399900v-40z",
  rightbrace: "M400000 542l\n-6 6h-17c-12.7 0-19.3-.3-20-1-4-4-7.3-8.3-10-13-35.3-51.3-80.8-93.8-136.5-127.5\ns-117.2-55.8-184.5-66.5c-.7 0-2-.3-4-1-18.7-2.7-76-4.3-172-5H0V214h399571l6 1\nc124.7 8 235 61.7 331 161 31.3 33.3 59.7 72.7 85 118l7 13v35z",
  rightbraceunder: "M399994 0l6 6v35l-6 11c-56 104-135.3 181.3-238 232-57.3\n 28.7-117 45-179 50H-300V214h399897c43.3-7 81-15 113-26 100.7-33 179.7-91 237\n-174 2.7-5 6-9 10-13 .7-1 7.3-1 20-1h17z",
  rightgroup: "M0 80h399565c371 0 266.7 149.4 414 180 5.9 1.2 18 0 18 0 2 0\n 3-1 3-3v-38c-76-158-257-219-435-219H0z",
  rightgroupunder: "M0 262h399565c371 0 266.7-149.4 414-180 5.9-1.2 18 0 18\n 0 2 0 3 1 3 3v38c-76 158-257 219-435 219H0z",
  rightharpoon: "M0 241v40h399993c4.7-4.7 7-9.3 7-14 0-9.3\n-3.7-15.3-11-18-92.7-56.7-159-133.7-199-231-3.3-9.3-6-14.7-8-16-2-1.3-7-2-15-2\n-10.7 0-16.7 2-18 6-2 2.7-1 9.7 3 21 15.3 42 36.7 81.8 64 119.5 27.3 37.7 58\n 69.2 92 94.5zm0 0v40h399900v-40z",
  rightharpoonplus: "M0 241v40h399993c4.7-4.7 7-9.3 7-14 0-9.3-3.7-15.3-11\n-18-92.7-56.7-159-133.7-199-231-3.3-9.3-6-14.7-8-16-2-1.3-7-2-15-2-10.7 0-16.7\n 2-18 6-2 2.7-1 9.7 3 21 15.3 42 36.7 81.8 64 119.5 27.3 37.7 58 69.2 92 94.5z\nm0 0v40h399900v-40z m100 194v40h399900v-40zm0 0v40h399900v-40z",
  rightharpoondown: "M399747 511c0 7.3 6.7 11 20 11 8 0 13-.8 15-2.5s4.7-6.8\n 8-15.5c40-94 99.3-166.3 178-217 13.3-8 20.3-12.3 21-13 5.3-3.3 8.5-5.8 9.5\n-7.5 1-1.7 1.5-5.2 1.5-10.5s-2.3-10.3-7-15H0v40h399908c-34 25.3-64.7 57-92 95\n-27.3 38-48.7 77.7-64 119-3.3 8.7-5 14-5 16zM0 241v40h399900v-40z",
  rightharpoondownplus: "M399747 705c0 7.3 6.7 11 20 11 8 0 13-.8\n 15-2.5s4.7-6.8 8-15.5c40-94 99.3-166.3 178-217 13.3-8 20.3-12.3 21-13 5.3-3.3\n 8.5-5.8 9.5-7.5 1-1.7 1.5-5.2 1.5-10.5s-2.3-10.3-7-15H0v40h399908c-34 25.3\n-64.7 57-92 95-27.3 38-48.7 77.7-64 119-3.3 8.7-5 14-5 16zM0 435v40h399900v-40z\nm0-194v40h400000v-40zm0 0v40h400000v-40z",
  righthook: "M399859 241c-764 0 0 0 0 0 40-3.3 68.7-15.7 86-37 10-12 15-25.3\n 15-40 0-22.7-9.8-40.7-29.5-54-19.7-13.3-43.5-21-71.5-23-17.3-1.3-26-8-26-20 0\n-13.3 8.7-20 26-20 38 0 71 11.2 99 33.5 0 0 7 5.6 21 16.7 14 11.2 21 33.5 21\n 66.8s-14 61.2-42 83.5c-28 22.3-61 33.5-99 33.5L0 241z M0 281v-40h399859v40z",
  rightlinesegment: "M399960 241 V94 h40 V428 h-40 V281 H0 v-40z\nM399960 241 V94 h40 V428 h-40 V281 H0 v-40z",
  rightToFrom: "M400000 167c-70.7-42-118-97.7-142-167h-23c-15.3 0-23 .3-23\n 1 0 1.3 5.3 13.7 16 37 18 35.3 41.3 69 70 101l7 8H0v40h399905l-7 8c-28.7 32\n-52 65.7-70 101-10.7 23.3-16 35.7-16 37 0 .7 7.7 1 23 1h23c24-69.3 71.3-125 142\n-167z M100 147v40h399900v-40zM0 341v40h399900v-40z",
  // twoheadleftarrow is from glyph U+219E in font KaTeX AMS Regular
  twoheadleftarrow: "M0 167c68 40\n 115.7 95.7 143 167h22c15.3 0 23-.3 23-1 0-1.3-5.3-13.7-16-37-18-35.3-41.3-69\n-70-101l-7-8h125l9 7c50.7 39.3 85 86 103 140h46c0-4.7-6.3-18.7-19-42-18-35.3\n-40-67.3-66-96l-9-9h399716v-40H284l9-9c26-28.7 48-60.7 66-96 12.7-23.333 19\n-37.333 19-42h-46c-18 54-52.3 100.7-103 140l-9 7H95l7-8c28.7-32 52-65.7 70-101\n 10.7-23.333 16-35.7 16-37 0-.7-7.7-1-23-1h-22C115.7 71.3 68 127 0 167z",
  twoheadrightarrow: "M400000 167\nc-68-40-115.7-95.7-143-167h-22c-15.3 0-23 .3-23 1 0 1.3 5.3 13.7 16 37 18 35.3\n 41.3 69 70 101l7 8h-125l-9-7c-50.7-39.3-85-86-103-140h-46c0 4.7 6.3 18.7 19 42\n 18 35.3 40 67.3 66 96l9 9H0v40h399716l-9 9c-26 28.7-48 60.7-66 96-12.7 23.333\n-19 37.333-19 42h46c18-54 52.3-100.7 103-140l9-7h125l-7 8c-28.7 32-52 65.7-70\n 101-10.7 23.333-16 35.7-16 37 0 .7 7.7 1 23 1h22c27.3-71.3 75-127 143-167z",
  // tilde1 is a modified version of a glyph from the MnSymbol package
  tilde1: "M200 55.538c-77 0-168 73.953-177 73.953-3 0-7\n-2.175-9-5.437L2 97c-1-2-2-4-2-6 0-4 2-7 5-9l20-12C116 12 171 0 207 0c86 0\n 114 68 191 68 78 0 168-68 177-68 4 0 7 2 9 5l12 19c1 2.175 2 4.35 2 6.525 0\n 4.35-2 7.613-5 9.788l-19 13.05c-92 63.077-116.937 75.308-183 76.128\n-68.267.847-113-73.952-191-73.952z",
  // ditto tilde2, tilde3, & tilde4
  tilde2: "M344 55.266c-142 0-300.638 81.316-311.5 86.418\n-8.01 3.762-22.5 10.91-23.5 5.562L1 120c-1-2-1-3-1-4 0-5 3-9 8-10l18.4-9C160.9\n 31.9 283 0 358 0c148 0 188 122 331 122s314-97 326-97c4 0 8 2 10 7l7 21.114\nc1 2.14 1 3.21 1 4.28 0 5.347-3 9.626-7 10.696l-22.3 12.622C852.6 158.372 751\n 181.476 676 181.476c-149 0-189-126.21-332-126.21z",
  tilde3: "M786 59C457 59 32 175.242 13 175.242c-6 0-10-3.457\n-11-10.37L.15 138c-1-7 3-12 10-13l19.2-6.4C378.4 40.7 634.3 0 804.3 0c337 0\n 411.8 157 746.8 157 328 0 754-112 773-112 5 0 10 3 11 9l1 14.075c1 8.066-.697\n 16.595-6.697 17.492l-21.052 7.31c-367.9 98.146-609.15 122.696-778.15 122.696\n -338 0-409-156.573-744-156.573z",
  tilde4: "M786 58C457 58 32 177.487 13 177.487c-6 0-10-3.345\n-11-10.035L.15 143c-1-7 3-12 10-13l22-6.7C381.2 35 637.15 0 807.15 0c337 0 409\n 177 744 177 328 0 754-127 773-127 5 0 10 3 11 9l1 14.794c1 7.805-3 13.38-9\n 14.495l-20.7 5.574c-366.85 99.79-607.3 139.372-776.3 139.372-338 0-409\n -175.236-744-175.236z",
  // vec is from glyph U+20D7 in font KaTeX Main
  vec: "M377 20c0-5.333 1.833-10 5.5-14S391 0 397 0c4.667 0 8.667 1.667 12 5\n3.333 2.667 6.667 9 10 19 6.667 24.667 20.333 43.667 41 57 7.333 4.667 11\n10.667 11 18 0 6-1 10-3 12s-6.667 5-14 9c-28.667 14.667-53.667 35.667-75 63\n-1.333 1.333-3.167 3.5-5.5 6.5s-4 4.833-5 5.5c-1 .667-2.5 1.333-4.5 2s-4.333 1\n-7 1c-4.667 0-9.167-1.833-13.5-5.5S337 184 337 178c0-12.667 15.667-32.333 47-59\nH213l-171-1c-8.667-6-13-12.333-13-19 0-4.667 4.333-11.333 13-20h359\nc-16-25.333-24-45-24-59z",
  // widehat1 is a modified version of a glyph from the MnSymbol package
  widehat1: "M529 0h5l519 115c5 1 9 5 9 10 0 1-1 2-1 3l-4 22\nc-1 5-5 9-11 9h-2L532 67 19 159h-2c-5 0-9-4-11-9l-5-22c-1-6 2-12 8-13z",
  // ditto widehat2, widehat3, & widehat4
  widehat2: "M1181 0h2l1171 176c6 0 10 5 10 11l-2 23c-1 6-5 10\n-11 10h-1L1182 67 15 220h-1c-6 0-10-4-11-10l-2-23c-1-6 4-11 10-11z",
  widehat3: "M1181 0h2l1171 236c6 0 10 5 10 11l-2 23c-1 6-5 10\n-11 10h-1L1182 67 15 280h-1c-6 0-10-4-11-10l-2-23c-1-6 4-11 10-11z",
  widehat4: "M1181 0h2l1171 296c6 0 10 5 10 11l-2 23c-1 6-5 10\n-11 10h-1L1182 67 15 340h-1c-6 0-10-4-11-10l-2-23c-1-6 4-11 10-11z",
  // widecheck paths are all inverted versions of widehat
  widecheck1: "M529,159h5l519,-115c5,-1,9,-5,9,-10c0,-1,-1,-2,-1,-3l-4,-22c-1,\n-5,-5,-9,-11,-9h-2l-512,92l-513,-92h-2c-5,0,-9,4,-11,9l-5,22c-1,6,2,12,8,13z",
  widecheck2: "M1181,220h2l1171,-176c6,0,10,-5,10,-11l-2,-23c-1,-6,-5,-10,\n-11,-10h-1l-1168,153l-1167,-153h-1c-6,0,-10,4,-11,10l-2,23c-1,6,4,11,10,11z",
  widecheck3: "M1181,280h2l1171,-236c6,0,10,-5,10,-11l-2,-23c-1,-6,-5,-10,\n-11,-10h-1l-1168,213l-1167,-213h-1c-6,0,-10,4,-11,10l-2,23c-1,6,4,11,10,11z",
  widecheck4: "M1181,340h2l1171,-296c6,0,10,-5,10,-11l-2,-23c-1,-6,-5,-10,\n-11,-10h-1l-1168,273l-1167,-273h-1c-6,0,-10,4,-11,10l-2,23c-1,6,4,11,10,11z",
  // The next ten paths support reaction arrows from the mhchem package.
  // Arrows for \ce{<-->} are offset from xAxis by 0.22ex, per mhchem in LaTeX
  // baraboveleftarrow is mostly from from glyph U+2190 in font KaTeX Main
  baraboveleftarrow: "M400000 620h-399890l3 -3c68.7 -52.7 113.7 -120 135 -202\nc4 -14.7 6 -23 6 -25c0 -7.3 -7 -11 -21 -11c-8 0 -13.2 0.8 -15.5 2.5\nc-2.3 1.7 -4.2 5.8 -5.5 12.5c-1.3 4.7 -2.7 10.3 -4 17c-12 48.7 -34.8 92 -68.5 130\ns-74.2 66.3 -121.5 85c-10 4 -16 7.7 -18 11c0 8.7 6 14.3 18 17c47.3 18.7 87.8 47\n121.5 85s56.5 81.3 68.5 130c0.7 2 1.3 5 2 9s1.2 6.7 1.5 8c0.3 1.3 1 3.3 2 6\ns2.2 4.5 3.5 5.5c1.3 1 3.3 1.8 6 2.5s6 1 10 1c14 0 21 -3.7 21 -11\nc0 -2 -2 -10.3 -6 -25c-20 -79.3 -65 -146.7 -135 -202l-3 -3h399890z\nM100 241v40h399900v-40z M0 241v40h399900v-40zM0 241v40h399900v-40z",
  // rightarrowabovebar is mostly from glyph U+2192, KaTeX Main
  rightarrowabovebar: "M0 241v40h399891c-47.3 35.3-84 78-110 128-16.7 32\n-27.7 63.7-33 95 0 1.3-.2 2.7-.5 4-.3 1.3-.5 2.3-.5 3 0 7.3 6.7 11 20 11 8 0\n13.2-.8 15.5-2.5 2.3-1.7 4.2-5.5 5.5-11.5 2-13.3 5.7-27 11-41 14.7-44.7 39\n-84.5 73-119.5s73.7-60.2 119-75.5c6-2 9-5.7 9-11s-3-9-9-11c-45.3-15.3-85-40.5\n-119-75.5s-58.3-74.8-73-119.5c-4.7-14-8.3-27.3-11-40-1.3-6.7-3.2-10.8-5.5\n-12.5-2.3-1.7-7.5-2.5-15.5-2.5-14 0-21 3.7-21 11 0 2 2 10.3 6 25 20.7 83.3 67\n151.7 139 205zm96 379h399894v40H0zm0 0h399904v40H0z",
  // The short left harpoon has 0.5em (i.e. 500 units) kern on the left end.
  // Ref from mhchem.sty: \rlap{\raisebox{-.22ex}{$\kern0.5em
  baraboveshortleftharpoon: "M507,435c-4,4,-6.3,8.7,-7,14c0,5.3,0.7,9,2,11\nc1.3,2,5.3,5.3,12,10c90.7,54,156,130,196,228c3.3,10.7,6.3,16.3,9,17\nc2,0.7,5,1,9,1c0,0,5,0,5,0c10.7,0,16.7,-2,18,-6c2,-2.7,1,-9.7,-3,-21\nc-32,-87.3,-82.7,-157.7,-152,-211c0,0,-3,-3,-3,-3l399351,0l0,-40\nc-398570,0,-399437,0,-399437,0z M593 435 v40 H399500 v-40z\nM0 281 v-40 H399908 v40z M0 281 v-40 H399908 v40z",
  rightharpoonaboveshortbar: "M0,241 l0,40c399126,0,399993,0,399993,0\nc4.7,-4.7,7,-9.3,7,-14c0,-9.3,-3.7,-15.3,-11,-18c-92.7,-56.7,-159,-133.7,-199,\n-231c-3.3,-9.3,-6,-14.7,-8,-16c-2,-1.3,-7,-2,-15,-2c-10.7,0,-16.7,2,-18,6\nc-2,2.7,-1,9.7,3,21c15.3,42,36.7,81.8,64,119.5c27.3,37.7,58,69.2,92,94.5z\nM0 241 v40 H399908 v-40z M0 475 v-40 H399500 v40z M0 475 v-40 H399500 v40z",
  shortbaraboveleftharpoon: "M7,435c-4,4,-6.3,8.7,-7,14c0,5.3,0.7,9,2,11\nc1.3,2,5.3,5.3,12,10c90.7,54,156,130,196,228c3.3,10.7,6.3,16.3,9,17c2,0.7,5,1,9,\n1c0,0,5,0,5,0c10.7,0,16.7,-2,18,-6c2,-2.7,1,-9.7,-3,-21c-32,-87.3,-82.7,-157.7,\n-152,-211c0,0,-3,-3,-3,-3l399907,0l0,-40c-399126,0,-399993,0,-399993,0z\nM93 435 v40 H400000 v-40z M500 241 v40 H400000 v-40z M500 241 v40 H400000 v-40z",
  shortrightharpoonabovebar: "M53,241l0,40c398570,0,399437,0,399437,0\nc4.7,-4.7,7,-9.3,7,-14c0,-9.3,-3.7,-15.3,-11,-18c-92.7,-56.7,-159,-133.7,-199,\n-231c-3.3,-9.3,-6,-14.7,-8,-16c-2,-1.3,-7,-2,-15,-2c-10.7,0,-16.7,2,-18,6\nc-2,2.7,-1,9.7,3,21c15.3,42,36.7,81.8,64,119.5c27.3,37.7,58,69.2,92,94.5z\nM500 241 v40 H399408 v-40z M500 435 v40 H400000 v-40z"
};
/* harmony default export */ var svgGeometry = ({
  path: svgGeometry_path
});
// CONCATENATED MODULE: ./src/tree.js


/**
 * This node represents a document fragment, which contains elements, but when
 * placed into the DOM doesn't have any representation itself. It only contains
 * children and doesn't have any DOM node properties.
 */
var tree_DocumentFragment =
/*#__PURE__*/
function () {
  // HtmlDomNode
  // Never used; needed for satisfying interface.
  function DocumentFragment(children) {
    this.children = void 0;
    this.classes = void 0;
    this.height = void 0;
    this.depth = void 0;
    this.maxFontSize = void 0;
    this.style = void 0;
    this.children = children;
    this.classes = [];
    this.height = 0;
    this.depth = 0;
    this.maxFontSize = 0;
    this.style = {};
  }

  var _proto = DocumentFragment.prototype;

  _proto.hasClass = function hasClass(className) {
    return utils.contains(this.classes, className);
  };
  /** Convert the fragment into a node. */


  _proto.toNode = function toNode() {
    var frag = document.createDocumentFragment();

    for (var i = 0; i < this.children.length; i++) {
      frag.appendChild(this.children[i].toNode());
    }

    return frag;
  };
  /** Convert the fragment into HTML markup. */


  _proto.toMarkup = function toMarkup() {
    var markup = ""; // Simply concatenate the markup for the children together.

    for (var i = 0; i < this.children.length; i++) {
      markup += this.children[i].toMarkup();
    }

    return markup;
  };
  /**
   * Converts the math node into a string, similar to innerText. Applies to
   * MathDomNode's only.
   */


  _proto.toText = function toText() {
    // To avoid this, we would subclass documentFragment separately for
    // MathML, but polyfills for subclassing is expensive per PR 1469.
    // $FlowFixMe: Only works for ChildType = MathDomNode.
    var toText = function toText(child) {
      return child.toText();
    };

    return this.children.map(toText).join("");
  };

  return DocumentFragment;
}();
// CONCATENATED MODULE: ./src/domTree.js
/**
 * These objects store the data about the DOM nodes we create, as well as some
 * extra data. They can then be transformed into real DOM nodes with the
 * `toNode` function or HTML markup using `toMarkup`. They are useful for both
 * storing extra properties on the nodes, as well as providing a way to easily
 * work with the DOM.
 *
 * Similar functions for working with MathML nodes exist in mathMLTree.js.
 *
 * TODO: refactor `span` and `anchor` into common superclass when
 * target environments support class inheritance
 */





/**
 * Create an HTML className based on a list of classes. In addition to joining
 * with spaces, we also remove empty classes.
 */
var createClass = function createClass(classes) {
  return classes.filter(function (cls) {
    return cls;
  }).join(" ");
};

var initNode = function initNode(classes, options, style) {
  this.classes = classes || [];
  this.attributes = {};
  this.height = 0;
  this.depth = 0;
  this.maxFontSize = 0;
  this.style = style || {};

  if (options) {
    if (options.style.isTight()) {
      this.classes.push("mtight");
    }

    var color = options.getColor();

    if (color) {
      this.style.color = color;
    }
  }
};
/**
 * Convert into an HTML node
 */


var _toNode = function toNode(tagName) {
  var node = document.createElement(tagName); // Apply the class

  node.className = createClass(this.classes); // Apply inline styles

  for (var style in this.style) {
    if (this.style.hasOwnProperty(style)) {
      // $FlowFixMe Flow doesn't seem to understand span.style's type.
      node.style[style] = this.style[style];
    }
  } // Apply attributes


  for (var attr in this.attributes) {
    if (this.attributes.hasOwnProperty(attr)) {
      node.setAttribute(attr, this.attributes[attr]);
    }
  } // Append the children, also as HTML nodes


  for (var i = 0; i < this.children.length; i++) {
    node.appendChild(this.children[i].toNode());
  }

  return node;
};
/**
 * Convert into an HTML markup string
 */


var _toMarkup = function toMarkup(tagName) {
  var markup = "<" + tagName; // Add the class

  if (this.classes.length) {
    markup += " class=\"" + utils.escape(createClass(this.classes)) + "\"";
  }

  var styles = ""; // Add the styles, after hyphenation

  for (var style in this.style) {
    if (this.style.hasOwnProperty(style)) {
      styles += utils.hyphenate(style) + ":" + this.style[style] + ";";
    }
  }

  if (styles) {
    markup += " style=\"" + utils.escape(styles) + "\"";
  } // Add the attributes


  for (var attr in this.attributes) {
    if (this.attributes.hasOwnProperty(attr)) {
      markup += " " + attr + "=\"" + utils.escape(this.attributes[attr]) + "\"";
    }
  }

  markup += ">"; // Add the markup of the children, also as markup

  for (var i = 0; i < this.children.length; i++) {
    markup += this.children[i].toMarkup();
  }

  markup += "</" + tagName + ">";
  return markup;
}; // Making the type below exact with all optional fields doesn't work due to
// - https://github.com/facebook/flow/issues/4582
// - https://github.com/facebook/flow/issues/5688
// However, since *all* fields are optional, $Shape<> works as suggested in 5688
// above.
// This type does not include all CSS properties. Additional properties should
// be added as needed.


/**
 * This node represents a span node, with a className, a list of children, and
 * an inline style. It also contains information about its height, depth, and
 * maxFontSize.
 *
 * Represents two types with different uses: SvgSpan to wrap an SVG and DomSpan
 * otherwise. This typesafety is important when HTML builders access a span's
 * children.
 */
var domTree_Span =
/*#__PURE__*/
function () {
  function Span(classes, children, options, style) {
    this.children = void 0;
    this.attributes = void 0;
    this.classes = void 0;
    this.height = void 0;
    this.depth = void 0;
    this.width = void 0;
    this.maxFontSize = void 0;
    this.style = void 0;
    initNode.call(this, classes, options, style);
    this.children = children || [];
  }
  /**
   * Sets an arbitrary attribute on the span. Warning: use this wisely. Not
   * all browsers support attributes the same, and having too many custom
   * attributes is probably bad.
   */


  var _proto = Span.prototype;

  _proto.setAttribute = function setAttribute(attribute, value) {
    this.attributes[attribute] = value;
  };

  _proto.hasClass = function hasClass(className) {
    return utils.contains(this.classes, className);
  };

  _proto.toNode = function toNode() {
    return _toNode.call(this, "span");
  };

  _proto.toMarkup = function toMarkup() {
    return _toMarkup.call(this, "span");
  };

  return Span;
}();
/**
 * This node represents an anchor (<a>) element with a hyperlink.  See `span`
 * for further details.
 */

var domTree_Anchor =
/*#__PURE__*/
function () {
  function Anchor(href, classes, children, options) {
    this.children = void 0;
    this.attributes = void 0;
    this.classes = void 0;
    this.height = void 0;
    this.depth = void 0;
    this.maxFontSize = void 0;
    this.style = void 0;
    initNode.call(this, classes, options);
    this.children = children || [];
    this.setAttribute('href', href);
  }

  var _proto2 = Anchor.prototype;

  _proto2.setAttribute = function setAttribute(attribute, value) {
    this.attributes[attribute] = value;
  };

  _proto2.hasClass = function hasClass(className) {
    return utils.contains(this.classes, className);
  };

  _proto2.toNode = function toNode() {
    return _toNode.call(this, "a");
  };

  _proto2.toMarkup = function toMarkup() {
    return _toMarkup.call(this, "a");
  };

  return Anchor;
}();
var iCombinations = {
  'î': "\u0131\u0302",
  'ï': "\u0131\u0308",
  'í': "\u0131\u0301",
  // 'ī': '\u0131\u0304', // enable when we add Extended Latin
  'ì': "\u0131\u0300"
};
/**
 * A symbol node contains information about a single symbol. It either renders
 * to a single text node, or a span with a single text node in it, depending on
 * whether it has CSS classes, styles, or needs italic correction.
 */

var domTree_SymbolNode =
/*#__PURE__*/
function () {
  function SymbolNode(text, height, depth, italic, skew, width, classes, style) {
    this.text = void 0;
    this.height = void 0;
    this.depth = void 0;
    this.italic = void 0;
    this.skew = void 0;
    this.width = void 0;
    this.maxFontSize = void 0;
    this.classes = void 0;
    this.style = void 0;
    this.text = text;
    this.height = height || 0;
    this.depth = depth || 0;
    this.italic = italic || 0;
    this.skew = skew || 0;
    this.width = width || 0;
    this.classes = classes || [];
    this.style = style || {};
    this.maxFontSize = 0; // Mark text from non-Latin scripts with specific classes so that we
    // can specify which fonts to use.  This allows us to render these
    // characters with a serif font in situations where the browser would
    // either default to a sans serif or render a placeholder character.
    // We use CSS class names like cjk_fallback, hangul_fallback and
    // brahmic_fallback. See ./unicodeScripts.js for the set of possible
    // script names

    var script = scriptFromCodepoint(this.text.charCodeAt(0));

    if (script) {
      this.classes.push(script + "_fallback");
    }

    if (/[îïíì]/.test(this.text)) {
      // add ī when we add Extended Latin
      this.text = iCombinations[this.text];
    }
  }

  var _proto3 = SymbolNode.prototype;

  _proto3.hasClass = function hasClass(className) {
    return utils.contains(this.classes, className);
  };
  /**
   * Creates a text node or span from a symbol node. Note that a span is only
   * created if it is needed.
   */


  _proto3.toNode = function toNode() {
    var node = document.createTextNode(this.text);
    var span = null;

    if (this.italic > 0) {
      span = document.createElement("span");
      span.style.marginRight = this.italic + "em";
    }

    if (this.classes.length > 0) {
      span = span || document.createElement("span");
      span.className = createClass(this.classes);
    }

    for (var style in this.style) {
      if (this.style.hasOwnProperty(style)) {
        span = span || document.createElement("span"); // $FlowFixMe Flow doesn't seem to understand span.style's type.

        span.style[style] = this.style[style];
      }
    }

    if (span) {
      span.appendChild(node);
      return span;
    } else {
      return node;
    }
  };
  /**
   * Creates markup for a symbol node.
   */


  _proto3.toMarkup = function toMarkup() {
    // TODO(alpert): More duplication than I'd like from
    // span.prototype.toMarkup and symbolNode.prototype.toNode...
    var needsSpan = false;
    var markup = "<span";

    if (this.classes.length) {
      needsSpan = true;
      markup += " class=\"";
      markup += utils.escape(createClass(this.classes));
      markup += "\"";
    }

    var styles = "";

    if (this.italic > 0) {
      styles += "margin-right:" + this.italic + "em;";
    }

    for (var style in this.style) {
      if (this.style.hasOwnProperty(style)) {
        styles += utils.hyphenate(style) + ":" + this.style[style] + ";";
      }
    }

    if (styles) {
      needsSpan = true;
      markup += " style=\"" + utils.escape(styles) + "\"";
    }

    var escaped = utils.escape(this.text);

    if (needsSpan) {
      markup += ">";
      markup += escaped;
      markup += "</span>";
      return markup;
    } else {
      return escaped;
    }
  };

  return SymbolNode;
}();
/**
 * SVG nodes are used to render stretchy wide elements.
 */

var SvgNode =
/*#__PURE__*/
function () {
  function SvgNode(children, attributes) {
    this.children = void 0;
    this.attributes = void 0;
    this.children = children || [];
    this.attributes = attributes || {};
  }

  var _proto4 = SvgNode.prototype;

  _proto4.toNode = function toNode() {
    var svgNS = "http://www.w3.org/2000/svg";
    var node = document.createElementNS(svgNS, "svg"); // Apply attributes

    for (var attr in this.attributes) {
      if (Object.prototype.hasOwnProperty.call(this.attributes, attr)) {
        node.setAttribute(attr, this.attributes[attr]);
      }
    }

    for (var i = 0; i < this.children.length; i++) {
      node.appendChild(this.children[i].toNode());
    }

    return node;
  };

  _proto4.toMarkup = function toMarkup() {
    var markup = "<svg"; // Apply attributes

    for (var attr in this.attributes) {
      if (Object.prototype.hasOwnProperty.call(this.attributes, attr)) {
        markup += " " + attr + "='" + this.attributes[attr] + "'";
      }
    }

    markup += ">";

    for (var i = 0; i < this.children.length; i++) {
      markup += this.children[i].toMarkup();
    }

    markup += "</svg>";
    return markup;
  };

  return SvgNode;
}();
var domTree_PathNode =
/*#__PURE__*/
function () {
  function PathNode(pathName, alternate) {
    this.pathName = void 0;
    this.alternate = void 0;
    this.pathName = pathName;
    this.alternate = alternate; // Used only for tall \sqrt
  }

  var _proto5 = PathNode.prototype;

  _proto5.toNode = function toNode() {
    var svgNS = "http://www.w3.org/2000/svg";
    var node = document.createElementNS(svgNS, "path");

    if (this.alternate) {
      node.setAttribute("d", this.alternate);
    } else {
      node.setAttribute("d", svgGeometry.path[this.pathName]);
    }

    return node;
  };

  _proto5.toMarkup = function toMarkup() {
    if (this.alternate) {
      return "<path d='" + this.alternate + "'/>";
    } else {
      return "<path d='" + svgGeometry.path[this.pathName] + "'/>";
    }
  };

  return PathNode;
}();
var LineNode =
/*#__PURE__*/
function () {
  function LineNode(attributes) {
    this.attributes = void 0;
    this.attributes = attributes || {};
  }

  var _proto6 = LineNode.prototype;

  _proto6.toNode = function toNode() {
    var svgNS = "http://www.w3.org/2000/svg";
    var node = document.createElementNS(svgNS, "line"); // Apply attributes

    for (var attr in this.attributes) {
      if (Object.prototype.hasOwnProperty.call(this.attributes, attr)) {
        node.setAttribute(attr, this.attributes[attr]);
      }
    }

    return node;
  };

  _proto6.toMarkup = function toMarkup() {
    var markup = "<line";

    for (var attr in this.attributes) {
      if (Object.prototype.hasOwnProperty.call(this.attributes, attr)) {
        markup += " " + attr + "='" + this.attributes[attr] + "'";
      }
    }

    markup += "/>";
    return markup;
  };

  return LineNode;
}();
function assertSymbolDomNode(group) {
  if (group instanceof domTree_SymbolNode) {
    return group;
  } else {
    throw new Error("Expected symbolNode but got " + String(group) + ".");
  }
}
function assertSpan(group) {
  if (group instanceof domTree_Span) {
    return group;
  } else {
    throw new Error("Expected span<HtmlDomNode> but got " + String(group) + ".");
  }
}
// CONCATENATED MODULE: ./submodules/katex-fonts/fontMetricsData.js
// This file is GENERATED by buildMetrics.sh. DO NOT MODIFY.
/* harmony default export */ var fontMetricsData = ({
  "AMS-Regular": {
    "65": [0, 0.68889, 0, 0, 0.72222],
    "66": [0, 0.68889, 0, 0, 0.66667],
    "67": [0, 0.68889, 0, 0, 0.72222],
    "68": [0, 0.68889, 0, 0, 0.72222],
    "69": [0, 0.68889, 0, 0, 0.66667],
    "70": [0, 0.68889, 0, 0, 0.61111],
    "71": [0, 0.68889, 0, 0, 0.77778],
    "72": [0, 0.68889, 0, 0, 0.77778],
    "73": [0, 0.68889, 0, 0, 0.38889],
    "74": [0.16667, 0.68889, 0, 0, 0.5],
    "75": [0, 0.68889, 0, 0, 0.77778],
    "76": [0, 0.68889, 0, 0, 0.66667],
    "77": [0, 0.68889, 0, 0, 0.94445],
    "78": [0, 0.68889, 0, 0, 0.72222],
    "79": [0.16667, 0.68889, 0, 0, 0.77778],
    "80": [0, 0.68889, 0, 0, 0.61111],
    "81": [0.16667, 0.68889, 0, 0, 0.77778],
    "82": [0, 0.68889, 0, 0, 0.72222],
    "83": [0, 0.68889, 0, 0, 0.55556],
    "84": [0, 0.68889, 0, 0, 0.66667],
    "85": [0, 0.68889, 0, 0, 0.72222],
    "86": [0, 0.68889, 0, 0, 0.72222],
    "87": [0, 0.68889, 0, 0, 1.0],
    "88": [0, 0.68889, 0, 0, 0.72222],
    "89": [0, 0.68889, 0, 0, 0.72222],
    "90": [0, 0.68889, 0, 0, 0.66667],
    "107": [0, 0.68889, 0, 0, 0.55556],
    "165": [0, 0.675, 0.025, 0, 0.75],
    "174": [0.15559, 0.69224, 0, 0, 0.94666],
    "240": [0, 0.68889, 0, 0, 0.55556],
    "295": [0, 0.68889, 0, 0, 0.54028],
    "710": [0, 0.825, 0, 0, 2.33334],
    "732": [0, 0.9, 0, 0, 2.33334],
    "770": [0, 0.825, 0, 0, 2.33334],
    "771": [0, 0.9, 0, 0, 2.33334],
    "989": [0.08167, 0.58167, 0, 0, 0.77778],
    "1008": [0, 0.43056, 0.04028, 0, 0.66667],
    "8245": [0, 0.54986, 0, 0, 0.275],
    "8463": [0, 0.68889, 0, 0, 0.54028],
    "8487": [0, 0.68889, 0, 0, 0.72222],
    "8498": [0, 0.68889, 0, 0, 0.55556],
    "8502": [0, 0.68889, 0, 0, 0.66667],
    "8503": [0, 0.68889, 0, 0, 0.44445],
    "8504": [0, 0.68889, 0, 0, 0.66667],
    "8513": [0, 0.68889, 0, 0, 0.63889],
    "8592": [-0.03598, 0.46402, 0, 0, 0.5],
    "8594": [-0.03598, 0.46402, 0, 0, 0.5],
    "8602": [-0.13313, 0.36687, 0, 0, 1.0],
    "8603": [-0.13313, 0.36687, 0, 0, 1.0],
    "8606": [0.01354, 0.52239, 0, 0, 1.0],
    "8608": [0.01354, 0.52239, 0, 0, 1.0],
    "8610": [0.01354, 0.52239, 0, 0, 1.11111],
    "8611": [0.01354, 0.52239, 0, 0, 1.11111],
    "8619": [0, 0.54986, 0, 0, 1.0],
    "8620": [0, 0.54986, 0, 0, 1.0],
    "8621": [-0.13313, 0.37788, 0, 0, 1.38889],
    "8622": [-0.13313, 0.36687, 0, 0, 1.0],
    "8624": [0, 0.69224, 0, 0, 0.5],
    "8625": [0, 0.69224, 0, 0, 0.5],
    "8630": [0, 0.43056, 0, 0, 1.0],
    "8631": [0, 0.43056, 0, 0, 1.0],
    "8634": [0.08198, 0.58198, 0, 0, 0.77778],
    "8635": [0.08198, 0.58198, 0, 0, 0.77778],
    "8638": [0.19444, 0.69224, 0, 0, 0.41667],
    "8639": [0.19444, 0.69224, 0, 0, 0.41667],
    "8642": [0.19444, 0.69224, 0, 0, 0.41667],
    "8643": [0.19444, 0.69224, 0, 0, 0.41667],
    "8644": [0.1808, 0.675, 0, 0, 1.0],
    "8646": [0.1808, 0.675, 0, 0, 1.0],
    "8647": [0.1808, 0.675, 0, 0, 1.0],
    "8648": [0.19444, 0.69224, 0, 0, 0.83334],
    "8649": [0.1808, 0.675, 0, 0, 1.0],
    "8650": [0.19444, 0.69224, 0, 0, 0.83334],
    "8651": [0.01354, 0.52239, 0, 0, 1.0],
    "8652": [0.01354, 0.52239, 0, 0, 1.0],
    "8653": [-0.13313, 0.36687, 0, 0, 1.0],
    "8654": [-0.13313, 0.36687, 0, 0, 1.0],
    "8655": [-0.13313, 0.36687, 0, 0, 1.0],
    "8666": [0.13667, 0.63667, 0, 0, 1.0],
    "8667": [0.13667, 0.63667, 0, 0, 1.0],
    "8669": [-0.13313, 0.37788, 0, 0, 1.0],
    "8672": [-0.064, 0.437, 0, 0, 1.334],
    "8674": [-0.064, 0.437, 0, 0, 1.334],
    "8705": [0, 0.825, 0, 0, 0.5],
    "8708": [0, 0.68889, 0, 0, 0.55556],
    "8709": [0.08167, 0.58167, 0, 0, 0.77778],
    "8717": [0, 0.43056, 0, 0, 0.42917],
    "8722": [-0.03598, 0.46402, 0, 0, 0.5],
    "8724": [0.08198, 0.69224, 0, 0, 0.77778],
    "8726": [0.08167, 0.58167, 0, 0, 0.77778],
    "8733": [0, 0.69224, 0, 0, 0.77778],
    "8736": [0, 0.69224, 0, 0, 0.72222],
    "8737": [0, 0.69224, 0, 0, 0.72222],
    "8738": [0.03517, 0.52239, 0, 0, 0.72222],
    "8739": [0.08167, 0.58167, 0, 0, 0.22222],
    "8740": [0.25142, 0.74111, 0, 0, 0.27778],
    "8741": [0.08167, 0.58167, 0, 0, 0.38889],
    "8742": [0.25142, 0.74111, 0, 0, 0.5],
    "8756": [0, 0.69224, 0, 0, 0.66667],
    "8757": [0, 0.69224, 0, 0, 0.66667],
    "8764": [-0.13313, 0.36687, 0, 0, 0.77778],
    "8765": [-0.13313, 0.37788, 0, 0, 0.77778],
    "8769": [-0.13313, 0.36687, 0, 0, 0.77778],
    "8770": [-0.03625, 0.46375, 0, 0, 0.77778],
    "8774": [0.30274, 0.79383, 0, 0, 0.77778],
    "8776": [-0.01688, 0.48312, 0, 0, 0.77778],
    "8778": [0.08167, 0.58167, 0, 0, 0.77778],
    "8782": [0.06062, 0.54986, 0, 0, 0.77778],
    "8783": [0.06062, 0.54986, 0, 0, 0.77778],
    "8785": [0.08198, 0.58198, 0, 0, 0.77778],
    "8786": [0.08198, 0.58198, 0, 0, 0.77778],
    "8787": [0.08198, 0.58198, 0, 0, 0.77778],
    "8790": [0, 0.69224, 0, 0, 0.77778],
    "8791": [0.22958, 0.72958, 0, 0, 0.77778],
    "8796": [0.08198, 0.91667, 0, 0, 0.77778],
    "8806": [0.25583, 0.75583, 0, 0, 0.77778],
    "8807": [0.25583, 0.75583, 0, 0, 0.77778],
    "8808": [0.25142, 0.75726, 0, 0, 0.77778],
    "8809": [0.25142, 0.75726, 0, 0, 0.77778],
    "8812": [0.25583, 0.75583, 0, 0, 0.5],
    "8814": [0.20576, 0.70576, 0, 0, 0.77778],
    "8815": [0.20576, 0.70576, 0, 0, 0.77778],
    "8816": [0.30274, 0.79383, 0, 0, 0.77778],
    "8817": [0.30274, 0.79383, 0, 0, 0.77778],
    "8818": [0.22958, 0.72958, 0, 0, 0.77778],
    "8819": [0.22958, 0.72958, 0, 0, 0.77778],
    "8822": [0.1808, 0.675, 0, 0, 0.77778],
    "8823": [0.1808, 0.675, 0, 0, 0.77778],
    "8828": [0.13667, 0.63667, 0, 0, 0.77778],
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    "113": [0.22222, 0.43056, 0, 0, 0.525],
    "114": [0, 0.43056, 0, 0, 0.525],
    "115": [0, 0.43056, 0, 0, 0.525],
    "116": [0, 0.55358, 0, 0, 0.525],
    "117": [0, 0.43056, 0, 0, 0.525],
    "118": [0, 0.43056, 0, 0, 0.525],
    "119": [0, 0.43056, 0, 0, 0.525],
    "120": [0, 0.43056, 0, 0, 0.525],
    "121": [0.22222, 0.43056, 0, 0, 0.525],
    "122": [0, 0.43056, 0, 0, 0.525],
    "123": [0.08333, 0.69444, 0, 0, 0.525],
    "124": [0.08333, 0.69444, 0, 0, 0.525],
    "125": [0.08333, 0.69444, 0, 0, 0.525],
    "126": [0, 0.61111, 0, 0, 0.525],
    "127": [0, 0.61111, 0, 0, 0.525],
    "160": [0, 0, 0, 0, 0.525],
    "176": [0, 0.61111, 0, 0, 0.525],
    "184": [0.19445, 0, 0, 0, 0.525],
    "305": [0, 0.43056, 0, 0, 0.525],
    "567": [0.22222, 0.43056, 0, 0, 0.525],
    "711": [0, 0.56597, 0, 0, 0.525],
    "713": [0, 0.56555, 0, 0, 0.525],
    "714": [0, 0.61111, 0, 0, 0.525],
    "715": [0, 0.61111, 0, 0, 0.525],
    "728": [0, 0.61111, 0, 0, 0.525],
    "730": [0, 0.61111, 0, 0, 0.525],
    "770": [0, 0.61111, 0, 0, 0.525],
    "771": [0, 0.61111, 0, 0, 0.525],
    "776": [0, 0.61111, 0, 0, 0.525],
    "915": [0, 0.61111, 0, 0, 0.525],
    "916": [0, 0.61111, 0, 0, 0.525],
    "920": [0, 0.61111, 0, 0, 0.525],
    "923": [0, 0.61111, 0, 0, 0.525],
    "926": [0, 0.61111, 0, 0, 0.525],
    "928": [0, 0.61111, 0, 0, 0.525],
    "931": [0, 0.61111, 0, 0, 0.525],
    "933": [0, 0.61111, 0, 0, 0.525],
    "934": [0, 0.61111, 0, 0, 0.525],
    "936": [0, 0.61111, 0, 0, 0.525],
    "937": [0, 0.61111, 0, 0, 0.525],
    "8216": [0, 0.61111, 0, 0, 0.525],
    "8217": [0, 0.61111, 0, 0, 0.525],
    "8242": [0, 0.61111, 0, 0, 0.525],
    "9251": [0.11111, 0.21944, 0, 0, 0.525]
  }
});
// CONCATENATED MODULE: ./src/fontMetrics.js


/**
 * This file contains metrics regarding fonts and individual symbols. The sigma
 * and xi variables, as well as the metricMap map contain data extracted from
 * TeX, TeX font metrics, and the TTF files. These data are then exposed via the
 * `metrics` variable and the getCharacterMetrics function.
 */
// In TeX, there are actually three sets of dimensions, one for each of
// textstyle (size index 5 and higher: >=9pt), scriptstyle (size index 3 and 4:
// 7-8pt), and scriptscriptstyle (size index 1 and 2: 5-6pt).  These are
// provided in the the arrays below, in that order.
//
// The font metrics are stored in fonts cmsy10, cmsy7, and cmsy5 respsectively.
// This was determined by running the following script:
//
//     latex -interaction=nonstopmode \
//     '\documentclass{article}\usepackage{amsmath}\begin{document}' \
//     '$a$ \expandafter\show\the\textfont2' \
//     '\expandafter\show\the\scriptfont2' \
//     '\expandafter\show\the\scriptscriptfont2' \
//     '\stop'
//
// The metrics themselves were retreived using the following commands:
//
//     tftopl cmsy10
//     tftopl cmsy7
//     tftopl cmsy5
//
// The output of each of these commands is quite lengthy.  The only part we
// care about is the FONTDIMEN section. Each value is measured in EMs.
var sigmasAndXis = {
  slant: [0.250, 0.250, 0.250],
  // sigma1
  space: [0.000, 0.000, 0.000],
  // sigma2
  stretch: [0.000, 0.000, 0.000],
  // sigma3
  shrink: [0.000, 0.000, 0.000],
  // sigma4
  xHeight: [0.431, 0.431, 0.431],
  // sigma5
  quad: [1.000, 1.171, 1.472],
  // sigma6
  extraSpace: [0.000, 0.000, 0.000],
  // sigma7
  num1: [0.677, 0.732, 0.925],
  // sigma8
  num2: [0.394, 0.384, 0.387],
  // sigma9
  num3: [0.444, 0.471, 0.504],
  // sigma10
  denom1: [0.686, 0.752, 1.025],
  // sigma11
  denom2: [0.345, 0.344, 0.532],
  // sigma12
  sup1: [0.413, 0.503, 0.504],
  // sigma13
  sup2: [0.363, 0.431, 0.404],
  // sigma14
  sup3: [0.289, 0.286, 0.294],
  // sigma15
  sub1: [0.150, 0.143, 0.200],
  // sigma16
  sub2: [0.247, 0.286, 0.400],
  // sigma17
  supDrop: [0.386, 0.353, 0.494],
  // sigma18
  subDrop: [0.050, 0.071, 0.100],
  // sigma19
  delim1: [2.390, 1.700, 1.980],
  // sigma20
  delim2: [1.010, 1.157, 1.420],
  // sigma21
  axisHeight: [0.250, 0.250, 0.250],
  // sigma22
  // These font metrics are extracted from TeX by using tftopl on cmex10.tfm;
  // they correspond to the font parameters of the extension fonts (family 3).
  // See the TeXbook, page 441. In AMSTeX, the extension fonts scale; to
  // match cmex7, we'd use cmex7.tfm values for script and scriptscript
  // values.
  defaultRuleThickness: [0.04, 0.049, 0.049],
  // xi8; cmex7: 0.049
  bigOpSpacing1: [0.111, 0.111, 0.111],
  // xi9
  bigOpSpacing2: [0.166, 0.166, 0.166],
  // xi10
  bigOpSpacing3: [0.2, 0.2, 0.2],
  // xi11
  bigOpSpacing4: [0.6, 0.611, 0.611],
  // xi12; cmex7: 0.611
  bigOpSpacing5: [0.1, 0.143, 0.143],
  // xi13; cmex7: 0.143
  // The \sqrt rule width is taken from the height of the surd character.
  // Since we use the same font at all sizes, this thickness doesn't scale.
  sqrtRuleThickness: [0.04, 0.04, 0.04],
  // This value determines how large a pt is, for metrics which are defined
  // in terms of pts.
  // This value is also used in katex.less; if you change it make sure the
  // values match.
  ptPerEm: [10.0, 10.0, 10.0],
  // The space between adjacent `|` columns in an array definition. From
  // `\showthe\doublerulesep` in LaTeX. Equals 2.0 / ptPerEm.
  doubleRuleSep: [0.2, 0.2, 0.2]
}; // This map contains a mapping from font name and character code to character
// metrics, including height, depth, italic correction, and skew (kern from the
// character to the corresponding \skewchar)
// This map is generated via `make metrics`. It should not be changed manually.

 // These are very rough approximations.  We default to Times New Roman which
// should have Latin-1 and Cyrillic characters, but may not depending on the
// operating system.  The metrics do not account for extra height from the
// accents.  In the case of Cyrillic characters which have both ascenders and
// descenders we prefer approximations with ascenders, primarily to prevent
// the fraction bar or root line from intersecting the glyph.
// TODO(kevinb) allow union of multiple glyph metrics for better accuracy.

var extraCharacterMap = {
  // Latin-1
  'Å': 'A',
  'Ç': 'C',
  'Ð': 'D',
  'Þ': 'o',
  'å': 'a',
  'ç': 'c',
  'ð': 'd',
  'þ': 'o',
  // Cyrillic
  'А': 'A',
  'Б': 'B',
  'В': 'B',
  'Г': 'F',
  'Д': 'A',
  'Е': 'E',
  'Ж': 'K',
  'З': '3',
  'И': 'N',
  'Й': 'N',
  'К': 'K',
  'Л': 'N',
  'М': 'M',
  'Н': 'H',
  'О': 'O',
  'П': 'N',
  'Р': 'P',
  'С': 'C',
  'Т': 'T',
  'У': 'y',
  'Ф': 'O',
  'Х': 'X',
  'Ц': 'U',
  'Ч': 'h',
  'Ш': 'W',
  'Щ': 'W',
  'Ъ': 'B',
  'Ы': 'X',
  'Ь': 'B',
  'Э': '3',
  'Ю': 'X',
  'Я': 'R',
  'а': 'a',
  'б': 'b',
  'в': 'a',
  'г': 'r',
  'д': 'y',
  'е': 'e',
  'ж': 'm',
  'з': 'e',
  'и': 'n',
  'й': 'n',
  'к': 'n',
  'л': 'n',
  'м': 'm',
  'н': 'n',
  'о': 'o',
  'п': 'n',
  'р': 'p',
  'с': 'c',
  'т': 'o',
  'у': 'y',
  'ф': 'b',
  'х': 'x',
  'ц': 'n',
  'ч': 'n',
  'ш': 'w',
  'щ': 'w',
  'ъ': 'a',
  'ы': 'm',
  'ь': 'a',
  'э': 'e',
  'ю': 'm',
  'я': 'r'
};

/**
 * This function adds new font metrics to default metricMap
 * It can also override existing metrics
 */
function setFontMetrics(fontName, metrics) {
  fontMetricsData[fontName] = metrics;
}
/**
 * This function is a convenience function for looking up information in the
 * metricMap table. It takes a character as a string, and a font.
 *
 * Note: the `width` property may be undefined if fontMetricsData.js wasn't
 * built using `Make extended_metrics`.
 */

function getCharacterMetrics(character, font, mode) {
  if (!fontMetricsData[font]) {
    throw new Error("Font metrics not found for font: " + font + ".");
  }

  var ch = character.charCodeAt(0);

  if (character[0] in extraCharacterMap) {
    ch = extraCharacterMap[character[0]].charCodeAt(0);
  }

  var metrics = fontMetricsData[font][ch];

  if (!metrics && mode === 'text') {
    // We don't typically have font metrics for Asian scripts.
    // But since we support them in text mode, we need to return
    // some sort of metrics.
    // So if the character is in a script we support but we
    // don't have metrics for it, just use the metrics for
    // the Latin capital letter M. This is close enough because
    // we (currently) only care about the height of the glpyh
    // not its width.
    if (supportedCodepoint(ch)) {
      metrics = fontMetricsData[font][77]; // 77 is the charcode for 'M'
    }
  }

  if (metrics) {
    return {
      depth: metrics[0],
      height: metrics[1],
      italic: metrics[2],
      skew: metrics[3],
      width: metrics[4]
    };
  }
}
var fontMetricsBySizeIndex = {};
/**
 * Get the font metrics for a given size.
 */

function getGlobalMetrics(size) {
  var sizeIndex;

  if (size >= 5) {
    sizeIndex = 0;
  } else if (size >= 3) {
    sizeIndex = 1;
  } else {
    sizeIndex = 2;
  }

  if (!fontMetricsBySizeIndex[sizeIndex]) {
    var metrics = fontMetricsBySizeIndex[sizeIndex] = {
      cssEmPerMu: sigmasAndXis.quad[sizeIndex] / 18
    };

    for (var key in sigmasAndXis) {
      if (sigmasAndXis.hasOwnProperty(key)) {
        metrics[key] = sigmasAndXis[key][sizeIndex];
      }
    }
  }

  return fontMetricsBySizeIndex[sizeIndex];
}
// CONCATENATED MODULE: ./src/symbols.js
/**
 * This file holds a list of all no-argument functions and single-character
 * symbols (like 'a' or ';').
 *
 * For each of the symbols, there are three properties they can have:
 * - font (required): the font to be used for this symbol. Either "main" (the
     normal font), or "ams" (the ams fonts).
 * - group (required): the ParseNode group type the symbol should have (i.e.
     "textord", "mathord", etc).
     See https://github.com/Khan/KaTeX/wiki/Examining-TeX#group-types
 * - replace: the character that this symbol or function should be
 *   replaced with (i.e. "\phi" has a replace value of "\u03d5", the phi
 *   character in the main font).
 *
 * The outermost map in the table indicates what mode the symbols should be
 * accepted in (e.g. "math" or "text").
 */
// Some of these have a "-token" suffix since these are also used as `ParseNode`
// types for raw text tokens, and we want to avoid conflicts with higher-level
// `ParseNode` types. These `ParseNode`s are constructed within `Parser` by
// looking up the `symbols` map.
var ATOMS = {
  "bin": 1,
  "close": 1,
  "inner": 1,
  "open": 1,
  "punct": 1,
  "rel": 1
};
var NON_ATOMS = {
  "accent-token": 1,
  "mathord": 1,
  "op-token": 1,
  "spacing": 1,
  "textord": 1
};
var symbols = {
  "math": {},
  "text": {}
};
/* harmony default export */ var src_symbols = (symbols);
/** `acceptUnicodeChar = true` is only applicable if `replace` is set. */

function defineSymbol(mode, font, group, replace, name, acceptUnicodeChar) {
  symbols[mode][name] = {
    font: font,
    group: group,
    replace: replace
  };

  if (acceptUnicodeChar && replace) {
    symbols[mode][replace] = symbols[mode][name];
  }
} // Some abbreviations for commonly used strings.
// This helps minify the code, and also spotting typos using jshint.
// modes:

var symbols_math = "math";
var symbols_text = "text"; // fonts:

var main = "main";
var ams = "ams"; // groups:

var symbols_accent = "accent-token";
var bin = "bin";
var symbols_close = "close";
var symbols_inner = "inner";
var mathord = "mathord";
var op = "op-token";
var symbols_open = "open";
var punct = "punct";
var rel = "rel";
var spacing = "spacing";
var symbols_textord = "textord"; // Now comes the symbol table
// Relation Symbols

defineSymbol(symbols_math, main, rel, "\u2261", "\\equiv", true);
defineSymbol(symbols_math, main, rel, "\u227A", "\\prec", true);
defineSymbol(symbols_math, main, rel, "\u227B", "\\succ", true);
defineSymbol(symbols_math, main, rel, "\u223C", "\\sim", true);
defineSymbol(symbols_math, main, rel, "\u22A5", "\\perp");
defineSymbol(symbols_math, main, rel, "\u2AAF", "\\preceq", true);
defineSymbol(symbols_math, main, rel, "\u2AB0", "\\succeq", true);
defineSymbol(symbols_math, main, rel, "\u2243", "\\simeq", true);
defineSymbol(symbols_math, main, rel, "\u2223", "\\mid", true);
defineSymbol(symbols_math, main, rel, "\u226A", "\\ll", true);
defineSymbol(symbols_math, main, rel, "\u226B", "\\gg", true);
defineSymbol(symbols_math, main, rel, "\u224D", "\\asymp", true);
defineSymbol(symbols_math, main, rel, "\u2225", "\\parallel");
defineSymbol(symbols_math, main, rel, "\u22C8", "\\bowtie", true);
defineSymbol(symbols_math, main, rel, "\u2323", "\\smile", true);
defineSymbol(symbols_math, main, rel, "\u2291", "\\sqsubseteq", true);
defineSymbol(symbols_math, main, rel, "\u2292", "\\sqsupseteq", true);
defineSymbol(symbols_math, main, rel, "\u2250", "\\doteq", true);
defineSymbol(symbols_math, main, rel, "\u2322", "\\frown", true);
defineSymbol(symbols_math, main, rel, "\u220B", "\\ni", true);
defineSymbol(symbols_math, main, rel, "\u221D", "\\propto", true);
defineSymbol(symbols_math, main, rel, "\u22A2", "\\vdash", true);
defineSymbol(symbols_math, main, rel, "\u22A3", "\\dashv", true);
defineSymbol(symbols_math, main, rel, "\u220B", "\\owns"); // Punctuation

defineSymbol(symbols_math, main, punct, ".", "\\ldotp");
defineSymbol(symbols_math, main, punct, "\u22C5", "\\cdotp"); // Misc Symbols

defineSymbol(symbols_math, main, symbols_textord, "#", "\\#");
defineSymbol(symbols_text, main, symbols_textord, "#", "\\#");
defineSymbol(symbols_math, main, symbols_textord, "&", "\\&");
defineSymbol(symbols_text, main, symbols_textord, "&", "\\&");
defineSymbol(symbols_math, main, symbols_textord, "\u2135", "\\aleph", true);
defineSymbol(symbols_math, main, symbols_textord, "\u2200", "\\forall", true);
defineSymbol(symbols_math, main, symbols_textord, "\u210F", "\\hbar", true);
defineSymbol(symbols_math, main, symbols_textord, "\u2203", "\\exists", true);
defineSymbol(symbols_math, main, symbols_textord, "\u2207", "\\nabla", true);
defineSymbol(symbols_math, main, symbols_textord, "\u266D", "\\flat", true);
defineSymbol(symbols_math, main, symbols_textord, "\u2113", "\\ell", true);
defineSymbol(symbols_math, main, symbols_textord, "\u266E", "\\natural", true);
defineSymbol(symbols_math, main, symbols_textord, "\u2663", "\\clubsuit", true);
defineSymbol(symbols_math, main, symbols_textord, "\u2118", "\\wp", true);
defineSymbol(symbols_math, main, symbols_textord, "\u266F", "\\sharp", true);
defineSymbol(symbols_math, main, symbols_textord, "\u2662", "\\diamondsuit", true);
defineSymbol(symbols_math, main, symbols_textord, "\u211C", "\\Re", true);
defineSymbol(symbols_math, main, symbols_textord, "\u2661", "\\heartsuit", true);
defineSymbol(symbols_math, main, symbols_textord, "\u2111", "\\Im", true);
defineSymbol(symbols_math, main, symbols_textord, "\u2660", "\\spadesuit", true);
defineSymbol(symbols_text, main, symbols_textord, "\xA7", "\\S", true);
defineSymbol(symbols_text, main, symbols_textord, "\xB6", "\\P", true); // Math and Text

defineSymbol(symbols_math, main, symbols_textord, "\u2020", "\\dag");
defineSymbol(symbols_text, main, symbols_textord, "\u2020", "\\dag");
defineSymbol(symbols_text, main, symbols_textord, "\u2020", "\\textdagger");
defineSymbol(symbols_math, main, symbols_textord, "\u2021", "\\ddag");
defineSymbol(symbols_text, main, symbols_textord, "\u2021", "\\ddag");
defineSymbol(symbols_text, main, symbols_textord, "\u2021", "\\textdaggerdbl"); // Large Delimiters

defineSymbol(symbols_math, main, symbols_close, "\u23B1", "\\rmoustache", true);
defineSymbol(symbols_math, main, symbols_open, "\u23B0", "\\lmoustache", true);
defineSymbol(symbols_math, main, symbols_close, "\u27EF", "\\rgroup", true);
defineSymbol(symbols_math, main, symbols_open, "\u27EE", "\\lgroup", true); // Binary Operators

defineSymbol(symbols_math, main, bin, "\u2213", "\\mp", true);
defineSymbol(symbols_math, main, bin, "\u2296", "\\ominus", true);
defineSymbol(symbols_math, main, bin, "\u228E", "\\uplus", true);
defineSymbol(symbols_math, main, bin, "\u2293", "\\sqcap", true);
defineSymbol(symbols_math, main, bin, "\u2217", "\\ast");
defineSymbol(symbols_math, main, bin, "\u2294", "\\sqcup", true);
defineSymbol(symbols_math, main, bin, "\u25EF", "\\bigcirc");
defineSymbol(symbols_math, main, bin, "\u2219", "\\bullet");
defineSymbol(symbols_math, main, bin, "\u2021", "\\ddagger");
defineSymbol(symbols_math, main, bin, "\u2240", "\\wr", true);
defineSymbol(symbols_math, main, bin, "\u2A3F", "\\amalg");
defineSymbol(symbols_math, main, bin, "&", "\\And"); // from amsmath
// Arrow Symbols

defineSymbol(symbols_math, main, rel, "\u27F5", "\\longleftarrow", true);
defineSymbol(symbols_math, main, rel, "\u21D0", "\\Leftarrow", true);
defineSymbol(symbols_math, main, rel, "\u27F8", "\\Longleftarrow", true);
defineSymbol(symbols_math, main, rel, "\u27F6", "\\longrightarrow", true);
defineSymbol(symbols_math, main, rel, "\u21D2", "\\Rightarrow", true);
defineSymbol(symbols_math, main, rel, "\u27F9", "\\Longrightarrow", true);
defineSymbol(symbols_math, main, rel, "\u2194", "\\leftrightarrow", true);
defineSymbol(symbols_math, main, rel, "\u27F7", "\\longleftrightarrow", true);
defineSymbol(symbols_math, main, rel, "\u21D4", "\\Leftrightarrow", true);
defineSymbol(symbols_math, main, rel, "\u27FA", "\\Longleftrightarrow", true);
defineSymbol(symbols_math, main, rel, "\u21A6", "\\mapsto", true);
defineSymbol(symbols_math, main, rel, "\u27FC", "\\longmapsto", true);
defineSymbol(symbols_math, main, rel, "\u2197", "\\nearrow", true);
defineSymbol(symbols_math, main, rel, "\u21A9", "\\hookleftarrow", true);
defineSymbol(symbols_math, main, rel, "\u21AA", "\\hookrightarrow", true);
defineSymbol(symbols_math, main, rel, "\u2198", "\\searrow", true);
defineSymbol(symbols_math, main, rel, "\u21BC", "\\leftharpoonup", true);
defineSymbol(symbols_math, main, rel, "\u21C0", "\\rightharpoonup", true);
defineSymbol(symbols_math, main, rel, "\u2199", "\\swarrow", true);
defineSymbol(symbols_math, main, rel, "\u21BD", "\\leftharpoondown", true);
defineSymbol(symbols_math, main, rel, "\u21C1", "\\rightharpoondown", true);
defineSymbol(symbols_math, main, rel, "\u2196", "\\nwarrow", true);
defineSymbol(symbols_math, main, rel, "\u21CC", "\\rightleftharpoons", true); // AMS Negated Binary Relations

defineSymbol(symbols_math, ams, rel, "\u226E", "\\nless", true);
defineSymbol(symbols_math, ams, rel, "\uE010", "\\nleqslant");
defineSymbol(symbols_math, ams, rel, "\uE011", "\\nleqq");
defineSymbol(symbols_math, ams, rel, "\u2A87", "\\lneq", true);
defineSymbol(symbols_math, ams, rel, "\u2268", "\\lneqq", true);
defineSymbol(symbols_math, ams, rel, "\uE00C", "\\lvertneqq");
defineSymbol(symbols_math, ams, rel, "\u22E6", "\\lnsim", true);
defineSymbol(symbols_math, ams, rel, "\u2A89", "\\lnapprox", true);
defineSymbol(symbols_math, ams, rel, "\u2280", "\\nprec", true); // unicode-math maps \u22e0 to \npreccurlyeq. We'll use the AMS synonym.

defineSymbol(symbols_math, ams, rel, "\u22E0", "\\npreceq", true);
defineSymbol(symbols_math, ams, rel, "\u22E8", "\\precnsim", true);
defineSymbol(symbols_math, ams, rel, "\u2AB9", "\\precnapprox", true);
defineSymbol(symbols_math, ams, rel, "\u2241", "\\nsim", true);
defineSymbol(symbols_math, ams, rel, "\uE006", "\\nshortmid");
defineSymbol(symbols_math, ams, rel, "\u2224", "\\nmid", true);
defineSymbol(symbols_math, ams, rel, "\u22AC", "\\nvdash", true);
defineSymbol(symbols_math, ams, rel, "\u22AD", "\\nvDash", true);
defineSymbol(symbols_math, ams, rel, "\u22EA", "\\ntriangleleft");
defineSymbol(symbols_math, ams, rel, "\u22EC", "\\ntrianglelefteq", true);
defineSymbol(symbols_math, ams, rel, "\u228A", "\\subsetneq", true);
defineSymbol(symbols_math, ams, rel, "\uE01A", "\\varsubsetneq");
defineSymbol(symbols_math, ams, rel, "\u2ACB", "\\subsetneqq", true);
defineSymbol(symbols_math, ams, rel, "\uE017", "\\varsubsetneqq");
defineSymbol(symbols_math, ams, rel, "\u226F", "\\ngtr", true);
defineSymbol(symbols_math, ams, rel, "\uE00F", "\\ngeqslant");
defineSymbol(symbols_math, ams, rel, "\uE00E", "\\ngeqq");
defineSymbol(symbols_math, ams, rel, "\u2A88", "\\gneq", true);
defineSymbol(symbols_math, ams, rel, "\u2269", "\\gneqq", true);
defineSymbol(symbols_math, ams, rel, "\uE00D", "\\gvertneqq");
defineSymbol(symbols_math, ams, rel, "\u22E7", "\\gnsim", true);
defineSymbol(symbols_math, ams, rel, "\u2A8A", "\\gnapprox", true);
defineSymbol(symbols_math, ams, rel, "\u2281", "\\nsucc", true); // unicode-math maps \u22e1 to \nsucccurlyeq. We'll use the AMS synonym.

defineSymbol(symbols_math, ams, rel, "\u22E1", "\\nsucceq", true);
defineSymbol(symbols_math, ams, rel, "\u22E9", "\\succnsim", true);
defineSymbol(symbols_math, ams, rel, "\u2ABA", "\\succnapprox", true); // unicode-math maps \u2246 to \simneqq. We'll use the AMS synonym.

defineSymbol(symbols_math, ams, rel, "\u2246", "\\ncong", true);
defineSymbol(symbols_math, ams, rel, "\uE007", "\\nshortparallel");
defineSymbol(symbols_math, ams, rel, "\u2226", "\\nparallel", true);
defineSymbol(symbols_math, ams, rel, "\u22AF", "\\nVDash", true);
defineSymbol(symbols_math, ams, rel, "\u22EB", "\\ntriangleright");
defineSymbol(symbols_math, ams, rel, "\u22ED", "\\ntrianglerighteq", true);
defineSymbol(symbols_math, ams, rel, "\uE018", "\\nsupseteqq");
defineSymbol(symbols_math, ams, rel, "\u228B", "\\supsetneq", true);
defineSymbol(symbols_math, ams, rel, "\uE01B", "\\varsupsetneq");
defineSymbol(symbols_math, ams, rel, "\u2ACC", "\\supsetneqq", true);
defineSymbol(symbols_math, ams, rel, "\uE019", "\\varsupsetneqq");
defineSymbol(symbols_math, ams, rel, "\u22AE", "\\nVdash", true);
defineSymbol(symbols_math, ams, rel, "\u2AB5", "\\precneqq", true);
defineSymbol(symbols_math, ams, rel, "\u2AB6", "\\succneqq", true);
defineSymbol(symbols_math, ams, rel, "\uE016", "\\nsubseteqq");
defineSymbol(symbols_math, ams, bin, "\u22B4", "\\unlhd");
defineSymbol(symbols_math, ams, bin, "\u22B5", "\\unrhd"); // AMS Negated Arrows

defineSymbol(symbols_math, ams, rel, "\u219A", "\\nleftarrow", true);
defineSymbol(symbols_math, ams, rel, "\u219B", "\\nrightarrow", true);
defineSymbol(symbols_math, ams, rel, "\u21CD", "\\nLeftarrow", true);
defineSymbol(symbols_math, ams, rel, "\u21CF", "\\nRightarrow", true);
defineSymbol(symbols_math, ams, rel, "\u21AE", "\\nleftrightarrow", true);
defineSymbol(symbols_math, ams, rel, "\u21CE", "\\nLeftrightarrow", true); // AMS Misc

defineSymbol(symbols_math, ams, rel, "\u25B3", "\\vartriangle");
defineSymbol(symbols_math, ams, symbols_textord, "\u210F", "\\hslash");
defineSymbol(symbols_math, ams, symbols_textord, "\u25BD", "\\triangledown");
defineSymbol(symbols_math, ams, symbols_textord, "\u25CA", "\\lozenge");
defineSymbol(symbols_math, ams, symbols_textord, "\u24C8", "\\circledS");
defineSymbol(symbols_math, ams, symbols_textord, "\xAE", "\\circledR");
defineSymbol(symbols_text, ams, symbols_textord, "\xAE", "\\circledR");
defineSymbol(symbols_math, ams, symbols_textord, "\u2221", "\\measuredangle", true);
defineSymbol(symbols_math, ams, symbols_textord, "\u2204", "\\nexists");
defineSymbol(symbols_math, ams, symbols_textord, "\u2127", "\\mho");
defineSymbol(symbols_math, ams, symbols_textord, "\u2132", "\\Finv", true);
defineSymbol(symbols_math, ams, symbols_textord, "\u2141", "\\Game", true);
defineSymbol(symbols_math, ams, symbols_textord, "k", "\\Bbbk");
defineSymbol(symbols_math, ams, symbols_textord, "\u2035", "\\backprime");
defineSymbol(symbols_math, ams, symbols_textord, "\u25B2", "\\blacktriangle");
defineSymbol(symbols_math, ams, symbols_textord, "\u25BC", "\\blacktriangledown");
defineSymbol(symbols_math, ams, symbols_textord, "\u25A0", "\\blacksquare");
defineSymbol(symbols_math, ams, symbols_textord, "\u29EB", "\\blacklozenge");
defineSymbol(symbols_math, ams, symbols_textord, "\u2605", "\\bigstar");
defineSymbol(symbols_math, ams, symbols_textord, "\u2222", "\\sphericalangle", true);
defineSymbol(symbols_math, ams, symbols_textord, "\u2201", "\\complement", true); // unicode-math maps U+F0 (ð) to \matheth. We map to AMS function \eth

defineSymbol(symbols_math, ams, symbols_textord, "\xF0", "\\eth", true);
defineSymbol(symbols_math, ams, symbols_textord, "\u2571", "\\diagup");
defineSymbol(symbols_math, ams, symbols_textord, "\u2572", "\\diagdown");
defineSymbol(symbols_math, ams, symbols_textord, "\u25A1", "\\square");
defineSymbol(symbols_math, ams, symbols_textord, "\u25A1", "\\Box");
defineSymbol(symbols_math, ams, symbols_textord, "\u25CA", "\\Diamond"); // unicode-math maps U+A5 to \mathyen. We map to AMS function \yen

defineSymbol(symbols_math, ams, symbols_textord, "\xA5", "\\yen", true);
defineSymbol(symbols_text, ams, symbols_textord, "\xA5", "\\yen", true);
defineSymbol(symbols_math, ams, symbols_textord, "\u2713", "\\checkmark", true);
defineSymbol(symbols_text, ams, symbols_textord, "\u2713", "\\checkmark"); // AMS Hebrew

defineSymbol(symbols_math, ams, symbols_textord, "\u2136", "\\beth", true);
defineSymbol(symbols_math, ams, symbols_textord, "\u2138", "\\daleth", true);
defineSymbol(symbols_math, ams, symbols_textord, "\u2137", "\\gimel", true); // AMS Greek

defineSymbol(symbols_math, ams, symbols_textord, "\u03DD", "\\digamma");
defineSymbol(symbols_math, ams, symbols_textord, "\u03F0", "\\varkappa"); // AMS Delimiters

defineSymbol(symbols_math, ams, symbols_open, "\u250C", "\\ulcorner", true);
defineSymbol(symbols_math, ams, symbols_close, "\u2510", "\\urcorner", true);
defineSymbol(symbols_math, ams, symbols_open, "\u2514", "\\llcorner", true);
defineSymbol(symbols_math, ams, symbols_close, "\u2518", "\\lrcorner", true); // AMS Binary Relations

defineSymbol(symbols_math, ams, rel, "\u2266", "\\leqq", true);
defineSymbol(symbols_math, ams, rel, "\u2A7D", "\\leqslant", true);
defineSymbol(symbols_math, ams, rel, "\u2A95", "\\eqslantless", true);
defineSymbol(symbols_math, ams, rel, "\u2272", "\\lesssim", true);
defineSymbol(symbols_math, ams, rel, "\u2A85", "\\lessapprox", true);
defineSymbol(symbols_math, ams, rel, "\u224A", "\\approxeq", true);
defineSymbol(symbols_math, ams, bin, "\u22D6", "\\lessdot");
defineSymbol(symbols_math, ams, rel, "\u22D8", "\\lll", true);
defineSymbol(symbols_math, ams, rel, "\u2276", "\\lessgtr", true);
defineSymbol(symbols_math, ams, rel, "\u22DA", "\\lesseqgtr", true);
defineSymbol(symbols_math, ams, rel, "\u2A8B", "\\lesseqqgtr", true);
defineSymbol(symbols_math, ams, rel, "\u2251", "\\doteqdot");
defineSymbol(symbols_math, ams, rel, "\u2253", "\\risingdotseq", true);
defineSymbol(symbols_math, ams, rel, "\u2252", "\\fallingdotseq", true);
defineSymbol(symbols_math, ams, rel, "\u223D", "\\backsim", true);
defineSymbol(symbols_math, ams, rel, "\u22CD", "\\backsimeq", true);
defineSymbol(symbols_math, ams, rel, "\u2AC5", "\\subseteqq", true);
defineSymbol(symbols_math, ams, rel, "\u22D0", "\\Subset", true);
defineSymbol(symbols_math, ams, rel, "\u228F", "\\sqsubset", true);
defineSymbol(symbols_math, ams, rel, "\u227C", "\\preccurlyeq", true);
defineSymbol(symbols_math, ams, rel, "\u22DE", "\\curlyeqprec", true);
defineSymbol(symbols_math, ams, rel, "\u227E", "\\precsim", true);
defineSymbol(symbols_math, ams, rel, "\u2AB7", "\\precapprox", true);
defineSymbol(symbols_math, ams, rel, "\u22B2", "\\vartriangleleft");
defineSymbol(symbols_math, ams, rel, "\u22B4", "\\trianglelefteq");
defineSymbol(symbols_math, ams, rel, "\u22A8", "\\vDash", true);
defineSymbol(symbols_math, ams, rel, "\u22AA", "\\Vvdash", true);
defineSymbol(symbols_math, ams, rel, "\u2323", "\\smallsmile");
defineSymbol(symbols_math, ams, rel, "\u2322", "\\smallfrown");
defineSymbol(symbols_math, ams, rel, "\u224F", "\\bumpeq", true);
defineSymbol(symbols_math, ams, rel, "\u224E", "\\Bumpeq", true);
defineSymbol(symbols_math, ams, rel, "\u2267", "\\geqq", true);
defineSymbol(symbols_math, ams, rel, "\u2A7E", "\\geqslant", true);
defineSymbol(symbols_math, ams, rel, "\u2A96", "\\eqslantgtr", true);
defineSymbol(symbols_math, ams, rel, "\u2273", "\\gtrsim", true);
defineSymbol(symbols_math, ams, rel, "\u2A86", "\\gtrapprox", true);
defineSymbol(symbols_math, ams, bin, "\u22D7", "\\gtrdot");
defineSymbol(symbols_math, ams, rel, "\u22D9", "\\ggg", true);
defineSymbol(symbols_math, ams, rel, "\u2277", "\\gtrless", true);
defineSymbol(symbols_math, ams, rel, "\u22DB", "\\gtreqless", true);
defineSymbol(symbols_math, ams, rel, "\u2A8C", "\\gtreqqless", true);
defineSymbol(symbols_math, ams, rel, "\u2256", "\\eqcirc", true);
defineSymbol(symbols_math, ams, rel, "\u2257", "\\circeq", true);
defineSymbol(symbols_math, ams, rel, "\u225C", "\\triangleq", true);
defineSymbol(symbols_math, ams, rel, "\u223C", "\\thicksim");
defineSymbol(symbols_math, ams, rel, "\u2248", "\\thickapprox");
defineSymbol(symbols_math, ams, rel, "\u2AC6", "\\supseteqq", true);
defineSymbol(symbols_math, ams, rel, "\u22D1", "\\Supset", true);
defineSymbol(symbols_math, ams, rel, "\u2290", "\\sqsupset", true);
defineSymbol(symbols_math, ams, rel, "\u227D", "\\succcurlyeq", true);
defineSymbol(symbols_math, ams, rel, "\u22DF", "\\curlyeqsucc", true);
defineSymbol(symbols_math, ams, rel, "\u227F", "\\succsim", true);
defineSymbol(symbols_math, ams, rel, "\u2AB8", "\\succapprox", true);
defineSymbol(symbols_math, ams, rel, "\u22B3", "\\vartriangleright");
defineSymbol(symbols_math, ams, rel, "\u22B5", "\\trianglerighteq");
defineSymbol(symbols_math, ams, rel, "\u22A9", "\\Vdash", true);
defineSymbol(symbols_math, ams, rel, "\u2223", "\\shortmid");
defineSymbol(symbols_math, ams, rel, "\u2225", "\\shortparallel");
defineSymbol(symbols_math, ams, rel, "\u226C", "\\between", true);
defineSymbol(symbols_math, ams, rel, "\u22D4", "\\pitchfork", true);
defineSymbol(symbols_math, ams, rel, "\u221D", "\\varpropto");
defineSymbol(symbols_math, ams, rel, "\u25C0", "\\blacktriangleleft"); // unicode-math says that \therefore is a mathord atom.
// We kept the amssymb atom type, which is rel.

defineSymbol(symbols_math, ams, rel, "\u2234", "\\therefore", true);
defineSymbol(symbols_math, ams, rel, "\u220D", "\\backepsilon");
defineSymbol(symbols_math, ams, rel, "\u25B6", "\\blacktriangleright"); // unicode-math says that \because is a mathord atom.
// We kept the amssymb atom type, which is rel.

defineSymbol(symbols_math, ams, rel, "\u2235", "\\because", true);
defineSymbol(symbols_math, ams, rel, "\u22D8", "\\llless");
defineSymbol(symbols_math, ams, rel, "\u22D9", "\\gggtr");
defineSymbol(symbols_math, ams, bin, "\u22B2", "\\lhd");
defineSymbol(symbols_math, ams, bin, "\u22B3", "\\rhd");
defineSymbol(symbols_math, ams, rel, "\u2242", "\\eqsim", true);
defineSymbol(symbols_math, main, rel, "\u22C8", "\\Join");
defineSymbol(symbols_math, ams, rel, "\u2251", "\\Doteq", true); // AMS Binary Operators

defineSymbol(symbols_math, ams, bin, "\u2214", "\\dotplus", true);
defineSymbol(symbols_math, ams, bin, "\u2216", "\\smallsetminus");
defineSymbol(symbols_math, ams, bin, "\u22D2", "\\Cap", true);
defineSymbol(symbols_math, ams, bin, "\u22D3", "\\Cup", true);
defineSymbol(symbols_math, ams, bin, "\u2A5E", "\\doublebarwedge", true);
defineSymbol(symbols_math, ams, bin, "\u229F", "\\boxminus", true);
defineSymbol(symbols_math, ams, bin, "\u229E", "\\boxplus", true);
defineSymbol(symbols_math, ams, bin, "\u22C7", "\\divideontimes", true);
defineSymbol(symbols_math, ams, bin, "\u22C9", "\\ltimes", true);
defineSymbol(symbols_math, ams, bin, "\u22CA", "\\rtimes", true);
defineSymbol(symbols_math, ams, bin, "\u22CB", "\\leftthreetimes", true);
defineSymbol(symbols_math, ams, bin, "\u22CC", "\\rightthreetimes", true);
defineSymbol(symbols_math, ams, bin, "\u22CF", "\\curlywedge", true);
defineSymbol(symbols_math, ams, bin, "\u22CE", "\\curlyvee", true);
defineSymbol(symbols_math, ams, bin, "\u229D", "\\circleddash", true);
defineSymbol(symbols_math, ams, bin, "\u229B", "\\circledast", true);
defineSymbol(symbols_math, ams, bin, "\u22C5", "\\centerdot");
defineSymbol(symbols_math, ams, bin, "\u22BA", "\\intercal", true);
defineSymbol(symbols_math, ams, bin, "\u22D2", "\\doublecap");
defineSymbol(symbols_math, ams, bin, "\u22D3", "\\doublecup");
defineSymbol(symbols_math, ams, bin, "\u22A0", "\\boxtimes", true); // AMS Arrows
// Note: unicode-math maps \u21e2 to their own function \rightdasharrow.
// We'll map it to AMS function \dashrightarrow. It produces the same atom.

defineSymbol(symbols_math, ams, rel, "\u21E2", "\\dashrightarrow", true); // unicode-math maps \u21e0 to \leftdasharrow. We'll use the AMS synonym.

defineSymbol(symbols_math, ams, rel, "\u21E0", "\\dashleftarrow", true);
defineSymbol(symbols_math, ams, rel, "\u21C7", "\\leftleftarrows", true);
defineSymbol(symbols_math, ams, rel, "\u21C6", "\\leftrightarrows", true);
defineSymbol(symbols_math, ams, rel, "\u21DA", "\\Lleftarrow", true);
defineSymbol(symbols_math, ams, rel, "\u219E", "\\twoheadleftarrow", true);
defineSymbol(symbols_math, ams, rel, "\u21A2", "\\leftarrowtail", true);
defineSymbol(symbols_math, ams, rel, "\u21AB", "\\looparrowleft", true);
defineSymbol(symbols_math, ams, rel, "\u21CB", "\\leftrightharpoons", true);
defineSymbol(symbols_math, ams, rel, "\u21B6", "\\curvearrowleft", true); // unicode-math maps \u21ba to \acwopencirclearrow. We'll use the AMS synonym.

defineSymbol(symbols_math, ams, rel, "\u21BA", "\\circlearrowleft", true);
defineSymbol(symbols_math, ams, rel, "\u21B0", "\\Lsh", true);
defineSymbol(symbols_math, ams, rel, "\u21C8", "\\upuparrows", true);
defineSymbol(symbols_math, ams, rel, "\u21BF", "\\upharpoonleft", true);
defineSymbol(symbols_math, ams, rel, "\u21C3", "\\downharpoonleft", true);
defineSymbol(symbols_math, ams, rel, "\u22B8", "\\multimap", true);
defineSymbol(symbols_math, ams, rel, "\u21AD", "\\leftrightsquigarrow", true);
defineSymbol(symbols_math, ams, rel, "\u21C9", "\\rightrightarrows", true);
defineSymbol(symbols_math, ams, rel, "\u21C4", "\\rightleftarrows", true);
defineSymbol(symbols_math, ams, rel, "\u21A0", "\\twoheadrightarrow", true);
defineSymbol(symbols_math, ams, rel, "\u21A3", "\\rightarrowtail", true);
defineSymbol(symbols_math, ams, rel, "\u21AC", "\\looparrowright", true);
defineSymbol(symbols_math, ams, rel, "\u21B7", "\\curvearrowright", true); // unicode-math maps \u21bb to \cwopencirclearrow. We'll use the AMS synonym.

defineSymbol(symbols_math, ams, rel, "\u21BB", "\\circlearrowright", true);
defineSymbol(symbols_math, ams, rel, "\u21B1", "\\Rsh", true);
defineSymbol(symbols_math, ams, rel, "\u21CA", "\\downdownarrows", true);
defineSymbol(symbols_math, ams, rel, "\u21BE", "\\upharpoonright", true);
defineSymbol(symbols_math, ams, rel, "\u21C2", "\\downharpoonright", true);
defineSymbol(symbols_math, ams, rel, "\u21DD", "\\rightsquigarrow", true);
defineSymbol(symbols_math, ams, rel, "\u21DD", "\\leadsto");
defineSymbol(symbols_math, ams, rel, "\u21DB", "\\Rrightarrow", true);
defineSymbol(symbols_math, ams, rel, "\u21BE", "\\restriction");
defineSymbol(symbols_math, main, symbols_textord, "\u2018", "`");
defineSymbol(symbols_math, main, symbols_textord, "$", "\\$");
defineSymbol(symbols_text, main, symbols_textord, "$", "\\$");
defineSymbol(symbols_text, main, symbols_textord, "$", "\\textdollar");
defineSymbol(symbols_math, main, symbols_textord, "%", "\\%");
defineSymbol(symbols_text, main, symbols_textord, "%", "\\%");
defineSymbol(symbols_math, main, symbols_textord, "_", "\\_");
defineSymbol(symbols_text, main, symbols_textord, "_", "\\_");
defineSymbol(symbols_text, main, symbols_textord, "_", "\\textunderscore");
defineSymbol(symbols_math, main, symbols_textord, "\u2220", "\\angle", true);
defineSymbol(symbols_math, main, symbols_textord, "\u221E", "\\infty", true);
defineSymbol(symbols_math, main, symbols_textord, "\u2032", "\\prime");
defineSymbol(symbols_math, main, symbols_textord, "\u25B3", "\\triangle");
defineSymbol(symbols_math, main, symbols_textord, "\u0393", "\\Gamma", true);
defineSymbol(symbols_math, main, symbols_textord, "\u0394", "\\Delta", true);
defineSymbol(symbols_math, main, symbols_textord, "\u0398", "\\Theta", true);
defineSymbol(symbols_math, main, symbols_textord, "\u039B", "\\Lambda", true);
defineSymbol(symbols_math, main, symbols_textord, "\u039E", "\\Xi", true);
defineSymbol(symbols_math, main, symbols_textord, "\u03A0", "\\Pi", true);
defineSymbol(symbols_math, main, symbols_textord, "\u03A3", "\\Sigma", true);
defineSymbol(symbols_math, main, symbols_textord, "\u03A5", "\\Upsilon", true);
defineSymbol(symbols_math, main, symbols_textord, "\u03A6", "\\Phi", true);
defineSymbol(symbols_math, main, symbols_textord, "\u03A8", "\\Psi", true);
defineSymbol(symbols_math, main, symbols_textord, "\u03A9", "\\Omega", true);
defineSymbol(symbols_math, main, symbols_textord, "A", "\u0391");
defineSymbol(symbols_math, main, symbols_textord, "B", "\u0392");
defineSymbol(symbols_math, main, symbols_textord, "E", "\u0395");
defineSymbol(symbols_math, main, symbols_textord, "Z", "\u0396");
defineSymbol(symbols_math, main, symbols_textord, "H", "\u0397");
defineSymbol(symbols_math, main, symbols_textord, "I", "\u0399");
defineSymbol(symbols_math, main, symbols_textord, "K", "\u039A");
defineSymbol(symbols_math, main, symbols_textord, "M", "\u039C");
defineSymbol(symbols_math, main, symbols_textord, "N", "\u039D");
defineSymbol(symbols_math, main, symbols_textord, "O", "\u039F");
defineSymbol(symbols_math, main, symbols_textord, "P", "\u03A1");
defineSymbol(symbols_math, main, symbols_textord, "T", "\u03A4");
defineSymbol(symbols_math, main, symbols_textord, "X", "\u03A7");
defineSymbol(symbols_math, main, symbols_textord, "\xAC", "\\neg", true);
defineSymbol(symbols_math, main, symbols_textord, "\xAC", "\\lnot");
defineSymbol(symbols_math, main, symbols_textord, "\u22A4", "\\top");
defineSymbol(symbols_math, main, symbols_textord, "\u22A5", "\\bot");
defineSymbol(symbols_math, main, symbols_textord, "\u2205", "\\emptyset");
defineSymbol(symbols_math, ams, symbols_textord, "\u2205", "\\varnothing");
defineSymbol(symbols_math, main, mathord, "\u03B1", "\\alpha", true);
defineSymbol(symbols_math, main, mathord, "\u03B2", "\\beta", true);
defineSymbol(symbols_math, main, mathord, "\u03B3", "\\gamma", true);
defineSymbol(symbols_math, main, mathord, "\u03B4", "\\delta", true);
defineSymbol(symbols_math, main, mathord, "\u03F5", "\\epsilon", true);
defineSymbol(symbols_math, main, mathord, "\u03B6", "\\zeta", true);
defineSymbol(symbols_math, main, mathord, "\u03B7", "\\eta", true);
defineSymbol(symbols_math, main, mathord, "\u03B8", "\\theta", true);
defineSymbol(symbols_math, main, mathord, "\u03B9", "\\iota", true);
defineSymbol(symbols_math, main, mathord, "\u03BA", "\\kappa", true);
defineSymbol(symbols_math, main, mathord, "\u03BB", "\\lambda", true);
defineSymbol(symbols_math, main, mathord, "\u03BC", "\\mu", true);
defineSymbol(symbols_math, main, mathord, "\u03BD", "\\nu", true);
defineSymbol(symbols_math, main, mathord, "\u03BE", "\\xi", true);
defineSymbol(symbols_math, main, mathord, "\u03BF", "\\omicron", true);
defineSymbol(symbols_math, main, mathord, "\u03C0", "\\pi", true);
defineSymbol(symbols_math, main, mathord, "\u03C1", "\\rho", true);
defineSymbol(symbols_math, main, mathord, "\u03C3", "\\sigma", true);
defineSymbol(symbols_math, main, mathord, "\u03C4", "\\tau", true);
defineSymbol(symbols_math, main, mathord, "\u03C5", "\\upsilon", true);
defineSymbol(symbols_math, main, mathord, "\u03D5", "\\phi", true);
defineSymbol(symbols_math, main, mathord, "\u03C7", "\\chi", true);
defineSymbol(symbols_math, main, mathord, "\u03C8", "\\psi", true);
defineSymbol(symbols_math, main, mathord, "\u03C9", "\\omega", true);
defineSymbol(symbols_math, main, mathord, "\u03B5", "\\varepsilon", true);
defineSymbol(symbols_math, main, mathord, "\u03D1", "\\vartheta", true);
defineSymbol(symbols_math, main, mathord, "\u03D6", "\\varpi", true);
defineSymbol(symbols_math, main, mathord, "\u03F1", "\\varrho", true);
defineSymbol(symbols_math, main, mathord, "\u03C2", "\\varsigma", true);
defineSymbol(symbols_math, main, mathord, "\u03C6", "\\varphi", true);
defineSymbol(symbols_math, main, bin, "\u2217", "*");
defineSymbol(symbols_math, main, bin, "+", "+");
defineSymbol(symbols_math, main, bin, "\u2212", "-");
defineSymbol(symbols_math, main, bin, "\u22C5", "\\cdot", true);
defineSymbol(symbols_math, main, bin, "\u2218", "\\circ");
defineSymbol(symbols_math, main, bin, "\xF7", "\\div", true);
defineSymbol(symbols_math, main, bin, "\xB1", "\\pm", true);
defineSymbol(symbols_math, main, bin, "\xD7", "\\times", true);
defineSymbol(symbols_math, main, bin, "\u2229", "\\cap", true);
defineSymbol(symbols_math, main, bin, "\u222A", "\\cup", true);
defineSymbol(symbols_math, main, bin, "\u2216", "\\setminus");
defineSymbol(symbols_math, main, bin, "\u2227", "\\land");
defineSymbol(symbols_math, main, bin, "\u2228", "\\lor");
defineSymbol(symbols_math, main, bin, "\u2227", "\\wedge", true);
defineSymbol(symbols_math, main, bin, "\u2228", "\\vee", true);
defineSymbol(symbols_math, main, symbols_textord, "\u221A", "\\surd");
defineSymbol(symbols_math, main, symbols_open, "(", "(");
defineSymbol(symbols_math, main, symbols_open, "[", "[");
defineSymbol(symbols_math, main, symbols_open, "\u27E8", "\\langle", true);
defineSymbol(symbols_math, main, symbols_open, "\u2223", "\\lvert");
defineSymbol(symbols_math, main, symbols_open, "\u2225", "\\lVert");
defineSymbol(symbols_math, main, symbols_close, ")", ")");
defineSymbol(symbols_math, main, symbols_close, "]", "]");
defineSymbol(symbols_math, main, symbols_close, "?", "?");
defineSymbol(symbols_math, main, symbols_close, "!", "!");
defineSymbol(symbols_math, main, symbols_close, "\u27E9", "\\rangle", true);
defineSymbol(symbols_math, main, symbols_close, "\u2223", "\\rvert");
defineSymbol(symbols_math, main, symbols_close, "\u2225", "\\rVert");
defineSymbol(symbols_math, main, rel, "=", "=");
defineSymbol(symbols_math, main, rel, "<", "<");
defineSymbol(symbols_math, main, rel, ">", ">");
defineSymbol(symbols_math, main, rel, ":", ":");
defineSymbol(symbols_math, main, rel, "\u2248", "\\approx", true);
defineSymbol(symbols_math, main, rel, "\u2245", "\\cong", true);
defineSymbol(symbols_math, main, rel, "\u2265", "\\ge");
defineSymbol(symbols_math, main, rel, "\u2265", "\\geq", true);
defineSymbol(symbols_math, main, rel, "\u2190", "\\gets");
defineSymbol(symbols_math, main, rel, ">", "\\gt");
defineSymbol(symbols_math, main, rel, "\u2208", "\\in", true);
defineSymbol(symbols_math, main, rel, "\u0338", "\\@not");
defineSymbol(symbols_math, main, rel, "\u2282", "\\subset", true);
defineSymbol(symbols_math, main, rel, "\u2283", "\\supset", true);
defineSymbol(symbols_math, main, rel, "\u2286", "\\subseteq", true);
defineSymbol(symbols_math, main, rel, "\u2287", "\\supseteq", true);
defineSymbol(symbols_math, ams, rel, "\u2288", "\\nsubseteq", true);
defineSymbol(symbols_math, ams, rel, "\u2289", "\\nsupseteq", true);
defineSymbol(symbols_math, main, rel, "\u22A8", "\\models");
defineSymbol(symbols_math, main, rel, "\u2190", "\\leftarrow", true);
defineSymbol(symbols_math, main, rel, "\u2264", "\\le");
defineSymbol(symbols_math, main, rel, "\u2264", "\\leq", true);
defineSymbol(symbols_math, main, rel, "<", "\\lt");
defineSymbol(symbols_math, main, rel, "\u2192", "\\rightarrow", true);
defineSymbol(symbols_math, main, rel, "\u2192", "\\to");
defineSymbol(symbols_math, ams, rel, "\u2271", "\\ngeq", true);
defineSymbol(symbols_math, ams, rel, "\u2270", "\\nleq", true);
defineSymbol(symbols_math, main, spacing, "\xA0", "\\ ");
defineSymbol(symbols_math, main, spacing, "\xA0", "~");
defineSymbol(symbols_math, main, spacing, "\xA0", "\\space"); // Ref: LaTeX Source 2e: \DeclareRobustCommand{\nobreakspace}{%

defineSymbol(symbols_math, main, spacing, "\xA0", "\\nobreakspace");
defineSymbol(symbols_text, main, spacing, "\xA0", "\\ ");
defineSymbol(symbols_text, main, spacing, "\xA0", "~");
defineSymbol(symbols_text, main, spacing, "\xA0", "\\space");
defineSymbol(symbols_text, main, spacing, "\xA0", "\\nobreakspace");
defineSymbol(symbols_math, main, spacing, null, "\\nobreak");
defineSymbol(symbols_math, main, spacing, null, "\\allowbreak");
defineSymbol(symbols_math, main, punct, ",", ",");
defineSymbol(symbols_math, main, punct, ";", ";");
defineSymbol(symbols_math, ams, bin, "\u22BC", "\\barwedge", true);
defineSymbol(symbols_math, ams, bin, "\u22BB", "\\veebar", true);
defineSymbol(symbols_math, main, bin, "\u2299", "\\odot", true);
defineSymbol(symbols_math, main, bin, "\u2295", "\\oplus", true);
defineSymbol(symbols_math, main, bin, "\u2297", "\\otimes", true);
defineSymbol(symbols_math, main, symbols_textord, "\u2202", "\\partial", true);
defineSymbol(symbols_math, main, bin, "\u2298", "\\oslash", true);
defineSymbol(symbols_math, ams, bin, "\u229A", "\\circledcirc", true);
defineSymbol(symbols_math, ams, bin, "\u22A1", "\\boxdot", true);
defineSymbol(symbols_math, main, bin, "\u25B3", "\\bigtriangleup");
defineSymbol(symbols_math, main, bin, "\u25BD", "\\bigtriangledown");
defineSymbol(symbols_math, main, bin, "\u2020", "\\dagger");
defineSymbol(symbols_math, main, bin, "\u22C4", "\\diamond");
defineSymbol(symbols_math, main, bin, "\u22C6", "\\star");
defineSymbol(symbols_math, main, bin, "\u25C3", "\\triangleleft");
defineSymbol(symbols_math, main, bin, "\u25B9", "\\triangleright");
defineSymbol(symbols_math, main, symbols_open, "{", "\\{");
defineSymbol(symbols_text, main, symbols_textord, "{", "\\{");
defineSymbol(symbols_text, main, symbols_textord, "{", "\\textbraceleft");
defineSymbol(symbols_math, main, symbols_close, "}", "\\}");
defineSymbol(symbols_text, main, symbols_textord, "}", "\\}");
defineSymbol(symbols_text, main, symbols_textord, "}", "\\textbraceright");
defineSymbol(symbols_math, main, symbols_open, "{", "\\lbrace");
defineSymbol(symbols_math, main, symbols_close, "}", "\\rbrace");
defineSymbol(symbols_math, main, symbols_open, "[", "\\lbrack");
defineSymbol(symbols_text, main, symbols_textord, "[", "\\lbrack");
defineSymbol(symbols_math, main, symbols_close, "]", "\\rbrack");
defineSymbol(symbols_text, main, symbols_textord, "]", "\\rbrack");
defineSymbol(symbols_math, main, symbols_open, "(", "\\lparen");
defineSymbol(symbols_math, main, symbols_close, ")", "\\rparen");
defineSymbol(symbols_text, main, symbols_textord, "<", "\\textless"); // in T1 fontenc

defineSymbol(symbols_text, main, symbols_textord, ">", "\\textgreater"); // in T1 fontenc

defineSymbol(symbols_math, main, symbols_open, "\u230A", "\\lfloor", true);
defineSymbol(symbols_math, main, symbols_close, "\u230B", "\\rfloor", true);
defineSymbol(symbols_math, main, symbols_open, "\u2308", "\\lceil", true);
defineSymbol(symbols_math, main, symbols_close, "\u2309", "\\rceil", true);
defineSymbol(symbols_math, main, symbols_textord, "\\", "\\backslash");
defineSymbol(symbols_math, main, symbols_textord, "\u2223", "|");
defineSymbol(symbols_math, main, symbols_textord, "\u2223", "\\vert");
defineSymbol(symbols_text, main, symbols_textord, "|", "\\textbar"); // in T1 fontenc

defineSymbol(symbols_math, main, symbols_textord, "\u2225", "\\|");
defineSymbol(symbols_math, main, symbols_textord, "\u2225", "\\Vert");
defineSymbol(symbols_text, main, symbols_textord, "\u2225", "\\textbardbl");
defineSymbol(symbols_text, main, symbols_textord, "~", "\\textasciitilde");
defineSymbol(symbols_math, main, rel, "\u2191", "\\uparrow", true);
defineSymbol(symbols_math, main, rel, "\u21D1", "\\Uparrow", true);
defineSymbol(symbols_math, main, rel, "\u2193", "\\downarrow", true);
defineSymbol(symbols_math, main, rel, "\u21D3", "\\Downarrow", true);
defineSymbol(symbols_math, main, rel, "\u2195", "\\updownarrow", true);
defineSymbol(symbols_math, main, rel, "\u21D5", "\\Updownarrow", true);
defineSymbol(symbols_math, main, op, "\u2210", "\\coprod");
defineSymbol(symbols_math, main, op, "\u22C1", "\\bigvee");
defineSymbol(symbols_math, main, op, "\u22C0", "\\bigwedge");
defineSymbol(symbols_math, main, op, "\u2A04", "\\biguplus");
defineSymbol(symbols_math, main, op, "\u22C2", "\\bigcap");
defineSymbol(symbols_math, main, op, "\u22C3", "\\bigcup");
defineSymbol(symbols_math, main, op, "\u222B", "\\int");
defineSymbol(symbols_math, main, op, "\u222B", "\\intop");
defineSymbol(symbols_math, main, op, "\u222C", "\\iint");
defineSymbol(symbols_math, main, op, "\u222D", "\\iiint");
defineSymbol(symbols_math, main, op, "\u220F", "\\prod");
defineSymbol(symbols_math, main, op, "\u2211", "\\sum");
defineSymbol(symbols_math, main, op, "\u2A02", "\\bigotimes");
defineSymbol(symbols_math, main, op, "\u2A01", "\\bigoplus");
defineSymbol(symbols_math, main, op, "\u2A00", "\\bigodot");
defineSymbol(symbols_math, main, op, "\u222E", "\\oint");
defineSymbol(symbols_math, main, op, "\u222F", "\\oiint");
defineSymbol(symbols_math, main, op, "\u2230", "\\oiiint");
defineSymbol(symbols_math, main, op, "\u2A06", "\\bigsqcup");
defineSymbol(symbols_math, main, op, "\u222B", "\\smallint");
defineSymbol(symbols_text, main, symbols_inner, "\u2026", "\\textellipsis");
defineSymbol(symbols_math, main, symbols_inner, "\u2026", "\\mathellipsis");
defineSymbol(symbols_text, main, symbols_inner, "\u2026", "\\ldots", true);
defineSymbol(symbols_math, main, symbols_inner, "\u2026", "\\ldots", true);
defineSymbol(symbols_math, main, symbols_inner, "\u22EF", "\\@cdots", true);
defineSymbol(symbols_math, main, symbols_inner, "\u22F1", "\\ddots", true);
defineSymbol(symbols_math, main, symbols_textord, "\u22EE", "\\varvdots"); // \vdots is a macro

defineSymbol(symbols_math, main, symbols_accent, "\u02CA", "\\acute");
defineSymbol(symbols_math, main, symbols_accent, "\u02CB", "\\grave");
defineSymbol(symbols_math, main, symbols_accent, "\xA8", "\\ddot");
defineSymbol(symbols_math, main, symbols_accent, "~", "\\tilde");
defineSymbol(symbols_math, main, symbols_accent, "\u02C9", "\\bar");
defineSymbol(symbols_math, main, symbols_accent, "\u02D8", "\\breve");
defineSymbol(symbols_math, main, symbols_accent, "\u02C7", "\\check");
defineSymbol(symbols_math, main, symbols_accent, "^", "\\hat");
defineSymbol(symbols_math, main, symbols_accent, "\u20D7", "\\vec");
defineSymbol(symbols_math, main, symbols_accent, "\u02D9", "\\dot");
defineSymbol(symbols_math, main, symbols_accent, "\u02DA", "\\mathring");
defineSymbol(symbols_math, main, mathord, "\u0131", "\\imath", true);
defineSymbol(symbols_math, main, mathord, "\u0237", "\\jmath", true);
defineSymbol(symbols_text, main, symbols_textord, "\u0131", "\\i", true);
defineSymbol(symbols_text, main, symbols_textord, "\u0237", "\\j", true);
defineSymbol(symbols_text, main, symbols_textord, "\xDF", "\\ss", true);
defineSymbol(symbols_text, main, symbols_textord, "\xE6", "\\ae", true);
defineSymbol(symbols_text, main, symbols_textord, "\xE6", "\\ae", true);
defineSymbol(symbols_text, main, symbols_textord, "\u0153", "\\oe", true);
defineSymbol(symbols_text, main, symbols_textord, "\xF8", "\\o", true);
defineSymbol(symbols_text, main, symbols_textord, "\xC6", "\\AE", true);
defineSymbol(symbols_text, main, symbols_textord, "\u0152", "\\OE", true);
defineSymbol(symbols_text, main, symbols_textord, "\xD8", "\\O", true);
defineSymbol(symbols_text, main, symbols_accent, "\u02CA", "\\'"); // acute

defineSymbol(symbols_text, main, symbols_accent, "\u02CB", "\\`"); // grave

defineSymbol(symbols_text, main, symbols_accent, "\u02C6", "\\^"); // circumflex

defineSymbol(symbols_text, main, symbols_accent, "\u02DC", "\\~"); // tilde

defineSymbol(symbols_text, main, symbols_accent, "\u02C9", "\\="); // macron

defineSymbol(symbols_text, main, symbols_accent, "\u02D8", "\\u"); // breve

defineSymbol(symbols_text, main, symbols_accent, "\u02D9", "\\."); // dot above

defineSymbol(symbols_text, main, symbols_accent, "\u02DA", "\\r"); // ring above

defineSymbol(symbols_text, main, symbols_accent, "\u02C7", "\\v"); // caron

defineSymbol(symbols_text, main, symbols_accent, "\xA8", '\\"'); // diaresis

defineSymbol(symbols_text, main, symbols_accent, "\u02DD", "\\H"); // double acute

defineSymbol(symbols_text, main, symbols_accent, "\u25EF", "\\textcircled"); // \bigcirc glyph
// These ligatures are detected and created in Parser.js's `formLigatures`.

var ligatures = {
  "--": true,
  "---": true,
  "``": true,
  "''": true
};
defineSymbol(symbols_text, main, symbols_textord, "\u2013", "--");
defineSymbol(symbols_text, main, symbols_textord, "\u2013", "\\textendash");
defineSymbol(symbols_text, main, symbols_textord, "\u2014", "---");
defineSymbol(symbols_text, main, symbols_textord, "\u2014", "\\textemdash");
defineSymbol(symbols_text, main, symbols_textord, "\u2018", "`");
defineSymbol(symbols_text, main, symbols_textord, "\u2018", "\\textquoteleft");
defineSymbol(symbols_text, main, symbols_textord, "\u2019", "'");
defineSymbol(symbols_text, main, symbols_textord, "\u2019", "\\textquoteright");
defineSymbol(symbols_text, main, symbols_textord, "\u201C", "``");
defineSymbol(symbols_text, main, symbols_textord, "\u201C", "\\textquotedblleft");
defineSymbol(symbols_text, main, symbols_textord, "\u201D", "''");
defineSymbol(symbols_text, main, symbols_textord, "\u201D", "\\textquotedblright"); //  \degree from gensymb package

defineSymbol(symbols_math, main, symbols_textord, "\xB0", "\\degree", true);
defineSymbol(symbols_text, main, symbols_textord, "\xB0", "\\degree"); // \textdegree from inputenc package

defineSymbol(symbols_text, main, symbols_textord, "\xB0", "\\textdegree", true); // TODO: In LaTeX, \pounds can generate a different character in text and math
// mode, but among our fonts, only Main-Italic defines this character "163".

defineSymbol(symbols_math, main, mathord, "\xA3", "\\pounds");
defineSymbol(symbols_math, main, mathord, "\xA3", "\\mathsterling", true);
defineSymbol(symbols_text, main, mathord, "\xA3", "\\pounds");
defineSymbol(symbols_text, main, mathord, "\xA3", "\\textsterling", true);
defineSymbol(symbols_math, ams, symbols_textord, "\u2720", "\\maltese");
defineSymbol(symbols_text, ams, symbols_textord, "\u2720", "\\maltese");
defineSymbol(symbols_text, main, spacing, "\xA0", "\\ ");
defineSymbol(symbols_text, main, spacing, "\xA0", " ");
defineSymbol(symbols_text, main, spacing, "\xA0", "~"); // There are lots of symbols which are the same, so we add them in afterwards.
// All of these are textords in math mode

var mathTextSymbols = "0123456789/@.\"";

for (var symbols_i = 0; symbols_i < mathTextSymbols.length; symbols_i++) {
  var symbols_ch = mathTextSymbols.charAt(symbols_i);
  defineSymbol(symbols_math, main, symbols_textord, symbols_ch, symbols_ch);
} // All of these are textords in text mode


var textSymbols = "0123456789!@*()-=+[]<>|\";:?/.,";

for (var src_symbols_i = 0; src_symbols_i < textSymbols.length; src_symbols_i++) {
  var _ch = textSymbols.charAt(src_symbols_i);

  defineSymbol(symbols_text, main, symbols_textord, _ch, _ch);
} // All of these are textords in text mode, and mathords in math mode


var letters = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";

for (var symbols_i2 = 0; symbols_i2 < letters.length; symbols_i2++) {
  var _ch2 = letters.charAt(symbols_i2);

  defineSymbol(symbols_math, main, mathord, _ch2, _ch2);
  defineSymbol(symbols_text, main, symbols_textord, _ch2, _ch2);
} // The next loop loads wide (surrogate pair) characters.
// We support some letters in the Unicode range U+1D400 to U+1D7FF,
// Mathematical Alphanumeric Symbols.
// Some editors do not deal well with wide characters. So don't write the
// string into this file. Instead, create the string from the surrogate pair.


var symbols_wideChar = "";

for (var _i3 = 0; _i3 < letters.length; _i3++) {
  var _ch3 = letters.charAt(_i3); // The hex numbers in the next line are a surrogate pair.
  // 0xD835 is the high surrogate for all letters in the range we support.
  // 0xDC00 is the low surrogate for bold A.


  symbols_wideChar = String.fromCharCode(0xD835, 0xDC00 + _i3); // A-Z a-z bold

  defineSymbol(symbols_math, main, mathord, _ch3, symbols_wideChar);
  defineSymbol(symbols_text, main, symbols_textord, _ch3, symbols_wideChar);
  symbols_wideChar = String.fromCharCode(0xD835, 0xDC34 + _i3); // A-Z a-z italic

  defineSymbol(symbols_math, main, mathord, _ch3, symbols_wideChar);
  defineSymbol(symbols_text, main, symbols_textord, _ch3, symbols_wideChar);
  symbols_wideChar = String.fromCharCode(0xD835, 0xDC68 + _i3); // A-Z a-z bold italic

  defineSymbol(symbols_math, main, mathord, _ch3, symbols_wideChar);
  defineSymbol(symbols_text, main, symbols_textord, _ch3, symbols_wideChar);
  symbols_wideChar = String.fromCharCode(0xD835, 0xDD04 + _i3); // A-Z a-z Fractur

  defineSymbol(symbols_math, main, mathord, _ch3, symbols_wideChar);
  defineSymbol(symbols_text, main, symbols_textord, _ch3, symbols_wideChar);
  symbols_wideChar = String.fromCharCode(0xD835, 0xDDA0 + _i3); // A-Z a-z sans-serif

  defineSymbol(symbols_math, main, mathord, _ch3, symbols_wideChar);
  defineSymbol(symbols_text, main, symbols_textord, _ch3, symbols_wideChar);
  symbols_wideChar = String.fromCharCode(0xD835, 0xDDD4 + _i3); // A-Z a-z sans bold

  defineSymbol(symbols_math, main, mathord, _ch3, symbols_wideChar);
  defineSymbol(symbols_text, main, symbols_textord, _ch3, symbols_wideChar);
  symbols_wideChar = String.fromCharCode(0xD835, 0xDE08 + _i3); // A-Z a-z sans italic

  defineSymbol(symbols_math, main, mathord, _ch3, symbols_wideChar);
  defineSymbol(symbols_text, main, symbols_textord, _ch3, symbols_wideChar);
  symbols_wideChar = String.fromCharCode(0xD835, 0xDE70 + _i3); // A-Z a-z monospace

  defineSymbol(symbols_math, main, mathord, _ch3, symbols_wideChar);
  defineSymbol(symbols_text, main, symbols_textord, _ch3, symbols_wideChar);

  if (_i3 < 26) {
    // KaTeX fonts have only capital letters for blackboard bold and script.
    // See exception for k below.
    symbols_wideChar = String.fromCharCode(0xD835, 0xDD38 + _i3); // A-Z double struck

    defineSymbol(symbols_math, main, mathord, _ch3, symbols_wideChar);
    defineSymbol(symbols_text, main, symbols_textord, _ch3, symbols_wideChar);
    symbols_wideChar = String.fromCharCode(0xD835, 0xDC9C + _i3); // A-Z script

    defineSymbol(symbols_math, main, mathord, _ch3, symbols_wideChar);
    defineSymbol(symbols_text, main, symbols_textord, _ch3, symbols_wideChar);
  } // TODO: Add bold script when it is supported by a KaTeX font.

} // "k" is the only double struck lower case letter in the KaTeX fonts.


symbols_wideChar = String.fromCharCode(0xD835, 0xDD5C); // k double struck

defineSymbol(symbols_math, main, mathord, "k", symbols_wideChar);
defineSymbol(symbols_text, main, symbols_textord, "k", symbols_wideChar); // Next, some wide character numerals

for (var _i4 = 0; _i4 < 10; _i4++) {
  var _ch4 = _i4.toString();

  symbols_wideChar = String.fromCharCode(0xD835, 0xDFCE + _i4); // 0-9 bold

  defineSymbol(symbols_math, main, mathord, _ch4, symbols_wideChar);
  defineSymbol(symbols_text, main, symbols_textord, _ch4, symbols_wideChar);
  symbols_wideChar = String.fromCharCode(0xD835, 0xDFE2 + _i4); // 0-9 sans serif

  defineSymbol(symbols_math, main, mathord, _ch4, symbols_wideChar);
  defineSymbol(symbols_text, main, symbols_textord, _ch4, symbols_wideChar);
  symbols_wideChar = String.fromCharCode(0xD835, 0xDFEC + _i4); // 0-9 bold sans

  defineSymbol(symbols_math, main, mathord, _ch4, symbols_wideChar);
  defineSymbol(symbols_text, main, symbols_textord, _ch4, symbols_wideChar);
  symbols_wideChar = String.fromCharCode(0xD835, 0xDFF6 + _i4); // 0-9 monospace

  defineSymbol(symbols_math, main, mathord, _ch4, symbols_wideChar);
  defineSymbol(symbols_text, main, symbols_textord, _ch4, symbols_wideChar);
} // We add these Latin-1 letters as symbols for backwards-compatibility,
// but they are not actually in the font, nor are they supported by the
// Unicode accent mechanism, so they fall back to Times font and look ugly.
// TODO(edemaine): Fix this.


var extraLatin = "ÇÐÞçþ";

for (var _i5 = 0; _i5 < extraLatin.length; _i5++) {
  var _ch5 = extraLatin.charAt(_i5);

  defineSymbol(symbols_math, main, mathord, _ch5, _ch5);
  defineSymbol(symbols_text, main, symbols_textord, _ch5, _ch5);
}

defineSymbol(symbols_text, main, symbols_textord, "ð", "ð"); // Unicode versions of existing characters

defineSymbol(symbols_text, main, symbols_textord, "\u2013", "–");
defineSymbol(symbols_text, main, symbols_textord, "\u2014", "—");
defineSymbol(symbols_text, main, symbols_textord, "\u2018", "‘");
defineSymbol(symbols_text, main, symbols_textord, "\u2019", "’");
defineSymbol(symbols_text, main, symbols_textord, "\u201C", "“");
defineSymbol(symbols_text, main, symbols_textord, "\u201D", "”");
// CONCATENATED MODULE: ./src/wide-character.js
/**
 * This file provides support for Unicode range U+1D400 to U+1D7FF,
 * Mathematical Alphanumeric Symbols.
 *
 * Function wideCharacterFont takes a wide character as input and returns
 * the font information necessary to render it properly.
 */

/**
 * Data below is from https://www.unicode.org/charts/PDF/U1D400.pdf
 * That document sorts characters into groups by font type, say bold or italic.
 *
 * In the arrays below, each subarray consists three elements:
 *      * The CSS class of that group when in math mode.
 *      * The CSS class of that group when in text mode.
 *      * The font name, so that KaTeX can get font metrics.
 */

var wideLatinLetterData = [["mathbf", "textbf", "Main-Bold"], // A-Z bold upright
["mathbf", "textbf", "Main-Bold"], // a-z bold upright
["mathdefault", "textit", "Math-Italic"], // A-Z italic
["mathdefault", "textit", "Math-Italic"], // a-z italic
["boldsymbol", "boldsymbol", "Main-BoldItalic"], // A-Z bold italic
["boldsymbol", "boldsymbol", "Main-BoldItalic"], // a-z bold italic
// Map fancy A-Z letters to script, not calligraphic.
// This aligns with unicode-math and math fonts (except Cambria Math).
["mathscr", "textscr", "Script-Regular"], // A-Z script
["", "", ""], // a-z script.  No font
["", "", ""], // A-Z bold script. No font
["", "", ""], // a-z bold script. No font
["mathfrak", "textfrak", "Fraktur-Regular"], // A-Z Fraktur
["mathfrak", "textfrak", "Fraktur-Regular"], // a-z Fraktur
["mathbb", "textbb", "AMS-Regular"], // A-Z double-struck
["mathbb", "textbb", "AMS-Regular"], // k double-struck
["", "", ""], // A-Z bold Fraktur No font metrics
["", "", ""], // a-z bold Fraktur.   No font.
["mathsf", "textsf", "SansSerif-Regular"], // A-Z sans-serif
["mathsf", "textsf", "SansSerif-Regular"], // a-z sans-serif
["mathboldsf", "textboldsf", "SansSerif-Bold"], // A-Z bold sans-serif
["mathboldsf", "textboldsf", "SansSerif-Bold"], // a-z bold sans-serif
["mathitsf", "textitsf", "SansSerif-Italic"], // A-Z italic sans-serif
["mathitsf", "textitsf", "SansSerif-Italic"], // a-z italic sans-serif
["", "", ""], // A-Z bold italic sans. No font
["", "", ""], // a-z bold italic sans. No font
["mathtt", "texttt", "Typewriter-Regular"], // A-Z monospace
["mathtt", "texttt", "Typewriter-Regular"]];
var wideNumeralData = [["mathbf", "textbf", "Main-Bold"], // 0-9 bold
["", "", ""], // 0-9 double-struck. No KaTeX font.
["mathsf", "textsf", "SansSerif-Regular"], // 0-9 sans-serif
["mathboldsf", "textboldsf", "SansSerif-Bold"], // 0-9 bold sans-serif
["mathtt", "texttt", "Typewriter-Regular"]];
var wide_character_wideCharacterFont = function wideCharacterFont(wideChar, mode) {
  // IE doesn't support codePointAt(). So work with the surrogate pair.
  var H = wideChar.charCodeAt(0); // high surrogate

  var L = wideChar.charCodeAt(1); // low surrogate

  var codePoint = (H - 0xD800) * 0x400 + (L - 0xDC00) + 0x10000;
  var j = mode === "math" ? 0 : 1; // column index for CSS class.

  if (0x1D400 <= codePoint && codePoint < 0x1D6A4) {
    // wideLatinLetterData contains exactly 26 chars on each row.
    // So we can calculate the relevant row. No traverse necessary.
    var i = Math.floor((codePoint - 0x1D400) / 26);
    return [wideLatinLetterData[i][2], wideLatinLetterData[i][j]];
  } else if (0x1D7CE <= codePoint && codePoint <= 0x1D7FF) {
    // Numerals, ten per row.
    var _i = Math.floor((codePoint - 0x1D7CE) / 10);

    return [wideNumeralData[_i][2], wideNumeralData[_i][j]];
  } else if (codePoint === 0x1D6A5 || codePoint === 0x1D6A6) {
    // dotless i or j
    return [wideLatinLetterData[0][2], wideLatinLetterData[0][j]];
  } else if (0x1D6A6 < codePoint && codePoint < 0x1D7CE) {
    // Greek letters. Not supported, yet.
    return ["", ""];
  } else {
    // We don't support any wide characters outside 1D400–1D7FF.
    throw new src_ParseError("Unsupported character: " + wideChar);
  }
};
// CONCATENATED MODULE: ./src/Options.js
/**
 * This file contains information about the options that the Parser carries
 * around with it while parsing. Data is held in an `Options` object, and when
 * recursing, a new `Options` object can be created with the `.with*` and
 * `.reset` functions.
 */

var sizeStyleMap = [// Each element contains [textsize, scriptsize, scriptscriptsize].
// The size mappings are taken from TeX with \normalsize=10pt.
[1, 1, 1], // size1: [5, 5, 5]              \tiny
[2, 1, 1], // size2: [6, 5, 5]
[3, 1, 1], // size3: [7, 5, 5]              \scriptsize
[4, 2, 1], // size4: [8, 6, 5]              \footnotesize
[5, 2, 1], // size5: [9, 6, 5]              \small
[6, 3, 1], // size6: [10, 7, 5]             \normalsize
[7, 4, 2], // size7: [12, 8, 6]             \large
[8, 6, 3], // size8: [14.4, 10, 7]          \Large
[9, 7, 6], // size9: [17.28, 12, 10]        \LARGE
[10, 8, 7], // size10: [20.74, 14.4, 12]     \huge
[11, 10, 9]];
var sizeMultipliers = [// fontMetrics.js:getGlobalMetrics also uses size indexes, so if
// you change size indexes, change that function.
0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.2, 1.44, 1.728, 2.074, 2.488];

var sizeAtStyle = function sizeAtStyle(size, style) {
  return style.size < 2 ? size : sizeStyleMap[size - 1][style.size - 1];
};

/**
 * This is the main options class. It contains the current style, size, color,
 * and font.
 *
 * Options objects should not be modified. To create a new Options with
 * different properties, call a `.having*` method.
 */
var Options_Options =
/*#__PURE__*/
function () {
  // A font family applies to a group of fonts (i.e. SansSerif), while a font
  // represents a specific font (i.e. SansSerif Bold).
  // See: https://tex.stackexchange.com/questions/22350/difference-between-textrm-and-mathrm

  /**
   * The base size index.
   */
  function Options(data) {
    this.style = void 0;
    this.color = void 0;
    this.size = void 0;
    this.textSize = void 0;
    this.phantom = void 0;
    this.font = void 0;
    this.fontFamily = void 0;
    this.fontWeight = void 0;
    this.fontShape = void 0;
    this.sizeMultiplier = void 0;
    this.maxSize = void 0;
    this._fontMetrics = void 0;
    this.style = data.style;
    this.color = data.color;
    this.size = data.size || Options.BASESIZE;
    this.textSize = data.textSize || this.size;
    this.phantom = !!data.phantom;
    this.font = data.font || "";
    this.fontFamily = data.fontFamily || "";
    this.fontWeight = data.fontWeight || '';
    this.fontShape = data.fontShape || '';
    this.sizeMultiplier = sizeMultipliers[this.size - 1];
    this.maxSize = data.maxSize;
    this._fontMetrics = undefined;
  }
  /**
   * Returns a new options object with the same properties as "this".  Properties
   * from "extension" will be copied to the new options object.
   */


  var _proto = Options.prototype;

  _proto.extend = function extend(extension) {
    var data = {
      style: this.style,
      size: this.size,
      textSize: this.textSize,
      color: this.color,
      phantom: this.phantom,
      font: this.font,
      fontFamily: this.fontFamily,
      fontWeight: this.fontWeight,
      fontShape: this.fontShape,
      maxSize: this.maxSize
    };

    for (var key in extension) {
      if (extension.hasOwnProperty(key)) {
        data[key] = extension[key];
      }
    }

    return new Options(data);
  };
  /**
   * Return an options object with the given style. If `this.style === style`,
   * returns `this`.
   */


  _proto.havingStyle = function havingStyle(style) {
    if (this.style === style) {
      return this;
    } else {
      return this.extend({
        style: style,
        size: sizeAtStyle(this.textSize, style)
      });
    }
  };
  /**
   * Return an options object with a cramped version of the current style. If
   * the current style is cramped, returns `this`.
   */


  _proto.havingCrampedStyle = function havingCrampedStyle() {
    return this.havingStyle(this.style.cramp());
  };
  /**
   * Return an options object with the given size and in at least `\textstyle`.
   * Returns `this` if appropriate.
   */


  _proto.havingSize = function havingSize(size) {
    if (this.size === size && this.textSize === size) {
      return this;
    } else {
      return this.extend({
        style: this.style.text(),
        size: size,
        textSize: size,
        sizeMultiplier: sizeMultipliers[size - 1]
      });
    }
  };
  /**
   * Like `this.havingSize(BASESIZE).havingStyle(style)`. If `style` is omitted,
   * changes to at least `\textstyle`.
   */


  _proto.havingBaseStyle = function havingBaseStyle(style) {
    style = style || this.style.text();
    var wantSize = sizeAtStyle(Options.BASESIZE, style);

    if (this.size === wantSize && this.textSize === Options.BASESIZE && this.style === style) {
      return this;
    } else {
      return this.extend({
        style: style,
        size: wantSize
      });
    }
  };
  /**
   * Remove the effect of sizing changes such as \Huge.
   * Keep the effect of the current style, such as \scriptstyle.
   */


  _proto.havingBaseSizing = function havingBaseSizing() {
    var size;

    switch (this.style.id) {
      case 4:
      case 5:
        size = 3; // normalsize in scriptstyle

        break;

      case 6:
      case 7:
        size = 1; // normalsize in scriptscriptstyle

        break;

      default:
        size = 6;
      // normalsize in textstyle or displaystyle
    }

    return this.extend({
      style: this.style.text(),
      size: size
    });
  };
  /**
   * Create a new options object with the given color.
   */


  _proto.withColor = function withColor(color) {
    return this.extend({
      color: color
    });
  };
  /**
   * Create a new options object with "phantom" set to true.
   */


  _proto.withPhantom = function withPhantom() {
    return this.extend({
      phantom: true
    });
  };
  /**
   * Creates a new options object with the given math font or old text font.
   * @type {[type]}
   */


  _proto.withFont = function withFont(font) {
    return this.extend({
      font: font
    });
  };
  /**
   * Create a new options objects with the given fontFamily.
   */


  _proto.withTextFontFamily = function withTextFontFamily(fontFamily) {
    return this.extend({
      fontFamily: fontFamily,
      font: ""
    });
  };
  /**
   * Creates a new options object with the given font weight
   */


  _proto.withTextFontWeight = function withTextFontWeight(fontWeight) {
    return this.extend({
      fontWeight: fontWeight,
      font: ""
    });
  };
  /**
   * Creates a new options object with the given font weight
   */


  _proto.withTextFontShape = function withTextFontShape(fontShape) {
    return this.extend({
      fontShape: fontShape,
      font: ""
    });
  };
  /**
   * Return the CSS sizing classes required to switch from enclosing options
   * `oldOptions` to `this`. Returns an array of classes.
   */


  _proto.sizingClasses = function sizingClasses(oldOptions) {
    if (oldOptions.size !== this.size) {
      return ["sizing", "reset-size" + oldOptions.size, "size" + this.size];
    } else {
      return [];
    }
  };
  /**
   * Return the CSS sizing classes required to switch to the base size. Like
   * `this.havingSize(BASESIZE).sizingClasses(this)`.
   */


  _proto.baseSizingClasses = function baseSizingClasses() {
    if (this.size !== Options.BASESIZE) {
      return ["sizing", "reset-size" + this.size, "size" + Options.BASESIZE];
    } else {
      return [];
    }
  };
  /**
   * Return the font metrics for this size.
   */


  _proto.fontMetrics = function fontMetrics() {
    if (!this._fontMetrics) {
      this._fontMetrics = getGlobalMetrics(this.size);
    }

    return this._fontMetrics;
  };
  /**
   * A map of color names to CSS colors.
   * TODO(emily): Remove this when we have real macros
   */


  /**
   * Gets the CSS color of the current options object, accounting for the
   * `colorMap`.
   */
  _proto.getColor = function getColor() {
    if (this.phantom) {
      return "transparent";
    } else if (this.color != null && Options.colorMap.hasOwnProperty(this.color)) {
      return Options.colorMap[this.color];
    } else {
      return this.color;
    }
  };

  return Options;
}();

Options_Options.BASESIZE = 6;
Options_Options.colorMap = {
  "katex-blue": "#6495ed",
  "katex-orange": "#ffa500",
  "katex-pink": "#ff00af",
  "katex-red": "#df0030",
  "katex-green": "#28ae7b",
  "katex-gray": "gray",
  "katex-purple": "#9d38bd",
  "katex-blueA": "#ccfaff",
  "katex-blueB": "#80f6ff",
  "katex-blueC": "#63d9ea",
  "katex-blueD": "#11accd",
  "katex-blueE": "#0c7f99",
  "katex-tealA": "#94fff5",
  "katex-tealB": "#26edd5",
  "katex-tealC": "#01d1c1",
  "katex-tealD": "#01a995",
  "katex-tealE": "#208170",
  "katex-greenA": "#b6ffb0",
  "katex-greenB": "#8af281",
  "katex-greenC": "#74cf70",
  "katex-greenD": "#1fab54",
  "katex-greenE": "#0d923f",
  "katex-goldA": "#ffd0a9",
  "katex-goldB": "#ffbb71",
  "katex-goldC": "#ff9c39",
  "katex-goldD": "#e07d10",
  "katex-goldE": "#a75a05",
  "katex-redA": "#fca9a9",
  "katex-redB": "#ff8482",
  "katex-redC": "#f9685d",
  "katex-redD": "#e84d39",
  "katex-redE": "#bc2612",
  "katex-maroonA": "#ffbde0",
  "katex-maroonB": "#ff92c6",
  "katex-maroonC": "#ed5fa6",
  "katex-maroonD": "#ca337c",
  "katex-maroonE": "#9e034e",
  "katex-purpleA": "#ddd7ff",
  "katex-purpleB": "#c6b9fc",
  "katex-purpleC": "#aa87ff",
  "katex-purpleD": "#7854ab",
  "katex-purpleE": "#543b78",
  "katex-mintA": "#f5f9e8",
  "katex-mintB": "#edf2df",
  "katex-mintC": "#e0e5cc",
  "katex-grayA": "#f6f7f7",
  "katex-grayB": "#f0f1f2",
  "katex-grayC": "#e3e5e6",
  "katex-grayD": "#d6d8da",
  "katex-grayE": "#babec2",
  "katex-grayF": "#888d93",
  "katex-grayG": "#626569",
  "katex-grayH": "#3b3e40",
  "katex-grayI": "#21242c",
  "katex-kaBlue": "#314453",
  "katex-kaGreen": "#71B307"
};
/* harmony default export */ var src_Options = (Options_Options);
// CONCATENATED MODULE: ./src/units.js
/**
 * This file does conversion between units.  In particular, it provides
 * calculateSize to convert other units into ems.
 */

 // This table gives the number of TeX pts in one of each *absolute* TeX unit.
// Thus, multiplying a length by this number converts the length from units
// into pts.  Dividing the result by ptPerEm gives the number of ems
// *assuming* a font size of ptPerEm (normal size, normal style).

var ptPerUnit = {
  // https://en.wikibooks.org/wiki/LaTeX/Lengths and
  // https://tex.stackexchange.com/a/8263
  "pt": 1,
  // TeX point
  "mm": 7227 / 2540,
  // millimeter
  "cm": 7227 / 254,
  // centimeter
  "in": 72.27,
  // inch
  "bp": 803 / 800,
  // big (PostScript) points
  "pc": 12,
  // pica
  "dd": 1238 / 1157,
  // didot
  "cc": 14856 / 1157,
  // cicero (12 didot)
  "nd": 685 / 642,
  // new didot
  "nc": 1370 / 107,
  // new cicero (12 new didot)
  "sp": 1 / 65536,
  // scaled point (TeX's internal smallest unit)
  // https://tex.stackexchange.com/a/41371
  "px": 803 / 800 // \pdfpxdimen defaults to 1 bp in pdfTeX and LuaTeX

}; // Dictionary of relative units, for fast validity testing.

var relativeUnit = {
  "ex": true,
  "em": true,
  "mu": true
};

/**
 * Determine whether the specified unit (either a string defining the unit
 * or a "size" parse node containing a unit field) is valid.
 */
var validUnit = function validUnit(unit) {
  if (typeof unit !== "string") {
    unit = unit.unit;
  }

  return unit in ptPerUnit || unit in relativeUnit || unit === "ex";
};
/*
 * Convert a "size" parse node (with numeric "number" and string "unit" fields,
 * as parsed by functions.js argType "size") into a CSS em value for the
 * current style/scale.  `options` gives the current options.
 */

var units_calculateSize = function calculateSize(sizeValue, options) {
  var scale;

  if (sizeValue.unit in ptPerUnit) {
    // Absolute units
    scale = ptPerUnit[sizeValue.unit] // Convert unit to pt
    / options.fontMetrics().ptPerEm // Convert pt to CSS em
    / options.sizeMultiplier; // Unscale to make absolute units
  } else if (sizeValue.unit === "mu") {
    // `mu` units scale with scriptstyle/scriptscriptstyle.
    scale = options.fontMetrics().cssEmPerMu;
  } else {
    // Other relative units always refer to the *textstyle* font
    // in the current size.
    var unitOptions;

    if (options.style.isTight()) {
      // isTight() means current style is script/scriptscript.
      unitOptions = options.havingStyle(options.style.text());
    } else {
      unitOptions = options;
    } // TODO: In TeX these units are relative to the quad of the current
    // *text* font, e.g. cmr10. KaTeX instead uses values from the
    // comparably-sized *Computer Modern symbol* font. At 10pt, these
    // match. At 7pt and 5pt, they differ: cmr7=1.138894, cmsy7=1.170641;
    // cmr5=1.361133, cmsy5=1.472241. Consider $\scriptsize a\kern1emb$.
    // TeX \showlists shows a kern of 1.13889 * fontsize;
    // KaTeX shows a kern of 1.171 * fontsize.


    if (sizeValue.unit === "ex") {
      scale = unitOptions.fontMetrics().xHeight;
    } else if (sizeValue.unit === "em") {
      scale = unitOptions.fontMetrics().quad;
    } else {
      throw new src_ParseError("Invalid unit: '" + sizeValue.unit + "'");
    }

    if (unitOptions !== options) {
      scale *= unitOptions.sizeMultiplier / options.sizeMultiplier;
    }
  }

  return Math.min(sizeValue.number * scale, options.maxSize);
};
// CONCATENATED MODULE: ./src/buildCommon.js
/* eslint no-console:0 */

/**
 * This module contains general functions that can be used for building
 * different kinds of domTree nodes in a consistent manner.
 */







// The following have to be loaded from Main-Italic font, using class mathit
var mathitLetters = ["\\imath", "ı", // dotless i
"\\jmath", "ȷ", // dotless j
"\\pounds", "\\mathsterling", "\\textsterling", "£"];
/**
 * Looks up the given symbol in fontMetrics, after applying any symbol
 * replacements defined in symbol.js
 */

var buildCommon_lookupSymbol = function lookupSymbol(value, // TODO(#963): Use a union type for this.
fontName, mode) {
  // Replace the value with its replaced value from symbol.js
  if (src_symbols[mode][value] && src_symbols[mode][value].replace) {
    value = src_symbols[mode][value].replace;
  }

  return {
    value: value,
    metrics: getCharacterMetrics(value, fontName, mode)
  };
};
/**
 * Makes a symbolNode after translation via the list of symbols in symbols.js.
 * Correctly pulls out metrics for the character, and optionally takes a list of
 * classes to be attached to the node.
 *
 * TODO: make argument order closer to makeSpan
 * TODO: add a separate argument for math class (e.g. `mop`, `mbin`), which
 * should if present come first in `classes`.
 * TODO(#953): Make `options` mandatory and always pass it in.
 */


var buildCommon_makeSymbol = function makeSymbol(value, fontName, mode, options, classes) {
  var lookup = buildCommon_lookupSymbol(value, fontName, mode);
  var metrics = lookup.metrics;
  value = lookup.value;
  var symbolNode;

  if (metrics) {
    var italic = metrics.italic;

    if (mode === "text" || options && options.font === "mathit") {
      italic = 0;
    }

    symbolNode = new domTree_SymbolNode(value, metrics.height, metrics.depth, italic, metrics.skew, metrics.width, classes);
  } else {
    // TODO(emily): Figure out a good way to only print this in development
    typeof console !== "undefined" && console.warn("No character metrics for '" + value + "' in style '" + fontName + "'");
    symbolNode = new domTree_SymbolNode(value, 0, 0, 0, 0, 0, classes);
  }

  if (options) {
    symbolNode.maxFontSize = options.sizeMultiplier;

    if (options.style.isTight()) {
      symbolNode.classes.push("mtight");
    }

    var color = options.getColor();

    if (color) {
      symbolNode.style.color = color;
    }
  }

  return symbolNode;
};
/**
 * Makes a symbol in Main-Regular or AMS-Regular.
 * Used for rel, bin, open, close, inner, and punct.
 *
 * TODO(#953): Make `options` mandatory and always pass it in.
 */


var buildCommon_mathsym = function mathsym(value, mode, options, classes) {
  if (classes === void 0) {
    classes = [];
  }

  // Decide what font to render the symbol in by its entry in the symbols
  // table.
  // Have a special case for when the value = \ because the \ is used as a
  // textord in unsupported command errors but cannot be parsed as a regular
  // text ordinal and is therefore not present as a symbol in the symbols
  // table for text, as well as a special case for boldsymbol because it
  // can be used for bold + and -
  if (options && options.font && options.font === "boldsymbol" && buildCommon_lookupSymbol(value, "Main-Bold", mode).metrics) {
    return buildCommon_makeSymbol(value, "Main-Bold", mode, options, classes.concat(["mathbf"]));
  } else if (value === "\\" || src_symbols[mode][value].font === "main") {
    return buildCommon_makeSymbol(value, "Main-Regular", mode, options, classes);
  } else {
    return buildCommon_makeSymbol(value, "AMS-Regular", mode, options, classes.concat(["amsrm"]));
  }
};
/**
 * Determines which of the two font names (Main-Italic and Math-Italic) and
 * corresponding style tags (maindefault or mathit) to use for default math font,
 * depending on the symbol.
 */


var buildCommon_mathdefault = function mathdefault(value, mode, options, classes) {
  if (/[0-9]/.test(value.charAt(0)) || // glyphs for \imath and \jmath do not exist in Math-Italic so we
  // need to use Main-Italic instead
  utils.contains(mathitLetters, value)) {
    return {
      fontName: "Main-Italic",
      fontClass: "mathit"
    };
  } else {
    return {
      fontName: "Math-Italic",
      fontClass: "mathdefault"
    };
  }
};
/**
 * Determines which of the font names (Main-Italic, Math-Italic, and Caligraphic)
 * and corresponding style tags (mathit, mathdefault, or mathcal) to use for font
 * "mathnormal", depending on the symbol.  Use this function instead of fontMap for
 * font "mathnormal".
 */


var buildCommon_mathnormal = function mathnormal(value, mode, options, classes) {
  if (utils.contains(mathitLetters, value)) {
    return {
      fontName: "Main-Italic",
      fontClass: "mathit"
    };
  } else if (/[0-9]/.test(value.charAt(0))) {
    return {
      fontName: "Caligraphic-Regular",
      fontClass: "mathcal"
    };
  } else {
    return {
      fontName: "Math-Italic",
      fontClass: "mathdefault"
    };
  }
};
/**
 * Determines which of the two font names (Main-Bold and Math-BoldItalic) and
 * corresponding style tags (mathbf or boldsymbol) to use for font "boldsymbol",
 * depending on the symbol.  Use this function instead of fontMap for font
 * "boldsymbol".
 */


var boldsymbol = function boldsymbol(value, mode, options, classes) {
  if (buildCommon_lookupSymbol(value, "Math-BoldItalic", mode).metrics) {
    return {
      fontName: "Math-BoldItalic",
      fontClass: "boldsymbol"
    };
  } else {
    // Some glyphs do not exist in Math-BoldItalic so we need to use
    // Main-Bold instead.
    return {
      fontName: "Main-Bold",
      fontClass: "mathbf"
    };
  }
};
/**
 * Makes either a mathord or textord in the correct font and color.
 */


var buildCommon_makeOrd = function makeOrd(group, options, type) {
  var mode = group.mode;
  var text = group.text;
  var classes = ["mord"]; // Math mode or Old font (i.e. \rm)

  var isFont = mode === "math" || mode === "text" && options.font;
  var fontOrFamily = isFont ? options.font : options.fontFamily;

  if (text.charCodeAt(0) === 0xD835) {
    // surrogate pairs get special treatment
    var _wideCharacterFont = wide_character_wideCharacterFont(text, mode),
        wideFontName = _wideCharacterFont[0],
        wideFontClass = _wideCharacterFont[1];

    return buildCommon_makeSymbol(text, wideFontName, mode, options, classes.concat(wideFontClass));
  } else if (fontOrFamily) {
    var fontName;
    var fontClasses;

    if (fontOrFamily === "boldsymbol" || fontOrFamily === "mathnormal") {
      var fontData = fontOrFamily === "boldsymbol" ? boldsymbol(text, mode, options, classes) : buildCommon_mathnormal(text, mode, options, classes);
      fontName = fontData.fontName;
      fontClasses = [fontData.fontClass];
    } else if (utils.contains(mathitLetters, text)) {
      fontName = "Main-Italic";
      fontClasses = ["mathit"];
    } else if (isFont) {
      fontName = fontMap[fontOrFamily].fontName;
      fontClasses = [fontOrFamily];
    } else {
      fontName = retrieveTextFontName(fontOrFamily, options.fontWeight, options.fontShape);
      fontClasses = [fontOrFamily, options.fontWeight, options.fontShape];
    }

    if (buildCommon_lookupSymbol(text, fontName, mode).metrics) {
      return buildCommon_makeSymbol(text, fontName, mode, options, classes.concat(fontClasses));
    } else if (ligatures.hasOwnProperty(text) && fontName.substr(0, 10) === "Typewriter") {
      // Deconstruct ligatures in monospace fonts (\texttt, \tt).
      var parts = [];

      for (var i = 0; i < text.length; i++) {
        parts.push(buildCommon_makeSymbol(text[i], fontName, mode, options, classes.concat(fontClasses)));
      }

      return buildCommon_makeFragment(parts);
    }
  } // Makes a symbol in the default font for mathords and textords.


  if (type === "mathord") {
    var fontLookup = buildCommon_mathdefault(text, mode, options, classes);
    return buildCommon_makeSymbol(text, fontLookup.fontName, mode, options, classes.concat([fontLookup.fontClass]));
  } else if (type === "textord") {
    var font = src_symbols[mode][text] && src_symbols[mode][text].font;

    if (font === "ams") {
      var _fontName = retrieveTextFontName("amsrm", options.fontWeight, options.fontShape);

      return buildCommon_makeSymbol(text, _fontName, mode, options, classes.concat("amsrm", options.fontWeight, options.fontShape));
    } else if (font === "main" || !font) {
      var _fontName2 = retrieveTextFontName("textrm", options.fontWeight, options.fontShape);

      return buildCommon_makeSymbol(text, _fontName2, mode, options, classes.concat(options.fontWeight, options.fontShape));
    } else {
      // fonts added by plugins
      var _fontName3 = retrieveTextFontName(font, options.fontWeight, options.fontShape); // We add font name as a css class


      return buildCommon_makeSymbol(text, _fontName3, mode, options, classes.concat(_fontName3, options.fontWeight, options.fontShape));
    }
  } else {
    throw new Error("unexpected type: " + type + " in makeOrd");
  }
};
/**
 * Returns true if subsequent symbolNodes have the same classes, skew, maxFont,
 * and styles.
 */


var buildCommon_canCombine = function canCombine(prev, next) {
  if (createClass(prev.classes) !== createClass(next.classes) || prev.skew !== next.skew || prev.maxFontSize !== next.maxFontSize) {
    return false;
  }

  for (var style in prev.style) {
    if (prev.style.hasOwnProperty(style) && prev.style[style] !== next.style[style]) {
      return false;
    }
  }

  for (var _style in next.style) {
    if (next.style.hasOwnProperty(_style) && prev.style[_style] !== next.style[_style]) {
      return false;
    }
  }

  return true;
};
/**
 * Combine consequetive domTree.symbolNodes into a single symbolNode.
 * Note: this function mutates the argument.
 */


var buildCommon_tryCombineChars = function tryCombineChars(chars) {
  for (var i = 0; i < chars.length - 1; i++) {
    var prev = chars[i];
    var next = chars[i + 1];

    if (prev instanceof domTree_SymbolNode && next instanceof domTree_SymbolNode && buildCommon_canCombine(prev, next)) {
      prev.text += next.text;
      prev.height = Math.max(prev.height, next.height);
      prev.depth = Math.max(prev.depth, next.depth); // Use the last character's italic correction since we use
      // it to add padding to the right of the span created from
      // the combined characters.

      prev.italic = next.italic;
      chars.splice(i + 1, 1);
      i--;
    }
  }

  return chars;
};
/**
 * Calculate the height, depth, and maxFontSize of an element based on its
 * children.
 */


var sizeElementFromChildren = function sizeElementFromChildren(elem) {
  var height = 0;
  var depth = 0;
  var maxFontSize = 0;

  for (var i = 0; i < elem.children.length; i++) {
    var child = elem.children[i];

    if (child.height > height) {
      height = child.height;
    }

    if (child.depth > depth) {
      depth = child.depth;
    }

    if (child.maxFontSize > maxFontSize) {
      maxFontSize = child.maxFontSize;
    }
  }

  elem.height = height;
  elem.depth = depth;
  elem.maxFontSize = maxFontSize;
};
/**
 * Makes a span with the given list of classes, list of children, and options.
 *
 * TODO(#953): Ensure that `options` is always provided (currently some call
 * sites don't pass it) and make the type below mandatory.
 * TODO: add a separate argument for math class (e.g. `mop`, `mbin`), which
 * should if present come first in `classes`.
 */


var buildCommon_makeSpan = function makeSpan(classes, children, options, style) {
  var span = new domTree_Span(classes, children, options, style);
  sizeElementFromChildren(span);
  return span;
}; // SVG one is simpler -- doesn't require height, depth, max-font setting.
// This is also a separate method for typesafety.


var buildCommon_makeSvgSpan = function makeSvgSpan(classes, children, options, style) {
  return new domTree_Span(classes, children, options, style);
};

var makeLineSpan = function makeLineSpan(className, options, thickness) {
  var line = buildCommon_makeSpan([className], [], options);
  line.height = thickness || options.fontMetrics().defaultRuleThickness;
  line.style.borderBottomWidth = line.height + "em";
  line.maxFontSize = 1.0;
  return line;
};
/**
 * Makes an anchor with the given href, list of classes, list of children,
 * and options.
 */


var buildCommon_makeAnchor = function makeAnchor(href, classes, children, options) {
  var anchor = new domTree_Anchor(href, classes, children, options);
  sizeElementFromChildren(anchor);
  return anchor;
};
/**
 * Makes a document fragment with the given list of children.
 */


var buildCommon_makeFragment = function makeFragment(children) {
  var fragment = new tree_DocumentFragment(children);
  sizeElementFromChildren(fragment);
  return fragment;
};
/**
 * Wraps group in a span if it's a document fragment, allowing to apply classes
 * and styles
 */


var buildCommon_wrapFragment = function wrapFragment(group, options) {
  if (group instanceof tree_DocumentFragment) {
    return buildCommon_makeSpan([], [group], options);
  }

  return group;
}; // These are exact object types to catch typos in the names of the optional fields.


// Computes the updated `children` list and the overall depth.
//
// This helper function for makeVList makes it easier to enforce type safety by
// allowing early exits (returns) in the logic.
var getVListChildrenAndDepth = function getVListChildrenAndDepth(params) {
  if (params.positionType === "individualShift") {
    var oldChildren = params.children;
    var children = [oldChildren[0]]; // Add in kerns to the list of params.children to get each element to be
    // shifted to the correct specified shift

    var _depth = -oldChildren[0].shift - oldChildren[0].elem.depth;

    var currPos = _depth;

    for (var i = 1; i < oldChildren.length; i++) {
      var diff = -oldChildren[i].shift - currPos - oldChildren[i].elem.depth;
      var size = diff - (oldChildren[i - 1].elem.height + oldChildren[i - 1].elem.depth);
      currPos = currPos + diff;
      children.push({
        type: "kern",
        size: size
      });
      children.push(oldChildren[i]);
    }

    return {
      children: children,
      depth: _depth
    };
  }

  var depth;

  if (params.positionType === "top") {
    // We always start at the bottom, so calculate the bottom by adding up
    // all the sizes
    var bottom = params.positionData;

    for (var _i = 0; _i < params.children.length; _i++) {
      var child = params.children[_i];
      bottom -= child.type === "kern" ? child.size : child.elem.height + child.elem.depth;
    }

    depth = bottom;
  } else if (params.positionType === "bottom") {
    depth = -params.positionData;
  } else {
    var firstChild = params.children[0];

    if (firstChild.type !== "elem") {
      throw new Error('First child must have type "elem".');
    }

    if (params.positionType === "shift") {
      depth = -firstChild.elem.depth - params.positionData;
    } else if (params.positionType === "firstBaseline") {
      depth = -firstChild.elem.depth;
    } else {
      throw new Error("Invalid positionType " + params.positionType + ".");
    }
  }

  return {
    children: params.children,
    depth: depth
  };
};
/**
 * Makes a vertical list by stacking elements and kerns on top of each other.
 * Allows for many different ways of specifying the positioning method.
 *
 * See VListParam documentation above.
 */


var buildCommon_makeVList = function makeVList(params, options) {
  var _getVListChildrenAndD = getVListChildrenAndDepth(params),
      children = _getVListChildrenAndD.children,
      depth = _getVListChildrenAndD.depth; // Create a strut that is taller than any list item. The strut is added to
  // each item, where it will determine the item's baseline. Since it has
  // `overflow:hidden`, the strut's top edge will sit on the item's line box's
  // top edge and the strut's bottom edge will sit on the item's baseline,
  // with no additional line-height spacing. This allows the item baseline to
  // be positioned precisely without worrying about font ascent and
  // line-height.


  var pstrutSize = 0;

  for (var i = 0; i < children.length; i++) {
    var child = children[i];

    if (child.type === "elem") {
      var elem = child.elem;
      pstrutSize = Math.max(pstrutSize, elem.maxFontSize, elem.height);
    }
  }

  pstrutSize += 2;
  var pstrut = buildCommon_makeSpan(["pstrut"], []);
  pstrut.style.height = pstrutSize + "em"; // Create a new list of actual children at the correct offsets

  var realChildren = [];
  var minPos = depth;
  var maxPos = depth;
  var currPos = depth;

  for (var _i2 = 0; _i2 < children.length; _i2++) {
    var _child = children[_i2];

    if (_child.type === "kern") {
      currPos += _child.size;
    } else {
      var _elem = _child.elem;
      var classes = _child.wrapperClasses || [];
      var style = _child.wrapperStyle || {};
      var childWrap = buildCommon_makeSpan(classes, [pstrut, _elem], undefined, style);
      childWrap.style.top = -pstrutSize - currPos - _elem.depth + "em";

      if (_child.marginLeft) {
        childWrap.style.marginLeft = _child.marginLeft;
      }

      if (_child.marginRight) {
        childWrap.style.marginRight = _child.marginRight;
      }

      realChildren.push(childWrap);
      currPos += _elem.height + _elem.depth;
    }

    minPos = Math.min(minPos, currPos);
    maxPos = Math.max(maxPos, currPos);
  } // The vlist contents go in a table-cell with `vertical-align:bottom`.
  // This cell's bottom edge will determine the containing table's baseline
  // without overly expanding the containing line-box.


  var vlist = buildCommon_makeSpan(["vlist"], realChildren);
  vlist.style.height = maxPos + "em"; // A second row is used if necessary to represent the vlist's depth.

  var rows;

  if (minPos < 0) {
    // We will define depth in an empty span with display: table-cell.
    // It should render with the height that we define. But Chrome, in
    // contenteditable mode only, treats that span as if it contains some
    // text content. And that min-height over-rides our desired height.
    // So we put another empty span inside the depth strut span.
    var emptySpan = buildCommon_makeSpan([], []);
    var depthStrut = buildCommon_makeSpan(["vlist"], [emptySpan]);
    depthStrut.style.height = -minPos + "em"; // Safari wants the first row to have inline content; otherwise it
    // puts the bottom of the *second* row on the baseline.

    var topStrut = buildCommon_makeSpan(["vlist-s"], [new domTree_SymbolNode("\u200B")]);
    rows = [buildCommon_makeSpan(["vlist-r"], [vlist, topStrut]), buildCommon_makeSpan(["vlist-r"], [depthStrut])];
  } else {
    rows = [buildCommon_makeSpan(["vlist-r"], [vlist])];
  }

  var vtable = buildCommon_makeSpan(["vlist-t"], rows);

  if (rows.length === 2) {
    vtable.classes.push("vlist-t2");
  }

  vtable.height = maxPos;
  vtable.depth = -minPos;
  return vtable;
}; // Glue is a concept from TeX which is a flexible space between elements in
// either a vertical or horizontal list. In KaTeX, at least for now, it's
// static space between elements in a horizontal layout.


var buildCommon_makeGlue = function makeGlue(measurement, options) {
  // Make an empty span for the space
  var rule = buildCommon_makeSpan(["mspace"], [], options);
  var size = units_calculateSize(measurement, options);
  rule.style.marginRight = size + "em";
  return rule;
}; // Takes font options, and returns the appropriate fontLookup name


var retrieveTextFontName = function retrieveTextFontName(fontFamily, fontWeight, fontShape) {
  var baseFontName = "";

  switch (fontFamily) {
    case "amsrm":
      baseFontName = "AMS";
      break;

    case "textrm":
      baseFontName = "Main";
      break;

    case "textsf":
      baseFontName = "SansSerif";
      break;

    case "texttt":
      baseFontName = "Typewriter";
      break;

    default:
      baseFontName = fontFamily;
    // use fonts added by a plugin
  }

  var fontStylesName;

  if (fontWeight === "textbf" && fontShape === "textit") {
    fontStylesName = "BoldItalic";
  } else if (fontWeight === "textbf") {
    fontStylesName = "Bold";
  } else if (fontWeight === "textit") {
    fontStylesName = "Italic";
  } else {
    fontStylesName = "Regular";
  }

  return baseFontName + "-" + fontStylesName;
};
/**
 * Maps TeX font commands to objects containing:
 * - variant: string used for "mathvariant" attribute in buildMathML.js
 * - fontName: the "style" parameter to fontMetrics.getCharacterMetrics
 */
// A map between tex font commands an MathML mathvariant attribute values


var fontMap = {
  // styles
  "mathbf": {
    variant: "bold",
    fontName: "Main-Bold"
  },
  "mathrm": {
    variant: "normal",
    fontName: "Main-Regular"
  },
  "textit": {
    variant: "italic",
    fontName: "Main-Italic"
  },
  "mathit": {
    variant: "italic",
    fontName: "Main-Italic"
  },
  // Default math font, "mathnormal" and "boldsymbol" are missing because they
  // require the use of several fonts: Main-Italic and Math-Italic for default
  // math font, Main-Italic, Math-Italic, Caligraphic for "mathnormal", and
  // Math-BoldItalic and Main-Bold for "boldsymbol".  This is handled by a
  // special case in makeOrd which ends up calling mathdefault, mathnormal,
  // and boldsymbol.
  // families
  "mathbb": {
    variant: "double-struck",
    fontName: "AMS-Regular"
  },
  "mathcal": {
    variant: "script",
    fontName: "Caligraphic-Regular"
  },
  "mathfrak": {
    variant: "fraktur",
    fontName: "Fraktur-Regular"
  },
  "mathscr": {
    variant: "script",
    fontName: "Script-Regular"
  },
  "mathsf": {
    variant: "sans-serif",
    fontName: "SansSerif-Regular"
  },
  "mathtt": {
    variant: "monospace",
    fontName: "Typewriter-Regular"
  }
};
var svgData = {
  //   path, width, height
  vec: ["vec", 0.471, 0.714],
  // values from the font glyph
  oiintSize1: ["oiintSize1", 0.957, 0.499],
  // oval to overlay the integrand
  oiintSize2: ["oiintSize2", 1.472, 0.659],
  oiiintSize1: ["oiiintSize1", 1.304, 0.499],
  oiiintSize2: ["oiiintSize2", 1.98, 0.659]
};

var buildCommon_staticSvg = function staticSvg(value, options) {
  // Create a span with inline SVG for the element.
  var _svgData$value = svgData[value],
      pathName = _svgData$value[0],
      width = _svgData$value[1],
      height = _svgData$value[2];
  var path = new domTree_PathNode(pathName);
  var svgNode = new SvgNode([path], {
    "width": width + "em",
    "height": height + "em",
    // Override CSS rule `.katex svg { width: 100% }`
    "style": "width:" + width + "em",
    "viewBox": "0 0 " + 1000 * width + " " + 1000 * height,
    "preserveAspectRatio": "xMinYMin"
  });
  var span = buildCommon_makeSvgSpan(["overlay"], [svgNode], options);
  span.height = height;
  span.style.height = height + "em";
  span.style.width = width + "em";
  return span;
};

/* harmony default export */ var buildCommon = ({
  fontMap: fontMap,
  makeSymbol: buildCommon_makeSymbol,
  mathsym: buildCommon_mathsym,
  makeSpan: buildCommon_makeSpan,
  makeSvgSpan: buildCommon_makeSvgSpan,
  makeLineSpan: makeLineSpan,
  makeAnchor: buildCommon_makeAnchor,
  makeFragment: buildCommon_makeFragment,
  wrapFragment: buildCommon_wrapFragment,
  makeVList: buildCommon_makeVList,
  makeOrd: buildCommon_makeOrd,
  makeGlue: buildCommon_makeGlue,
  staticSvg: buildCommon_staticSvg,
  svgData: svgData,
  tryCombineChars: buildCommon_tryCombineChars
});
// CONCATENATED MODULE: ./src/parseNode.js


/**
 * Asserts that the node is of the given type and returns it with stricter
 * typing. Throws if the node's type does not match.
 */
function assertNodeType(node, type) {
  var typedNode = checkNodeType(node, type);

  if (!typedNode) {
    throw new Error("Expected node of type " + type + ", but got " + (node ? "node of type " + node.type : String(node)));
  } // $FlowFixMe: Unsure why.


  return typedNode;
}
/**
 * Returns the node more strictly typed iff it is of the given type. Otherwise,
 * returns null.
 */

function checkNodeType(node, type) {
  if (node && node.type === type) {
    // The definition of ParseNode<TYPE> doesn't communicate to flow that
    // `type: TYPE` (as that's not explicitly mentioned anywhere), though that
    // happens to be true for all our value types.
    // $FlowFixMe
    return node;
  }

  return null;
}
/**
 * Asserts that the node is of the given type and returns it with stricter
 * typing. Throws if the node's type does not match.
 */

function assertAtomFamily(node, family) {
  var typedNode = checkAtomFamily(node, family);

  if (!typedNode) {
    throw new Error("Expected node of type \"atom\" and family \"" + family + "\", but got " + (node ? node.type === "atom" ? "atom of family " + node.family : "node of type " + node.type : String(node)));
  }

  return typedNode;
}
/**
 * Returns the node more strictly typed iff it is of the given type. Otherwise,
 * returns null.
 */

function checkAtomFamily(node, family) {
  return node && node.type === "atom" && node.family === family ? node : null;
}
/**
 * Returns the node more strictly typed iff it is of the given type. Otherwise,
 * returns null.
 */

function assertSymbolNodeType(node) {
  var typedNode = checkSymbolNodeType(node);

  if (!typedNode) {
    throw new Error("Expected node of symbol group type, but got " + (node ? "node of type " + node.type : String(node)));
  }

  return typedNode;
}
/**
 * Returns the node more strictly typed iff it is of the given type. Otherwise,
 * returns null.
 */

function checkSymbolNodeType(node) {
  if (node && (node.type === "atom" || NON_ATOMS.hasOwnProperty(node.type))) {
    // $FlowFixMe
    return node;
  }

  return null;
}
// CONCATENATED MODULE: ./src/spacingData.js
/**
 * Describes spaces between different classes of atoms.
 */
var thinspace = {
  number: 3,
  unit: "mu"
};
var mediumspace = {
  number: 4,
  unit: "mu"
};
var thickspace = {
  number: 5,
  unit: "mu"
}; // Making the type below exact with all optional fields doesn't work due to
// - https://github.com/facebook/flow/issues/4582
// - https://github.com/facebook/flow/issues/5688
// However, since *all* fields are optional, $Shape<> works as suggested in 5688
// above.

// Spacing relationships for display and text styles
var spacings = {
  mord: {
    mop: thinspace,
    mbin: mediumspace,
    mrel: thickspace,
    minner: thinspace
  },
  mop: {
    mord: thinspace,
    mop: thinspace,
    mrel: thickspace,
    minner: thinspace
  },
  mbin: {
    mord: mediumspace,
    mop: mediumspace,
    mopen: mediumspace,
    minner: mediumspace
  },
  mrel: {
    mord: thickspace,
    mop: thickspace,
    mopen: thickspace,
    minner: thickspace
  },
  mopen: {},
  mclose: {
    mop: thinspace,
    mbin: mediumspace,
    mrel: thickspace,
    minner: thinspace
  },
  mpunct: {
    mord: thinspace,
    mop: thinspace,
    mrel: thickspace,
    mopen: thinspace,
    mclose: thinspace,
    mpunct: thinspace,
    minner: thinspace
  },
  minner: {
    mord: thinspace,
    mop: thinspace,
    mbin: mediumspace,
    mrel: thickspace,
    mopen: thinspace,
    mpunct: thinspace,
    minner: thinspace
  }
}; // Spacing relationships for script and scriptscript styles

var tightSpacings = {
  mord: {
    mop: thinspace
  },
  mop: {
    mord: thinspace,
    mop: thinspace
  },
  mbin: {},
  mrel: {},
  mopen: {},
  mclose: {
    mop: thinspace
  },
  mpunct: {},
  minner: {
    mop: thinspace
  }
};
// CONCATENATED MODULE: ./src/defineFunction.js


/**
 * All registered functions.
 * `functions.js` just exports this same dictionary again and makes it public.
 * `Parser.js` requires this dictionary.
 */
var _functions = {};
/**
 * All HTML builders. Should be only used in the `define*` and the `build*ML`
 * functions.
 */

var _htmlGroupBuilders = {};
/**
 * All MathML builders. Should be only used in the `define*` and the `build*ML`
 * functions.
 */

var _mathmlGroupBuilders = {};
function defineFunction(_ref) {
  var type = _ref.type,
      nodeType = _ref.nodeType,
      names = _ref.names,
      props = _ref.props,
      handler = _ref.handler,
      htmlBuilder = _ref.htmlBuilder,
      mathmlBuilder = _ref.mathmlBuilder;
  // Set default values of functions
  var data = {
    type: type,
    numArgs: props.numArgs,
    argTypes: props.argTypes,
    greediness: props.greediness === undefined ? 1 : props.greediness,
    allowedInText: !!props.allowedInText,
    allowedInMath: props.allowedInMath === undefined ? true : props.allowedInMath,
    numOptionalArgs: props.numOptionalArgs || 0,
    infix: !!props.infix,
    consumeMode: props.consumeMode,
    handler: handler
  };

  for (var i = 0; i < names.length; ++i) {
    // TODO: The value type of _functions should be a type union of all
    // possible `FunctionSpec<>` possibilities instead of `FunctionSpec<*>`,
    // which is an existential type.
    // $FlowFixMe
    _functions[names[i]] = data;
  }

  if (type) {
    if (htmlBuilder) {
      _htmlGroupBuilders[type] = htmlBuilder;
    }

    if (mathmlBuilder) {
      _mathmlGroupBuilders[type] = mathmlBuilder;
    }
  }
}
/**
 * Use this to register only the HTML and MathML builders for a function (e.g.
 * if the function's ParseNode is generated in Parser.js rather than via a
 * stand-alone handler provided to `defineFunction`).
 */

function defineFunctionBuilders(_ref2) {
  var type = _ref2.type,
      htmlBuilder = _ref2.htmlBuilder,
      mathmlBuilder = _ref2.mathmlBuilder;
  defineFunction({
    type: type,
    names: [],
    props: {
      numArgs: 0
    },
    handler: function handler() {
      throw new Error('Should never be called.');
    },
    htmlBuilder: htmlBuilder,
    mathmlBuilder: mathmlBuilder
  });
} // Since the corresponding buildHTML/buildMathML function expects a
// list of elements, we normalize for different kinds of arguments

var defineFunction_ordargument = function ordargument(arg) {
  var node = checkNodeType(arg, "ordgroup");
  return node ? node.body : [arg];
};
// CONCATENATED MODULE: ./src/buildHTML.js
/**
 * This file does the main work of building a domTree structure from a parse
 * tree. The entry point is the `buildHTML` function, which takes a parse tree.
 * Then, the buildExpression, buildGroup, and various groupBuilders functions
 * are called, to produce a final HTML tree.
 */









var buildHTML_makeSpan = buildCommon.makeSpan; // Binary atoms (first class `mbin`) change into ordinary atoms (`mord`)
// depending on their surroundings. See TeXbook pg. 442-446, Rules 5 and 6,
// and the text before Rule 19.

var buildHTML_isBinLeftCanceller = function isBinLeftCanceller(node, isRealGroup) {
  // TODO: This code assumes that a node's math class is the first element
  // of its `classes` array. A later cleanup should ensure this, for
  // instance by changing the signature of `makeSpan`.
  if (node) {
    return utils.contains(["mbin", "mopen", "mrel", "mop", "mpunct"], getTypeOfDomTree(node, "right"));
  } else {
    return isRealGroup;
  }
};

var buildHTML_isBinRightCanceller = function isBinRightCanceller(node, isRealGroup) {
  if (node) {
    return utils.contains(["mrel", "mclose", "mpunct"], getTypeOfDomTree(node, "left"));
  } else {
    return isRealGroup;
  }
};

var buildHTML_styleMap = {
  "display": src_Style.DISPLAY,
  "text": src_Style.TEXT,
  "script": src_Style.SCRIPT,
  "scriptscript": src_Style.SCRIPTSCRIPT
};
var DomEnum = {
  mord: "mord",
  mop: "mop",
  mbin: "mbin",
  mrel: "mrel",
  mopen: "mopen",
  mclose: "mclose",
  mpunct: "mpunct",
  minner: "minner"
};

/**
 * Take a list of nodes, build them in order, and return a list of the built
 * nodes. documentFragments are flattened into their contents, so the
 * returned list contains no fragments. `isRealGroup` is true if `expression`
 * is a real group (no atoms will be added on either side), as opposed to
 * a partial group (e.g. one created by \color). `surrounding` is an array
 * consisting type of nodes that will be added to the left and right.
 */
var buildHTML_buildExpression = function buildExpression(expression, options, isRealGroup, surrounding) {
  if (surrounding === void 0) {
    surrounding = [null, null];
  }

  // Parse expressions into `groups`.
  var rawGroups = [];

  for (var i = 0; i < expression.length; i++) {
    var output = buildHTML_buildGroup(expression[i], options);

    if (output instanceof tree_DocumentFragment) {
      var children = output.children;
      rawGroups.push.apply(rawGroups, children);
    } else {
      rawGroups.push(output);
    }
  } // At this point `rawGroups` consists entirely of `symbolNode`s and `span`s.
  // Ignore explicit spaces (e.g., \;, \,) when determining what implicit
  // spacing should go between atoms of different classes, and add dummy
  // spans for determining spacings between surrounding atoms.


  var nonSpaces = [surrounding[0] ? buildHTML_makeSpan([surrounding[0]], [], options) : null].concat(rawGroups.filter(function (group) {
    return group && group.classes[0] !== "mspace";
  }), [surrounding[1] ? buildHTML_makeSpan([surrounding[1]], [], options) : null]); // Before determining what spaces to insert, perform bin cancellation.
  // Binary operators change to ordinary symbols in some contexts.

  for (var _i = 1; _i < nonSpaces.length - 1; _i++) {
    var nonSpacesI = assert(nonSpaces[_i]);
    var left = buildHTML_getOutermostNode(nonSpacesI, "left");

    if (left.classes[0] === "mbin" && buildHTML_isBinLeftCanceller(nonSpaces[_i - 1], isRealGroup)) {
      left.classes[0] = "mord";
    }

    var right = buildHTML_getOutermostNode(nonSpacesI, "right");

    if (right.classes[0] === "mbin" && buildHTML_isBinRightCanceller(nonSpaces[_i + 1], isRealGroup)) {
      right.classes[0] = "mord";
    }
  }

  var groups = [];
  var j = 0;

  for (var _i2 = 0; _i2 < rawGroups.length; _i2++) {
    groups.push(rawGroups[_i2]); // For any group that is not a space, get the next non-space.  Then
    // lookup what implicit space should be placed between those atoms and
    // add it to groups.

    if (rawGroups[_i2].classes[0] !== "mspace" && j < nonSpaces.length - 1) {
      // if current non-space node is left dummy span, add a glue before
      // first real non-space node
      if (j === 0) {
        groups.pop();
        _i2--;
      } // Get the type of the current non-space node.  If it's a document
      // fragment, get the type of the rightmost node in the fragment.


      var _left = getTypeOfDomTree(nonSpaces[j], "right"); // Get the type of the next non-space node.  If it's a document
      // fragment, get the type of the leftmost node in the fragment.


      var _right = getTypeOfDomTree(nonSpaces[j + 1], "left"); // We use buildExpression inside of sizingGroup, but it returns a
      // document fragment of elements.  sizingGroup sets `isRealGroup`
      // to false to avoid processing spans multiple times.


      if (_left && _right && isRealGroup) {
        var nonSpacesJp1 = assert(nonSpaces[j + 1]);
        var space = isLeftTight(nonSpacesJp1) ? tightSpacings[_left][_right] : spacings[_left][_right];

        if (space) {
          var glueOptions = options;

          if (expression.length === 1) {
            var node = checkNodeType(expression[0], "sizing") || checkNodeType(expression[0], "styling");

            if (!node) {// No match.
            } else if (node.type === "sizing") {
              glueOptions = options.havingSize(node.size);
            } else if (node.type === "styling") {
              glueOptions = options.havingStyle(buildHTML_styleMap[node.style]);
            }
          }

          groups.push(buildCommon.makeGlue(space, glueOptions));
        }
      }

      j++;
    }
  }

  return groups;
}; // Return the outermost node of a domTree.

var buildHTML_getOutermostNode = function getOutermostNode(node, side) {
  if (node instanceof tree_DocumentFragment || node instanceof domTree_Anchor) {
    var children = node.children;

    if (children.length) {
      if (side === "right") {
        return getOutermostNode(children[children.length - 1], "right");
      } else if (side === "left") {
        return getOutermostNode(children[0], "right");
      }
    }
  }

  return node;
}; // Return math atom class (mclass) of a domTree.


var getTypeOfDomTree = function getTypeOfDomTree(node, side) {
  if (!node) {
    return null;
  }

  node = buildHTML_getOutermostNode(node, side); // This makes a lot of assumptions as to where the type of atom
  // appears.  We should do a better job of enforcing this.

  return DomEnum[node.classes[0]] || null;
}; // If `node` is an atom return whether it's been assigned the mtight class.
// If `node` is a document fragment, return the value of isLeftTight() for the
// leftmost node in the fragment.
// 'mtight' indicates that the node is script or scriptscript style.

var isLeftTight = function isLeftTight(node) {
  node = buildHTML_getOutermostNode(node, "left");
  return node.hasClass("mtight");
};
var makeNullDelimiter = function makeNullDelimiter(options, classes) {
  var moreClasses = ["nulldelimiter"].concat(options.baseSizingClasses());
  return buildHTML_makeSpan(classes.concat(moreClasses));
};
/**
 * buildGroup is the function that takes a group and calls the correct groupType
 * function for it. It also handles the interaction of size and style changes
 * between parents and children.
 */

var buildHTML_buildGroup = function buildGroup(group, options, baseOptions) {
  if (!group) {
    return buildHTML_makeSpan();
  }

  if (_htmlGroupBuilders[group.type]) {
    // Call the groupBuilders function
    var groupNode = _htmlGroupBuilders[group.type](group, options); // If the size changed between the parent and the current group, account
    // for that size difference.

    if (baseOptions && options.size !== baseOptions.size) {
      groupNode = buildHTML_makeSpan(options.sizingClasses(baseOptions), [groupNode], options);
      var multiplier = options.sizeMultiplier / baseOptions.sizeMultiplier;
      groupNode.height *= multiplier;
      groupNode.depth *= multiplier;
    }

    return groupNode;
  } else {
    throw new src_ParseError("Got group of unknown type: '" + group.type + "'");
  }
};
/**
 * Combine an array of HTML DOM nodes (e.g., the output of `buildExpression`)
 * into an unbreakable HTML node of class .base, with proper struts to
 * guarantee correct vertical extent.  `buildHTML` calls this repeatedly to
 * make up the entire expression as a sequence of unbreakable units.
 */

function buildHTMLUnbreakable(children, options) {
  // Compute height and depth of this chunk.
  var body = buildHTML_makeSpan(["base"], children, options); // Add strut, which ensures that the top of the HTML element falls at
  // the height of the expression, and the bottom of the HTML element
  // falls at the depth of the expression.
  // We used to have separate top and bottom struts, where the bottom strut
  // would like to use `vertical-align: top`, but in IE 9 this lowers the
  // baseline of the box to the bottom of this strut (instead of staying in
  // the normal place) so we use an absolute value for vertical-align instead.

  var strut = buildHTML_makeSpan(["strut"]);
  strut.style.height = body.height + body.depth + "em";
  strut.style.verticalAlign = -body.depth + "em";
  body.children.unshift(strut);
  return body;
}
/**
 * Take an entire parse tree, and build it into an appropriate set of HTML
 * nodes.
 */


function buildHTML(tree, options) {
  // Strip off outer tag wrapper for processing below.
  var tag = null;

  if (tree.length === 1 && tree[0].type === "tag") {
    tag = tree[0].tag;
    tree = tree[0].body;
  } // Build the expression contained in the tree


  var expression = buildHTML_buildExpression(tree, options, true);
  var children = []; // Create one base node for each chunk between potential line breaks.
  // The TeXBook [p.173] says "A formula will be broken only after a
  // relation symbol like $=$ or $<$ or $\rightarrow$, or after a binary
  // operation symbol like $+$ or $-$ or $\times$, where the relation or
  // binary operation is on the ``outer level'' of the formula (i.e., not
  // enclosed in {...} and not part of an \over construction)."

  var parts = [];

  for (var i = 0; i < expression.length; i++) {
    parts.push(expression[i]);

    if (expression[i].hasClass("mbin") || expression[i].hasClass("mrel") || expression[i].hasClass("allowbreak")) {
      // Put any post-operator glue on same line as operator.
      // Watch for \nobreak along the way.
      var nobreak = false;

      while (i < expression.length - 1 && expression[i + 1].hasClass("mspace")) {
        i++;
        parts.push(expression[i]);

        if (expression[i].hasClass("nobreak")) {
          nobreak = true;
        }
      } // Don't allow break if \nobreak among the post-operator glue.


      if (!nobreak) {
        children.push(buildHTMLUnbreakable(parts, options));
        parts = [];
      }
    } else if (expression[i].hasClass("newline")) {
      // Write the line except the newline
      parts.pop();

      if (parts.length > 0) {
        children.push(buildHTMLUnbreakable(parts, options));
        parts = [];
      } // Put the newline at the top level


      children.push(expression[i]);
    }
  }

  if (parts.length > 0) {
    children.push(buildHTMLUnbreakable(parts, options));
  } // Now, if there was a tag, build it too and append it as a final child.


  var tagChild;

  if (tag) {
    tagChild = buildHTMLUnbreakable(buildHTML_buildExpression(tag, options, true));
    tagChild.classes = ["tag"];
    children.push(tagChild);
  }

  var htmlNode = buildHTML_makeSpan(["katex-html"], children);
  htmlNode.setAttribute("aria-hidden", "true"); // Adjust the strut of the tag to be the maximum height of all children
  // (the height of the enclosing htmlNode) for proper vertical alignment.

  if (tagChild) {
    var strut = tagChild.children[0];
    strut.style.height = htmlNode.height + htmlNode.depth + "em";
    strut.style.verticalAlign = -htmlNode.depth + "em";
  }

  return htmlNode;
}
// CONCATENATED MODULE: ./src/mathMLTree.js
/**
 * These objects store data about MathML nodes. This is the MathML equivalent
 * of the types in domTree.js. Since MathML handles its own rendering, and
 * since we're mainly using MathML to improve accessibility, we don't manage
 * any of the styling state that the plain DOM nodes do.
 *
 * The `toNode` and `toMarkup` functions work simlarly to how they do in
 * domTree.js, creating namespaced DOM nodes and HTML text markup respectively.
 */


function newDocumentFragment(children) {
  return new tree_DocumentFragment(children);
}
/**
 * This node represents a general purpose MathML node of any type. The
 * constructor requires the type of node to create (for example, `"mo"` or
 * `"mspace"`, corresponding to `<mo>` and `<mspace>` tags).
 */

var mathMLTree_MathNode =
/*#__PURE__*/
function () {
  function MathNode(type, children) {
    this.type = void 0;
    this.attributes = void 0;
    this.children = void 0;
    this.type = type;
    this.attributes = {};
    this.children = children || [];
  }
  /**
   * Sets an attribute on a MathML node. MathML depends on attributes to convey a
   * semantic content, so this is used heavily.
   */


  var _proto = MathNode.prototype;

  _proto.setAttribute = function setAttribute(name, value) {
    this.attributes[name] = value;
  };
  /**
   * Gets an attribute on a MathML node.
   */


  _proto.getAttribute = function getAttribute(name) {
    return this.attributes[name];
  };
  /**
   * Converts the math node into a MathML-namespaced DOM element.
   */


  _proto.toNode = function toNode() {
    var node = document.createElementNS("http://www.w3.org/1998/Math/MathML", this.type);

    for (var attr in this.attributes) {
      if (Object.prototype.hasOwnProperty.call(this.attributes, attr)) {
        node.setAttribute(attr, this.attributes[attr]);
      }
    }

    for (var i = 0; i < this.children.length; i++) {
      node.appendChild(this.children[i].toNode());
    }

    return node;
  };
  /**
   * Converts the math node into an HTML markup string.
   */


  _proto.toMarkup = function toMarkup() {
    var markup = "<" + this.type; // Add the attributes

    for (var attr in this.attributes) {
      if (Object.prototype.hasOwnProperty.call(this.attributes, attr)) {
        markup += " " + attr + "=\"";
        markup += utils.escape(this.attributes[attr]);
        markup += "\"";
      }
    }

    markup += ">";

    for (var i = 0; i < this.children.length; i++) {
      markup += this.children[i].toMarkup();
    }

    markup += "</" + this.type + ">";
    return markup;
  };
  /**
   * Converts the math node into a string, similar to innerText, but escaped.
   */


  _proto.toText = function toText() {
    return this.children.map(function (child) {
      return child.toText();
    }).join("");
  };

  return MathNode;
}();
/**
 * This node represents a piece of text.
 */

var mathMLTree_TextNode =
/*#__PURE__*/
function () {
  function TextNode(text, needsEscape) {
    if (needsEscape === void 0) {
      needsEscape = true;
    }

    this.text = void 0;
    this.needsEscape = void 0;
    this.text = text;
    this.needsEscape = needsEscape;
  }
  /**
   * Converts the text node into a DOM text node.
   */


  var _proto2 = TextNode.prototype;

  _proto2.toNode = function toNode() {
    return document.createTextNode(this.toText());
  };
  /**
   * Converts the text node into escaped HTML markup
   * (representing the text itself).
   */


  _proto2.toMarkup = function toMarkup() {
    return this.toText();
  };
  /**
   * Converts the text node into an escaped string
   * (representing the text iteself).
   */


  _proto2.toText = function toText() {
    return this.needsEscape ? utils.escape(this.text) : this.text;
  };

  return TextNode;
}();
/**
 * This node represents a space, but may render as <mspace.../> or as text,
 * depending on the width.
 */

var SpaceNode =
/*#__PURE__*/
function () {
  /**
   * Create a Space node with width given in CSS ems.
   */
  function SpaceNode(width) {
    this.width = void 0;
    this.character = void 0;
    this.width = width; // See https://www.w3.org/TR/2000/WD-MathML2-20000328/chapter6.html
    // for a table of space-like characters.  We consistently use the
    // &LongNames; because Unicode does not have single characters for
    // &ThickSpace; (\u2005\u200a) and all negative spaces.

    if (width >= 0.05555 && width <= 0.05556) {
      this.character = "&VeryThinSpace;"; // \u200a
    } else if (width >= 0.1666 && width <= 0.1667) {
      this.character = "&ThinSpace;"; // \u2009
    } else if (width >= 0.2222 && width <= 0.2223) {
      this.character = "&MediumSpace;"; // \u2005
    } else if (width >= 0.2777 && width <= 0.2778) {
      this.character = "&ThickSpace;"; // \u2005\u200a
    } else if (width >= -0.05556 && width <= -0.05555) {
      this.character = "&NegativeVeryThinSpace;";
    } else if (width >= -0.1667 && width <= -0.1666) {
      this.character = "&NegativeThinSpace;";
    } else if (width >= -0.2223 && width <= -0.2222) {
      this.character = "&NegativeMediumSpace;";
    } else if (width >= -0.2778 && width <= -0.2777) {
      this.character = "&NegativeThickSpace;";
    } else {
      this.character = null;
    }
  }
  /**
   * Converts the math node into a MathML-namespaced DOM element.
   */


  var _proto3 = SpaceNode.prototype;

  _proto3.toNode = function toNode() {
    if (this.character) {
      return document.createTextNode(this.character);
    } else {
      var node = document.createElementNS("http://www.w3.org/1998/Math/MathML", "mspace");
      node.setAttribute("width", this.width + "em");
      return node;
    }
  };
  /**
   * Converts the math node into an HTML markup string.
   */


  _proto3.toMarkup = function toMarkup() {
    if (this.character) {
      return "<mtext>" + this.character + "</mtext>";
    } else {
      return "<mspace width=\"" + this.width + "em\"/>";
    }
  };
  /**
   * Converts the math node into a string, similar to innerText.
   */


  _proto3.toText = function toText() {
    if (this.character) {
      return this.character;
    } else {
      return " ";
    }
  };

  return SpaceNode;
}();

/* harmony default export */ var mathMLTree = ({
  MathNode: mathMLTree_MathNode,
  TextNode: mathMLTree_TextNode,
  SpaceNode: SpaceNode,
  newDocumentFragment: newDocumentFragment
});
// CONCATENATED MODULE: ./src/buildMathML.js
/**
 * This file converts a parse tree into a cooresponding MathML tree. The main
 * entry point is the `buildMathML` function, which takes a parse tree from the
 * parser.
 */









/**
 * Takes a symbol and converts it into a MathML text node after performing
 * optional replacement from symbols.js.
 */
var buildMathML_makeText = function makeText(text, mode, options) {
  if (src_symbols[mode][text] && src_symbols[mode][text].replace && text.charCodeAt(0) !== 0xD835 && !(ligatures.hasOwnProperty(text) && options && (options.fontFamily && options.fontFamily.substr(4, 2) === "tt" || options.font && options.font.substr(4, 2) === "tt"))) {
    text = src_symbols[mode][text].replace;
  }

  return new mathMLTree.TextNode(text);
};
/**
 * Wrap the given array of nodes in an <mrow> node if needed, i.e.,
 * unless the array has length 1.  Always returns a single node.
 */

var buildMathML_makeRow = function makeRow(body) {
  if (body.length === 1) {
    return body[0];
  } else {
    return new mathMLTree.MathNode("mrow", body);
  }
};
/**
 * Returns the math variant as a string or null if none is required.
 */

var buildMathML_getVariant = function getVariant(group, options) {
  // Handle \text... font specifiers as best we can.
  // MathML has a limited list of allowable mathvariant specifiers; see
  // https://www.w3.org/TR/MathML3/chapter3.html#presm.commatt
  if (options.fontFamily === "texttt") {
    return "monospace";
  } else if (options.fontFamily === "textsf") {
    if (options.fontShape === "textit" && options.fontWeight === "textbf") {
      return "sans-serif-bold-italic";
    } else if (options.fontShape === "textit") {
      return "sans-serif-italic";
    } else if (options.fontWeight === "textbf") {
      return "bold-sans-serif";
    } else {
      return "sans-serif";
    }
  } else if (options.fontShape === "textit" && options.fontWeight === "textbf") {
    return "bold-italic";
  } else if (options.fontShape === "textit") {
    return "italic";
  } else if (options.fontWeight === "textbf") {
    return "bold";
  }

  var font = options.font;

  if (!font || font === "mathnormal") {
    return null;
  }

  var mode = group.mode;

  if (font === "mathit") {
    return "italic";
  } else if (font === "boldsymbol") {
    return "bold-italic";
  }

  var text = group.text;

  if (utils.contains(["\\imath", "\\jmath"], text)) {
    return null;
  }

  if (src_symbols[mode][text] && src_symbols[mode][text].replace) {
    text = src_symbols[mode][text].replace;
  }

  var fontName = buildCommon.fontMap[font].fontName;

  if (getCharacterMetrics(text, fontName, mode)) {
    return buildCommon.fontMap[font].variant;
  }

  return null;
};
/**
 * Takes a list of nodes, builds them, and returns a list of the generated
 * MathML nodes.  Also combine consecutive <mtext> outputs into a single
 * <mtext> tag.
 */

var buildMathML_buildExpression = function buildExpression(expression, options) {
  var groups = [];
  var lastGroup;

  for (var i = 0; i < expression.length; i++) {
    var group = buildMathML_buildGroup(expression[i], options);

    if (group instanceof mathMLTree_MathNode && lastGroup instanceof mathMLTree_MathNode) {
      // Concatenate adjacent <mtext>s
      if (group.type === 'mtext' && lastGroup.type === 'mtext' && group.getAttribute('mathvariant') === lastGroup.getAttribute('mathvariant')) {
        var _lastGroup$children;

        (_lastGroup$children = lastGroup.children).push.apply(_lastGroup$children, group.children);

        continue; // Concatenate adjacent <mn>s
      } else if (group.type === 'mn' && lastGroup.type === 'mn') {
        var _lastGroup$children2;

        (_lastGroup$children2 = lastGroup.children).push.apply(_lastGroup$children2, group.children);

        continue; // Concatenate <mn>...</mn> followed by <mi>.</mi>
      } else if (group.type === 'mi' && group.children.length === 1 && lastGroup.type === 'mn') {
        var child = group.children[0];

        if (child instanceof mathMLTree_TextNode && child.text === '.') {
          var _lastGroup$children3;

          (_lastGroup$children3 = lastGroup.children).push.apply(_lastGroup$children3, group.children);

          continue;
        }
      }
    }

    groups.push(group);
    lastGroup = group;
  } // TODO(kevinb): combine \\not with mrels and mords


  return groups;
};
/**
 * Equivalent to buildExpression, but wraps the elements in an <mrow>
 * if there's more than one.  Returns a single node instead of an array.
 */

var buildExpressionRow = function buildExpressionRow(expression, options) {
  return buildMathML_makeRow(buildMathML_buildExpression(expression, options));
};
/**
 * Takes a group from the parser and calls the appropriate groupBuilders function
 * on it to produce a MathML node.
 */

var buildMathML_buildGroup = function buildGroup(group, options) {
  if (!group) {
    return new mathMLTree.MathNode("mrow");
  }

  if (_mathmlGroupBuilders[group.type]) {
    // Call the groupBuilders function
    var result = _mathmlGroupBuilders[group.type](group, options);
    return result;
  } else {
    throw new src_ParseError("Got group of unknown type: '" + group.type + "'");
  }
};
/**
 * Takes a full parse tree and settings and builds a MathML representation of
 * it. In particular, we put the elements from building the parse tree into a
 * <semantics> tag so we can also include that TeX source as an annotation.
 *
 * Note that we actually return a domTree element with a `<math>` inside it so
 * we can do appropriate styling.
 */

function buildMathML(tree, texExpression, options) {
  var expression = buildMathML_buildExpression(tree, options); // Wrap up the expression in an mrow so it is presented in the semantics
  // tag correctly, unless it's a single <mrow> or <mtable>.

  var wrapper;

  if (expression.length === 1 && expression[0] instanceof mathMLTree_MathNode && utils.contains(["mrow", "mtable"], expression[0].type)) {
    wrapper = expression[0];
  } else {
    wrapper = new mathMLTree.MathNode("mrow", expression);
  } // Build a TeX annotation of the source


  var annotation = new mathMLTree.MathNode("annotation", [new mathMLTree.TextNode(texExpression)]);
  annotation.setAttribute("encoding", "application/x-tex");
  var semantics = new mathMLTree.MathNode("semantics", [wrapper, annotation]);
  var math = new mathMLTree.MathNode("math", [semantics]); // You can't style <math> nodes, so we wrap the node in a span.
  // NOTE: The span class is not typed to have <math> nodes as children, and
  // we don't want to make the children type more generic since the children
  // of span are expected to have more fields in `buildHtml` contexts.
  // $FlowFixMe

  return buildCommon.makeSpan(["katex-mathml"], [math]);
}
// CONCATENATED MODULE: ./src/buildTree.js







var buildTree_optionsFromSettings = function optionsFromSettings(settings) {
  return new src_Options({
    style: settings.displayMode ? src_Style.DISPLAY : src_Style.TEXT,
    maxSize: settings.maxSize
  });
};

var buildTree_buildTree = function buildTree(tree, expression, settings) {
  var options = buildTree_optionsFromSettings(settings);
  var mathMLNode = buildMathML(tree, expression, options);
  var htmlNode = buildHTML(tree, options);
  var katexNode = buildCommon.makeSpan(["katex"], [mathMLNode, htmlNode]);

  if (settings.displayMode) {
    return buildCommon.makeSpan(["katex-display"], [katexNode]);
  } else {
    return katexNode;
  }
};
var buildTree_buildHTMLTree = function buildHTMLTree(tree, expression, settings) {
  var options = buildTree_optionsFromSettings(settings);
  var htmlNode = buildHTML(tree, options);
  var katexNode = buildCommon.makeSpan(["katex"], [htmlNode]);

  if (settings.displayMode) {
    return buildCommon.makeSpan(["katex-display"], [katexNode]);
  } else {
    return katexNode;
  }
};
/* harmony default export */ var stretchyCodePoint = {
  widehat: "^",
  widecheck: "ˇ",
  widetilde: "~",
  utilde: "~",
  overleftarrow: "\u2190",
  underleftarrow: "\u2190",
  xleftarrow: "\u2190",
  overrightarrow: "\u2192",
  underrightarrow: "\u2192",
  xrightarrow: "\u2192",
  underbrace: "\u23B5",
  overbrace: "\u23DE",
  overleftrightarrow: "\u2194",
  underleftrightarrow: "\u2194",
  xleftrightarrow: "\u2194",
  Overrightarrow: "\u21D2",
  xRightarrow: "\u21D2",
  overleftharpoon: "\u21BC",
  xleftharpoonup: "\u21BC",
  overrightharpoon: "\u21C0",
  xrightharpoonup: "\u21C0",
  xLeftarrow: "\u21D0",
  xLeftrightarrow: "\u21D4",
  xhookleftarrow: "\u21A9",
  xhookrightarrow: "\u21AA",
  xmapsto: "\u21A6",
  xrightharpoondown: "\u21C1",
  xleftharpoondown: "\u21BD",
  xrightleftharpoons: "\u21CC",
  xleftrightharpoons: "\u21CB",
  xtwoheadleftarrow: "\u219E",
  xtwoheadrightarrow: "\u21A0",
  xlongequal: "=",
  xtofrom: "\u21C4",
  xrightleftarrows: "\u21C4",
  xrightequilibrium: "\u21CC",
  // Not a perfect match.
  xleftequilibrium: "\u21CB" // None better available.

};

var stretchy_mathMLnode = function mathMLnode(label) {
  var node = new mathMLTree.MathNode("mo", [new mathMLTree.TextNode(stretchyCodePoint[label.substr(1)])]);
  node.setAttribute("stretchy", "true");
  return node;
}; // Many of the KaTeX SVG images have been adapted from glyphs in KaTeX fonts.
// Copyright (c) 2009-2010, Design Science, Inc. (<www.mathjax.org>)
// Copyright (c) 2014-2017 Khan Academy (<www.khanacademy.org>)
// Licensed under the SIL Open Font License, Version 1.1.
// See \nhttp://scripts.sil.org/OFL
// Very Long SVGs
//    Many of the KaTeX stretchy wide elements use a long SVG image and an
//    overflow: hidden tactic to achieve a stretchy image while avoiding
//    distortion of arrowheads or brace corners.
//    The SVG typically contains a very long (400 em) arrow.
//    The SVG is in a container span that has overflow: hidden, so the span
//    acts like a window that exposes only part of the  SVG.
//    The SVG always has a longer, thinner aspect ratio than the container span.
//    After the SVG fills 100% of the height of the container span,
//    there is a long arrow shaft left over. That left-over shaft is not shown.
//    Instead, it is sliced off because the span's CSS has overflow: hidden.
//    Thus, the reader sees an arrow that matches the subject matter width
//    without distortion.
//    Some functions, such as \cancel, need to vary their aspect ratio. These
//    functions do not get the overflow SVG treatment.
// Second Brush Stroke
//    Low resolution monitors struggle to display images in fine detail.
//    So browsers apply anti-aliasing. A long straight arrow shaft therefore
//    will sometimes appear as if it has a blurred edge.
//    To mitigate this, these SVG files contain a second "brush-stroke" on the
//    arrow shafts. That is, a second long thin rectangular SVG path has been
//    written directly on top of each arrow shaft. This reinforcement causes
//    some of the screen pixels to display as black instead of the anti-aliased
//    gray pixel that a  single path would generate. So we get arrow shafts
//    whose edges appear to be sharper.
// In the katexImagesData object just below, the dimensions all
// correspond to path geometry inside the relevant SVG.
// For example, \overrightarrow uses the same arrowhead as glyph U+2192
// from the KaTeX Main font. The scaling factor is 1000.
// That is, inside the font, that arrowhead is 522 units tall, which
// corresponds to 0.522 em inside the document.


var katexImagesData = {
  //   path(s), minWidth, height, align
  overrightarrow: [["rightarrow"], 0.888, 522, "xMaxYMin"],
  overleftarrow: [["leftarrow"], 0.888, 522, "xMinYMin"],
  underrightarrow: [["rightarrow"], 0.888, 522, "xMaxYMin"],
  underleftarrow: [["leftarrow"], 0.888, 522, "xMinYMin"],
  xrightarrow: [["rightarrow"], 1.469, 522, "xMaxYMin"],
  xleftarrow: [["leftarrow"], 1.469, 522, "xMinYMin"],
  Overrightarrow: [["doublerightarrow"], 0.888, 560, "xMaxYMin"],
  xRightarrow: [["doublerightarrow"], 1.526, 560, "xMaxYMin"],
  xLeftarrow: [["doubleleftarrow"], 1.526, 560, "xMinYMin"],
  overleftharpoon: [["leftharpoon"], 0.888, 522, "xMinYMin"],
  xleftharpoonup: [["leftharpoon"], 0.888, 522, "xMinYMin"],
  xleftharpoondown: [["leftharpoondown"], 0.888, 522, "xMinYMin"],
  overrightharpoon: [["rightharpoon"], 0.888, 522, "xMaxYMin"],
  xrightharpoonup: [["rightharpoon"], 0.888, 522, "xMaxYMin"],
  xrightharpoondown: [["rightharpoondown"], 0.888, 522, "xMaxYMin"],
  xlongequal: [["longequal"], 0.888, 334, "xMinYMin"],
  xtwoheadleftarrow: [["twoheadleftarrow"], 0.888, 334, "xMinYMin"],
  xtwoheadrightarrow: [["twoheadrightarrow"], 0.888, 334, "xMaxYMin"],
  overleftrightarrow: [["leftarrow", "rightarrow"], 0.888, 522],
  overbrace: [["leftbrace", "midbrace", "rightbrace"], 1.6, 548],
  underbrace: [["leftbraceunder", "midbraceunder", "rightbraceunder"], 1.6, 548],
  underleftrightarrow: [["leftarrow", "rightarrow"], 0.888, 522],
  xleftrightarrow: [["leftarrow", "rightarrow"], 1.75, 522],
  xLeftrightarrow: [["doubleleftarrow", "doublerightarrow"], 1.75, 560],
  xrightleftharpoons: [["leftharpoondownplus", "rightharpoonplus"], 1.75, 716],
  xleftrightharpoons: [["leftharpoonplus", "rightharpoondownplus"], 1.75, 716],
  xhookleftarrow: [["leftarrow", "righthook"], 1.08, 522],
  xhookrightarrow: [["lefthook", "rightarrow"], 1.08, 522],
  overlinesegment: [["leftlinesegment", "rightlinesegment"], 0.888, 522],
  underlinesegment: [["leftlinesegment", "rightlinesegment"], 0.888, 522],
  overgroup: [["leftgroup", "rightgroup"], 0.888, 342],
  undergroup: [["leftgroupunder", "rightgroupunder"], 0.888, 342],
  xmapsto: [["leftmapsto", "rightarrow"], 1.5, 522],
  xtofrom: [["leftToFrom", "rightToFrom"], 1.75, 528],
  // The next three arrows are from the mhchem package.
  // In mhchem.sty, min-length is 2.0em. But these arrows might appear in the
  // document as \xrightarrow or \xrightleftharpoons. Those have
  // min-length = 1.75em, so we set min-length on these next three to match.
  xrightleftarrows: [["baraboveleftarrow", "rightarrowabovebar"], 1.75, 901],
  xrightequilibrium: [["baraboveshortleftharpoon", "rightharpoonaboveshortbar"], 1.75, 716],
  xleftequilibrium: [["shortbaraboveleftharpoon", "shortrightharpoonabovebar"], 1.75, 716]
};

var groupLength = function groupLength(arg) {
  if (arg.type === "ordgroup") {
    return arg.body.length;
  } else {
    return 1;
  }
};

var stretchy_svgSpan = function svgSpan(group, options) {
  // Create a span with inline SVG for the element.
  function buildSvgSpan_() {
    var viewBoxWidth = 400000; // default

    var label = group.label.substr(1);

    if (utils.contains(["widehat", "widecheck", "widetilde", "utilde"], label)) {
      // Each type in the `if` statement corresponds to one of the ParseNode
      // types below. This narrowing is required to access `grp.base`.
      var grp = group; // There are four SVG images available for each function.
      // Choose a taller image when there are more characters.

      var numChars = groupLength(grp.base);
      var viewBoxHeight;
      var pathName;

      var _height;

      if (numChars > 5) {
        if (label === "widehat" || label === "widecheck") {
          viewBoxHeight = 420;
          viewBoxWidth = 2364;
          _height = 0.42;
          pathName = label + "4";
        } else {
          viewBoxHeight = 312;
          viewBoxWidth = 2340;
          _height = 0.34;
          pathName = "tilde4";
        }
      } else {
        var imgIndex = [1, 1, 2, 2, 3, 3][numChars];

        if (label === "widehat" || label === "widecheck") {
          viewBoxWidth = [0, 1062, 2364, 2364, 2364][imgIndex];
          viewBoxHeight = [0, 239, 300, 360, 420][imgIndex];
          _height = [0, 0.24, 0.3, 0.3, 0.36, 0.42][imgIndex];
          pathName = label + imgIndex;
        } else {
          viewBoxWidth = [0, 600, 1033, 2339, 2340][imgIndex];
          viewBoxHeight = [0, 260, 286, 306, 312][imgIndex];
          _height = [0, 0.26, 0.286, 0.3, 0.306, 0.34][imgIndex];
          pathName = "tilde" + imgIndex;
        }
      }

      var path = new domTree_PathNode(pathName);
      var svgNode = new SvgNode([path], {
        "width": "100%",
        "height": _height + "em",
        "viewBox": "0 0 " + viewBoxWidth + " " + viewBoxHeight,
        "preserveAspectRatio": "none"
      });
      return {
        span: buildCommon.makeSvgSpan([], [svgNode], options),
        minWidth: 0,
        height: _height
      };
    } else {
      var spans = [];
      var data = katexImagesData[label];
      var paths = data[0],
          _minWidth = data[1],
          _viewBoxHeight = data[2];

      var _height2 = _viewBoxHeight / 1000;

      var numSvgChildren = paths.length;
      var widthClasses;
      var aligns;

      if (numSvgChildren === 1) {
        // $FlowFixMe: All these cases must be of the 4-tuple type.
        var align1 = data[3];
        widthClasses = ["hide-tail"];
        aligns = [align1];
      } else if (numSvgChildren === 2) {
        widthClasses = ["halfarrow-left", "halfarrow-right"];
        aligns = ["xMinYMin", "xMaxYMin"];
      } else if (numSvgChildren === 3) {
        widthClasses = ["brace-left", "brace-center", "brace-right"];
        aligns = ["xMinYMin", "xMidYMin", "xMaxYMin"];
      } else {
        throw new Error("Correct katexImagesData or update code here to support\n                    " + numSvgChildren + " children.");
      }

      for (var i = 0; i < numSvgChildren; i++) {
        var _path = new domTree_PathNode(paths[i]);

        var _svgNode = new SvgNode([_path], {
          "width": "400em",
          "height": _height2 + "em",
          "viewBox": "0 0 " + viewBoxWidth + " " + _viewBoxHeight,
          "preserveAspectRatio": aligns[i] + " slice"
        });

        var _span = buildCommon.makeSvgSpan([widthClasses[i]], [_svgNode], options);

        if (numSvgChildren === 1) {
          return {
            span: _span,
            minWidth: _minWidth,
            height: _height2
          };
        } else {
          _span.style.height = _height2 + "em";
          spans.push(_span);
        }
      }

      return {
        span: buildCommon.makeSpan(["stretchy"], spans, options),
        minWidth: _minWidth,
        height: _height2
      };
    }
  } // buildSvgSpan_()


  var _buildSvgSpan_ = buildSvgSpan_(),
      span = _buildSvgSpan_.span,
      minWidth = _buildSvgSpan_.minWidth,
      height = _buildSvgSpan_.height; // Note that we are returning span.depth = 0.
  // Any adjustments relative to the baseline must be done in buildHTML.


  span.height = height;
  span.style.height = height + "em";

  if (minWidth > 0) {
    span.style.minWidth = minWidth + "em";
  }

  return span;
};

var stretchy_encloseSpan = function encloseSpan(inner, label, pad, options) {
  // Return an image span for \cancel, \bcancel, \xcancel, or \fbox
  var img;
  var totalHeight = inner.height + inner.depth + 2 * pad;

  if (/fbox|color/.test(label)) {
    img = buildCommon.makeSpan(["stretchy", label], [], options);

    if (label === "fbox") {
      var color = options.color && options.getColor();

      if (color) {
        img.style.borderColor = color;
      }
    }
  } else {
    // \cancel, \bcancel, or \xcancel
    // Since \cancel's SVG is inline and it omits the viewBox attribute,
    // its stroke-width will not vary with span area.
    var lines = [];

    if (/^[bx]cancel$/.test(label)) {
      lines.push(new LineNode({
        "x1": "0",
        "y1": "0",
        "x2": "100%",
        "y2": "100%",
        "stroke-width": "0.046em"
      }));
    }

    if (/^x?cancel$/.test(label)) {
      lines.push(new LineNode({
        "x1": "0",
        "y1": "100%",
        "x2": "100%",
        "y2": "0",
        "stroke-width": "0.046em"
      }));
    }

    var svgNode = new SvgNode(lines, {
      "width": "100%",
      "height": totalHeight + "em"
    });
    img = buildCommon.makeSvgSpan([], [svgNode], options);
  }

  img.height = totalHeight;
  img.style.height = totalHeight + "em";
  return img;
};

/* harmony default export */ var stretchy = ({
  encloseSpan: stretchy_encloseSpan,
  mathMLnode: stretchy_mathMLnode,
  svgSpan: stretchy_svgSpan
});
// CONCATENATED MODULE: ./src/functions/accent.js









// NOTE: Unlike most `htmlBuilder`s, this one handles not only "accent", but
var accent_htmlBuilder = function htmlBuilder(grp, options) {
  // Accents are handled in the TeXbook pg. 443, rule 12.
  var base;
  var group;
  var supSub = checkNodeType(grp, "supsub");
  var supSubGroup;

  if (supSub) {
    // If our base is a character box, and we have superscripts and
    // subscripts, the supsub will defer to us. In particular, we want
    // to attach the superscripts and subscripts to the inner body (so
    // that the position of the superscripts and subscripts won't be
    // affected by the height of the accent). We accomplish this by
    // sticking the base of the accent into the base of the supsub, and
    // rendering that, while keeping track of where the accent is.
    // The real accent group is the base of the supsub group
    group = assertNodeType(supSub.base, "accent"); // The character box is the base of the accent group

    base = group.base; // Stick the character box into the base of the supsub group

    supSub.base = base; // Rerender the supsub group with its new base, and store that
    // result.

    supSubGroup = assertSpan(buildHTML_buildGroup(supSub, options)); // reset original base

    supSub.base = group;
  } else {
    group = assertNodeType(grp, "accent");
    base = group.base;
  } // Build the base group


  var body = buildHTML_buildGroup(base, options.havingCrampedStyle()); // Does the accent need to shift for the skew of a character?

  var mustShift = group.isShifty && utils.isCharacterBox(base); // Calculate the skew of the accent. This is based on the line "If the
  // nucleus is not a single character, let s = 0; otherwise set s to the
  // kern amount for the nucleus followed by the \skewchar of its font."
  // Note that our skew metrics are just the kern between each character
  // and the skewchar.

  var skew = 0;

  if (mustShift) {
    // If the base is a character box, then we want the skew of the
    // innermost character. To do that, we find the innermost character:
    var baseChar = utils.getBaseElem(base); // Then, we render its group to get the symbol inside it

    var baseGroup = buildHTML_buildGroup(baseChar, options.havingCrampedStyle()); // Finally, we pull the skew off of the symbol.

    skew = assertSymbolDomNode(baseGroup).skew; // Note that we now throw away baseGroup, because the layers we
    // removed with getBaseElem might contain things like \color which
    // we can't get rid of.
    // TODO(emily): Find a better way to get the skew
  } // calculate the amount of space between the body and the accent


  var clearance = Math.min(body.height, options.fontMetrics().xHeight); // Build the accent

  var accentBody;

  if (!group.isStretchy) {
    var accent;
    var width;

    if (group.label === "\\vec") {
      // Before version 0.9, \vec used the combining font glyph U+20D7.
      // But browsers, especially Safari, are not consistent in how they
      // render combining characters when not preceded by a character.
      // So now we use an SVG.
      // If Safari reforms, we should consider reverting to the glyph.
      accent = buildCommon.staticSvg("vec", options);
      width = buildCommon.svgData.vec[1];
    } else {
      accent = buildCommon.makeSymbol(group.label, "Main-Regular", group.mode, options); // Remove the italic correction of the accent, because it only serves to
      // shift the accent over to a place we don't want.

      accent.italic = 0;
      width = accent.width;
    }

    accentBody = buildCommon.makeSpan(["accent-body"], [accent]); // "Full" accents expand the width of the resulting symbol to be
    // at least the width of the accent, and overlap directly onto the
    // character without any vertical offset.

    var accentFull = group.label === "\\textcircled";

    if (accentFull) {
      accentBody.classes.push('accent-full');
      clearance = body.height;
    } // Shift the accent over by the skew.


    var left = skew; // CSS defines `.katex .accent .accent-body:not(.accent-full) { width: 0 }`
    // so that the accent doesn't contribute to the bounding box.
    // We need to shift the character by its width (effectively half
    // its width) to compensate.

    if (!accentFull) {
      left -= width / 2;
    }

    accentBody.style.left = left + "em"; // \textcircled uses the \bigcirc glyph, so it needs some
    // vertical adjustment to match LaTeX.

    if (group.label === "\\textcircled") {
      accentBody.style.top = ".2em";
    }

    accentBody = buildCommon.makeVList({
      positionType: "firstBaseline",
      children: [{
        type: "elem",
        elem: body
      }, {
        type: "kern",
        size: -clearance
      }, {
        type: "elem",
        elem: accentBody
      }]
    }, options);
  } else {
    accentBody = stretchy.svgSpan(group, options);
    accentBody = buildCommon.makeVList({
      positionType: "firstBaseline",
      children: [{
        type: "elem",
        elem: body
      }, {
        type: "elem",
        elem: accentBody,
        wrapperClasses: ["svg-align"],
        wrapperStyle: skew > 0 ? {
          width: "calc(100% - " + 2 * skew + "em)",
          marginLeft: 2 * skew + "em"
        } : undefined
      }]
    }, options);
  }

  var accentWrap = buildCommon.makeSpan(["mord", "accent"], [accentBody], options);

  if (supSubGroup) {
    // Here, we replace the "base" child of the supsub with our newly
    // generated accent.
    supSubGroup.children[0] = accentWrap; // Since we don't rerun the height calculation after replacing the
    // accent, we manually recalculate height.

    supSubGroup.height = Math.max(accentWrap.height, supSubGroup.height); // Accents should always be ords, even when their innards are not.

    supSubGroup.classes[0] = "mord";
    return supSubGroup;
  } else {
    return accentWrap;
  }
};

var accent_mathmlBuilder = function mathmlBuilder(group, options) {
  var accentNode = group.isStretchy ? stretchy.mathMLnode(group.label) : new mathMLTree.MathNode("mo", [buildMathML_makeText(group.label, group.mode)]);
  var node = new mathMLTree.MathNode("mover", [buildMathML_buildGroup(group.base, options), accentNode]);
  node.setAttribute("accent", "true");
  return node;
};

var NON_STRETCHY_ACCENT_REGEX = new RegExp(["\\acute", "\\grave", "\\ddot", "\\tilde", "\\bar", "\\breve", "\\check", "\\hat", "\\vec", "\\dot", "\\mathring"].map(function (accent) {
  return "\\" + accent;
}).join("|")); // Accents

defineFunction({
  type: "accent",
  names: ["\\acute", "\\grave", "\\ddot", "\\tilde", "\\bar", "\\breve", "\\check", "\\hat", "\\vec", "\\dot", "\\mathring", "\\widecheck", "\\widehat", "\\widetilde", "\\overrightarrow", "\\overleftarrow", "\\Overrightarrow", "\\overleftrightarrow", "\\overgroup", "\\overlinesegment", "\\overleftharpoon", "\\overrightharpoon"],
  props: {
    numArgs: 1
  },
  handler: function handler(context, args) {
    var base = args[0];
    var isStretchy = !NON_STRETCHY_ACCENT_REGEX.test(context.funcName);
    var isShifty = !isStretchy || context.funcName === "\\widehat" || context.funcName === "\\widetilde" || context.funcName === "\\widecheck";
    return {
      type: "accent",
      mode: context.parser.mode,
      label: context.funcName,
      isStretchy: isStretchy,
      isShifty: isShifty,
      base: base
    };
  },
  htmlBuilder: accent_htmlBuilder,
  mathmlBuilder: accent_mathmlBuilder
}); // Text-mode accents

defineFunction({
  type: "accent",
  names: ["\\'", "\\`", "\\^", "\\~", "\\=", "\\u", "\\.", '\\"', "\\r", "\\H", "\\v", "\\textcircled"],
  props: {
    numArgs: 1,
    allowedInText: true,
    allowedInMath: false
  },
  handler: function handler(context, args) {
    var base = args[0];
    return {
      type: "accent",
      mode: context.parser.mode,
      label: context.funcName,
      isStretchy: false,
      isShifty: true,
      base: base
    };
  },
  htmlBuilder: accent_htmlBuilder,
  mathmlBuilder: accent_mathmlBuilder
});
// CONCATENATED MODULE: ./src/functions/accentunder.js
// Horizontal overlap functions






defineFunction({
  type: "accentUnder",
  names: ["\\underleftarrow", "\\underrightarrow", "\\underleftrightarrow", "\\undergroup", "\\underlinesegment", "\\utilde"],
  props: {
    numArgs: 1
  },
  handler: function handler(_ref, args) {
    var parser = _ref.parser,
        funcName = _ref.funcName;
    var base = args[0];
    return {
      type: "accentUnder",
      mode: parser.mode,
      label: funcName,
      base: base
    };
  },
  htmlBuilder: function htmlBuilder(group, options) {
    // Treat under accents much like underlines.
    var innerGroup = buildHTML_buildGroup(group.base, options);
    var accentBody = stretchy.svgSpan(group, options);
    var kern = group.label === "\\utilde" ? 0.12 : 0; // Generate the vlist, with the appropriate kerns

    var vlist = buildCommon.makeVList({
      positionType: "bottom",
      positionData: accentBody.height + kern,
      children: [{
        type: "elem",
        elem: accentBody,
        wrapperClasses: ["svg-align"]
      }, {
        type: "kern",
        size: kern
      }, {
        type: "elem",
        elem: innerGroup
      }]
    }, options);
    return buildCommon.makeSpan(["mord", "accentunder"], [vlist], options);
  },
  mathmlBuilder: function mathmlBuilder(group, options) {
    var accentNode = stretchy.mathMLnode(group.label);
    var node = new mathMLTree.MathNode("munder", [buildMathML_buildGroup(group.base, options), accentNode]);
    node.setAttribute("accentunder", "true");
    return node;
  }
});
// CONCATENATED MODULE: ./src/functions/arrow.js






// Stretchy arrows with an optional argument
defineFunction({
  type: "xArrow",
  names: ["\\xleftarrow", "\\xrightarrow", "\\xLeftarrow", "\\xRightarrow", "\\xleftrightarrow", "\\xLeftrightarrow", "\\xhookleftarrow", "\\xhookrightarrow", "\\xmapsto", "\\xrightharpoondown", "\\xrightharpoonup", "\\xleftharpoondown", "\\xleftharpoonup", "\\xrightleftharpoons", "\\xleftrightharpoons", "\\xlongequal", "\\xtwoheadrightarrow", "\\xtwoheadleftarrow", "\\xtofrom", // The next 3 functions are here to support the mhchem extension.
  // Direct use of these functions is discouraged and may break someday.
  "\\xrightleftarrows", "\\xrightequilibrium", "\\xleftequilibrium"],
  props: {
    numArgs: 1,
    numOptionalArgs: 1
  },
  handler: function handler(_ref, args, optArgs) {
    var parser = _ref.parser,
        funcName = _ref.funcName;
    return {
      type: "xArrow",
      mode: parser.mode,
      label: funcName,
      body: args[0],
      below: optArgs[0]
    };
  },
  // Flow is unable to correctly infer the type of `group`, even though it's
  // unamibiguously determined from the passed-in `type` above.
  htmlBuilder: function htmlBuilder(group, options) {
    var style = options.style; // Build the argument groups in the appropriate style.
    // Ref: amsmath.dtx:   \hbox{$\scriptstyle\mkern#3mu{#6}\mkern#4mu$}%
    // Some groups can return document fragments.  Handle those by wrapping
    // them in a span.

    var newOptions = options.havingStyle(style.sup());
    var upperGroup = buildCommon.wrapFragment(buildHTML_buildGroup(group.body, newOptions, options), options);
    upperGroup.classes.push("x-arrow-pad");
    var lowerGroup;

    if (group.below) {
      // Build the lower group
      newOptions = options.havingStyle(style.sub());
      lowerGroup = buildCommon.wrapFragment(buildHTML_buildGroup(group.below, newOptions, options), options);
      lowerGroup.classes.push("x-arrow-pad");
    }

    var arrowBody = stretchy.svgSpan(group, options); // Re shift: Note that stretchy.svgSpan returned arrowBody.depth = 0.
    // The point we want on the math axis is at 0.5 * arrowBody.height.

    var arrowShift = -options.fontMetrics().axisHeight + 0.5 * arrowBody.height; // 2 mu kern. Ref: amsmath.dtx: #7\if0#2\else\mkern#2mu\fi

    var upperShift = -options.fontMetrics().axisHeight - 0.5 * arrowBody.height - 0.111; // 0.111 em = 2 mu

    if (upperGroup.depth > 0.25 || group.label === "\\xleftequilibrium") {
      upperShift -= upperGroup.depth; // shift up if depth encroaches
    } // Generate the vlist


    var vlist;

    if (lowerGroup) {
      var lowerShift = -options.fontMetrics().axisHeight + lowerGroup.height + 0.5 * arrowBody.height + 0.111;
      vlist = buildCommon.makeVList({
        positionType: "individualShift",
        children: [{
          type: "elem",
          elem: upperGroup,
          shift: upperShift
        }, {
          type: "elem",
          elem: arrowBody,
          shift: arrowShift
        }, {
          type: "elem",
          elem: lowerGroup,
          shift: lowerShift
        }]
      }, options);
    } else {
      vlist = buildCommon.makeVList({
        positionType: "individualShift",
        children: [{
          type: "elem",
          elem: upperGroup,
          shift: upperShift
        }, {
          type: "elem",
          elem: arrowBody,
          shift: arrowShift
        }]
      }, options);
    } // $FlowFixMe: Replace this with passing "svg-align" into makeVList.


    vlist.children[0].children[0].children[1].classes.push("svg-align");
    return buildCommon.makeSpan(["mrel", "x-arrow"], [vlist], options);
  },
  mathmlBuilder: function mathmlBuilder(group, options) {
    var arrowNode = stretchy.mathMLnode(group.label);
    var node;
    var lowerNode;

    if (group.body) {
      var upperNode = buildMathML_buildGroup(group.body, options);

      if (group.below) {
        lowerNode = buildMathML_buildGroup(group.below, options);
        node = new mathMLTree.MathNode("munderover", [arrowNode, lowerNode, upperNode]);
      } else {
        node = new mathMLTree.MathNode("mover", [arrowNode, upperNode]);
      }
    } else if (group.below) {
      lowerNode = buildMathML_buildGroup(group.below, options);
      node = new mathMLTree.MathNode("munder", [arrowNode, lowerNode]);
    } else {
      node = new mathMLTree.MathNode("mover", [arrowNode]);
    }

    return node;
  }
});
// CONCATENATED MODULE: ./src/functions/char.js


 // \@char is an internal function that takes a grouped decimal argument like
// {123} and converts into symbol with code 123.  It is used by the *macro*
// \char defined in macros.js.

defineFunction({
  type: "textord",
  names: ["\\@char"],
  props: {
    numArgs: 1,
    allowedInText: true
  },
  handler: function handler(_ref, args) {
    var parser = _ref.parser;
    var arg = assertNodeType(args[0], "ordgroup");
    var group = arg.body;
    var number = "";

    for (var i = 0; i < group.length; i++) {
      var node = assertNodeType(group[i], "textord");
      number += node.text;
    }

    var code = parseInt(number);

    if (isNaN(code)) {
      throw new src_ParseError("\\@char has non-numeric argument " + number);
    }

    return {
      type: "textord",
      mode: parser.mode,
      text: String.fromCharCode(code)
    };
  }
});
// CONCATENATED MODULE: ./src/functions/color.js







var color_htmlBuilder = function htmlBuilder(group, options) {
  var elements = buildHTML_buildExpression(group.body, options.withColor(group.color), false); // \color isn't supposed to affect the type of the elements it contains.
  // To accomplish this, we wrap the results in a fragment, so the inner
  // elements will be able to directly interact with their neighbors. For
  // example, `\color{red}{2 +} 3` has the same spacing as `2 + 3`

  return buildCommon.makeFragment(elements);
};

var color_mathmlBuilder = function mathmlBuilder(group, options) {
  var inner = buildMathML_buildExpression(group.body, options);
  var node = new mathMLTree.MathNode("mstyle", inner);
  node.setAttribute("mathcolor", group.color);
  return node;
};

defineFunction({
  type: "color",
  names: ["\\textcolor"],
  props: {
    numArgs: 2,
    allowedInText: true,
    greediness: 3,
    argTypes: ["color", "original"]
  },
  handler: function handler(_ref, args) {
    var parser = _ref.parser;
    var color = assertNodeType(args[0], "color-token").color;
    var body = args[1];
    return {
      type: "color",
      mode: parser.mode,
      color: color,
      body: defineFunction_ordargument(body)
    };
  },
  htmlBuilder: color_htmlBuilder,
  mathmlBuilder: color_mathmlBuilder
}); // TODO(kevinb): define these using macros

defineFunction({
  type: "color",
  names: ["\\blue", "\\orange", "\\pink", "\\red", "\\green", "\\gray", "\\purple", "\\blueA", "\\blueB", "\\blueC", "\\blueD", "\\blueE", "\\tealA", "\\tealB", "\\tealC", "\\tealD", "\\tealE", "\\greenA", "\\greenB", "\\greenC", "\\greenD", "\\greenE", "\\goldA", "\\goldB", "\\goldC", "\\goldD", "\\goldE", "\\redA", "\\redB", "\\redC", "\\redD", "\\redE", "\\maroonA", "\\maroonB", "\\maroonC", "\\maroonD", "\\maroonE", "\\purpleA", "\\purpleB", "\\purpleC", "\\purpleD", "\\purpleE", "\\mintA", "\\mintB", "\\mintC", "\\grayA", "\\grayB", "\\grayC", "\\grayD", "\\grayE", "\\grayF", "\\grayG", "\\grayH", "\\grayI", "\\kaBlue", "\\kaGreen"],
  props: {
    numArgs: 1,
    allowedInText: true,
    greediness: 3
  },
  handler: function handler(_ref2, args) {
    var parser = _ref2.parser,
        funcName = _ref2.funcName;
    var body = args[0];
    return {
      type: "color",
      mode: parser.mode,
      color: "katex-" + funcName.slice(1),
      body: defineFunction_ordargument(body)
    };
  },
  htmlBuilder: color_htmlBuilder,
  mathmlBuilder: color_mathmlBuilder
});
defineFunction({
  type: "color",
  names: ["\\color"],
  props: {
    numArgs: 1,
    allowedInText: true,
    greediness: 3,
    argTypes: ["color"]
  },
  handler: function handler(_ref3, args) {
    var parser = _ref3.parser,
        breakOnTokenText = _ref3.breakOnTokenText;
    var color = assertNodeType(args[0], "color-token").color; // If we see a styling function, parse out the implicit body

    var body = parser.parseExpression(true, breakOnTokenText);
    return {
      type: "color",
      mode: parser.mode,
      color: color,
      body: body
    };
  },
  htmlBuilder: color_htmlBuilder,
  mathmlBuilder: color_mathmlBuilder
});
// CONCATENATED MODULE: ./src/functions/cr.js
// Row breaks within tabular environments, and line breaks at top level





 // \\ is a macro mapping to either \cr or \newline.  Because they have the
// same signature, we implement them as one megafunction, with newRow
// indicating whether we're in the \cr case, and newLine indicating whether
// to break the line in the \newline case.

defineFunction({
  type: "cr",
  names: ["\\cr", "\\newline"],
  props: {
    numArgs: 0,
    numOptionalArgs: 1,
    argTypes: ["size"],
    allowedInText: true
  },
  handler: function handler(_ref, args, optArgs) {
    var parser = _ref.parser,
        funcName = _ref.funcName;
    var size = optArgs[0];
    var newRow = funcName === "\\cr";
    var newLine = false;

    if (!newRow) {
      if (parser.settings.displayMode && parser.settings.useStrictBehavior("newLineInDisplayMode", "In LaTeX, \\\\ or \\newline " + "does nothing in display mode")) {
        newLine = false;
      } else {
        newLine = true;
      }
    }

    return {
      type: "cr",
      mode: parser.mode,
      newLine: newLine,
      newRow: newRow,
      size: size && assertNodeType(size, "size").value
    };
  },
  // The following builders are called only at the top level,
  // not within tabular/array environments.
  htmlBuilder: function htmlBuilder(group, options) {
    if (group.newRow) {
      throw new src_ParseError("\\cr valid only within a tabular/array environment");
    }

    var span = buildCommon.makeSpan(["mspace"], [], options);

    if (group.newLine) {
      span.classes.push("newline");

      if (group.size) {
        span.style.marginTop = units_calculateSize(group.size, options) + "em";
      }
    }

    return span;
  },
  mathmlBuilder: function mathmlBuilder(group, options) {
    var node = new mathMLTree.MathNode("mspace");

    if (group.newLine) {
      node.setAttribute("linebreak", "newline");

      if (group.size) {
        node.setAttribute("height", units_calculateSize(group.size, options) + "em");
      }
    }

    return node;
  }
});
// CONCATENATED MODULE: ./src/delimiter.js
/**
 * This file deals with creating delimiters of various sizes. The TeXbook
 * discusses these routines on page 441-442, in the "Another subroutine sets box
 * x to a specified variable delimiter" paragraph.
 *
 * There are three main routines here. `makeSmallDelim` makes a delimiter in the
 * normal font, but in either text, script, or scriptscript style.
 * `makeLargeDelim` makes a delimiter in textstyle, but in one of the Size1,
 * Size2, Size3, or Size4 fonts. `makeStackedDelim` makes a delimiter out of
 * smaller pieces that are stacked on top of one another.
 *
 * The functions take a parameter `center`, which determines if the delimiter
 * should be centered around the axis.
 *
 * Then, there are three exposed functions. `sizedDelim` makes a delimiter in
 * one of the given sizes. This is used for things like `\bigl`.
 * `customSizedDelim` makes a delimiter with a given total height+depth. It is
 * called in places like `\sqrt`. `leftRightDelim` makes an appropriate
 * delimiter which surrounds an expression of a given height an depth. It is
 * used in `\left` and `\right`.
 */








/**
 * Get the metrics for a given symbol and font, after transformation (i.e.
 * after following replacement from symbols.js)
 */
var delimiter_getMetrics = function getMetrics(symbol, font, mode) {
  var replace = src_symbols.math[symbol] && src_symbols.math[symbol].replace;
  var metrics = getCharacterMetrics(replace || symbol, font, mode);

  if (!metrics) {
    throw new Error("Unsupported symbol " + symbol + " and font size " + font + ".");
  }

  return metrics;
};
/**
 * Puts a delimiter span in a given style, and adds appropriate height, depth,
 * and maxFontSizes.
 */


var delimiter_styleWrap = function styleWrap(delim, toStyle, options, classes) {
  var newOptions = options.havingBaseStyle(toStyle);
  var span = buildCommon.makeSpan(classes.concat(newOptions.sizingClasses(options)), [delim], options);
  var delimSizeMultiplier = newOptions.sizeMultiplier / options.sizeMultiplier;
  span.height *= delimSizeMultiplier;
  span.depth *= delimSizeMultiplier;
  span.maxFontSize = newOptions.sizeMultiplier;
  return span;
};

var centerSpan = function centerSpan(span, options, style) {
  var newOptions = options.havingBaseStyle(style);
  var shift = (1 - options.sizeMultiplier / newOptions.sizeMultiplier) * options.fontMetrics().axisHeight;
  span.classes.push("delimcenter");
  span.style.top = shift + "em";
  span.height -= shift;
  span.depth += shift;
};
/**
 * Makes a small delimiter. This is a delimiter that comes in the Main-Regular
 * font, but is restyled to either be in textstyle, scriptstyle, or
 * scriptscriptstyle.
 */


var delimiter_makeSmallDelim = function makeSmallDelim(delim, style, center, options, mode, classes) {
  var text = buildCommon.makeSymbol(delim, "Main-Regular", mode, options);
  var span = delimiter_styleWrap(text, style, options, classes);

  if (center) {
    centerSpan(span, options, style);
  }

  return span;
};
/**
 * Builds a symbol in the given font size (note size is an integer)
 */


var delimiter_mathrmSize = function mathrmSize(value, size, mode, options) {
  return buildCommon.makeSymbol(value, "Size" + size + "-Regular", mode, options);
};
/**
 * Makes a large delimiter. This is a delimiter that comes in the Size1, Size2,
 * Size3, or Size4 fonts. It is always rendered in textstyle.
 */


var delimiter_makeLargeDelim = function makeLargeDelim(delim, size, center, options, mode, classes) {
  var inner = delimiter_mathrmSize(delim, size, mode, options);
  var span = delimiter_styleWrap(buildCommon.makeSpan(["delimsizing", "size" + size], [inner], options), src_Style.TEXT, options, classes);

  if (center) {
    centerSpan(span, options, src_Style.TEXT);
  }

  return span;
};
/**
 * Make an inner span with the given offset and in the given font. This is used
 * in `makeStackedDelim` to make the stacking pieces for the delimiter.
 */


var delimiter_makeInner = function makeInner(symbol, font, mode) {
  var sizeClass; // Apply the correct CSS class to choose the right font.

  if (font === "Size1-Regular") {
    sizeClass = "delim-size1";
  } else
    /* if (font === "Size4-Regular") */
    {
      sizeClass = "delim-size4";
    }

  var inner = buildCommon.makeSpan(["delimsizinginner", sizeClass], [buildCommon.makeSpan([], [buildCommon.makeSymbol(symbol, font, mode)])]); // Since this will be passed into `makeVList` in the end, wrap the element
  // in the appropriate tag that VList uses.

  return {
    type: "elem",
    elem: inner
  };
};
/**
 * Make a stacked delimiter out of a given delimiter, with the total height at
 * least `heightTotal`. This routine is mentioned on page 442 of the TeXbook.
 */


var delimiter_makeStackedDelim = function makeStackedDelim(delim, heightTotal, center, options, mode, classes) {
  // There are four parts, the top, an optional middle, a repeated part, and a
  // bottom.
  var top;
  var middle;
  var repeat;
  var bottom;
  top = repeat = bottom = delim;
  middle = null; // Also keep track of what font the delimiters are in

  var font = "Size1-Regular"; // We set the parts and font based on the symbol. Note that we use
  // '\u23d0' instead of '|' and '\u2016' instead of '\\|' for the
  // repeats of the arrows

  if (delim === "\\uparrow") {
    repeat = bottom = "\u23D0";
  } else if (delim === "\\Uparrow") {
    repeat = bottom = "\u2016";
  } else if (delim === "\\downarrow") {
    top = repeat = "\u23D0";
  } else if (delim === "\\Downarrow") {
    top = repeat = "\u2016";
  } else if (delim === "\\updownarrow") {
    top = "\\uparrow";
    repeat = "\u23D0";
    bottom = "\\downarrow";
  } else if (delim === "\\Updownarrow") {
    top = "\\Uparrow";
    repeat = "\u2016";
    bottom = "\\Downarrow";
  } else if (delim === "[" || delim === "\\lbrack") {
    top = "\u23A1";
    repeat = "\u23A2";
    bottom = "\u23A3";
    font = "Size4-Regular";
  } else if (delim === "]" || delim === "\\rbrack") {
    top = "\u23A4";
    repeat = "\u23A5";
    bottom = "\u23A6";
    font = "Size4-Regular";
  } else if (delim === "\\lfloor" || delim === "\u230A") {
    repeat = top = "\u23A2";
    bottom = "\u23A3";
    font = "Size4-Regular";
  } else if (delim === "\\lceil" || delim === "\u2308") {
    top = "\u23A1";
    repeat = bottom = "\u23A2";
    font = "Size4-Regular";
  } else if (delim === "\\rfloor" || delim === "\u230B") {
    repeat = top = "\u23A5";
    bottom = "\u23A6";
    font = "Size4-Regular";
  } else if (delim === "\\rceil" || delim === "\u2309") {
    top = "\u23A4";
    repeat = bottom = "\u23A5";
    font = "Size4-Regular";
  } else if (delim === "(" || delim === "\\lparen") {
    top = "\u239B";
    repeat = "\u239C";
    bottom = "\u239D";
    font = "Size4-Regular";
  } else if (delim === ")" || delim === "\\rparen") {
    top = "\u239E";
    repeat = "\u239F";
    bottom = "\u23A0";
    font = "Size4-Regular";
  } else if (delim === "\\{" || delim === "\\lbrace") {
    top = "\u23A7";
    middle = "\u23A8";
    bottom = "\u23A9";
    repeat = "\u23AA";
    font = "Size4-Regular";
  } else if (delim === "\\}" || delim === "\\rbrace") {
    top = "\u23AB";
    middle = "\u23AC";
    bottom = "\u23AD";
    repeat = "\u23AA";
    font = "Size4-Regular";
  } else if (delim === "\\lgroup" || delim === "\u27EE") {
    top = "\u23A7";
    bottom = "\u23A9";
    repeat = "\u23AA";
    font = "Size4-Regular";
  } else if (delim === "\\rgroup" || delim === "\u27EF") {
    top = "\u23AB";
    bottom = "\u23AD";
    repeat = "\u23AA";
    font = "Size4-Regular";
  } else if (delim === "\\lmoustache" || delim === "\u23B0") {
    top = "\u23A7";
    bottom = "\u23AD";
    repeat = "\u23AA";
    font = "Size4-Regular";
  } else if (delim === "\\rmoustache" || delim === "\u23B1") {
    top = "\u23AB";
    bottom = "\u23A9";
    repeat = "\u23AA";
    font = "Size4-Regular";
  } // Get the metrics of the four sections


  var topMetrics = delimiter_getMetrics(top, font, mode);
  var topHeightTotal = topMetrics.height + topMetrics.depth;
  var repeatMetrics = delimiter_getMetrics(repeat, font, mode);
  var repeatHeightTotal = repeatMetrics.height + repeatMetrics.depth;
  var bottomMetrics = delimiter_getMetrics(bottom, font, mode);
  var bottomHeightTotal = bottomMetrics.height + bottomMetrics.depth;
  var middleHeightTotal = 0;
  var middleFactor = 1;

  if (middle !== null) {
    var middleMetrics = delimiter_getMetrics(middle, font, mode);
    middleHeightTotal = middleMetrics.height + middleMetrics.depth;
    middleFactor = 2; // repeat symmetrically above and below middle
  } // Calcuate the minimal height that the delimiter can have.
  // It is at least the size of the top, bottom, and optional middle combined.


  var minHeight = topHeightTotal + bottomHeightTotal + middleHeightTotal; // Compute the number of copies of the repeat symbol we will need

  var repeatCount = Math.ceil((heightTotal - minHeight) / (middleFactor * repeatHeightTotal)); // Compute the total height of the delimiter including all the symbols

  var realHeightTotal = minHeight + repeatCount * middleFactor * repeatHeightTotal; // The center of the delimiter is placed at the center of the axis. Note
  // that in this context, "center" means that the delimiter should be
  // centered around the axis in the current style, while normally it is
  // centered around the axis in textstyle.

  var axisHeight = options.fontMetrics().axisHeight;

  if (center) {
    axisHeight *= options.sizeMultiplier;
  } // Calculate the depth


  var depth = realHeightTotal / 2 - axisHeight; // Now, we start building the pieces that will go into the vlist
  // Keep a list of the inner pieces

  var inners = []; // Add the bottom symbol

  inners.push(delimiter_makeInner(bottom, font, mode));

  if (middle === null) {
    // Add that many symbols
    for (var i = 0; i < repeatCount; i++) {
      inners.push(delimiter_makeInner(repeat, font, mode));
    }
  } else {
    // When there is a middle bit, we need the middle part and two repeated
    // sections
    for (var _i = 0; _i < repeatCount; _i++) {
      inners.push(delimiter_makeInner(repeat, font, mode));
    }

    inners.push(delimiter_makeInner(middle, font, mode));

    for (var _i2 = 0; _i2 < repeatCount; _i2++) {
      inners.push(delimiter_makeInner(repeat, font, mode));
    }
  } // Add the top symbol


  inners.push(delimiter_makeInner(top, font, mode)); // Finally, build the vlist

  var newOptions = options.havingBaseStyle(src_Style.TEXT);
  var inner = buildCommon.makeVList({
    positionType: "bottom",
    positionData: depth,
    children: inners
  }, newOptions);
  return delimiter_styleWrap(buildCommon.makeSpan(["delimsizing", "mult"], [inner], newOptions), src_Style.TEXT, options, classes);
}; // All surds have 0.08em padding above the viniculum inside the SVG.
// That keeps browser span height rounding error from pinching the line.


var vbPad = 80; // padding above the surd, measured inside the viewBox.

var emPad = 0.08; // padding, in ems, measured in the document.

var delimiter_sqrtSvg = function sqrtSvg(sqrtName, height, viewBoxHeight, options) {
  var alternate;

  if (sqrtName === "sqrtTall") {
    // sqrtTall is from glyph U23B7 in the font KaTeX_Size4-Regular
    // One path edge has a variable length. It runs from the viniculumn
    // to a point near (14 units) the bottom of the surd. The viniculum
    // is 40 units thick. So the length of the line in question is:
    var vertSegment = viewBoxHeight - 54 - vbPad;
    alternate = "M702 " + vbPad + "H400000v40H742v" + vertSegment + "l-4 4-4 4c-.667.7\n-2 1.5-4 2.5s-4.167 1.833-6.5 2.5-5.5 1-9.5 1h-12l-28-84c-16.667-52-96.667\n-294.333-240-727l-212 -643 -85 170c-4-3.333-8.333-7.667-13 -13l-13-13l77-155\n 77-156c66 199.333 139 419.667 219 661 l218 661zM702 " + vbPad + "H400000v40H742z";
  }

  var pathNode = new domTree_PathNode(sqrtName, alternate);
  var svg = new SvgNode([pathNode], {
    // Note: 1000:1 ratio of viewBox to document em width.
    "width": "400em",
    "height": height + "em",
    "viewBox": "0 0 400000 " + viewBoxHeight,
    "preserveAspectRatio": "xMinYMin slice"
  });
  return buildCommon.makeSvgSpan(["hide-tail"], [svg], options);
};
/**
 * Make a sqrt image of the given height,
 */


var makeSqrtImage = function makeSqrtImage(height, options) {
  // Define a newOptions that removes the effect of size changes such as \Huge.
  // We don't pick different a height surd for \Huge. For it, we scale up.
  var newOptions = options.havingBaseSizing(); // Pick the desired surd glyph from a sequence of surds.

  var delim = traverseSequence("\\surd", height * newOptions.sizeMultiplier, stackLargeDelimiterSequence, newOptions);
  var sizeMultiplier = newOptions.sizeMultiplier; // default
  // Create a span containing an SVG image of a sqrt symbol.

  var span;
  var spanHeight = 0;
  var texHeight = 0;
  var viewBoxHeight = 0;
  var advanceWidth; // We create viewBoxes with 80 units of "padding" above each surd.
  // Then browser rounding error on the parent span height will not
  // encroach on the ink of the viniculum. But that padding is not
  // included in the TeX-like `height` used for calculation of
  // vertical alignment. So texHeight = span.height < span.style.height.

  if (delim.type === "small") {
    // Get an SVG that is derived from glyph U+221A in font KaTeX-Main.
    viewBoxHeight = 1000 + vbPad; // 1000 unit glyph height.

    if (height < 1.0) {
      sizeMultiplier = 1.0; // mimic a \textfont radical
    } else if (height < 1.4) {
      sizeMultiplier = 0.7; // mimic a \scriptfont radical
    }

    spanHeight = (1.0 + emPad) / sizeMultiplier;
    texHeight = 1.00 / sizeMultiplier;
    span = delimiter_sqrtSvg("sqrtMain", spanHeight, viewBoxHeight, options);
    span.style.minWidth = "0.853em";
    advanceWidth = 0.833 / sizeMultiplier; // from the font.
  } else if (delim.type === "large") {
    // These SVGs come from fonts: KaTeX_Size1, _Size2, etc.
    viewBoxHeight = (1000 + vbPad) * sizeToMaxHeight[delim.size];
    texHeight = sizeToMaxHeight[delim.size] / sizeMultiplier;
    spanHeight = (sizeToMaxHeight[delim.size] + emPad) / sizeMultiplier;
    span = delimiter_sqrtSvg("sqrtSize" + delim.size, spanHeight, viewBoxHeight, options);
    span.style.minWidth = "1.02em";
    advanceWidth = 1.0 / sizeMultiplier; // 1.0 from the font.
  } else {
    // Tall sqrt. In TeX, this would be stacked using multiple glyphs.
    // We'll use a single SVG to accomplish the same thing.
    spanHeight = height + emPad;
    texHeight = height;
    viewBoxHeight = Math.floor(1000 * height) + vbPad;
    span = delimiter_sqrtSvg("sqrtTall", spanHeight, viewBoxHeight, options);
    span.style.minWidth = "0.742em";
    advanceWidth = 1.056;
  }

  span.height = texHeight;
  span.style.height = spanHeight + "em";
  return {
    span: span,
    advanceWidth: advanceWidth,
    // Calculate the actual line width.
    // This actually should depend on the chosen font -- e.g. \boldmath
    // should use the thicker surd symbols from e.g. KaTeX_Main-Bold, and
    // have thicker rules.
    ruleWidth: options.fontMetrics().sqrtRuleThickness * sizeMultiplier
  };
}; // There are three kinds of delimiters, delimiters that stack when they become
// too large


var stackLargeDelimiters = ["(", "\\lparen", ")", "\\rparen", "[", "\\lbrack", "]", "\\rbrack", "\\{", "\\lbrace", "\\}", "\\rbrace", "\\lfloor", "\\rfloor", "\u230A", "\u230B", "\\lceil", "\\rceil", "\u2308", "\u2309", "\\surd"]; // delimiters that always stack

var stackAlwaysDelimiters = ["\\uparrow", "\\downarrow", "\\updownarrow", "\\Uparrow", "\\Downarrow", "\\Updownarrow", "|", "\\|", "\\vert", "\\Vert", "\\lvert", "\\rvert", "\\lVert", "\\rVert", "\\lgroup", "\\rgroup", "\u27EE", "\u27EF", "\\lmoustache", "\\rmoustache", "\u23B0", "\u23B1"]; // and delimiters that never stack

var stackNeverDelimiters = ["<", ">", "\\langle", "\\rangle", "/", "\\backslash", "\\lt", "\\gt"]; // Metrics of the different sizes. Found by looking at TeX's output of
// $\bigl| // \Bigl| \biggl| \Biggl| \showlists$
// Used to create stacked delimiters of appropriate sizes in makeSizedDelim.

var sizeToMaxHeight = [0, 1.2, 1.8, 2.4, 3.0];
/**
 * Used to create a delimiter of a specific size, where `size` is 1, 2, 3, or 4.
 */

var delimiter_makeSizedDelim = function makeSizedDelim(delim, size, options, mode, classes) {
  // < and > turn into \langle and \rangle in delimiters
  if (delim === "<" || delim === "\\lt" || delim === "\u27E8") {
    delim = "\\langle";
  } else if (delim === ">" || delim === "\\gt" || delim === "\u27E9") {
    delim = "\\rangle";
  } // Sized delimiters are never centered.


  if (utils.contains(stackLargeDelimiters, delim) || utils.contains(stackNeverDelimiters, delim)) {
    return delimiter_makeLargeDelim(delim, size, false, options, mode, classes);
  } else if (utils.contains(stackAlwaysDelimiters, delim)) {
    return delimiter_makeStackedDelim(delim, sizeToMaxHeight[size], false, options, mode, classes);
  } else {
    throw new src_ParseError("Illegal delimiter: '" + delim + "'");
  }
};
/**
 * There are three different sequences of delimiter sizes that the delimiters
 * follow depending on the kind of delimiter. This is used when creating custom
 * sized delimiters to decide whether to create a small, large, or stacked
 * delimiter.
 *
 * In real TeX, these sequences aren't explicitly defined, but are instead
 * defined inside the font metrics. Since there are only three sequences that
 * are possible for the delimiters that TeX defines, it is easier to just encode
 * them explicitly here.
 */


// Delimiters that never stack try small delimiters and large delimiters only
var stackNeverDelimiterSequence = [{
  type: "small",
  style: src_Style.SCRIPTSCRIPT
}, {
  type: "small",
  style: src_Style.SCRIPT
}, {
  type: "small",
  style: src_Style.TEXT
}, {
  type: "large",
  size: 1
}, {
  type: "large",
  size: 2
}, {
  type: "large",
  size: 3
}, {
  type: "large",
  size: 4
}]; // Delimiters that always stack try the small delimiters first, then stack

var stackAlwaysDelimiterSequence = [{
  type: "small",
  style: src_Style.SCRIPTSCRIPT
}, {
  type: "small",
  style: src_Style.SCRIPT
}, {
  type: "small",
  style: src_Style.TEXT
}, {
  type: "stack"
}]; // Delimiters that stack when large try the small and then large delimiters, and
// stack afterwards

var stackLargeDelimiterSequence = [{
  type: "small",
  style: src_Style.SCRIPTSCRIPT
}, {
  type: "small",
  style: src_Style.SCRIPT
}, {
  type: "small",
  style: src_Style.TEXT
}, {
  type: "large",
  size: 1
}, {
  type: "large",
  size: 2
}, {
  type: "large",
  size: 3
}, {
  type: "large",
  size: 4
}, {
  type: "stack"
}];
/**
 * Get the font used in a delimiter based on what kind of delimiter it is.
 * TODO(#963) Use more specific font family return type once that is introduced.
 */

var delimTypeToFont = function delimTypeToFont(type) {
  if (type.type === "small") {
    return "Main-Regular";
  } else if (type.type === "large") {
    return "Size" + type.size + "-Regular";
  } else if (type.type === "stack") {
    return "Size4-Regular";
  } else {
    throw new Error("Add support for delim type '" + type.type + "' here.");
  }
};
/**
 * Traverse a sequence of types of delimiters to decide what kind of delimiter
 * should be used to create a delimiter of the given height+depth.
 */


var traverseSequence = function traverseSequence(delim, height, sequence, options) {
  // Here, we choose the index we should start at in the sequences. In smaller
  // sizes (which correspond to larger numbers in style.size) we start earlier
  // in the sequence. Thus, scriptscript starts at index 3-3=0, script starts
  // at index 3-2=1, text starts at 3-1=2, and display starts at min(2,3-0)=2
  var start = Math.min(2, 3 - options.style.size);

  for (var i = start; i < sequence.length; i++) {
    if (sequence[i].type === "stack") {
      // This is always the last delimiter, so we just break the loop now.
      break;
    }

    var metrics = delimiter_getMetrics(delim, delimTypeToFont(sequence[i]), "math");
    var heightDepth = metrics.height + metrics.depth; // Small delimiters are scaled down versions of the same font, so we
    // account for the style change size.

    if (sequence[i].type === "small") {
      var newOptions = options.havingBaseStyle(sequence[i].style);
      heightDepth *= newOptions.sizeMultiplier;
    } // Check if the delimiter at this size works for the given height.


    if (heightDepth > height) {
      return sequence[i];
    }
  } // If we reached the end of the sequence, return the last sequence element.


  return sequence[sequence.length - 1];
};
/**
 * Make a delimiter of a given height+depth, with optional centering. Here, we
 * traverse the sequences, and create a delimiter that the sequence tells us to.
 */


var delimiter_makeCustomSizedDelim = function makeCustomSizedDelim(delim, height, center, options, mode, classes) {
  if (delim === "<" || delim === "\\lt" || delim === "\u27E8") {
    delim = "\\langle";
  } else if (delim === ">" || delim === "\\gt" || delim === "\u27E9") {
    delim = "\\rangle";
  } // Decide what sequence to use


  var sequence;

  if (utils.contains(stackNeverDelimiters, delim)) {
    sequence = stackNeverDelimiterSequence;
  } else if (utils.contains(stackLargeDelimiters, delim)) {
    sequence = stackLargeDelimiterSequence;
  } else {
    sequence = stackAlwaysDelimiterSequence;
  } // Look through the sequence


  var delimType = traverseSequence(delim, height, sequence, options); // Get the delimiter from font glyphs.
  // Depending on the sequence element we decided on, call the
  // appropriate function.

  if (delimType.type === "small") {
    return delimiter_makeSmallDelim(delim, delimType.style, center, options, mode, classes);
  } else if (delimType.type === "large") {
    return delimiter_makeLargeDelim(delim, delimType.size, center, options, mode, classes);
  } else
    /* if (delimType.type === "stack") */
    {
      return delimiter_makeStackedDelim(delim, height, center, options, mode, classes);
    }
};
/**
 * Make a delimiter for use with `\left` and `\right`, given a height and depth
 * of an expression that the delimiters surround.
 */


var makeLeftRightDelim = function makeLeftRightDelim(delim, height, depth, options, mode, classes) {
  // We always center \left/\right delimiters, so the axis is always shifted
  var axisHeight = options.fontMetrics().axisHeight * options.sizeMultiplier; // Taken from TeX source, tex.web, function make_left_right

  var delimiterFactor = 901;
  var delimiterExtend = 5.0 / options.fontMetrics().ptPerEm;
  var maxDistFromAxis = Math.max(height - axisHeight, depth + axisHeight);
  var totalHeight = Math.max( // In real TeX, calculations are done using integral values which are
  // 65536 per pt, or 655360 per em. So, the division here truncates in
  // TeX but doesn't here, producing different results. If we wanted to
  // exactly match TeX's calculation, we could do
  //   Math.floor(655360 * maxDistFromAxis / 500) *
  //    delimiterFactor / 655360
  // (To see the difference, compare
  //    x^{x^{\left(\rule{0.1em}{0.68em}\right)}}
  // in TeX and KaTeX)
  maxDistFromAxis / 500 * delimiterFactor, 2 * maxDistFromAxis - delimiterExtend); // Finally, we defer to `makeCustomSizedDelim` with our calculated total
  // height

  return delimiter_makeCustomSizedDelim(delim, totalHeight, true, options, mode, classes);
};

/* harmony default export */ var delimiter = ({
  sqrtImage: makeSqrtImage,
  sizedDelim: delimiter_makeSizedDelim,
  customSizedDelim: delimiter_makeCustomSizedDelim,
  leftRightDelim: makeLeftRightDelim
});
// CONCATENATED MODULE: ./src/functions/delimsizing.js









// Extra data needed for the delimiter handler down below
var delimiterSizes = {
  "\\bigl": {
    mclass: "mopen",
    size: 1
  },
  "\\Bigl": {
    mclass: "mopen",
    size: 2
  },
  "\\biggl": {
    mclass: "mopen",
    size: 3
  },
  "\\Biggl": {
    mclass: "mopen",
    size: 4
  },
  "\\bigr": {
    mclass: "mclose",
    size: 1
  },
  "\\Bigr": {
    mclass: "mclose",
    size: 2
  },
  "\\biggr": {
    mclass: "mclose",
    size: 3
  },
  "\\Biggr": {
    mclass: "mclose",
    size: 4
  },
  "\\bigm": {
    mclass: "mrel",
    size: 1
  },
  "\\Bigm": {
    mclass: "mrel",
    size: 2
  },
  "\\biggm": {
    mclass: "mrel",
    size: 3
  },
  "\\Biggm": {
    mclass: "mrel",
    size: 4
  },
  "\\big": {
    mclass: "mord",
    size: 1
  },
  "\\Big": {
    mclass: "mord",
    size: 2
  },
  "\\bigg": {
    mclass: "mord",
    size: 3
  },
  "\\Bigg": {
    mclass: "mord",
    size: 4
  }
};
var delimiters = ["(", "\\lparen", ")", "\\rparen", "[", "\\lbrack", "]", "\\rbrack", "\\{", "\\lbrace", "\\}", "\\rbrace", "\\lfloor", "\\rfloor", "\u230A", "\u230B", "\\lceil", "\\rceil", "\u2308", "\u2309", "<", ">", "\\langle", "\u27E8", "\\rangle", "\u27E9", "\\lt", "\\gt", "\\lvert", "\\rvert", "\\lVert", "\\rVert", "\\lgroup", "\\rgroup", "\u27EE", "\u27EF", "\\lmoustache", "\\rmoustache", "\u23B0", "\u23B1", "/", "\\backslash", "|", "\\vert", "\\|", "\\Vert", "\\uparrow", "\\Uparrow", "\\downarrow", "\\Downarrow", "\\updownarrow", "\\Updownarrow", "."];

// Delimiter functions
function checkDelimiter(delim, context) {
  var symDelim = checkSymbolNodeType(delim);

  if (symDelim && utils.contains(delimiters, symDelim.text)) {
    return symDelim;
  } else {
    throw new src_ParseError("Invalid delimiter: '" + (symDelim ? symDelim.text : JSON.stringify(delim)) + "' after '" + context.funcName + "'", delim);
  }
}

defineFunction({
  type: "delimsizing",
  names: ["\\bigl", "\\Bigl", "\\biggl", "\\Biggl", "\\bigr", "\\Bigr", "\\biggr", "\\Biggr", "\\bigm", "\\Bigm", "\\biggm", "\\Biggm", "\\big", "\\Big", "\\bigg", "\\Bigg"],
  props: {
    numArgs: 1
  },
  handler: function handler(context, args) {
    var delim = checkDelimiter(args[0], context);
    return {
      type: "delimsizing",
      mode: context.parser.mode,
      size: delimiterSizes[context.funcName].size,
      mclass: delimiterSizes[context.funcName].mclass,
      delim: delim.text
    };
  },
  htmlBuilder: function htmlBuilder(group, options) {
    if (group.delim === ".") {
      // Empty delimiters still count as elements, even though they don't
      // show anything.
      return buildCommon.makeSpan([group.mclass]);
    } // Use delimiter.sizedDelim to generate the delimiter.


    return delimiter.sizedDelim(group.delim, group.size, options, group.mode, [group.mclass]);
  },
  mathmlBuilder: function mathmlBuilder(group) {
    var children = [];

    if (group.delim !== ".") {
      children.push(buildMathML_makeText(group.delim, group.mode));
    }

    var node = new mathMLTree.MathNode("mo", children);

    if (group.mclass === "mopen" || group.mclass === "mclose") {
      // Only some of the delimsizing functions act as fences, and they
      // return "mopen" or "mclose" mclass.
      node.setAttribute("fence", "true");
    } else {
      // Explicitly disable fencing if it's not a fence, to override the
      // defaults.
      node.setAttribute("fence", "false");
    }

    return node;
  }
});

function assertParsed(group) {
  if (!group.body) {
    throw new Error("Bug: The leftright ParseNode wasn't fully parsed.");
  }
}

defineFunction({
  type: "leftright-right",
  names: ["\\right"],
  props: {
    numArgs: 1
  },
  handler: function handler(context, args) {
    // \left case below triggers parsing of \right in
    //   `const right = parser.parseFunction();`
    // uses this return value.
    return {
      type: "leftright-right",
      mode: context.parser.mode,
      delim: checkDelimiter(args[0], context).text
    };
  }
});
defineFunction({
  type: "leftright",
  names: ["\\left"],
  props: {
    numArgs: 1
  },
  handler: function handler(context, args) {
    var delim = checkDelimiter(args[0], context);
    var parser = context.parser; // Parse out the implicit body

    ++parser.leftrightDepth; // parseExpression stops before '\\right'

    var body = parser.parseExpression(false);
    --parser.leftrightDepth; // Check the next token

    parser.expect("\\right", false);
    var right = assertNodeType(parser.parseFunction(), "leftright-right");
    return {
      type: "leftright",
      mode: parser.mode,
      body: body,
      left: delim.text,
      right: right.delim
    };
  },
  htmlBuilder: function htmlBuilder(group, options) {
    assertParsed(group); // Build the inner expression

    var inner = buildHTML_buildExpression(group.body, options, true, [null, "mclose"]);
    var innerHeight = 0;
    var innerDepth = 0;
    var hadMiddle = false; // Calculate its height and depth

    for (var i = 0; i < inner.length; i++) {
      // Property `isMiddle` not defined on `span`. See comment in
      // "middle"'s htmlBuilder.
      // $FlowFixMe
      if (inner[i].isMiddle) {
        hadMiddle = true;
      } else {
        innerHeight = Math.max(inner[i].height, innerHeight);
        innerDepth = Math.max(inner[i].depth, innerDepth);
      }
    } // The size of delimiters is the same, regardless of what style we are
    // in. Thus, to correctly calculate the size of delimiter we need around
    // a group, we scale down the inner size based on the size.


    innerHeight *= options.sizeMultiplier;
    innerDepth *= options.sizeMultiplier;
    var leftDelim;

    if (group.left === ".") {
      // Empty delimiters in \left and \right make null delimiter spaces.
      leftDelim = makeNullDelimiter(options, ["mopen"]);
    } else {
      // Otherwise, use leftRightDelim to generate the correct sized
      // delimiter.
      leftDelim = delimiter.leftRightDelim(group.left, innerHeight, innerDepth, options, group.mode, ["mopen"]);
    } // Add it to the beginning of the expression


    inner.unshift(leftDelim); // Handle middle delimiters

    if (hadMiddle) {
      for (var _i = 1; _i < inner.length; _i++) {
        var middleDelim = inner[_i]; // Property `isMiddle` not defined on `span`. See comment in
        // "middle"'s htmlBuilder.
        // $FlowFixMe

        var isMiddle = middleDelim.isMiddle;

        if (isMiddle) {
          // Apply the options that were active when \middle was called
          inner[_i] = delimiter.leftRightDelim(isMiddle.delim, innerHeight, innerDepth, isMiddle.options, group.mode, []);
        }
      }
    }

    var rightDelim; // Same for the right delimiter

    if (group.right === ".") {
      rightDelim = makeNullDelimiter(options, ["mclose"]);
    } else {
      rightDelim = delimiter.leftRightDelim(group.right, innerHeight, innerDepth, options, group.mode, ["mclose"]);
    } // Add it to the end of the expression.


    inner.push(rightDelim);
    return buildCommon.makeSpan(["minner"], inner, options);
  },
  mathmlBuilder: function mathmlBuilder(group, options) {
    assertParsed(group);
    var inner = buildMathML_buildExpression(group.body, options);

    if (group.left !== ".") {
      var leftNode = new mathMLTree.MathNode("mo", [buildMathML_makeText(group.left, group.mode)]);
      leftNode.setAttribute("fence", "true");
      inner.unshift(leftNode);
    }

    if (group.right !== ".") {
      var rightNode = new mathMLTree.MathNode("mo", [buildMathML_makeText(group.right, group.mode)]);
      rightNode.setAttribute("fence", "true");
      inner.push(rightNode);
    }

    return buildMathML_makeRow(inner);
  }
});
defineFunction({
  type: "middle",
  names: ["\\middle"],
  props: {
    numArgs: 1
  },
  handler: function handler(context, args) {
    var delim = checkDelimiter(args[0], context);

    if (!context.parser.leftrightDepth) {
      throw new src_ParseError("\\middle without preceding \\left", delim);
    }

    return {
      type: "middle",
      mode: context.parser.mode,
      delim: delim.text
    };
  },
  htmlBuilder: function htmlBuilder(group, options) {
    var middleDelim;

    if (group.delim === ".") {
      middleDelim = makeNullDelimiter(options, []);
    } else {
      middleDelim = delimiter.sizedDelim(group.delim, 1, options, group.mode, []);
      var isMiddle = {
        delim: group.delim,
        options: options
      }; // Property `isMiddle` not defined on `span`. It is only used in
      // this file above.
      // TODO: Fix this violation of the `span` type and possibly rename
      // things since `isMiddle` sounds like a boolean, but is a struct.
      // $FlowFixMe

      middleDelim.isMiddle = isMiddle;
    }

    return middleDelim;
  },
  mathmlBuilder: function mathmlBuilder(group, options) {
    var middleNode = new mathMLTree.MathNode("mo", [buildMathML_makeText(group.delim, group.mode)]);
    middleNode.setAttribute("fence", "true");
    return middleNode;
  }
});
// CONCATENATED MODULE: ./src/functions/enclose.js









var enclose_htmlBuilder = function htmlBuilder(group, options) {
  // \cancel, \bcancel, \xcancel, \sout, \fbox, \colorbox, \fcolorbox
  // Some groups can return document fragments.  Handle those by wrapping
  // them in a span.
  var inner = buildCommon.wrapFragment(buildHTML_buildGroup(group.body, options), options);
  var label = group.label.substr(1);
  var scale = options.sizeMultiplier;
  var img;
  var imgShift = 0; // In the LaTeX cancel package, line geometry is slightly different
  // depending on whether the subject is wider than it is tall, or vice versa.
  // We don't know the width of a group, so as a proxy, we test if
  // the subject is a single character. This captures most of the
  // subjects that should get the "tall" treatment.

  var isSingleChar = utils.isCharacterBox(group.body);

  if (label === "sout") {
    img = buildCommon.makeSpan(["stretchy", "sout"]);
    img.height = options.fontMetrics().defaultRuleThickness / scale;
    imgShift = -0.5 * options.fontMetrics().xHeight;
  } else {
    // Add horizontal padding
    if (/cancel/.test(label)) {
      if (!isSingleChar) {
        inner.classes.push("cancel-pad");
      }
    } else {
      inner.classes.push("boxpad");
    } // Add vertical padding


    var vertPad = 0; // ref: LaTeX source2e: \fboxsep = 3pt;  \fboxrule = .4pt
    // ref: cancel package: \advance\totalheight2\p@ % "+2"

    if (/box/.test(label)) {
      vertPad = label === "colorbox" ? 0.3 : 0.34;
    } else {
      vertPad = isSingleChar ? 0.2 : 0;
    }

    img = stretchy.encloseSpan(inner, label, vertPad, options);
    imgShift = inner.depth + vertPad;

    if (group.backgroundColor) {
      img.style.backgroundColor = group.backgroundColor;

      if (group.borderColor) {
        img.style.borderColor = group.borderColor;
      }
    }
  }

  var vlist;

  if (group.backgroundColor) {
    vlist = buildCommon.makeVList({
      positionType: "individualShift",
      children: [// Put the color background behind inner;
      {
        type: "elem",
        elem: img,
        shift: imgShift
      }, {
        type: "elem",
        elem: inner,
        shift: 0
      }]
    }, options);
  } else {
    vlist = buildCommon.makeVList({
      positionType: "individualShift",
      children: [// Write the \cancel stroke on top of inner.
      {
        type: "elem",
        elem: inner,
        shift: 0
      }, {
        type: "elem",
        elem: img,
        shift: imgShift,
        wrapperClasses: /cancel/.test(label) ? ["svg-align"] : []
      }]
    }, options);
  }

  if (/cancel/.test(label)) {
    // The cancel package documentation says that cancel lines add their height
    // to the expression, but tests show that isn't how it actually works.
    vlist.height = inner.height;
    vlist.depth = inner.depth;
  }

  if (/cancel/.test(label) && !isSingleChar) {
    // cancel does not create horiz space for its line extension.
    return buildCommon.makeSpan(["mord", "cancel-lap"], [vlist], options);
  } else {
    return buildCommon.makeSpan(["mord"], [vlist], options);
  }
};

var enclose_mathmlBuilder = function mathmlBuilder(group, options) {
  var node = new mathMLTree.MathNode("menclose", [buildMathML_buildGroup(group.body, options)]);

  switch (group.label) {
    case "\\cancel":
      node.setAttribute("notation", "updiagonalstrike");
      break;

    case "\\bcancel":
      node.setAttribute("notation", "downdiagonalstrike");
      break;

    case "\\sout":
      node.setAttribute("notation", "horizontalstrike");
      break;

    case "\\fbox":
      node.setAttribute("notation", "box");
      break;

    case "\\fcolorbox":
      // TODO(ron): I don't know any way to set the border color.
      node.setAttribute("notation", "box");
      break;

    case "\\xcancel":
      node.setAttribute("notation", "updiagonalstrike downdiagonalstrike");
      break;
  }

  if (group.backgroundColor) {
    node.setAttribute("mathbackground", group.backgroundColor);
  }

  return node;
};

defineFunction({
  type: "enclose",
  names: ["\\colorbox"],
  props: {
    numArgs: 2,
    allowedInText: true,
    greediness: 3,
    argTypes: ["color", "text"]
  },
  handler: function handler(_ref, args, optArgs) {
    var parser = _ref.parser,
        funcName = _ref.funcName;
    var color = assertNodeType(args[0], "color-token").color;
    var body = args[1];
    return {
      type: "enclose",
      mode: parser.mode,
      label: funcName,
      backgroundColor: color,
      body: body
    };
  },
  htmlBuilder: enclose_htmlBuilder,
  mathmlBuilder: enclose_mathmlBuilder
});
defineFunction({
  type: "enclose",
  names: ["\\fcolorbox"],
  props: {
    numArgs: 3,
    allowedInText: true,
    greediness: 3,
    argTypes: ["color", "color", "text"]
  },
  handler: function handler(_ref2, args, optArgs) {
    var parser = _ref2.parser,
        funcName = _ref2.funcName;
    var borderColor = assertNodeType(args[0], "color-token").color;
    var backgroundColor = assertNodeType(args[1], "color-token").color;
    var body = args[2];
    return {
      type: "enclose",
      mode: parser.mode,
      label: funcName,
      backgroundColor: backgroundColor,
      borderColor: borderColor,
      body: body
    };
  },
  htmlBuilder: enclose_htmlBuilder,
  mathmlBuilder: enclose_mathmlBuilder
});
defineFunction({
  type: "enclose",
  names: ["\\fbox"],
  props: {
    numArgs: 1,
    argTypes: ["text"],
    allowedInText: true
  },
  handler: function handler(_ref3, args) {
    var parser = _ref3.parser;
    return {
      type: "enclose",
      mode: parser.mode,
      label: "\\fbox",
      body: args[0]
    };
  }
});
defineFunction({
  type: "enclose",
  names: ["\\cancel", "\\bcancel", "\\xcancel", "\\sout"],
  props: {
    numArgs: 1
  },
  handler: function handler(_ref4, args, optArgs) {
    var parser = _ref4.parser,
        funcName = _ref4.funcName;
    var body = args[0];
    return {
      type: "enclose",
      mode: parser.mode,
      label: funcName,
      body: body
    };
  },
  htmlBuilder: enclose_htmlBuilder,
  mathmlBuilder: enclose_mathmlBuilder
});
// CONCATENATED MODULE: ./src/defineEnvironment.js


/**
 * All registered environments.
 * `environments.js` exports this same dictionary again and makes it public.
 * `Parser.js` requires this dictionary via `environments.js`.
 */
var _environments = {};
function defineEnvironment(_ref) {
  var type = _ref.type,
      names = _ref.names,
      props = _ref.props,
      handler = _ref.handler,
      htmlBuilder = _ref.htmlBuilder,
      mathmlBuilder = _ref.mathmlBuilder;
  // Set default values of environments.
  var data = {
    type: type,
    numArgs: props.numArgs || 0,
    greediness: 1,
    allowedInText: false,
    numOptionalArgs: 0,
    handler: handler
  };

  for (var i = 0; i < names.length; ++i) {
    // TODO: The value type of _environments should be a type union of all
    // possible `EnvSpec<>` possibilities instead of `EnvSpec<*>`, which is
    // an existential type.
    // $FlowFixMe
    _environments[names[i]] = data;
  }

  if (htmlBuilder) {
    _htmlGroupBuilders[type] = htmlBuilder;
  }

  if (mathmlBuilder) {
    _mathmlGroupBuilders[type] = mathmlBuilder;
  }
}
// CONCATENATED MODULE: ./src/environments/array.js












function getHLines(parser) {
  // Return an array. The array length = number of hlines.
  // Each element in the array tells if the line is dashed.
  var hlineInfo = [];
  parser.consumeSpaces();
  var nxt = parser.nextToken.text;

  while (nxt === "\\hline" || nxt === "\\hdashline") {
    parser.consume();
    hlineInfo.push(nxt === "\\hdashline");
    parser.consumeSpaces();
    nxt = parser.nextToken.text;
  }

  return hlineInfo;
}
/**
 * Parse the body of the environment, with rows delimited by \\ and
 * columns delimited by &, and create a nested list in row-major order
 * with one group per cell.  If given an optional argument style
 * ("text", "display", etc.), then each cell is cast into that style.
 */


function parseArray(parser, _ref, style) {
  var hskipBeforeAndAfter = _ref.hskipBeforeAndAfter,
      addJot = _ref.addJot,
      cols = _ref.cols,
      arraystretch = _ref.arraystretch;
  // Parse body of array with \\ temporarily mapped to \cr
  parser.gullet.beginGroup();
  parser.gullet.macros.set("\\\\", "\\cr"); // Get current arraystretch if it's not set by the environment

  if (!arraystretch) {
    var stretch = parser.gullet.expandMacroAsText("\\arraystretch");

    if (stretch == null) {
      // Default \arraystretch from lttab.dtx
      arraystretch = 1;
    } else {
      arraystretch = parseFloat(stretch);

      if (!arraystretch || arraystretch < 0) {
        throw new src_ParseError("Invalid \\arraystretch: " + stretch);
      }
    }
  }

  var row = [];
  var body = [row];
  var rowGaps = [];
  var hLinesBeforeRow = []; // Test for \hline at the top of the array.

  hLinesBeforeRow.push(getHLines(parser));

  while (true) {
    // eslint-disable-line no-constant-condition
    var cell = parser.parseExpression(false, "\\cr");
    cell = {
      type: "ordgroup",
      mode: parser.mode,
      body: cell
    };

    if (style) {
      cell = {
        type: "styling",
        mode: parser.mode,
        style: style,
        body: [cell]
      };
    }

    row.push(cell);
    var next = parser.nextToken.text;

    if (next === "&") {
      parser.consume();
    } else if (next === "\\end") {
      // Arrays terminate newlines with `\crcr` which consumes a `\cr` if
      // the last line is empty.
      // NOTE: Currently, `cell` is the last item added into `row`.
      if (row.length === 1 && cell.type === "styling" && cell.body[0].body.length === 0) {
        body.pop();
      }

      if (hLinesBeforeRow.length < body.length + 1) {
        hLinesBeforeRow.push([]);
      }

      break;
    } else if (next === "\\cr") {
      var cr = assertNodeType(parser.parseFunction(), "cr");
      rowGaps.push(cr.size); // check for \hline(s) following the row separator

      hLinesBeforeRow.push(getHLines(parser));
      row = [];
      body.push(row);
    } else {
      throw new src_ParseError("Expected & or \\\\ or \\cr or \\end", parser.nextToken);
    }
  }

  parser.gullet.endGroup();
  return {
    type: "array",
    mode: parser.mode,
    addJot: addJot,
    arraystretch: arraystretch,
    body: body,
    cols: cols,
    rowGaps: rowGaps,
    hskipBeforeAndAfter: hskipBeforeAndAfter,
    hLinesBeforeRow: hLinesBeforeRow
  };
} // Decides on a style for cells in an array according to whether the given
// environment name starts with the letter 'd'.


function dCellStyle(envName) {
  if (envName.substr(0, 1) === "d") {
    return "display";
  } else {
    return "text";
  }
}

var array_htmlBuilder = function htmlBuilder(group, options) {
  var r;
  var c;
  var nr = group.body.length;
  var hLinesBeforeRow = group.hLinesBeforeRow;
  var nc = 0;
  var body = new Array(nr);
  var hlines = []; // Horizontal spacing

  var pt = 1 / options.fontMetrics().ptPerEm;
  var arraycolsep = 5 * pt; // \arraycolsep in article.cls
  // Vertical spacing

  var baselineskip = 12 * pt; // see size10.clo
  // Default \jot from ltmath.dtx
  // TODO(edemaine): allow overriding \jot via \setlength (#687)

  var jot = 3 * pt;
  var arrayskip = group.arraystretch * baselineskip;
  var arstrutHeight = 0.7 * arrayskip; // \strutbox in ltfsstrc.dtx and

  var arstrutDepth = 0.3 * arrayskip; // \@arstrutbox in lttab.dtx

  var totalHeight = 0; // Set a position for \hline(s) at the top of the array, if any.

  function setHLinePos(hlinesInGap) {
    for (var i = 0; i < hlinesInGap.length; ++i) {
      if (i > 0) {
        totalHeight += 0.25;
      }

      hlines.push({
        pos: totalHeight,
        isDashed: hlinesInGap[i]
      });
    }
  }

  setHLinePos(hLinesBeforeRow[0]);

  for (r = 0; r < group.body.length; ++r) {
    var inrow = group.body[r];
    var height = arstrutHeight; // \@array adds an \@arstrut

    var depth = arstrutDepth; // to each tow (via the template)

    if (nc < inrow.length) {
      nc = inrow.length;
    }

    var outrow = new Array(inrow.length);

    for (c = 0; c < inrow.length; ++c) {
      var elt = buildHTML_buildGroup(inrow[c], options);

      if (depth < elt.depth) {
        depth = elt.depth;
      }

      if (height < elt.height) {
        height = elt.height;
      }

      outrow[c] = elt;
    }

    var rowGap = group.rowGaps[r];
    var gap = 0;

    if (rowGap) {
      gap = units_calculateSize(rowGap, options);

      if (gap > 0) {
        // \@argarraycr
        gap += arstrutDepth;

        if (depth < gap) {
          depth = gap; // \@xargarraycr
        }

        gap = 0;
      }
    } // In AMS multiline environments such as aligned and gathered, rows
    // correspond to lines that have additional \jot added to the
    // \baselineskip via \openup.


    if (group.addJot) {
      depth += jot;
    }

    outrow.height = height;
    outrow.depth = depth;
    totalHeight += height;
    outrow.pos = totalHeight;
    totalHeight += depth + gap; // \@yargarraycr

    body[r] = outrow; // Set a position for \hline(s), if any.

    setHLinePos(hLinesBeforeRow[r + 1]);
  }

  var offset = totalHeight / 2 + options.fontMetrics().axisHeight;
  var colDescriptions = group.cols || [];
  var cols = [];
  var colSep;
  var colDescrNum;

  for (c = 0, colDescrNum = 0; // Continue while either there are more columns or more column
  // descriptions, so trailing separators don't get lost.
  c < nc || colDescrNum < colDescriptions.length; ++c, ++colDescrNum) {
    var colDescr = colDescriptions[colDescrNum] || {};
    var firstSeparator = true;

    while (colDescr.type === "separator") {
      // If there is more than one separator in a row, add a space
      // between them.
      if (!firstSeparator) {
        colSep = buildCommon.makeSpan(["arraycolsep"], []);
        colSep.style.width = options.fontMetrics().doubleRuleSep + "em";
        cols.push(colSep);
      }

      if (colDescr.separator === "|") {
        var separator = buildCommon.makeSpan(["vertical-separator"], [], options);
        separator.style.height = totalHeight + "em";
        separator.style.verticalAlign = -(totalHeight - offset) + "em";
        cols.push(separator);
      } else if (colDescr.separator === ":") {
        var _separator = buildCommon.makeSpan(["vertical-separator", "vs-dashed"], [], options);

        _separator.style.height = totalHeight + "em";
        _separator.style.verticalAlign = -(totalHeight - offset) + "em";
        cols.push(_separator);
      } else {
        throw new src_ParseError("Invalid separator type: " + colDescr.separator);
      }

      colDescrNum++;
      colDescr = colDescriptions[colDescrNum] || {};
      firstSeparator = false;
    }

    if (c >= nc) {
      continue;
    }

    var sepwidth = void 0;

    if (c > 0 || group.hskipBeforeAndAfter) {
      sepwidth = utils.deflt(colDescr.pregap, arraycolsep);

      if (sepwidth !== 0) {
        colSep = buildCommon.makeSpan(["arraycolsep"], []);
        colSep.style.width = sepwidth + "em";
        cols.push(colSep);
      }
    }

    var col = [];

    for (r = 0; r < nr; ++r) {
      var row = body[r];
      var elem = row[c];

      if (!elem) {
        continue;
      }

      var shift = row.pos - offset;
      elem.depth = row.depth;
      elem.height = row.height;
      col.push({
        type: "elem",
        elem: elem,
        shift: shift
      });
    }

    col = buildCommon.makeVList({
      positionType: "individualShift",
      children: col
    }, options);
    col = buildCommon.makeSpan(["col-align-" + (colDescr.align || "c")], [col]);
    cols.push(col);

    if (c < nc - 1 || group.hskipBeforeAndAfter) {
      sepwidth = utils.deflt(colDescr.postgap, arraycolsep);

      if (sepwidth !== 0) {
        colSep = buildCommon.makeSpan(["arraycolsep"], []);
        colSep.style.width = sepwidth + "em";
        cols.push(colSep);
      }
    }
  }

  body = buildCommon.makeSpan(["mtable"], cols); // Add \hline(s), if any.

  if (hlines.length > 0) {
    var line = buildCommon.makeLineSpan("hline", options, 0.05);
    var dashes = buildCommon.makeLineSpan("hdashline", options, 0.05);
    var vListElems = [{
      type: "elem",
      elem: body,
      shift: 0
    }];

    while (hlines.length > 0) {
      var hline = hlines.pop();
      var lineShift = hline.pos - offset;

      if (hline.isDashed) {
        vListElems.push({
          type: "elem",
          elem: dashes,
          shift: lineShift
        });
      } else {
        vListElems.push({
          type: "elem",
          elem: line,
          shift: lineShift
        });
      }
    }

    body = buildCommon.makeVList({
      positionType: "individualShift",
      children: vListElems
    }, options);
  }

  return buildCommon.makeSpan(["mord"], [body], options);
};

var array_mathmlBuilder = function mathmlBuilder(group, options) {
  return new mathMLTree.MathNode("mtable", group.body.map(function (row) {
    return new mathMLTree.MathNode("mtr", row.map(function (cell) {
      return new mathMLTree.MathNode("mtd", [buildMathML_buildGroup(cell, options)]);
    }));
  }));
}; // Convenience function for aligned and alignedat environments.


var array_alignedHandler = function alignedHandler(context, args) {
  var cols = [];
  var res = parseArray(context.parser, {
    cols: cols,
    addJot: true
  }, "display"); // Determining number of columns.
  // 1. If the first argument is given, we use it as a number of columns,
  //    and makes sure that each row doesn't exceed that number.
  // 2. Otherwise, just count number of columns = maximum number
  //    of cells in each row ("aligned" mode -- isAligned will be true).
  //
  // At the same time, prepend empty group {} at beginning of every second
  // cell in each row (starting with second cell) so that operators become
  // binary.  This behavior is implemented in amsmath's \start@aligned.

  var numMaths;
  var numCols = 0;
  var emptyGroup = {
    type: "ordgroup",
    mode: context.mode,
    body: []
  };
  var ordgroup = checkNodeType(args[0], "ordgroup");

  if (ordgroup) {
    var arg0 = "";

    for (var i = 0; i < ordgroup.body.length; i++) {
      var textord = assertNodeType(ordgroup.body[i], "textord");
      arg0 += textord.text;
    }

    numMaths = Number(arg0);
    numCols = numMaths * 2;
  }

  var isAligned = !numCols;
  res.body.forEach(function (row) {
    for (var _i = 1; _i < row.length; _i += 2) {
      // Modify ordgroup node within styling node
      var styling = assertNodeType(row[_i], "styling");

      var _ordgroup = assertNodeType(styling.body[0], "ordgroup");

      _ordgroup.body.unshift(emptyGroup);
    }

    if (!isAligned) {
      // Case 1
      var curMaths = row.length / 2;

      if (numMaths < curMaths) {
        throw new src_ParseError("Too many math in a row: " + ("expected " + numMaths + ", but got " + curMaths), row[0]);
      }
    } else if (numCols < row.length) {
      // Case 2
      numCols = row.length;
    }
  }); // Adjusting alignment.
  // In aligned mode, we add one \qquad between columns;
  // otherwise we add nothing.

  for (var _i2 = 0; _i2 < numCols; ++_i2) {
    var align = "r";
    var pregap = 0;

    if (_i2 % 2 === 1) {
      align = "l";
    } else if (_i2 > 0 && isAligned) {
      // "aligned" mode.
      pregap = 1; // add one \quad
    }

    cols[_i2] = {
      type: "align",
      align: align,
      pregap: pregap,
      postgap: 0
    };
  }

  return res;
}; // Arrays are part of LaTeX, defined in lttab.dtx so its documentation
// is part of the source2e.pdf file of LaTeX2e source documentation.
// {darray} is an {array} environment where cells are set in \displaystyle,
// as defined in nccmath.sty.


defineEnvironment({
  type: "array",
  names: ["array", "darray"],
  props: {
    numArgs: 1
  },
  handler: function handler(context, args) {
    // Since no types are specified above, the two possibilities are
    // - The argument is wrapped in {} or [], in which case Parser's
    //   parseGroup() returns an "ordgroup" wrapping some symbol node.
    // - The argument is a bare symbol node.
    var symNode = checkSymbolNodeType(args[0]);
    var colalign = symNode ? [args[0]] : assertNodeType(args[0], "ordgroup").body;
    var cols = colalign.map(function (nde) {
      var node = assertSymbolNodeType(nde);
      var ca = node.text;

      if ("lcr".indexOf(ca) !== -1) {
        return {
          type: "align",
          align: ca
        };
      } else if (ca === "|") {
        return {
          type: "separator",
          separator: "|"
        };
      } else if (ca === ":") {
        return {
          type: "separator",
          separator: ":"
        };
      }

      throw new src_ParseError("Unknown column alignment: " + ca, nde);
    });
    var res = {
      cols: cols,
      hskipBeforeAndAfter: true // \@preamble in lttab.dtx

    };
    return parseArray(context.parser, res, dCellStyle(context.envName));
  },
  htmlBuilder: array_htmlBuilder,
  mathmlBuilder: array_mathmlBuilder
}); // The matrix environments of amsmath builds on the array environment
// of LaTeX, which is discussed above.

defineEnvironment({
  type: "array",
  names: ["matrix", "pmatrix", "bmatrix", "Bmatrix", "vmatrix", "Vmatrix"],
  props: {
    numArgs: 0
  },
  handler: function handler(context) {
    var delimiters = {
      "matrix": null,
      "pmatrix": ["(", ")"],
      "bmatrix": ["[", "]"],
      "Bmatrix": ["\\{", "\\}"],
      "vmatrix": ["|", "|"],
      "Vmatrix": ["\\Vert", "\\Vert"]
    }[context.envName]; // \hskip -\arraycolsep in amsmath

    var payload = {
      hskipBeforeAndAfter: false
    };
    var res = parseArray(context.parser, payload, dCellStyle(context.envName));
    return delimiters ? {
      type: "leftright",
      mode: context.mode,
      body: [res],
      left: delimiters[0],
      right: delimiters[1]
    } : res;
  },
  htmlBuilder: array_htmlBuilder,
  mathmlBuilder: array_mathmlBuilder
}); // A cases environment (in amsmath.sty) is almost equivalent to
// \def\arraystretch{1.2}%
// \left\{\begin{array}{@{}l@{\quad}l@{}} … \end{array}\right.
// {dcases} is a {cases} environment where cells are set in \displaystyle,
// as defined in mathtools.sty.

defineEnvironment({
  type: "array",
  names: ["cases", "dcases"],
  props: {
    numArgs: 0
  },
  handler: function handler(context) {
    var payload = {
      arraystretch: 1.2,
      cols: [{
        type: "align",
        align: "l",
        pregap: 0,
        // TODO(kevinb) get the current style.
        // For now we use the metrics for TEXT style which is what we were
        // doing before.  Before attempting to get the current style we
        // should look at TeX's behavior especially for \over and matrices.
        postgap: 1.0
        /* 1em quad */

      }, {
        type: "align",
        align: "l",
        pregap: 0,
        postgap: 0
      }]
    };
    var res = parseArray(context.parser, payload, dCellStyle(context.envName));
    return {
      type: "leftright",
      mode: context.mode,
      body: [res],
      left: "\\{",
      right: "."
    };
  },
  htmlBuilder: array_htmlBuilder,
  mathmlBuilder: array_mathmlBuilder
}); // An aligned environment is like the align* environment
// except it operates within math mode.
// Note that we assume \nomallineskiplimit to be zero,
// so that \strut@ is the same as \strut.

defineEnvironment({
  type: "array",
  names: ["aligned"],
  props: {
    numArgs: 0
  },
  handler: array_alignedHandler,
  htmlBuilder: array_htmlBuilder,
  mathmlBuilder: array_mathmlBuilder
}); // A gathered environment is like an array environment with one centered
// column, but where rows are considered lines so get \jot line spacing
// and contents are set in \displaystyle.

defineEnvironment({
  type: "array",
  names: ["gathered"],
  props: {
    numArgs: 0
  },
  handler: function handler(context) {
    var res = {
      cols: [{
        type: "align",
        align: "c"
      }],
      addJot: true
    };
    return parseArray(context.parser, res, "display");
  },
  htmlBuilder: array_htmlBuilder,
  mathmlBuilder: array_mathmlBuilder
}); // alignat environment is like an align environment, but one must explicitly
// specify maximum number of columns in each row, and can adjust spacing between
// each columns.

defineEnvironment({
  type: "array",
  names: ["alignedat"],
  // One for numbered and for unnumbered;
  // but, KaTeX doesn't supports math numbering yet,
  // they make no difference for now.
  props: {
    numArgs: 1
  },
  handler: array_alignedHandler,
  htmlBuilder: array_htmlBuilder,
  mathmlBuilder: array_mathmlBuilder
}); // Catch \hline outside array environment

defineFunction({
  type: "text",
  // Doesn't matter what this is.
  names: ["\\hline", "\\hdashline"],
  props: {
    numArgs: 0,
    allowedInText: true,
    allowedInMath: true
  },
  handler: function handler(context, args) {
    throw new src_ParseError(context.funcName + " valid only within array environment");
  }
});
// CONCATENATED MODULE: ./src/environments.js

var environments = _environments;
/* harmony default export */ var src_environments = (environments); // All environment definitions should be imported below


// CONCATENATED MODULE: ./src/functions/environment.js



 // Environment delimiters. HTML/MathML rendering is defined in the corresponding
// defineEnvironment definitions.
// $FlowFixMe, "environment" handler returns an environment ParseNode

defineFunction({
  type: "environment",
  names: ["\\begin", "\\end"],
  props: {
    numArgs: 1,
    argTypes: ["text"]
  },
  handler: function handler(_ref, args) {
    var parser = _ref.parser,
        funcName = _ref.funcName;
    var nameGroup = args[0];

    if (nameGroup.type !== "ordgroup") {
      throw new src_ParseError("Invalid environment name", nameGroup);
    }

    var envName = "";

    for (var i = 0; i < nameGroup.body.length; ++i) {
      envName += assertNodeType(nameGroup.body[i], "textord").text;
    }

    if (funcName === "\\begin") {
      // begin...end is similar to left...right
      if (!src_environments.hasOwnProperty(envName)) {
        throw new src_ParseError("No such environment: " + envName, nameGroup);
      } // Build the environment object. Arguments and other information will
      // be made available to the begin and end methods using properties.


      var env = src_environments[envName];

      var _parser$parseArgument = parser.parseArguments("\\begin{" + envName + "}", env),
          _args = _parser$parseArgument.args,
          optArgs = _parser$parseArgument.optArgs;

      var context = {
        mode: parser.mode,
        envName: envName,
        parser: parser
      };
      var result = env.handler(context, _args, optArgs);
      parser.expect("\\end", false);
      var endNameToken = parser.nextToken;
      var end = assertNodeType(parser.parseFunction(), "environment");

      if (end.name !== envName) {
        throw new src_ParseError("Mismatch: \\begin{" + envName + "} matched by \\end{" + end.name + "}", endNameToken);
      }

      return result;
    }

    return {
      type: "environment",
      mode: parser.mode,
      name: envName,
      nameGroup: nameGroup
    };
  }
});
// CONCATENATED MODULE: ./src/functions/mclass.js





var mclass_makeSpan = buildCommon.makeSpan;

function mclass_htmlBuilder(group, options) {
  var elements = buildHTML_buildExpression(group.body, options, true);
  return mclass_makeSpan([group.mclass], elements, options);
}

function mclass_mathmlBuilder(group, options) {
  var inner = buildMathML_buildExpression(group.body, options);
  return mathMLTree.newDocumentFragment(inner);
} // Math class commands except \mathop


defineFunction({
  type: "mclass",
  names: ["\\mathord", "\\mathbin", "\\mathrel", "\\mathopen", "\\mathclose", "\\mathpunct", "\\mathinner"],
  props: {
    numArgs: 1
  },
  handler: function handler(_ref, args) {
    var parser = _ref.parser,
        funcName = _ref.funcName;
    var body = args[0];
    return {
      type: "mclass",
      mode: parser.mode,
      mclass: "m" + funcName.substr(5),
      body: defineFunction_ordargument(body)
    };
  },
  htmlBuilder: mclass_htmlBuilder,
  mathmlBuilder: mclass_mathmlBuilder
});
var binrelClass = function binrelClass(arg) {
  // \binrel@ spacing varies with (bin|rel|ord) of the atom in the argument.
  // (by rendering separately and with {}s before and after, and measuring
  // the change in spacing).  We'll do roughly the same by detecting the
  // atom type directly.
  var atom = arg.type === "ordgroup" && arg.body.length ? arg.body[0] : arg;

  if (atom.type === "atom" && (atom.family === "bin" || atom.family === "rel")) {
    return "m" + atom.family;
  } else {
    return "mord";
  }
}; // \@binrel{x}{y} renders like y but as mbin/mrel/mord if x is mbin/mrel/mord.
// This is equivalent to \binrel@{x}\binrel@@{y} in AMSTeX.

defineFunction({
  type: "mclass",
  names: ["\\@binrel"],
  props: {
    numArgs: 2
  },
  handler: function handler(_ref2, args) {
    var parser = _ref2.parser;
    return {
      type: "mclass",
      mode: parser.mode,
      mclass: binrelClass(args[0]),
      body: [args[1]]
    };
  }
}); // Build a relation or stacked op by placing one symbol on top of another

defineFunction({
  type: "mclass",
  names: ["\\stackrel", "\\overset", "\\underset"],
  props: {
    numArgs: 2
  },
  handler: function handler(_ref3, args) {
    var parser = _ref3.parser,
        funcName = _ref3.funcName;
    var baseArg = args[1];
    var shiftedArg = args[0];
    var mclass;

    if (funcName !== "\\stackrel") {
      // LaTeX applies \binrel spacing to \overset and \underset.
      mclass = binrelClass(baseArg);
    } else {
      mclass = "mrel"; // for \stackrel
    }

    var baseOp = {
      type: "op",
      mode: baseArg.mode,
      limits: true,
      alwaysHandleSupSub: true,
      symbol: false,
      suppressBaseShift: funcName !== "\\stackrel",
      body: defineFunction_ordargument(baseArg)
    };
    var supsub = {
      type: "supsub",
      mode: shiftedArg.mode,
      base: baseOp,
      sup: funcName === "\\underset" ? null : shiftedArg,
      sub: funcName === "\\underset" ? shiftedArg : null
    };
    return {
      type: "mclass",
      mode: parser.mode,
      mclass: mclass,
      body: [supsub]
    };
  },
  htmlBuilder: mclass_htmlBuilder,
  mathmlBuilder: mclass_mathmlBuilder
});
// CONCATENATED MODULE: ./src/functions/font.js
// TODO(kevinb): implement \\sl and \\sc





var font_htmlBuilder = function htmlBuilder(group, options) {
  var font = group.font;
  var newOptions = options.withFont(font);
  return buildHTML_buildGroup(group.body, newOptions);
};

var font_mathmlBuilder = function mathmlBuilder(group, options) {
  var font = group.font;
  var newOptions = options.withFont(font);
  return buildMathML_buildGroup(group.body, newOptions);
};

var fontAliases = {
  "\\Bbb": "\\mathbb",
  "\\bold": "\\mathbf",
  "\\frak": "\\mathfrak",
  "\\bm": "\\boldsymbol"
};
defineFunction({
  type: "font",
  names: [// styles, except \boldsymbol defined below
  "\\mathrm", "\\mathit", "\\mathbf", "\\mathnormal", // families
  "\\mathbb", "\\mathcal", "\\mathfrak", "\\mathscr", "\\mathsf", "\\mathtt", // aliases, except \bm defined below
  "\\Bbb", "\\bold", "\\frak"],
  props: {
    numArgs: 1,
    greediness: 2
  },
  handler: function handler(_ref, args) {
    var parser = _ref.parser,
        funcName = _ref.funcName;
    var body = args[0];
    var func = funcName;

    if (func in fontAliases) {
      func = fontAliases[func];
    }

    return {
      type: "font",
      mode: parser.mode,
      font: func.slice(1),
      body: body
    };
  },
  htmlBuilder: font_htmlBuilder,
  mathmlBuilder: font_mathmlBuilder
});
defineFunction({
  type: "mclass",
  names: ["\\boldsymbol", "\\bm"],
  props: {
    numArgs: 1,
    greediness: 2
  },
  handler: function handler(_ref2, args) {
    var parser = _ref2.parser;
    var body = args[0]; // amsbsy.sty's \boldsymbol uses \binrel spacing to inherit the
    // argument's bin|rel|ord status

    return {
      type: "mclass",
      mode: parser.mode,
      mclass: binrelClass(body),
      body: [{
        type: "font",
        mode: parser.mode,
        font: "boldsymbol",
        body: body
      }]
    };
  }
}); // Old font changing functions

defineFunction({
  type: "font",
  names: ["\\rm", "\\sf", "\\tt", "\\bf", "\\it"],
  props: {
    numArgs: 0,
    allowedInText: true
  },
  handler: function handler(_ref3, args) {
    var parser = _ref3.parser,
        funcName = _ref3.funcName,
        breakOnTokenText = _ref3.breakOnTokenText;
    var mode = parser.mode;
    parser.consumeSpaces();
    var body = parser.parseExpression(true, breakOnTokenText);
    var style = "math" + funcName.slice(1);
    return {
      type: "font",
      mode: mode,
      font: style,
      body: {
        type: "ordgroup",
        mode: parser.mode,
        body: body
      }
    };
  },
  htmlBuilder: font_htmlBuilder,
  mathmlBuilder: font_mathmlBuilder
});
// CONCATENATED MODULE: ./src/functions/genfrac.js











var genfrac_htmlBuilder = function htmlBuilder(group, options) {
  // Fractions are handled in the TeXbook on pages 444-445, rules 15(a-e).
  // Figure out what style this fraction should be in based on the
  // function used
  var style = options.style;

  if (group.size === "display") {
    style = src_Style.DISPLAY;
  } else if (group.size === "text" && style.size === src_Style.DISPLAY.size) {
    // We're in a \tfrac but incoming style is displaystyle, so:
    style = src_Style.TEXT;
  } else if (group.size === "script") {
    style = src_Style.SCRIPT;
  } else if (group.size === "scriptscript") {
    style = src_Style.SCRIPTSCRIPT;
  }

  var nstyle = style.fracNum();
  var dstyle = style.fracDen();
  var newOptions;
  newOptions = options.havingStyle(nstyle);
  var numerm = buildHTML_buildGroup(group.numer, newOptions, options);

  if (group.continued) {
    // \cfrac inserts a \strut into the numerator.
    // Get \strut dimensions from TeXbook page 353.
    var hStrut = 8.5 / options.fontMetrics().ptPerEm;
    var dStrut = 3.5 / options.fontMetrics().ptPerEm;
    numerm.height = numerm.height < hStrut ? hStrut : numerm.height;
    numerm.depth = numerm.depth < dStrut ? dStrut : numerm.depth;
  }

  newOptions = options.havingStyle(dstyle);
  var denomm = buildHTML_buildGroup(group.denom, newOptions, options);
  var rule;
  var ruleWidth;
  var ruleSpacing;

  if (group.hasBarLine) {
    if (group.barSize) {
      ruleWidth = units_calculateSize(group.barSize, options);
      rule = buildCommon.makeLineSpan("frac-line", options, ruleWidth);
    } else {
      rule = buildCommon.makeLineSpan("frac-line", options);
    }

    ruleWidth = rule.height;
    ruleSpacing = rule.height;
  } else {
    rule = null;
    ruleWidth = 0;
    ruleSpacing = options.fontMetrics().defaultRuleThickness;
  } // Rule 15b


  var numShift;
  var clearance;
  var denomShift;

  if (style.size === src_Style.DISPLAY.size) {
    numShift = options.fontMetrics().num1;

    if (ruleWidth > 0) {
      clearance = 3 * ruleSpacing;
    } else {
      clearance = 7 * ruleSpacing;
    }

    denomShift = options.fontMetrics().denom1;
  } else {
    if (ruleWidth > 0) {
      numShift = options.fontMetrics().num2;
      clearance = ruleSpacing;
    } else {
      numShift = options.fontMetrics().num3;
      clearance = 3 * ruleSpacing;
    }

    denomShift = options.fontMetrics().denom2;
  }

  var frac;

  if (!rule) {
    // Rule 15c
    var candidateClearance = numShift - numerm.depth - (denomm.height - denomShift);

    if (candidateClearance < clearance) {
      numShift += 0.5 * (clearance - candidateClearance);
      denomShift += 0.5 * (clearance - candidateClearance);
    }

    frac = buildCommon.makeVList({
      positionType: "individualShift",
      children: [{
        type: "elem",
        elem: denomm,
        shift: denomShift
      }, {
        type: "elem",
        elem: numerm,
        shift: -numShift
      }]
    }, options);
  } else {
    // Rule 15d
    var axisHeight = options.fontMetrics().axisHeight;

    if (numShift - numerm.depth - (axisHeight + 0.5 * ruleWidth) < clearance) {
      numShift += clearance - (numShift - numerm.depth - (axisHeight + 0.5 * ruleWidth));
    }

    if (axisHeight - 0.5 * ruleWidth - (denomm.height - denomShift) < clearance) {
      denomShift += clearance - (axisHeight - 0.5 * ruleWidth - (denomm.height - denomShift));
    }

    var midShift = -(axisHeight - 0.5 * ruleWidth);
    frac = buildCommon.makeVList({
      positionType: "individualShift",
      children: [{
        type: "elem",
        elem: denomm,
        shift: denomShift
      }, {
        type: "elem",
        elem: rule,
        shift: midShift
      }, {
        type: "elem",
        elem: numerm,
        shift: -numShift
      }]
    }, options);
  } // Since we manually change the style sometimes (with \dfrac or \tfrac),
  // account for the possible size change here.


  newOptions = options.havingStyle(style);
  frac.height *= newOptions.sizeMultiplier / options.sizeMultiplier;
  frac.depth *= newOptions.sizeMultiplier / options.sizeMultiplier; // Rule 15e

  var delimSize;

  if (style.size === src_Style.DISPLAY.size) {
    delimSize = options.fontMetrics().delim1;
  } else {
    delimSize = options.fontMetrics().delim2;
  }

  var leftDelim;
  var rightDelim;

  if (group.leftDelim == null) {
    leftDelim = makeNullDelimiter(options, ["mopen"]);
  } else {
    leftDelim = delimiter.customSizedDelim(group.leftDelim, delimSize, true, options.havingStyle(style), group.mode, ["mopen"]);
  }

  if (group.continued) {
    rightDelim = buildCommon.makeSpan([]); // zero width for \cfrac
  } else if (group.rightDelim == null) {
    rightDelim = makeNullDelimiter(options, ["mclose"]);
  } else {
    rightDelim = delimiter.customSizedDelim(group.rightDelim, delimSize, true, options.havingStyle(style), group.mode, ["mclose"]);
  }

  return buildCommon.makeSpan(["mord"].concat(newOptions.sizingClasses(options)), [leftDelim, buildCommon.makeSpan(["mfrac"], [frac]), rightDelim], options);
};

var genfrac_mathmlBuilder = function mathmlBuilder(group, options) {
  var node = new mathMLTree.MathNode("mfrac", [buildMathML_buildGroup(group.numer, options), buildMathML_buildGroup(group.denom, options)]);

  if (!group.hasBarLine) {
    node.setAttribute("linethickness", "0px");
  } else if (group.barSize) {
    var ruleWidth = units_calculateSize(group.barSize, options);
    node.setAttribute("linethickness", ruleWidth + "em");
  }

  if (group.leftDelim != null || group.rightDelim != null) {
    var withDelims = [];

    if (group.leftDelim != null) {
      var leftOp = new mathMLTree.MathNode("mo", [new mathMLTree.TextNode(group.leftDelim)]);
      leftOp.setAttribute("fence", "true");
      withDelims.push(leftOp);
    }

    withDelims.push(node);

    if (group.rightDelim != null) {
      var rightOp = new mathMLTree.MathNode("mo", [new mathMLTree.TextNode(group.rightDelim)]);
      rightOp.setAttribute("fence", "true");
      withDelims.push(rightOp);
    }

    return buildMathML_makeRow(withDelims);
  }

  return node;
};

defineFunction({
  type: "genfrac",
  names: ["\\cfrac", "\\dfrac", "\\frac", "\\tfrac", "\\dbinom", "\\binom", "\\tbinom", "\\\\atopfrac", // can’t be entered directly
  "\\\\bracefrac", "\\\\brackfrac"],
  props: {
    numArgs: 2,
    greediness: 2
  },
  handler: function handler(_ref, args) {
    var parser = _ref.parser,
        funcName = _ref.funcName;
    var numer = args[0];
    var denom = args[1];
    var hasBarLine;
    var leftDelim = null;
    var rightDelim = null;
    var size = "auto";

    switch (funcName) {
      case "\\cfrac":
      case "\\dfrac":
      case "\\frac":
      case "\\tfrac":
        hasBarLine = true;
        break;

      case "\\\\atopfrac":
        hasBarLine = false;
        break;

      case "\\dbinom":
      case "\\binom":
      case "\\tbinom":
        hasBarLine = false;
        leftDelim = "(";
        rightDelim = ")";
        break;

      case "\\\\bracefrac":
        hasBarLine = false;
        leftDelim = "\\{";
        rightDelim = "\\}";
        break;

      case "\\\\brackfrac":
        hasBarLine = false;
        leftDelim = "[";
        rightDelim = "]";
        break;

      default:
        throw new Error("Unrecognized genfrac command");
    }

    switch (funcName) {
      case "\\cfrac":
      case "\\dfrac":
      case "\\dbinom":
        size = "display";
        break;

      case "\\tfrac":
      case "\\tbinom":
        size = "text";
        break;
    }

    return {
      type: "genfrac",
      mode: parser.mode,
      continued: funcName === "\\cfrac",
      numer: numer,
      denom: denom,
      hasBarLine: hasBarLine,
      leftDelim: leftDelim,
      rightDelim: rightDelim,
      size: size,
      barSize: null
    };
  },
  htmlBuilder: genfrac_htmlBuilder,
  mathmlBuilder: genfrac_mathmlBuilder
}); // Infix generalized fractions -- these are not rendered directly, but replaced
// immediately by one of the variants above.

defineFunction({
  type: "infix",
  names: ["\\over", "\\choose", "\\atop", "\\brace", "\\brack"],
  props: {
    numArgs: 0,
    infix: true
  },
  handler: function handler(_ref2) {
    var parser = _ref2.parser,
        funcName = _ref2.funcName,
        token = _ref2.token;
    var replaceWith;

    switch (funcName) {
      case "\\over":
        replaceWith = "\\frac";
        break;

      case "\\choose":
        replaceWith = "\\binom";
        break;

      case "\\atop":
        replaceWith = "\\\\atopfrac";
        break;

      case "\\brace":
        replaceWith = "\\\\bracefrac";
        break;

      case "\\brack":
        replaceWith = "\\\\brackfrac";
        break;

      default:
        throw new Error("Unrecognized infix genfrac command");
    }

    return {
      type: "infix",
      mode: parser.mode,
      replaceWith: replaceWith,
      token: token
    };
  }
});
var stylArray = ["display", "text", "script", "scriptscript"];

var delimFromValue = function delimFromValue(delimString) {
  var delim = null;

  if (delimString.length > 0) {
    delim = delimString;
    delim = delim === "." ? null : delim;
  }

  return delim;
};

defineFunction({
  type: "genfrac",
  names: ["\\genfrac"],
  props: {
    numArgs: 6,
    greediness: 6,
    argTypes: ["math", "math", "size", "text", "math", "math"]
  },
  handler: function handler(_ref3, args) {
    var parser = _ref3.parser;
    var numer = args[4];
    var denom = args[5]; // Look into the parse nodes to get the desired delimiters.

    var leftNode = checkNodeType(args[0], "ordgroup");

    if (leftNode) {
      leftNode = assertAtomFamily(leftNode.body[0], "open");
    } else {
      leftNode = assertAtomFamily(args[0], "open");
    }

    var leftDelim = delimFromValue(leftNode.text);
    var rightNode = checkNodeType(args[1], "ordgroup");

    if (rightNode) {
      rightNode = assertAtomFamily(rightNode.body[0], "close");
    } else {
      rightNode = assertAtomFamily(args[1], "close");
    }

    var rightDelim = delimFromValue(rightNode.text);
    var barNode = assertNodeType(args[2], "size");
    var hasBarLine;
    var barSize = null;

    if (barNode.isBlank) {
      // \genfrac acts differently than \above.
      // \genfrac treats an empty size group as a signal to use a
      // standard bar size. \above would see size = 0 and omit the bar.
      hasBarLine = true;
    } else {
      barSize = barNode.value;
      hasBarLine = barSize.number > 0;
    } // Find out if we want displaystyle, textstyle, etc.


    var size = "auto";
    var styl = checkNodeType(args[3], "ordgroup");

    if (styl) {
      if (styl.body.length > 0) {
        var textOrd = assertNodeType(styl.body[0], "textord");
        size = stylArray[Number(textOrd.text)];
      }
    } else {
      styl = assertNodeType(args[3], "textord");
      size = stylArray[Number(styl.text)];
    }

    return {
      type: "genfrac",
      mode: parser.mode,
      numer: numer,
      denom: denom,
      continued: false,
      hasBarLine: hasBarLine,
      barSize: barSize,
      leftDelim: leftDelim,
      rightDelim: rightDelim,
      size: size
    };
  },
  htmlBuilder: genfrac_htmlBuilder,
  mathmlBuilder: genfrac_mathmlBuilder
}); // \above is an infix fraction that also defines a fraction bar size.

defineFunction({
  type: "infix",
  names: ["\\above"],
  props: {
    numArgs: 1,
    argTypes: ["size"],
    infix: true
  },
  handler: function handler(_ref4, args) {
    var parser = _ref4.parser,
        funcName = _ref4.funcName,
        token = _ref4.token;
    return {
      type: "infix",
      mode: parser.mode,
      replaceWith: "\\\\abovefrac",
      size: assertNodeType(args[0], "size").value,
      token: token
    };
  }
});
defineFunction({
  type: "genfrac",
  names: ["\\\\abovefrac"],
  props: {
    numArgs: 3,
    argTypes: ["math", "size", "math"]
  },
  handler: function handler(_ref5, args) {
    var parser = _ref5.parser;
    var numer = args[0];
    var barSize = assert(assertNodeType(args[1], "infix").size);
    var denom = args[2];
    var hasBarLine = barSize.number > 0;
    return {
      type: "genfrac",
      mode: parser.mode,
      numer: numer,
      denom: denom,
      continued: false,
      hasBarLine: hasBarLine,
      barSize: barSize,
      leftDelim: null,
      rightDelim: null,
      size: "auto"
    };
  },
  htmlBuilder: genfrac_htmlBuilder,
  mathmlBuilder: genfrac_mathmlBuilder
});
// CONCATENATED MODULE: ./src/functions/horizBrace.js








// NOTE: Unlike most `htmlBuilder`s, this one handles not only "horizBrace", but
var horizBrace_htmlBuilder = function htmlBuilder(grp, options) {
  var style = options.style; // Pull out the `ParseNode<"horizBrace">` if `grp` is a "supsub" node.

  var supSubGroup;
  var group;
  var supSub = checkNodeType(grp, "supsub");

  if (supSub) {
    // Ref: LaTeX source2e: }}}}\limits}
    // i.e. LaTeX treats the brace similar to an op and passes it
    // with \limits, so we need to assign supsub style.
    supSubGroup = supSub.sup ? buildHTML_buildGroup(supSub.sup, options.havingStyle(style.sup()), options) : buildHTML_buildGroup(supSub.sub, options.havingStyle(style.sub()), options);
    group = assertNodeType(supSub.base, "horizBrace");
  } else {
    group = assertNodeType(grp, "horizBrace");
  } // Build the base group


  var body = buildHTML_buildGroup(group.base, options.havingBaseStyle(src_Style.DISPLAY)); // Create the stretchy element

  var braceBody = stretchy.svgSpan(group, options); // Generate the vlist, with the appropriate kerns        ┏━━━━━━━━┓
  // This first vlist contains the content and the brace:   equation

  var vlist;

  if (group.isOver) {
    vlist = buildCommon.makeVList({
      positionType: "firstBaseline",
      children: [{
        type: "elem",
        elem: body
      }, {
        type: "kern",
        size: 0.1
      }, {
        type: "elem",
        elem: braceBody
      }]
    }, options); // $FlowFixMe: Replace this with passing "svg-align" into makeVList.

    vlist.children[0].children[0].children[1].classes.push("svg-align");
  } else {
    vlist = buildCommon.makeVList({
      positionType: "bottom",
      positionData: body.depth + 0.1 + braceBody.height,
      children: [{
        type: "elem",
        elem: braceBody
      }, {
        type: "kern",
        size: 0.1
      }, {
        type: "elem",
        elem: body
      }]
    }, options); // $FlowFixMe: Replace this with passing "svg-align" into makeVList.

    vlist.children[0].children[0].children[0].classes.push("svg-align");
  }

  if (supSubGroup) {
    // To write the supsub, wrap the first vlist in another vlist:
    // They can't all go in the same vlist, because the note might be
    // wider than the equation. We want the equation to control the
    // brace width.
    //      note          long note           long note
    //   ┏━━━━━━━━┓   or    ┏━━━┓     not    ┏━━━━━━━━━┓
    //    equation           eqn                 eqn
    var vSpan = buildCommon.makeSpan(["mord", group.isOver ? "mover" : "munder"], [vlist], options);

    if (group.isOver) {
      vlist = buildCommon.makeVList({
        positionType: "firstBaseline",
        children: [{
          type: "elem",
          elem: vSpan
        }, {
          type: "kern",
          size: 0.2
        }, {
          type: "elem",
          elem: supSubGroup
        }]
      }, options);
    } else {
      vlist = buildCommon.makeVList({
        positionType: "bottom",
        positionData: vSpan.depth + 0.2 + supSubGroup.height + supSubGroup.depth,
        children: [{
          type: "elem",
          elem: supSubGroup
        }, {
          type: "kern",
          size: 0.2
        }, {
          type: "elem",
          elem: vSpan
        }]
      }, options);
    }
  }

  return buildCommon.makeSpan(["mord", group.isOver ? "mover" : "munder"], [vlist], options);
};

var horizBrace_mathmlBuilder = function mathmlBuilder(group, options) {
  var accentNode = stretchy.mathMLnode(group.label);
  return new mathMLTree.MathNode(group.isOver ? "mover" : "munder", [buildMathML_buildGroup(group.base, options), accentNode]);
}; // Horizontal stretchy braces


defineFunction({
  type: "horizBrace",
  names: ["\\overbrace", "\\underbrace"],
  props: {
    numArgs: 1
  },
  handler: function handler(_ref, args) {
    var parser = _ref.parser,
        funcName = _ref.funcName;
    return {
      type: "horizBrace",
      mode: parser.mode,
      label: funcName,
      isOver: /^\\over/.test(funcName),
      base: args[0]
    };
  },
  htmlBuilder: horizBrace_htmlBuilder,
  mathmlBuilder: horizBrace_mathmlBuilder
});
// CONCATENATED MODULE: ./src/functions/href.js






defineFunction({
  type: "href",
  names: ["\\href"],
  props: {
    numArgs: 2,
    argTypes: ["url", "original"],
    allowedInText: true
  },
  handler: function handler(_ref, args) {
    var parser = _ref.parser;
    var body = args[1];
    var href = assertNodeType(args[0], "url").url;
    return {
      type: "href",
      mode: parser.mode,
      href: href,
      body: defineFunction_ordargument(body)
    };
  },
  htmlBuilder: function htmlBuilder(group, options) {
    var elements = buildHTML_buildExpression(group.body, options, false);
    return buildCommon.makeAnchor(group.href, [], elements, options);
  },
  mathmlBuilder: function mathmlBuilder(group, options) {
    var math = buildExpressionRow(group.body, options);

    if (!(math instanceof mathMLTree_MathNode)) {
      math = new mathMLTree_MathNode("mrow", [math]);
    }

    math.setAttribute("href", group.href);
    return math;
  }
});
defineFunction({
  type: "href",
  names: ["\\url"],
  props: {
    numArgs: 1,
    argTypes: ["url"],
    allowedInText: true
  },
  handler: function handler(_ref2, args) {
    var parser = _ref2.parser;
    var href = assertNodeType(args[0], "url").url;
    var chars = [];

    for (var i = 0; i < href.length; i++) {
      var c = href[i];

      if (c === "~") {
        c = "\\textasciitilde";
      }

      chars.push({
        type: "textord",
        mode: "text",
        text: c
      });
    }

    var body = {
      type: "text",
      mode: parser.mode,
      font: "\\texttt",
      body: chars
    };
    return {
      type: "href",
      mode: parser.mode,
      href: href,
      body: defineFunction_ordargument(body)
    };
  }
});
// CONCATENATED MODULE: ./src/functions/htmlmathml.js




defineFunction({
  type: "htmlmathml",
  names: ["\\html@mathml"],
  props: {
    numArgs: 2,
    allowedInText: true
  },
  handler: function handler(_ref, args) {
    var parser = _ref.parser;
    return {
      type: "htmlmathml",
      mode: parser.mode,
      html: defineFunction_ordargument(args[0]),
      mathml: defineFunction_ordargument(args[1])
    };
  },
  htmlBuilder: function htmlBuilder(group, options) {
    var elements = buildHTML_buildExpression(group.html, options, false);
    return buildCommon.makeFragment(elements);
  },
  mathmlBuilder: function mathmlBuilder(group, options) {
    return buildExpressionRow(group.mathml, options);
  }
});
// CONCATENATED MODULE: ./src/functions/kern.js
// Horizontal spacing commands




 // TODO: \hskip and \mskip should support plus and minus in lengths

defineFunction({
  type: "kern",
  names: ["\\kern", "\\mkern", "\\hskip", "\\mskip"],
  props: {
    numArgs: 1,
    argTypes: ["size"],
    allowedInText: true
  },
  handler: function handler(_ref, args) {
    var parser = _ref.parser,
        funcName = _ref.funcName;
    var size = assertNodeType(args[0], "size");

    if (parser.settings.strict) {
      var mathFunction = funcName[1] === 'm'; // \mkern, \mskip

      var muUnit = size.value.unit === 'mu';

      if (mathFunction) {
        if (!muUnit) {
          parser.settings.reportNonstrict("mathVsTextUnits", "LaTeX's " + funcName + " supports only mu units, " + ("not " + size.value.unit + " units"));
        }

        if (parser.mode !== "math") {
          parser.settings.reportNonstrict("mathVsTextUnits", "LaTeX's " + funcName + " works only in math mode");
        }
      } else {
        // !mathFunction
        if (muUnit) {
          parser.settings.reportNonstrict("mathVsTextUnits", "LaTeX's " + funcName + " doesn't support mu units");
        }
      }
    }

    return {
      type: "kern",
      mode: parser.mode,
      dimension: size.value
    };
  },
  htmlBuilder: function htmlBuilder(group, options) {
    return buildCommon.makeGlue(group.dimension, options);
  },
  mathmlBuilder: function mathmlBuilder(group, options) {
    var dimension = units_calculateSize(group.dimension, options);
    return new mathMLTree.SpaceNode(dimension);
  }
});
// CONCATENATED MODULE: ./src/functions/lap.js
// Horizontal overlap functions





defineFunction({
  type: "lap",
  names: ["\\mathllap", "\\mathrlap", "\\mathclap"],
  props: {
    numArgs: 1,
    allowedInText: true
  },
  handler: function handler(_ref, args) {
    var parser = _ref.parser,
        funcName = _ref.funcName;
    var body = args[0];
    return {
      type: "lap",
      mode: parser.mode,
      alignment: funcName.slice(5),
      body: body
    };
  },
  htmlBuilder: function htmlBuilder(group, options) {
    // mathllap, mathrlap, mathclap
    var inner;

    if (group.alignment === "clap") {
      // ref: https://www.math.lsu.edu/~aperlis/publications/mathclap/
      inner = buildCommon.makeSpan([], [buildHTML_buildGroup(group.body, options)]); // wrap, since CSS will center a .clap > .inner > span

      inner = buildCommon.makeSpan(["inner"], [inner], options);
    } else {
      inner = buildCommon.makeSpan(["inner"], [buildHTML_buildGroup(group.body, options)]);
    }

    var fix = buildCommon.makeSpan(["fix"], []);
    var node = buildCommon.makeSpan([group.alignment], [inner, fix], options); // At this point, we have correctly set horizontal alignment of the
    // two items involved in the lap.
    // Next, use a strut to set the height of the HTML bounding box.
    // Otherwise, a tall argument may be misplaced.

    var strut = buildCommon.makeSpan(["strut"]);
    strut.style.height = node.height + node.depth + "em";
    strut.style.verticalAlign = -node.depth + "em";
    node.children.unshift(strut); // Next, prevent vertical misplacement when next to something tall.

    node = buildCommon.makeVList({
      positionType: "firstBaseline",
      children: [{
        type: "elem",
        elem: node
      }]
    }, options); // Get the horizontal spacing correct relative to adjacent items.

    return buildCommon.makeSpan(["mord"], [node], options);
  },
  mathmlBuilder: function mathmlBuilder(group, options) {
    // mathllap, mathrlap, mathclap
    var node = new mathMLTree.MathNode("mpadded", [buildMathML_buildGroup(group.body, options)]);

    if (group.alignment !== "rlap") {
      var offset = group.alignment === "llap" ? "-1" : "-0.5";
      node.setAttribute("lspace", offset + "width");
    }

    node.setAttribute("width", "0px");
    return node;
  }
});
// CONCATENATED MODULE: ./src/functions/math.js

 // Switching from text mode back to math mode

defineFunction({
  type: "styling",
  names: ["\\(", "$"],
  props: {
    numArgs: 0,
    allowedInText: true,
    allowedInMath: false,
    consumeMode: "math"
  },
  handler: function handler(_ref, args) {
    var funcName = _ref.funcName,
        parser = _ref.parser;
    var outerMode = parser.mode;
    parser.switchMode("math");
    var close = funcName === "\\(" ? "\\)" : "$";
    var body = parser.parseExpression(false, close); // We can't expand the next symbol after the closing $ until after
    // switching modes back.  So don't consume within expect.

    parser.expect(close, false);
    parser.switchMode(outerMode);
    parser.consume();
    return {
      type: "styling",
      mode: parser.mode,
      style: "text",
      body: body
    };
  }
}); // Check for extra closing math delimiters

defineFunction({
  type: "text",
  // Doesn't matter what this is.
  names: ["\\)", "\\]"],
  props: {
    numArgs: 0,
    allowedInText: true,
    allowedInMath: false
  },
  handler: function handler(context, args) {
    throw new src_ParseError("Mismatched " + context.funcName);
  }
});
// CONCATENATED MODULE: ./src/functions/mathchoice.js






var mathchoice_chooseMathStyle = function chooseMathStyle(group, options) {
  switch (options.style.size) {
    case src_Style.DISPLAY.size:
      return group.display;

    case src_Style.TEXT.size:
      return group.text;

    case src_Style.SCRIPT.size:
      return group.script;

    case src_Style.SCRIPTSCRIPT.size:
      return group.scriptscript;

    default:
      return group.text;
  }
};

defineFunction({
  type: "mathchoice",
  names: ["\\mathchoice"],
  props: {
    numArgs: 4
  },
  handler: function handler(_ref, args) {
    var parser = _ref.parser;
    return {
      type: "mathchoice",
      mode: parser.mode,
      display: defineFunction_ordargument(args[0]),
      text: defineFunction_ordargument(args[1]),
      script: defineFunction_ordargument(args[2]),
      scriptscript: defineFunction_ordargument(args[3])
    };
  },
  htmlBuilder: function htmlBuilder(group, options) {
    var body = mathchoice_chooseMathStyle(group, options);
    var elements = buildHTML_buildExpression(body, options, false);
    return buildCommon.makeFragment(elements);
  },
  mathmlBuilder: function mathmlBuilder(group, options) {
    var body = mathchoice_chooseMathStyle(group, options);
    return buildExpressionRow(body, options);
  }
});
// CONCATENATED MODULE: ./src/functions/op.js
// Limits, symbols









// NOTE: Unlike most `htmlBuilder`s, this one handles not only "op", but also
var op_htmlBuilder = function htmlBuilder(grp, options) {
  // Operators are handled in the TeXbook pg. 443-444, rule 13(a).
  var supGroup;
  var subGroup;
  var hasLimits = false;
  var group;
  var supSub = checkNodeType(grp, "supsub");

  if (supSub) {
    // If we have limits, supsub will pass us its group to handle. Pull
    // out the superscript and subscript and set the group to the op in
    // its base.
    supGroup = supSub.sup;
    subGroup = supSub.sub;
    group = assertNodeType(supSub.base, "op");
    hasLimits = true;
  } else {
    group = assertNodeType(grp, "op");
  }

  var style = options.style; // Most operators have a large successor symbol, but these don't.

  var noSuccessor = ["\\smallint"];
  var large = false;

  if (style.size === src_Style.DISPLAY.size && group.symbol && !utils.contains(noSuccessor, group.name)) {
    // Most symbol operators get larger in displaystyle (rule 13)
    large = true;
  }

  var base;

  if (group.symbol) {
    // If this is a symbol, create the symbol.
    var fontName = large ? "Size2-Regular" : "Size1-Regular";
    var stash = "";

    if (group.name === "\\oiint" || group.name === "\\oiiint") {
      // No font glyphs yet, so use a glyph w/o the oval.
      // TODO: When font glyphs are available, delete this code.
      stash = group.name.substr(1); // $FlowFixMe

      group.name = stash === "oiint" ? "\\iint" : "\\iiint";
    }

    base = buildCommon.makeSymbol(group.name, fontName, "math", options, ["mop", "op-symbol", large ? "large-op" : "small-op"]);

    if (stash.length > 0) {
      // We're in \oiint or \oiiint. Overlay the oval.
      // TODO: When font glyphs are available, delete this code.
      var italic = base.italic;
      var oval = buildCommon.staticSvg(stash + "Size" + (large ? "2" : "1"), options);
      base = buildCommon.makeVList({
        positionType: "individualShift",
        children: [{
          type: "elem",
          elem: base,
          shift: 0
        }, {
          type: "elem",
          elem: oval,
          shift: large ? 0.08 : 0
        }]
      }, options); // $FlowFixMe

      group.name = "\\" + stash;
      base.classes.unshift("mop"); // $FlowFixMe

      base.italic = italic;
    }
  } else if (group.body) {
    // If this is a list, compose that list.
    var inner = buildHTML_buildExpression(group.body, options, true);

    if (inner.length === 1 && inner[0] instanceof domTree_SymbolNode) {
      base = inner[0];
      base.classes[0] = "mop"; // replace old mclass
    } else {
      base = buildCommon.makeSpan(["mop"], buildCommon.tryCombineChars(inner), options);
    }
  } else {
    // Otherwise, this is a text operator. Build the text from the
    // operator's name.
    // TODO(emily): Add a space in the middle of some of these
    // operators, like \limsup
    var output = [];

    for (var i = 1; i < group.name.length; i++) {
      output.push(buildCommon.mathsym(group.name[i], group.mode));
    }

    base = buildCommon.makeSpan(["mop"], output, options);
  } // If content of op is a single symbol, shift it vertically.


  var baseShift = 0;
  var slant = 0;

  if ((base instanceof domTree_SymbolNode || group.name === "\\oiint" || group.name === "\\oiiint") && !group.suppressBaseShift) {
    // We suppress the shift of the base of \overset and \underset. Otherwise,
    // shift the symbol so its center lies on the axis (rule 13). It
    // appears that our fonts have the centers of the symbols already
    // almost on the axis, so these numbers are very small. Note we
    // don't actually apply this here, but instead it is used either in
    // the vlist creation or separately when there are no limits.
    baseShift = (base.height - base.depth) / 2 - options.fontMetrics().axisHeight; // The slant of the symbol is just its italic correction.
    // $FlowFixMe

    slant = base.italic;
  }

  if (hasLimits) {
    // IE 8 clips \int if it is in a display: inline-block. We wrap it
    // in a new span so it is an inline, and works.
    base = buildCommon.makeSpan([], [base]);
    var sub;
    var sup; // We manually have to handle the superscripts and subscripts. This,
    // aside from the kern calculations, is copied from supsub.

    if (supGroup) {
      var elem = buildHTML_buildGroup(supGroup, options.havingStyle(style.sup()), options);
      sup = {
        elem: elem,
        kern: Math.max(options.fontMetrics().bigOpSpacing1, options.fontMetrics().bigOpSpacing3 - elem.depth)
      };
    }

    if (subGroup) {
      var _elem = buildHTML_buildGroup(subGroup, options.havingStyle(style.sub()), options);

      sub = {
        elem: _elem,
        kern: Math.max(options.fontMetrics().bigOpSpacing2, options.fontMetrics().bigOpSpacing4 - _elem.height)
      };
    } // Build the final group as a vlist of the possible subscript, base,
    // and possible superscript.


    var finalGroup;

    if (sup && sub) {
      var bottom = options.fontMetrics().bigOpSpacing5 + sub.elem.height + sub.elem.depth + sub.kern + base.depth + baseShift;
      finalGroup = buildCommon.makeVList({
        positionType: "bottom",
        positionData: bottom,
        children: [{
          type: "kern",
          size: options.fontMetrics().bigOpSpacing5
        }, {
          type: "elem",
          elem: sub.elem,
          marginLeft: -slant + "em"
        }, {
          type: "kern",
          size: sub.kern
        }, {
          type: "elem",
          elem: base
        }, {
          type: "kern",
          size: sup.kern
        }, {
          type: "elem",
          elem: sup.elem,
          marginLeft: slant + "em"
        }, {
          type: "kern",
          size: options.fontMetrics().bigOpSpacing5
        }]
      }, options);
    } else if (sub) {
      var top = base.height - baseShift; // Shift the limits by the slant of the symbol. Note
      // that we are supposed to shift the limits by 1/2 of the slant,
      // but since we are centering the limits adding a full slant of
      // margin will shift by 1/2 that.

      finalGroup = buildCommon.makeVList({
        positionType: "top",
        positionData: top,
        children: [{
          type: "kern",
          size: options.fontMetrics().bigOpSpacing5
        }, {
          type: "elem",
          elem: sub.elem,
          marginLeft: -slant + "em"
        }, {
          type: "kern",
          size: sub.kern
        }, {
          type: "elem",
          elem: base
        }]
      }, options);
    } else if (sup) {
      var _bottom = base.depth + baseShift;

      finalGroup = buildCommon.makeVList({
        positionType: "bottom",
        positionData: _bottom,
        children: [{
          type: "elem",
          elem: base
        }, {
          type: "kern",
          size: sup.kern
        }, {
          type: "elem",
          elem: sup.elem,
          marginLeft: slant + "em"
        }, {
          type: "kern",
          size: options.fontMetrics().bigOpSpacing5
        }]
      }, options);
    } else {
      // This case probably shouldn't occur (this would mean the
      // supsub was sending us a group with no superscript or
      // subscript) but be safe.
      return base;
    }

    return buildCommon.makeSpan(["mop", "op-limits"], [finalGroup], options);
  } else {
    if (baseShift) {
      base.style.position = "relative";
      base.style.top = baseShift + "em";
    }

    return base;
  }
};

var op_mathmlBuilder = function mathmlBuilder(group, options) {
  var node; // TODO(emily): handle big operators using the `largeop` attribute

  if (group.symbol) {
    // This is a symbol. Just add the symbol.
    node = new mathMLTree_MathNode("mo", [buildMathML_makeText(group.name, group.mode)]);
  } else if (group.body) {
    // This is an operator with children. Add them.
    node = new mathMLTree_MathNode("mo", buildMathML_buildExpression(group.body, options));
  } else {
    // This is a text operator. Add all of the characters from the
    // operator's name.
    // TODO(emily): Add a space in the middle of some of these
    // operators, like \limsup.
    node = new mathMLTree_MathNode("mi", [new mathMLTree_TextNode(group.name.slice(1))]); // Append an <mo>&ApplyFunction;</mo>.
    // ref: https://www.w3.org/TR/REC-MathML/chap3_2.html#sec3.2.4

    var operator = new mathMLTree_MathNode("mo", [buildMathML_makeText("\u2061", "text")]);
    return newDocumentFragment([node, operator]);
  }

  return node;
};

var singleCharBigOps = {
  "\u220F": "\\prod",
  "\u2210": "\\coprod",
  "\u2211": "\\sum",
  "\u22C0": "\\bigwedge",
  "\u22C1": "\\bigvee",
  "\u22C2": "\\bigcap",
  "\u22C3": "\\bigcap",
  "\u2A00": "\\bigodot",
  "\u2A01": "\\bigoplus",
  "\u2A02": "\\bigotimes",
  "\u2A04": "\\biguplus",
  "\u2A06": "\\bigsqcup"
};
defineFunction({
  type: "op",
  names: ["\\coprod", "\\bigvee", "\\bigwedge", "\\biguplus", "\\bigcap", "\\bigcup", "\\intop", "\\prod", "\\sum", "\\bigotimes", "\\bigoplus", "\\bigodot", "\\bigsqcup", "\\smallint", "\u220F", "\u2210", "\u2211", "\u22C0", "\u22C1", "\u22C2", "\u22C3", "\u2A00", "\u2A01", "\u2A02", "\u2A04", "\u2A06"],
  props: {
    numArgs: 0
  },
  handler: function handler(_ref, args) {
    var parser = _ref.parser,
        funcName = _ref.funcName;
    var fName = funcName;

    if (fName.length === 1) {
      fName = singleCharBigOps[fName];
    }

    return {
      type: "op",
      mode: parser.mode,
      limits: true,
      symbol: true,
      name: fName
    };
  },
  htmlBuilder: op_htmlBuilder,
  mathmlBuilder: op_mathmlBuilder
}); // Note: calling defineFunction with a type that's already been defined only
// works because the same htmlBuilder and mathmlBuilder are being used.

defineFunction({
  type: "op",
  names: ["\\mathop"],
  props: {
    numArgs: 1
  },
  handler: function handler(_ref2, args) {
    var parser = _ref2.parser;
    var body = args[0];
    return {
      type: "op",
      mode: parser.mode,
      limits: false,
      symbol: false,
      body: defineFunction_ordargument(body)
    };
  },
  htmlBuilder: op_htmlBuilder,
  mathmlBuilder: op_mathmlBuilder
}); // There are 2 flags for operators; whether they produce limits in
// displaystyle, and whether they are symbols and should grow in
// displaystyle. These four groups cover the four possible choices.

var singleCharIntegrals = {
  "\u222B": "\\int",
  "\u222C": "\\iint",
  "\u222D": "\\iiint",
  "\u222E": "\\oint",
  "\u222F": "\\oiint",
  "\u2230": "\\oiiint"
}; // No limits, not symbols

defineFunction({
  type: "op",
  names: ["\\arcsin", "\\arccos", "\\arctan", "\\arctg", "\\arcctg", "\\arg", "\\ch", "\\cos", "\\cosec", "\\cosh", "\\cot", "\\cotg", "\\coth", "\\csc", "\\ctg", "\\cth", "\\deg", "\\dim", "\\exp", "\\hom", "\\ker", "\\lg", "\\ln", "\\log", "\\sec", "\\sin", "\\sinh", "\\sh", "\\tan", "\\tanh", "\\tg", "\\th"],
  props: {
    numArgs: 0
  },
  handler: function handler(_ref3) {
    var parser = _ref3.parser,
        funcName = _ref3.funcName;
    return {
      type: "op",
      mode: parser.mode,
      limits: false,
      symbol: false,
      name: funcName
    };
  },
  htmlBuilder: op_htmlBuilder,
  mathmlBuilder: op_mathmlBuilder
}); // Limits, not symbols

defineFunction({
  type: "op",
  names: ["\\det", "\\gcd", "\\inf", "\\lim", "\\max", "\\min", "\\Pr", "\\sup"],
  props: {
    numArgs: 0
  },
  handler: function handler(_ref4) {
    var parser = _ref4.parser,
        funcName = _ref4.funcName;
    return {
      type: "op",
      mode: parser.mode,
      limits: true,
      symbol: false,
      name: funcName
    };
  },
  htmlBuilder: op_htmlBuilder,
  mathmlBuilder: op_mathmlBuilder
}); // No limits, symbols

defineFunction({
  type: "op",
  names: ["\\int", "\\iint", "\\iiint", "\\oint", "\\oiint", "\\oiiint", "\u222B", "\u222C", "\u222D", "\u222E", "\u222F", "\u2230"],
  props: {
    numArgs: 0
  },
  handler: function handler(_ref5) {
    var parser = _ref5.parser,
        funcName = _ref5.funcName;
    var fName = funcName;

    if (fName.length === 1) {
      fName = singleCharIntegrals[fName];
    }

    return {
      type: "op",
      mode: parser.mode,
      limits: false,
      symbol: true,
      name: fName
    };
  },
  htmlBuilder: op_htmlBuilder,
  mathmlBuilder: op_mathmlBuilder
});
// CONCATENATED MODULE: ./src/functions/operatorname.js





 // \operatorname
// amsopn.dtx: \mathop{#1\kern\z@\operator@font#3}\newmcodes@

defineFunction({
  type: "operatorname",
  names: ["\\operatorname"],
  props: {
    numArgs: 1
  },
  handler: function handler(_ref, args) {
    var parser = _ref.parser;
    var body = args[0];
    return {
      type: "operatorname",
      mode: parser.mode,
      body: defineFunction_ordargument(body)
    };
  },
  htmlBuilder: function htmlBuilder(group, options) {
    if (group.body.length > 0) {
      var body = group.body.map(function (child) {
        // $FlowFixMe: Check if the node has a string `text` property.
        var childText = child.text;

        if (typeof childText === "string") {
          return {
            type: "textord",
            mode: child.mode,
            text: childText
          };
        } else {
          return child;
        }
      }); // Consolidate function names into symbol characters.

      var expression = buildHTML_buildExpression(body, options.withFont("mathrm"), true);

      for (var i = 0; i < expression.length; i++) {
        var child = expression[i];

        if (child instanceof domTree_SymbolNode) {
          // Per amsopn package,
          // change minus to hyphen and \ast to asterisk
          child.text = child.text.replace(/\u2212/, "-").replace(/\u2217/, "*");
        }
      }

      return buildCommon.makeSpan(["mop"], expression, options);
    } else {
      return buildCommon.makeSpan(["mop"], [], options);
    }
  },
  mathmlBuilder: function mathmlBuilder(group, options) {
    // The steps taken here are similar to the html version.
    var expression = buildMathML_buildExpression(group.body, options.withFont("mathrm")); // Is expression a string or has it something like a fraction?

    var isAllString = true; // default

    for (var i = 0; i < expression.length; i++) {
      var node = expression[i];

      if (node instanceof mathMLTree.SpaceNode) {// Do nothing
      } else if (node instanceof mathMLTree.MathNode) {
        switch (node.type) {
          case "mi":
          case "mn":
          case "ms":
          case "mspace":
          case "mtext":
            break;
          // Do nothing yet.

          case "mo":
            {
              var child = node.children[0];

              if (node.children.length === 1 && child instanceof mathMLTree.TextNode) {
                child.text = child.text.replace(/\u2212/, "-").replace(/\u2217/, "*");
              } else {
                isAllString = false;
              }

              break;
            }

          default:
            isAllString = false;
        }
      } else {
        isAllString = false;
      }
    }

    if (isAllString) {
      // Write a single TextNode instead of multiple nested tags.
      var word = expression.map(function (node) {
        return node.toText();
      }).join(""); // word has already been escaped by `node.toText()`

      expression = [new mathMLTree.TextNode(word, false)];
    }

    var identifier = new mathMLTree.MathNode("mi", expression);
    identifier.setAttribute("mathvariant", "normal"); // \u2061 is the same as &ApplyFunction;
    // ref: https://www.w3schools.com/charsets/ref_html_entities_a.asp

    var operator = new mathMLTree.MathNode("mo", [buildMathML_makeText("\u2061", "text")]);
    return mathMLTree.newDocumentFragment([identifier, operator]);
  }
});
// CONCATENATED MODULE: ./src/functions/ordgroup.js




defineFunctionBuilders({
  type: "ordgroup",
  htmlBuilder: function htmlBuilder(group, options) {
    return buildCommon.makeSpan(["mord"], buildHTML_buildExpression(group.body, options, true), options);
  },
  mathmlBuilder: function mathmlBuilder(group, options) {
    return buildExpressionRow(group.body, options);
  }
});
// CONCATENATED MODULE: ./src/functions/overline.js





defineFunction({
  type: "overline",
  names: ["\\overline"],
  props: {
    numArgs: 1
  },
  handler: function handler(_ref, args) {
    var parser = _ref.parser;
    var body = args[0];
    return {
      type: "overline",
      mode: parser.mode,
      body: body
    };
  },
  htmlBuilder: function htmlBuilder(group, options) {
    // Overlines are handled in the TeXbook pg 443, Rule 9.
    // Build the inner group in the cramped style.
    var innerGroup = buildHTML_buildGroup(group.body, options.havingCrampedStyle()); // Create the line above the body

    var line = buildCommon.makeLineSpan("overline-line", options); // Generate the vlist, with the appropriate kerns

    var vlist = buildCommon.makeVList({
      positionType: "firstBaseline",
      children: [{
        type: "elem",
        elem: innerGroup
      }, {
        type: "kern",
        size: 3 * line.height
      }, {
        type: "elem",
        elem: line
      }, {
        type: "kern",
        size: line.height
      }]
    }, options);
    return buildCommon.makeSpan(["mord", "overline"], [vlist], options);
  },
  mathmlBuilder: function mathmlBuilder(group, options) {
    var operator = new mathMLTree.MathNode("mo", [new mathMLTree.TextNode("\u203E")]);
    operator.setAttribute("stretchy", "true");
    var node = new mathMLTree.MathNode("mover", [buildMathML_buildGroup(group.body, options), operator]);
    node.setAttribute("accent", "true");
    return node;
  }
});
// CONCATENATED MODULE: ./src/functions/phantom.js





defineFunction({
  type: "phantom",
  names: ["\\phantom"],
  props: {
    numArgs: 1,
    allowedInText: true
  },
  handler: function handler(_ref, args) {
    var parser = _ref.parser;
    var body = args[0];
    return {
      type: "phantom",
      mode: parser.mode,
      body: defineFunction_ordargument(body)
    };
  },
  htmlBuilder: function htmlBuilder(group, options) {
    var elements = buildHTML_buildExpression(group.body, options.withPhantom(), false); // \phantom isn't supposed to affect the elements it contains.
    // See "color" for more details.

    return buildCommon.makeFragment(elements);
  },
  mathmlBuilder: function mathmlBuilder(group, options) {
    var inner = buildMathML_buildExpression(group.body, options);
    return new mathMLTree.MathNode("mphantom", inner);
  }
});
defineFunction({
  type: "hphantom",
  names: ["\\hphantom"],
  props: {
    numArgs: 1,
    allowedInText: true
  },
  handler: function handler(_ref2, args) {
    var parser = _ref2.parser;
    var body = args[0];
    return {
      type: "hphantom",
      mode: parser.mode,
      body: body
    };
  },
  htmlBuilder: function htmlBuilder(group, options) {
    var node = buildCommon.makeSpan([], [buildHTML_buildGroup(group.body, options.withPhantom())]);
    node.height = 0;
    node.depth = 0;

    if (node.children) {
      for (var i = 0; i < node.children.length; i++) {
        node.children[i].height = 0;
        node.children[i].depth = 0;
      }
    } // See smash for comment re: use of makeVList


    node = buildCommon.makeVList({
      positionType: "firstBaseline",
      children: [{
        type: "elem",
        elem: node
      }]
    }, options);
    return node;
  },
  mathmlBuilder: function mathmlBuilder(group, options) {
    var inner = buildMathML_buildExpression(defineFunction_ordargument(group.body), options);
    var node = new mathMLTree.MathNode("mphantom", inner);
    node.setAttribute("height", "0px");
    return node;
  }
});
defineFunction({
  type: "vphantom",
  names: ["\\vphantom"],
  props: {
    numArgs: 1,
    allowedInText: true
  },
  handler: function handler(_ref3, args) {
    var parser = _ref3.parser;
    var body = args[0];
    return {
      type: "vphantom",
      mode: parser.mode,
      body: body
    };
  },
  htmlBuilder: function htmlBuilder(group, options) {
    var inner = buildCommon.makeSpan(["inner"], [buildHTML_buildGroup(group.body, options.withPhantom())]);
    var fix = buildCommon.makeSpan(["fix"], []);
    return buildCommon.makeSpan(["mord", "rlap"], [inner, fix], options);
  },
  mathmlBuilder: function mathmlBuilder(group, options) {
    var inner = buildMathML_buildExpression(defineFunction_ordargument(group.body), options);
    var node = new mathMLTree.MathNode("mphantom", inner);
    node.setAttribute("width", "0px");
    return node;
  }
});
// CONCATENATED MODULE: ./src/functions/sizing.js





function sizingGroup(value, options, baseOptions) {
  var inner = buildHTML_buildExpression(value, options, false);
  var multiplier = options.sizeMultiplier / baseOptions.sizeMultiplier; // Add size-resetting classes to the inner list and set maxFontSize
  // manually. Handle nested size changes.

  for (var i = 0; i < inner.length; i++) {
    var pos = inner[i].classes.indexOf("sizing");

    if (pos < 0) {
      Array.prototype.push.apply(inner[i].classes, options.sizingClasses(baseOptions));
    } else if (inner[i].classes[pos + 1] === "reset-size" + options.size) {
      // This is a nested size change: e.g., inner[i] is the "b" in
      // `\Huge a \small b`. Override the old size (the `reset-` class)
      // but not the new size.
      inner[i].classes[pos + 1] = "reset-size" + baseOptions.size;
    }

    inner[i].height *= multiplier;
    inner[i].depth *= multiplier;
  }

  return buildCommon.makeFragment(inner);
}
var sizeFuncs = ["\\tiny", "\\sixptsize", "\\scriptsize", "\\footnotesize", "\\small", "\\normalsize", "\\large", "\\Large", "\\LARGE", "\\huge", "\\Huge"];
var sizing_htmlBuilder = function htmlBuilder(group, options) {
  // Handle sizing operators like \Huge. Real TeX doesn't actually allow
  // these functions inside of math expressions, so we do some special
  // handling.
  var newOptions = options.havingSize(group.size);
  return sizingGroup(group.body, newOptions, options);
};
defineFunction({
  type: "sizing",
  names: sizeFuncs,
  props: {
    numArgs: 0,
    allowedInText: true
  },
  handler: function handler(_ref, args) {
    var breakOnTokenText = _ref.breakOnTokenText,
        funcName = _ref.funcName,
        parser = _ref.parser;
    parser.consumeSpaces();
    var body = parser.parseExpression(false, breakOnTokenText);
    return {
      type: "sizing",
      mode: parser.mode,
      // Figure out what size to use based on the list of functions above
      size: sizeFuncs.indexOf(funcName) + 1,
      body: body
    };
  },
  htmlBuilder: sizing_htmlBuilder,
  mathmlBuilder: function mathmlBuilder(group, options) {
    var newOptions = options.havingSize(group.size);
    var inner = buildMathML_buildExpression(group.body, newOptions);
    var node = new mathMLTree.MathNode("mstyle", inner); // TODO(emily): This doesn't produce the correct size for nested size
    // changes, because we don't keep state of what style we're currently
    // in, so we can't reset the size to normal before changing it.  Now
    // that we're passing an options parameter we should be able to fix
    // this.

    node.setAttribute("mathsize", newOptions.sizeMultiplier + "em");
    return node;
  }
});
// CONCATENATED MODULE: ./src/functions/raisebox.js






 // Box manipulation

defineFunction({
  type: "raisebox",
  names: ["\\raisebox"],
  props: {
    numArgs: 2,
    argTypes: ["size", "text"],
    allowedInText: true
  },
  handler: function handler(_ref, args) {
    var parser = _ref.parser;
    var amount = assertNodeType(args[0], "size").value;
    var body = args[1];
    return {
      type: "raisebox",
      mode: parser.mode,
      dy: amount,
      body: body
    };
  },
  htmlBuilder: function htmlBuilder(group, options) {
    var text = {
      type: "text",
      mode: group.mode,
      body: defineFunction_ordargument(group.body),
      font: "mathrm" // simulate \textrm

    };
    var sizedText = {
      type: "sizing",
      mode: group.mode,
      body: [text],
      size: 6 // simulate \normalsize

    };
    var body = sizing_htmlBuilder(sizedText, options);
    var dy = units_calculateSize(group.dy, options);
    return buildCommon.makeVList({
      positionType: "shift",
      positionData: -dy,
      children: [{
        type: "elem",
        elem: body
      }]
    }, options);
  },
  mathmlBuilder: function mathmlBuilder(group, options) {
    var node = new mathMLTree.MathNode("mpadded", [buildMathML_buildGroup(group.body, options)]);
    var dy = group.dy.number + group.dy.unit;
    node.setAttribute("voffset", dy);
    return node;
  }
});
// CONCATENATED MODULE: ./src/functions/rule.js





defineFunction({
  type: "rule",
  names: ["\\rule"],
  props: {
    numArgs: 2,
    numOptionalArgs: 1,
    argTypes: ["size", "size", "size"]
  },
  handler: function handler(_ref, args, optArgs) {
    var parser = _ref.parser;
    var shift = optArgs[0];
    var width = assertNodeType(args[0], "size");
    var height = assertNodeType(args[1], "size");
    return {
      type: "rule",
      mode: parser.mode,
      shift: shift && assertNodeType(shift, "size").value,
      width: width.value,
      height: height.value
    };
  },
  htmlBuilder: function htmlBuilder(group, options) {
    // Make an empty span for the rule
    var rule = buildCommon.makeSpan(["mord", "rule"], [], options); // Calculate the shift, width, and height of the rule, and account for units

    var shift = 0;

    if (group.shift) {
      shift = units_calculateSize(group.shift, options);
    }

    var width = units_calculateSize(group.width, options);
    var height = units_calculateSize(group.height, options); // Style the rule to the right size

    rule.style.borderRightWidth = width + "em";
    rule.style.borderTopWidth = height + "em";
    rule.style.bottom = shift + "em"; // Record the height and width

    rule.width = width;
    rule.height = height + shift;
    rule.depth = -shift; // Font size is the number large enough that the browser will
    // reserve at least `absHeight` space above the baseline.
    // The 1.125 factor was empirically determined

    rule.maxFontSize = height * 1.125 * options.sizeMultiplier;
    return rule;
  },
  mathmlBuilder: function mathmlBuilder(group, options) {
    // TODO(emily): Figure out if there's an actual way to draw black boxes
    // in MathML.
    var node = new mathMLTree.MathNode("mrow");
    return node;
  }
});
// CONCATENATED MODULE: ./src/functions/smash.js
// smash, with optional [tb], as in AMS






defineFunction({
  type: "smash",
  names: ["\\smash"],
  props: {
    numArgs: 1,
    numOptionalArgs: 1,
    allowedInText: true
  },
  handler: function handler(_ref, args, optArgs) {
    var parser = _ref.parser;
    var smashHeight = false;
    var smashDepth = false;
    var tbArg = optArgs[0] && assertNodeType(optArgs[0], "ordgroup");

    if (tbArg) {
      // Optional [tb] argument is engaged.
      // ref: amsmath: \renewcommand{\smash}[1][tb]{%
      //               def\mb@t{\ht}\def\mb@b{\dp}\def\mb@tb{\ht\z@\z@\dp}%
      var letter = "";

      for (var i = 0; i < tbArg.body.length; ++i) {
        var node = tbArg.body[i]; // $FlowFixMe: Not every node type has a `text` property.

        letter = node.text;

        if (letter === "t") {
          smashHeight = true;
        } else if (letter === "b") {
          smashDepth = true;
        } else {
          smashHeight = false;
          smashDepth = false;
          break;
        }
      }
    } else {
      smashHeight = true;
      smashDepth = true;
    }

    var body = args[0];
    return {
      type: "smash",
      mode: parser.mode,
      body: body,
      smashHeight: smashHeight,
      smashDepth: smashDepth
    };
  },
  htmlBuilder: function htmlBuilder(group, options) {
    var node = buildCommon.makeSpan(["mord"], [buildHTML_buildGroup(group.body, options)]);

    if (!group.smashHeight && !group.smashDepth) {
      return node;
    }

    if (group.smashHeight) {
      node.height = 0; // In order to influence makeVList, we have to reset the children.

      if (node.children) {
        for (var i = 0; i < node.children.length; i++) {
          node.children[i].height = 0;
        }
      }
    }

    if (group.smashDepth) {
      node.depth = 0;

      if (node.children) {
        for (var _i = 0; _i < node.children.length; _i++) {
          node.children[_i].depth = 0;
        }
      }
    } // At this point, we've reset the TeX-like height and depth values.
    // But the span still has an HTML line height.
    // makeVList applies "display: table-cell", which prevents the browser
    // from acting on that line height. So we'll call makeVList now.


    return buildCommon.makeVList({
      positionType: "firstBaseline",
      children: [{
        type: "elem",
        elem: node
      }]
    }, options);
  },
  mathmlBuilder: function mathmlBuilder(group, options) {
    var node = new mathMLTree.MathNode("mpadded", [buildMathML_buildGroup(group.body, options)]);

    if (group.smashHeight) {
      node.setAttribute("height", "0px");
    }

    if (group.smashDepth) {
      node.setAttribute("depth", "0px");
    }

    return node;
  }
});
// CONCATENATED MODULE: ./src/functions/sqrt.js







defineFunction({
  type: "sqrt",
  names: ["\\sqrt"],
  props: {
    numArgs: 1,
    numOptionalArgs: 1
  },
  handler: function handler(_ref, args, optArgs) {
    var parser = _ref.parser;
    var index = optArgs[0];
    var body = args[0];
    return {
      type: "sqrt",
      mode: parser.mode,
      body: body,
      index: index
    };
  },
  htmlBuilder: function htmlBuilder(group, options) {
    // Square roots are handled in the TeXbook pg. 443, Rule 11.
    // First, we do the same steps as in overline to build the inner group
    // and line
    var inner = buildHTML_buildGroup(group.body, options.havingCrampedStyle());

    if (inner.height === 0) {
      // Render a small surd.
      inner.height = options.fontMetrics().xHeight;
    } // Some groups can return document fragments.  Handle those by wrapping
    // them in a span.


    inner = buildCommon.wrapFragment(inner, options); // Calculate the minimum size for the \surd delimiter

    var metrics = options.fontMetrics();
    var theta = metrics.defaultRuleThickness;
    var phi = theta;

    if (options.style.id < src_Style.TEXT.id) {
      phi = options.fontMetrics().xHeight;
    } // Calculate the clearance between the body and line


    var lineClearance = theta + phi / 4;
    var minDelimiterHeight = inner.height + inner.depth + lineClearance + theta; // Create a sqrt SVG of the required minimum size

    var _delimiter$sqrtImage = delimiter.sqrtImage(minDelimiterHeight, options),
        img = _delimiter$sqrtImage.span,
        ruleWidth = _delimiter$sqrtImage.ruleWidth,
        advanceWidth = _delimiter$sqrtImage.advanceWidth;

    var delimDepth = img.height - ruleWidth; // Adjust the clearance based on the delimiter size

    if (delimDepth > inner.height + inner.depth + lineClearance) {
      lineClearance = (lineClearance + delimDepth - inner.height - inner.depth) / 2;
    } // Shift the sqrt image


    var imgShift = img.height - inner.height - lineClearance - ruleWidth;
    inner.style.paddingLeft = advanceWidth + "em"; // Overlay the image and the argument.

    var body = buildCommon.makeVList({
      positionType: "firstBaseline",
      children: [{
        type: "elem",
        elem: inner,
        wrapperClasses: ["svg-align"]
      }, {
        type: "kern",
        size: -(inner.height + imgShift)
      }, {
        type: "elem",
        elem: img
      }, {
        type: "kern",
        size: ruleWidth
      }]
    }, options);

    if (!group.index) {
      return buildCommon.makeSpan(["mord", "sqrt"], [body], options);
    } else {
      // Handle the optional root index
      // The index is always in scriptscript style
      var newOptions = options.havingStyle(src_Style.SCRIPTSCRIPT);
      var rootm = buildHTML_buildGroup(group.index, newOptions, options); // The amount the index is shifted by. This is taken from the TeX
      // source, in the definition of `\r@@t`.

      var toShift = 0.6 * (body.height - body.depth); // Build a VList with the superscript shifted up correctly

      var rootVList = buildCommon.makeVList({
        positionType: "shift",
        positionData: -toShift,
        children: [{
          type: "elem",
          elem: rootm
        }]
      }, options); // Add a class surrounding it so we can add on the appropriate
      // kerning

      var rootVListWrap = buildCommon.makeSpan(["root"], [rootVList]);
      return buildCommon.makeSpan(["mord", "sqrt"], [rootVListWrap, body], options);
    }
  },
  mathmlBuilder: function mathmlBuilder(group, options) {
    var body = group.body,
        index = group.index;
    return index ? new mathMLTree.MathNode("mroot", [buildMathML_buildGroup(body, options), buildMathML_buildGroup(index, options)]) : new mathMLTree.MathNode("msqrt", [buildMathML_buildGroup(body, options)]);
  }
});
// CONCATENATED MODULE: ./src/functions/styling.js





var styling_styleMap = {
  "display": src_Style.DISPLAY,
  "text": src_Style.TEXT,
  "script": src_Style.SCRIPT,
  "scriptscript": src_Style.SCRIPTSCRIPT
};
defineFunction({
  type: "styling",
  names: ["\\displaystyle", "\\textstyle", "\\scriptstyle", "\\scriptscriptstyle"],
  props: {
    numArgs: 0,
    allowedInText: true
  },
  handler: function handler(_ref, args) {
    var breakOnTokenText = _ref.breakOnTokenText,
        funcName = _ref.funcName,
        parser = _ref.parser;
    // parse out the implicit body
    parser.consumeSpaces();
    var body = parser.parseExpression(true, breakOnTokenText); // TODO: Refactor to avoid duplicating styleMap in multiple places (e.g.
    // here and in buildHTML and de-dupe the enumeration of all the styles).
    // $FlowFixMe: The names above exactly match the styles.

    var style = funcName.slice(1, funcName.length - 5);
    return {
      type: "styling",
      mode: parser.mode,
      // Figure out what style to use by pulling out the style from
      // the function name
      style: style,
      body: body
    };
  },
  htmlBuilder: function htmlBuilder(group, options) {
    // Style changes are handled in the TeXbook on pg. 442, Rule 3.
    var newStyle = styling_styleMap[group.style];
    var newOptions = options.havingStyle(newStyle).withFont('');
    return sizingGroup(group.body, newOptions, options);
  },
  mathmlBuilder: function mathmlBuilder(group, options) {
    // Figure out what style we're changing to.
    // TODO(kevinb): dedupe this with buildHTML.js
    // This will be easier of handling of styling nodes is in the same file.
    var styleMap = {
      "display": src_Style.DISPLAY,
      "text": src_Style.TEXT,
      "script": src_Style.SCRIPT,
      "scriptscript": src_Style.SCRIPTSCRIPT
    };
    var newStyle = styleMap[group.style];
    var newOptions = options.havingStyle(newStyle);
    var inner = buildMathML_buildExpression(group.body, newOptions);
    var node = new mathMLTree.MathNode("mstyle", inner);
    var styleAttributes = {
      "display": ["0", "true"],
      "text": ["0", "false"],
      "script": ["1", "false"],
      "scriptscript": ["2", "false"]
    };
    var attr = styleAttributes[group.style];
    node.setAttribute("scriptlevel", attr[0]);
    node.setAttribute("displaystyle", attr[1]);
    return node;
  }
});
// CONCATENATED MODULE: ./src/functions/supsub.js













/**
 * Sometimes, groups perform special rules when they have superscripts or
 * subscripts attached to them. This function lets the `supsub` group know that
 * Sometimes, groups perform special rules when they have superscripts or
 * its inner element should handle the superscripts and subscripts instead of
 * handling them itself.
 */
var supsub_htmlBuilderDelegate = function htmlBuilderDelegate(group, options) {
  var base = group.base;

  if (!base) {
    return null;
  } else if (base.type === "op") {
    // Operators handle supsubs differently when they have limits
    // (e.g. `\displaystyle\sum_2^3`)
    var delegate = base.limits && (options.style.size === src_Style.DISPLAY.size || base.alwaysHandleSupSub);
    return delegate ? op_htmlBuilder : null;
  } else if (base.type === "accent") {
    return utils.isCharacterBox(base.base) ? accent_htmlBuilder : null;
  } else if (base.type === "horizBrace") {
    var isSup = !group.sub;
    return isSup === base.isOver ? horizBrace_htmlBuilder : null;
  } else {
    return null;
  }
}; // Super scripts and subscripts, whose precise placement can depend on other
// functions that precede them.


defineFunctionBuilders({
  type: "supsub",
  htmlBuilder: function htmlBuilder(group, options) {
    // Superscript and subscripts are handled in the TeXbook on page
    // 445-446, rules 18(a-f).
    // Here is where we defer to the inner group if it should handle
    // superscripts and subscripts itself.
    var builderDelegate = supsub_htmlBuilderDelegate(group, options);

    if (builderDelegate) {
      return builderDelegate(group, options);
    }

    var valueBase = group.base,
        valueSup = group.sup,
        valueSub = group.sub;
    var base = buildHTML_buildGroup(valueBase, options);
    var supm;
    var subm;
    var metrics = options.fontMetrics(); // Rule 18a

    var supShift = 0;
    var subShift = 0;
    var isCharacterBox = valueBase && utils.isCharacterBox(valueBase);

    if (valueSup) {
      var newOptions = options.havingStyle(options.style.sup());
      supm = buildHTML_buildGroup(valueSup, newOptions, options);

      if (!isCharacterBox) {
        supShift = base.height - newOptions.fontMetrics().supDrop * newOptions.sizeMultiplier / options.sizeMultiplier;
      }
    }

    if (valueSub) {
      var _newOptions = options.havingStyle(options.style.sub());

      subm = buildHTML_buildGroup(valueSub, _newOptions, options);

      if (!isCharacterBox) {
        subShift = base.depth + _newOptions.fontMetrics().subDrop * _newOptions.sizeMultiplier / options.sizeMultiplier;
      }
    } // Rule 18c


    var minSupShift;

    if (options.style === src_Style.DISPLAY) {
      minSupShift = metrics.sup1;
    } else if (options.style.cramped) {
      minSupShift = metrics.sup3;
    } else {
      minSupShift = metrics.sup2;
    } // scriptspace is a font-size-independent size, so scale it
    // appropriately for use as the marginRight.


    var multiplier = options.sizeMultiplier;
    var marginRight = 0.5 / metrics.ptPerEm / multiplier + "em";
    var marginLeft = null;

    if (subm) {
      // Subscripts shouldn't be shifted by the base's italic correction.
      // Account for that by shifting the subscript back the appropriate
      // amount. Note we only do this when the base is a single symbol.
      var isOiint = group.base && group.base.type === "op" && group.base.name && (group.base.name === "\\oiint" || group.base.name === "\\oiiint");

      if (base instanceof domTree_SymbolNode || isOiint) {
        // $FlowFixMe
        marginLeft = -base.italic + "em";
      }
    }

    var supsub;

    if (supm && subm) {
      supShift = Math.max(supShift, minSupShift, supm.depth + 0.25 * metrics.xHeight);
      subShift = Math.max(subShift, metrics.sub2);
      var ruleWidth = metrics.defaultRuleThickness; // Rule 18e

      var maxWidth = 4 * ruleWidth;

      if (supShift - supm.depth - (subm.height - subShift) < maxWidth) {
        subShift = maxWidth - (supShift - supm.depth) + subm.height;
        var psi = 0.8 * metrics.xHeight - (supShift - supm.depth);

        if (psi > 0) {
          supShift += psi;
          subShift -= psi;
        }
      }

      var vlistElem = [{
        type: "elem",
        elem: subm,
        shift: subShift,
        marginRight: marginRight,
        marginLeft: marginLeft
      }, {
        type: "elem",
        elem: supm,
        shift: -supShift,
        marginRight: marginRight
      }];
      supsub = buildCommon.makeVList({
        positionType: "individualShift",
        children: vlistElem
      }, options);
    } else if (subm) {
      // Rule 18b
      subShift = Math.max(subShift, metrics.sub1, subm.height - 0.8 * metrics.xHeight);
      var _vlistElem = [{
        type: "elem",
        elem: subm,
        marginLeft: marginLeft,
        marginRight: marginRight
      }];
      supsub = buildCommon.makeVList({
        positionType: "shift",
        positionData: subShift,
        children: _vlistElem
      }, options);
    } else if (supm) {
      // Rule 18c, d
      supShift = Math.max(supShift, minSupShift, supm.depth + 0.25 * metrics.xHeight);
      supsub = buildCommon.makeVList({
        positionType: "shift",
        positionData: -supShift,
        children: [{
          type: "elem",
          elem: supm,
          marginRight: marginRight
        }]
      }, options);
    } else {
      throw new Error("supsub must have either sup or sub.");
    } // Wrap the supsub vlist in a span.msupsub to reset text-align.


    var mclass = getTypeOfDomTree(base, "right") || "mord";
    return buildCommon.makeSpan([mclass], [base, buildCommon.makeSpan(["msupsub"], [supsub])], options);
  },
  mathmlBuilder: function mathmlBuilder(group, options) {
    // Is the inner group a relevant horizonal brace?
    var isBrace = false;
    var isOver;
    var isSup;
    var horizBrace = checkNodeType(group.base, "horizBrace");

    if (horizBrace) {
      isSup = !!group.sup;

      if (isSup === horizBrace.isOver) {
        isBrace = true;
        isOver = horizBrace.isOver;
      }
    }

    var children = [buildMathML_buildGroup(group.base, options)];

    if (group.sub) {
      children.push(buildMathML_buildGroup(group.sub, options));
    }

    if (group.sup) {
      children.push(buildMathML_buildGroup(group.sup, options));
    }

    var nodeType;

    if (isBrace) {
      nodeType = isOver ? "mover" : "munder";
    } else if (!group.sub) {
      var base = group.base;

      if (base && base.type === "op" && base.limits && options.style === src_Style.DISPLAY) {
        nodeType = "mover";
      } else {
        nodeType = "msup";
      }
    } else if (!group.sup) {
      var _base = group.base;

      if (_base && _base.type === "op" && _base.limits && options.style === src_Style.DISPLAY) {
        nodeType = "munder";
      } else {
        nodeType = "msub";
      }
    } else {
      var _base2 = group.base;

      if (_base2 && _base2.type === "op" && _base2.limits && options.style === src_Style.DISPLAY) {
        nodeType = "munderover";
      } else {
        nodeType = "msubsup";
      }
    }

    var node = new mathMLTree.MathNode(nodeType, children);
    return node;
  }
});
// CONCATENATED MODULE: ./src/functions/symbolsOp.js



 // Operator ParseNodes created in Parser.js from symbol Groups in src/symbols.js.

defineFunctionBuilders({
  type: "atom",
  htmlBuilder: function htmlBuilder(group, options) {
    return buildCommon.mathsym(group.text, group.mode, options, ["m" + group.family]);
  },
  mathmlBuilder: function mathmlBuilder(group, options) {
    var node = new mathMLTree.MathNode("mo", [buildMathML_makeText(group.text, group.mode)]);

    if (group.family === "bin") {
      var variant = buildMathML_getVariant(group, options);

      if (variant === "bold-italic") {
        node.setAttribute("mathvariant", variant);
      }
    } else if (group.family === "punct") {
      node.setAttribute("separator", "true");
    }

    return node;
  }
});
// CONCATENATED MODULE: ./src/functions/symbolsOrd.js




// "mathord" and "textord" ParseNodes created in Parser.js from symbol Groups in
var defaultVariant = {
  "mi": "italic",
  "mn": "normal",
  "mtext": "normal"
};
defineFunctionBuilders({
  type: "mathord",
  htmlBuilder: function htmlBuilder(group, options) {
    return buildCommon.makeOrd(group, options, "mathord");
  },
  mathmlBuilder: function mathmlBuilder(group, options) {
    var node = new mathMLTree.MathNode("mi", [buildMathML_makeText(group.text, group.mode, options)]);
    var variant = buildMathML_getVariant(group, options) || "italic";

    if (variant !== defaultVariant[node.type]) {
      node.setAttribute("mathvariant", variant);
    }

    return node;
  }
});
defineFunctionBuilders({
  type: "textord",
  htmlBuilder: function htmlBuilder(group, options) {
    return buildCommon.makeOrd(group, options, "textord");
  },
  mathmlBuilder: function mathmlBuilder(group, options) {
    var text = buildMathML_makeText(group.text, group.mode, options);
    var variant = buildMathML_getVariant(group, options) || "normal";
    var node;

    if (group.mode === 'text') {
      node = new mathMLTree.MathNode("mtext", [text]);
    } else if (/[0-9]/.test(group.text)) {
      // TODO(kevinb) merge adjacent <mn> nodes
      // do it as a post processing step
      node = new mathMLTree.MathNode("mn", [text]);
    } else if (group.text === "\\prime") {
      node = new mathMLTree.MathNode("mo", [text]);
    } else {
      node = new mathMLTree.MathNode("mi", [text]);
    }

    if (variant !== defaultVariant[node.type]) {
      node.setAttribute("mathvariant", variant);
    }

    return node;
  }
});
// CONCATENATED MODULE: ./src/functions/symbolsSpacing.js



 // A map of CSS-based spacing functions to their CSS class.

var cssSpace = {
  "\\nobreak": "nobreak",
  "\\allowbreak": "allowbreak"
}; // A lookup table to determine whether a spacing function/symbol should be
// treated like a regular space character.  If a symbol or command is a key
// in this table, then it should be a regular space character.  Furthermore,
// the associated value may have a `className` specifying an extra CSS class
// to add to the created `span`.

var regularSpace = {
  " ": {},
  "\\ ": {},
  "~": {
    className: "nobreak"
  },
  "\\space": {},
  "\\nobreakspace": {
    className: "nobreak"
  }
}; // ParseNode<"spacing"> created in Parser.js from the "spacing" symbol Groups in
// src/symbols.js.

defineFunctionBuilders({
  type: "spacing",
  htmlBuilder: function htmlBuilder(group, options) {
    if (regularSpace.hasOwnProperty(group.text)) {
      var className = regularSpace[group.text].className || ""; // Spaces are generated by adding an actual space. Each of these
      // things has an entry in the symbols table, so these will be turned
      // into appropriate outputs.

      if (group.mode === "text") {
        var ord = buildCommon.makeOrd(group, options, "textord");
        ord.classes.push(className);
        return ord;
      } else {
        return buildCommon.makeSpan(["mspace", className], [buildCommon.mathsym(group.text, group.mode, options)], options);
      }
    } else if (cssSpace.hasOwnProperty(group.text)) {
      // Spaces based on just a CSS class.
      return buildCommon.makeSpan(["mspace", cssSpace[group.text]], [], options);
    } else {
      throw new src_ParseError("Unknown type of space \"" + group.text + "\"");
    }
  },
  mathmlBuilder: function mathmlBuilder(group, options) {
    var node;

    if (regularSpace.hasOwnProperty(group.text)) {
      node = new mathMLTree.MathNode("mtext", [new mathMLTree.TextNode("\xA0")]);
    } else if (cssSpace.hasOwnProperty(group.text)) {
      // CSS-based MathML spaces (\nobreak, \allowbreak) are ignored
      return new mathMLTree.MathNode("mspace");
    } else {
      throw new src_ParseError("Unknown type of space \"" + group.text + "\"");
    }

    return node;
  }
});
// CONCATENATED MODULE: ./src/functions/tag.js



defineFunctionBuilders({
  type: "tag",
  mathmlBuilder: function mathmlBuilder(group, options) {
    var table = new mathMLTree.MathNode("mtable", [new mathMLTree.MathNode("mlabeledtr", [new mathMLTree.MathNode("mtd", [buildExpressionRow(group.tag, options)]), new mathMLTree.MathNode("mtd", [buildExpressionRow(group.body, options)])])]);
    table.setAttribute("side", "right");
    return table;
  }
});
// CONCATENATED MODULE: ./src/functions/text.js



 // Non-mathy text, possibly in a font

var textFontFamilies = {
  "\\text": undefined,
  "\\textrm": "textrm",
  "\\textsf": "textsf",
  "\\texttt": "texttt",
  "\\textnormal": "textrm"
};
var textFontWeights = {
  "\\textbf": "textbf"
};
var textFontShapes = {
  "\\textit": "textit"
};

var optionsWithFont = function optionsWithFont(group, options) {
  var font = group.font; // Checks if the argument is a font family or a font style.

  if (!font) {
    return options;
  } else if (textFontFamilies[font]) {
    return options.withTextFontFamily(textFontFamilies[font]);
  } else if (textFontWeights[font]) {
    return options.withTextFontWeight(textFontWeights[font]);
  } else {
    return options.withTextFontShape(textFontShapes[font]);
  }
};

defineFunction({
  type: "text",
  names: [// Font families
  "\\text", "\\textrm", "\\textsf", "\\texttt", "\\textnormal", // Font weights
  "\\textbf", // Font Shapes
  "\\textit"],
  props: {
    numArgs: 1,
    argTypes: ["text"],
    greediness: 2,
    allowedInText: true,
    consumeMode: "text"
  },
  handler: function handler(_ref, args) {
    var parser = _ref.parser,
        funcName = _ref.funcName;
    var body = args[0];
    return {
      type: "text",
      mode: parser.mode,
      body: defineFunction_ordargument(body),
      font: funcName
    };
  },
  htmlBuilder: function htmlBuilder(group, options) {
    var newOptions = optionsWithFont(group, options);
    var inner = buildHTML_buildExpression(group.body, newOptions, true);
    return buildCommon.makeSpan(["mord", "text"], buildCommon.tryCombineChars(inner), newOptions);
  },
  mathmlBuilder: function mathmlBuilder(group, options) {
    var newOptions = optionsWithFont(group, options);
    return buildExpressionRow(group.body, newOptions);
  }
});
// CONCATENATED MODULE: ./src/functions/underline.js





defineFunction({
  type: "underline",
  names: ["\\underline"],
  props: {
    numArgs: 1,
    allowedInText: true
  },
  handler: function handler(_ref, args) {
    var parser = _ref.parser;
    return {
      type: "underline",
      mode: parser.mode,
      body: args[0]
    };
  },
  htmlBuilder: function htmlBuilder(group, options) {
    // Underlines are handled in the TeXbook pg 443, Rule 10.
    // Build the inner group.
    var innerGroup = buildHTML_buildGroup(group.body, options); // Create the line to go below the body

    var line = buildCommon.makeLineSpan("underline-line", options); // Generate the vlist, with the appropriate kerns

    var vlist = buildCommon.makeVList({
      positionType: "top",
      positionData: innerGroup.height,
      children: [{
        type: "kern",
        size: line.height
      }, {
        type: "elem",
        elem: line
      }, {
        type: "kern",
        size: 3 * line.height
      }, {
        type: "elem",
        elem: innerGroup
      }]
    }, options);
    return buildCommon.makeSpan(["mord", "underline"], [vlist], options);
  },
  mathmlBuilder: function mathmlBuilder(group, options) {
    var operator = new mathMLTree.MathNode("mo", [new mathMLTree.TextNode("\u203E")]);
    operator.setAttribute("stretchy", "true");
    var node = new mathMLTree.MathNode("munder", [buildMathML_buildGroup(group.body, options), operator]);
    node.setAttribute("accentunder", "true");
    return node;
  }
});
// CONCATENATED MODULE: ./src/functions/verb.js




defineFunction({
  type: "verb",
  names: ["\\verb"],
  props: {
    numArgs: 0,
    allowedInText: true
  },
  handler: function handler(context, args, optArgs) {
    // \verb and \verb* are dealt with directly in Parser.js.
    // If we end up here, it's because of a failure to match the two delimiters
    // in the regex in Lexer.js.  LaTeX raises the following error when \verb is
    // terminated by end of line (or file).
    throw new src_ParseError("\\verb ended by end of line instead of matching delimiter");
  },
  htmlBuilder: function htmlBuilder(group, options) {
    var text = makeVerb(group);
    var body = []; // \verb enters text mode and therefore is sized like \textstyle

    var newOptions = options.havingStyle(options.style.text());

    for (var i = 0; i < text.length; i++) {
      var c = text[i];

      if (c === '~') {
        c = '\\textasciitilde';
      }

      body.push(buildCommon.makeSymbol(c, "Typewriter-Regular", group.mode, newOptions, ["mord", "texttt"]));
    }

    return buildCommon.makeSpan(["mord", "text"].concat(newOptions.sizingClasses(options)), buildCommon.tryCombineChars(body), newOptions);
  },
  mathmlBuilder: function mathmlBuilder(group, options) {
    var text = new mathMLTree.TextNode(makeVerb(group));
    var node = new mathMLTree.MathNode("mtext", [text]);
    node.setAttribute("mathvariant", "monospace");
    return node;
  }
});
/**
 * Converts verb group into body string.
 *
 * \verb* replaces each space with an open box \u2423
 * \verb replaces each space with a no-break space \xA0
 */

var makeVerb = function makeVerb(group) {
  return group.body.replace(/ /g, group.star ? "\u2423" : '\xA0');
};
// CONCATENATED MODULE: ./src/functions.js
/** Include this to ensure that all functions are defined. */

var functions = _functions;
/* harmony default export */ var src_functions = (functions); // TODO(kevinb): have functions return an object and call defineFunction with
// that object in this file instead of relying on side-effects.







































// CONCATENATED MODULE: ./src/Lexer.js
/**
 * The Lexer class handles tokenizing the input in various ways. Since our
 * parser expects us to be able to backtrack, the lexer allows lexing from any
 * given starting point.
 *
 * Its main exposed function is the `lex` function, which takes a position to
 * lex from and a type of token to lex. It defers to the appropriate `_innerLex`
 * function.
 *
 * The various `_innerLex` functions perform the actual lexing of different
 * kinds.
 */




/* The following tokenRegex
 * - matches typical whitespace (but not NBSP etc.) using its first group
 * - does not match any control character \x00-\x1f except whitespace
 * - does not match a bare backslash
 * - matches any ASCII character except those just mentioned
 * - does not match the BMP private use area \uE000-\uF8FF
 * - does not match bare surrogate code units
 * - matches any BMP character except for those just described
 * - matches any valid Unicode surrogate pair
 * - matches a backslash followed by one or more letters
 * - matches a backslash followed by any BMP character, including newline
 * Just because the Lexer matches something doesn't mean it's valid input:
 * If there is no matching function or symbol definition, the Parser will
 * still reject the input.
 */
var spaceRegexString = "[ \r\n\t]";
var controlWordRegexString = "\\\\[a-zA-Z@]+";
var controlSymbolRegexString = "\\\\[^\uD800-\uDFFF]";
var controlWordWhitespaceRegexString = "" + controlWordRegexString + spaceRegexString + "*";
var controlWordWhitespaceRegex = new RegExp("^(" + controlWordRegexString + ")" + spaceRegexString + "*$");
var combiningDiacriticalMarkString = "[\u0300-\u036F]";
var combiningDiacriticalMarksEndRegex = new RegExp(combiningDiacriticalMarkString + "+$");
var tokenRegexString = "(" + spaceRegexString + "+)|" + // whitespace
"([!-\\[\\]-\u2027\u202A-\uD7FF\uF900-\uFFFF]" + ( // single codepoint
combiningDiacriticalMarkString + "*") + // ...plus accents
"|[\uD800-\uDBFF][\uDC00-\uDFFF]" + ( // surrogate pair
combiningDiacriticalMarkString + "*") + // ...plus accents
"|\\\\verb\\*([^]).*?\\3" + // \verb*
"|\\\\verb([^*a-zA-Z]).*?\\4" + ( // \verb unstarred
"|" + controlWordWhitespaceRegexString) + ( // \macroName + spaces
"|" + controlSymbolRegexString + ")"); // \\, \', etc.
// These regexs are for matching results from tokenRegex,
// so they do have ^ markers.

var Lexer_Lexer =
/*#__PURE__*/
function () {
  function Lexer(input) {
    this.input = void 0;
    this.tokenRegex = void 0;
    // Separate accents from characters
    this.input = input;
    this.tokenRegex = new RegExp(tokenRegexString, 'g');
  }
  /**
   * This function lexes a single token.
   */


  var _proto = Lexer.prototype;

  _proto.lex = function lex() {
    var input = this.input;
    var pos = this.tokenRegex.lastIndex;

    if (pos === input.length) {
      return new Token_Token("EOF", new SourceLocation(this, pos, pos));
    }

    var match = this.tokenRegex.exec(input);

    if (match === null || match.index !== pos) {
      throw new src_ParseError("Unexpected character: '" + input[pos] + "'", new Token_Token(input[pos], new SourceLocation(this, pos, pos + 1)));
    }

    var text = match[2] || " "; // Trim any trailing whitespace from control word match

    var controlMatch = text.match(controlWordWhitespaceRegex);

    if (controlMatch) {
      text = controlMatch[1];
    }

    return new Token_Token(text, new SourceLocation(this, pos, this.tokenRegex.lastIndex));
  };

  return Lexer;
}();


// CONCATENATED MODULE: ./src/Namespace.js
/**
 * A `Namespace` refers to a space of nameable things like macros or lengths,
 * which can be `set` either globally or local to a nested group, using an
 * undo stack similar to how TeX implements this functionality.
 * Performance-wise, `get` and local `set` take constant time, while global
 * `set` takes time proportional to the depth of group nesting.
 */


var Namespace_Namespace =
/*#__PURE__*/
function () {
  /**
   * Both arguments are optional.  The first argument is an object of
   * built-in mappings which never change.  The second argument is an object
   * of initial (global-level) mappings, which will constantly change
   * according to any global/top-level `set`s done.
   */
  function Namespace(builtins, globalMacros) {
    if (builtins === void 0) {
      builtins = {};
    }

    if (globalMacros === void 0) {
      globalMacros = {};
    }

    this.current = void 0;
    this.builtins = void 0;
    this.undefStack = void 0;
    this.current = globalMacros;
    this.builtins = builtins;
    this.undefStack = [];
  }
  /**
   * Start a new nested group, affecting future local `set`s.
   */


  var _proto = Namespace.prototype;

  _proto.beginGroup = function beginGroup() {
    this.undefStack.push({});
  };
  /**
   * End current nested group, restoring values before the group began.
   */


  _proto.endGroup = function endGroup() {
    if (this.undefStack.length === 0) {
      throw new src_ParseError("Unbalanced namespace destruction: attempt " + "to pop global namespace; please report this as a bug");
    }

    var undefs = this.undefStack.pop();

    for (var undef in undefs) {
      if (undefs.hasOwnProperty(undef)) {
        if (undefs[undef] === undefined) {
          delete this.current[undef];
        } else {
          this.current[undef] = undefs[undef];
        }
      }
    }
  };
  /**
   * Detect whether `name` has a definition.  Equivalent to
   * `get(name) != null`.
   */


  _proto.has = function has(name) {
    return this.current.hasOwnProperty(name) || this.builtins.hasOwnProperty(name);
  };
  /**
   * Get the current value of a name, or `undefined` if there is no value.
   *
   * Note: Do not use `if (namespace.get(...))` to detect whether a macro
   * is defined, as the definition may be the empty string which evaluates
   * to `false` in JavaScript.  Use `if (namespace.get(...) != null)` or
   * `if (namespace.has(...))`.
   */


  _proto.get = function get(name) {
    if (this.current.hasOwnProperty(name)) {
      return this.current[name];
    } else {
      return this.builtins[name];
    }
  };
  /**
   * Set the current value of a name, and optionally set it globally too.
   * Local set() sets the current value and (when appropriate) adds an undo
   * operation to the undo stack.  Global set() may change the undo
   * operation at every level, so takes time linear in their number.
   */


  _proto.set = function set(name, value, global) {
    if (global === void 0) {
      global = false;
    }

    if (global) {
      // Global set is equivalent to setting in all groups.  Simulate this
      // by destroying any undos currently scheduled for this name,
      // and adding an undo with the *new* value (in case it later gets
      // locally reset within this environment).
      for (var i = 0; i < this.undefStack.length; i++) {
        delete this.undefStack[i][name];
      }

      if (this.undefStack.length > 0) {
        this.undefStack[this.undefStack.length - 1][name] = value;
      }
    } else {
      // Undo this set at end of this group (possibly to `undefined`),
      // unless an undo is already in place, in which case that older
      // value is the correct one.
      var top = this.undefStack[this.undefStack.length - 1];

      if (top && !top.hasOwnProperty(name)) {
        top[name] = this.current[name];
      }
    }

    this.current[name] = value;
  };

  return Namespace;
}();


// CONCATENATED MODULE: ./src/macros.js
/**
 * Predefined macros for KaTeX.
 * This can be used to define some commands in terms of others.
 */





var builtinMacros = {};
/* harmony default export */ var macros = (builtinMacros); // This function might one day accept an additional argument and do more things.

function defineMacro(name, body) {
  builtinMacros[name] = body;
} //////////////////////////////////////////////////////////////////////
// macro tools
// LaTeX's \@firstoftwo{#1}{#2} expands to #1, skipping #2
// TeX source: \long\def\@firstoftwo#1#2{#1}

defineMacro("\\@firstoftwo", function (context) {
  var args = context.consumeArgs(2);
  return {
    tokens: args[0],
    numArgs: 0
  };
}); // LaTeX's \@secondoftwo{#1}{#2} expands to #2, skipping #1
// TeX source: \long\def\@secondoftwo#1#2{#2}

defineMacro("\\@secondoftwo", function (context) {
  var args = context.consumeArgs(2);
  return {
    tokens: args[1],
    numArgs: 0
  };
}); // LaTeX's \@ifnextchar{#1}{#2}{#3} looks ahead to the next (unexpanded)
// symbol.  If it matches #1, then the macro expands to #2; otherwise, #3.
// Note, however, that it does not consume the next symbol in either case.

defineMacro("\\@ifnextchar", function (context) {
  var args = context.consumeArgs(3); // symbol, if, else

  var nextToken = context.future();

  if (args[0].length === 1 && args[0][0].text === nextToken.text) {
    return {
      tokens: args[1],
      numArgs: 0
    };
  } else {
    return {
      tokens: args[2],
      numArgs: 0
    };
  }
}); // LaTeX's \@ifstar{#1}{#2} looks ahead to the next (unexpanded) symbol.
// If it is `*`, then it consumes the symbol, and the macro expands to #1;
// otherwise, the macro expands to #2 (without consuming the symbol).
// TeX source: \def\@ifstar#1{\@ifnextchar *{\@firstoftwo{#1}}}

defineMacro("\\@ifstar", "\\@ifnextchar *{\\@firstoftwo{#1}}"); // LaTeX's \TextOrMath{#1}{#2} expands to #1 in text mode, #2 in math mode

defineMacro("\\TextOrMath", function (context) {
  var args = context.consumeArgs(2);

  if (context.mode === 'text') {
    return {
      tokens: args[0],
      numArgs: 0
    };
  } else {
    return {
      tokens: args[1],
      numArgs: 0
    };
  }
}); // Lookup table for parsing numbers in base 8 through 16

var digitToNumber = {
  "0": 0,
  "1": 1,
  "2": 2,
  "3": 3,
  "4": 4,
  "5": 5,
  "6": 6,
  "7": 7,
  "8": 8,
  "9": 9,
  "a": 10,
  "A": 10,
  "b": 11,
  "B": 11,
  "c": 12,
  "C": 12,
  "d": 13,
  "D": 13,
  "e": 14,
  "E": 14,
  "f": 15,
  "F": 15
}; // TeX \char makes a literal character (catcode 12) using the following forms:
// (see The TeXBook, p. 43)
//   \char123  -- decimal
//   \char'123 -- octal
//   \char"123 -- hex
//   \char`x   -- character that can be written (i.e. isn't active)
//   \char`\x  -- character that cannot be written (e.g. %)
// These all refer to characters from the font, so we turn them into special
// calls to a function \@char dealt with in the Parser.

defineMacro("\\char", function (context) {
  var token = context.popToken();
  var base;
  var number = '';

  if (token.text === "'") {
    base = 8;
    token = context.popToken();
  } else if (token.text === '"') {
    base = 16;
    token = context.popToken();
  } else if (token.text === "`") {
    token = context.popToken();

    if (token.text[0] === "\\") {
      number = token.text.charCodeAt(1);
    } else if (token.text === "EOF") {
      throw new src_ParseError("\\char` missing argument");
    } else {
      number = token.text.charCodeAt(0);
    }
  } else {
    base = 10;
  }

  if (base) {
    // Parse a number in the given base, starting with first `token`.
    number = digitToNumber[token.text];

    if (number == null || number >= base) {
      throw new src_ParseError("Invalid base-" + base + " digit " + token.text);
    }

    var digit;

    while ((digit = digitToNumber[context.future().text]) != null && digit < base) {
      number *= base;
      number += digit;
      context.popToken();
    }
  }

  return "\\@char{" + number + "}";
}); // Basic support for macro definitions:
//     \def\macro{expansion}
//     \def\macro#1{expansion}
//     \def\macro#1#2{expansion}
//     \def\macro#1#2#3#4#5#6#7#8#9{expansion}
// Also the \gdef and \global\def equivalents

var macros_def = function def(context, global) {
  var arg = context.consumeArgs(1)[0];

  if (arg.length !== 1) {
    throw new src_ParseError("\\gdef's first argument must be a macro name");
  }

  var name = arg[0].text; // Count argument specifiers, and check they are in the order #1 #2 ...

  var numArgs = 0;
  arg = context.consumeArgs(1)[0];

  while (arg.length === 1 && arg[0].text === "#") {
    arg = context.consumeArgs(1)[0];

    if (arg.length !== 1) {
      throw new src_ParseError("Invalid argument number length \"" + arg.length + "\"");
    }

    if (!/^[1-9]$/.test(arg[0].text)) {
      throw new src_ParseError("Invalid argument number \"" + arg[0].text + "\"");
    }

    numArgs++;

    if (parseInt(arg[0].text) !== numArgs) {
      throw new src_ParseError("Argument number \"" + arg[0].text + "\" out of order");
    }

    arg = context.consumeArgs(1)[0];
  } // Final arg is the expansion of the macro


  context.macros.set(name, {
    tokens: arg,
    numArgs: numArgs
  }, global);
  return '';
};

defineMacro("\\gdef", function (context) {
  return macros_def(context, true);
});
defineMacro("\\def", function (context) {
  return macros_def(context, false);
});
defineMacro("\\global", function (context) {
  var next = context.consumeArgs(1)[0];

  if (next.length !== 1) {
    throw new src_ParseError("Invalid command after \\global");
  }

  var command = next[0].text; // TODO: Should expand command

  if (command === "\\def") {
    // \global\def is equivalent to \gdef
    return macros_def(context, true);
  } else {
    throw new src_ParseError("Invalid command '" + command + "' after \\global");
  }
}); // \newcommand{\macro}[args]{definition}
// \renewcommand{\macro}[args]{definition}
// TODO: Optional arguments: \newcommand{\macro}[args][default]{definition}

var macros_newcommand = function newcommand(context, existsOK, nonexistsOK) {
  var arg = context.consumeArgs(1)[0];

  if (arg.length !== 1) {
    throw new src_ParseError("\\newcommand's first argument must be a macro name");
  }

  var name = arg[0].text;
  var exists = context.isDefined(name);

  if (exists && !existsOK) {
    throw new src_ParseError("\\newcommand{" + name + "} attempting to redefine " + (name + "; use \\renewcommand"));
  }

  if (!exists && !nonexistsOK) {
    throw new src_ParseError("\\renewcommand{" + name + "} when command " + name + " " + "does not yet exist; use \\newcommand");
  }

  var numArgs = 0;
  arg = context.consumeArgs(1)[0];

  if (arg.length === 1 && arg[0].text === "[") {
    var argText = '';
    var token = context.expandNextToken();

    while (token.text !== "]" && token.text !== "EOF") {
      // TODO: Should properly expand arg, e.g., ignore {}s
      argText += token.text;
      token = context.expandNextToken();
    }

    if (!argText.match(/^\s*[0-9]+\s*$/)) {
      throw new src_ParseError("Invalid number of arguments: " + argText);
    }

    numArgs = parseInt(argText);
    arg = context.consumeArgs(1)[0];
  } // Final arg is the expansion of the macro


  context.macros.set(name, {
    tokens: arg,
    numArgs: numArgs
  });
  return '';
};

defineMacro("\\newcommand", function (context) {
  return macros_newcommand(context, false, true);
});
defineMacro("\\renewcommand", function (context) {
  return macros_newcommand(context, true, false);
});
defineMacro("\\providecommand", function (context) {
  return macros_newcommand(context, true, true);
}); //////////////////////////////////////////////////////////////////////
// Grouping
// \let\bgroup={ \let\egroup=}

defineMacro("\\bgroup", "{");
defineMacro("\\egroup", "}");
defineMacro("\\begingroup", "{");
defineMacro("\\endgroup", "}"); // Symbols from latex.ltx:
// \def\lq{`}
// \def\rq{'}
// \def \aa {\r a}
// \def \AA {\r A}

defineMacro("\\lq", "`");
defineMacro("\\rq", "'");
defineMacro("\\aa", "\\r a");
defineMacro("\\AA", "\\r A"); // Copyright (C) and registered (R) symbols. Use raw symbol in MathML.
// \DeclareTextCommandDefault{\textcopyright}{\textcircled{c}}
// \DeclareTextCommandDefault{\textregistered}{\textcircled{%
//      \check@mathfonts\fontsize\sf@size\z@\math@fontsfalse\selectfont R}}
// \DeclareRobustCommand{\copyright}{%
//    \ifmmode{\nfss@text{\textcopyright}}\else\textcopyright\fi}

defineMacro("\\textcopyright", "\\html@mathml{\\textcircled{c}}{\\char`©}");
defineMacro("\\copyright", "\\TextOrMath{\\textcopyright}{\\text{\\textcopyright}}");
defineMacro("\\textregistered", "\\html@mathml{\\textcircled{\\scriptsize R}}{\\char`®}"); // Unicode double-struck letters

defineMacro("\u2102", "\\mathbb{C}");
defineMacro("\u210D", "\\mathbb{H}");
defineMacro("\u2115", "\\mathbb{N}");
defineMacro("\u2119", "\\mathbb{P}");
defineMacro("\u211A", "\\mathbb{Q}");
defineMacro("\u211D", "\\mathbb{R}");
defineMacro("\u2124", "\\mathbb{Z}");
defineMacro("\u210E", "\\mathit{h}"); // Planck constant
// Characters omitted from Unicode range 1D400–1D7FF

defineMacro("\u212C", "\\mathscr{B}"); // script

defineMacro("\u2130", "\\mathscr{E}");
defineMacro("\u2131", "\\mathscr{F}");
defineMacro("\u210B", "\\mathscr{H}");
defineMacro("\u2110", "\\mathscr{I}");
defineMacro("\u2112", "\\mathscr{L}");
defineMacro("\u2133", "\\mathscr{M}");
defineMacro("\u211B", "\\mathscr{R}");
defineMacro("\u212D", "\\mathfrak{C}"); // Fraktur

defineMacro("\u210C", "\\mathfrak{H}");
defineMacro("\u2128", "\\mathfrak{Z}"); // Unicode middle dot
// The KaTeX fonts do not contain U+00B7. Instead, \cdotp displays
// the dot at U+22C5 and gives it punct spacing.

defineMacro("\xB7", "\\cdotp"); // \llap and \rlap render their contents in text mode

defineMacro("\\llap", "\\mathllap{\\textrm{#1}}");
defineMacro("\\rlap", "\\mathrlap{\\textrm{#1}}");
defineMacro("\\clap", "\\mathclap{\\textrm{#1}}"); // \not is defined by base/fontmath.ltx via
// \DeclareMathSymbol{\not}{\mathrel}{symbols}{"36}
// It's thus treated like a \mathrel, but defined by a symbol that has zero
// width but extends to the right.  We use \rlap to get that spacing.

defineMacro("\\not", '\\mathrel{\\mathrlap\\@not}'); // Negated symbols from base/fontmath.ltx:
// \def\neq{\not=} \let\ne=\neq
// \DeclareRobustCommand
//   \notin{\mathrel{\m@th\mathpalette\c@ncel\in}}
// \def\c@ncel#1#2{\m@th\ooalign{$\hfil#1\mkern1mu/\hfil$\crcr$#1#2$}}

defineMacro("\\neq", "\\html@mathml{\\mathrel{\\not=}}{\\mathrel{\\char`≠}}");
defineMacro("\\ne", "\\neq");
defineMacro("\u2260", "\\neq");
defineMacro("\\notin", "\\html@mathml{\\mathrel{{\\in}\\mathllap{/\\mskip1mu}}}" + "{\\mathrel{\\char`∉}}");
defineMacro("\u2209", "\\notin"); // Unicode stacked relations

defineMacro("\u2258", "\\html@mathml{" + "\\mathrel{=\\kern{-1em}\\raisebox{0.4em}{$\\scriptsize\\frown$}}" + "}{\\mathrel{\\char`\u2258}}");
defineMacro("\u2259", "\\html@mathml{\\stackrel{\\tiny\\wedge}{=}}{\\mathrel{\\char`\u2258}}");
defineMacro("\u225A", "\\html@mathml{\\stackrel{\\tiny\\vee}{=}}{\\mathrel{\\char`\u225A}}");
defineMacro("\u225B", "\\html@mathml{\\stackrel{\\scriptsize\\star}{=}}" + "{\\mathrel{\\char`\u225B}}");
defineMacro("\u225D", "\\html@mathml{\\stackrel{\\tiny\\mathrm{def}}{=}}" + "{\\mathrel{\\char`\u225D}}");
defineMacro("\u225E", "\\html@mathml{\\stackrel{\\tiny\\mathrm{m}}{=}}" + "{\\mathrel{\\char`\u225E}}");
defineMacro("\u225F", "\\html@mathml{\\stackrel{\\tiny?}{=}}{\\mathrel{\\char`\u225F}}"); // Misc Unicode

defineMacro("\u27C2", "\\perp");
defineMacro("\u203C", "\\mathclose{!\\mkern-0.8mu!}");
defineMacro("\u220C", "\\notni");
defineMacro("\u231C", "\\ulcorner");
defineMacro("\u231D", "\\urcorner");
defineMacro("\u231E", "\\llcorner");
defineMacro("\u231F", "\\lrcorner");
defineMacro("\xA9", "\\copyright");
defineMacro("\xAE", "\\textregistered");
defineMacro("\uFE0F", "\\textregistered"); //////////////////////////////////////////////////////////////////////
// LaTeX_2ε
// \vdots{\vbox{\baselineskip4\p@  \lineskiplimit\z@
// \kern6\p@\hbox{.}\hbox{.}\hbox{.}}}
// We'll call \varvdots, which gets a glyph from symbols.js.
// The zero-width rule gets us an equivalent to the vertical 6pt kern.

defineMacro("\\vdots", "\\mathord{\\varvdots\\rule{0pt}{15pt}}");
defineMacro("\u22EE", "\\vdots"); //////////////////////////////////////////////////////////////////////
// amsmath.sty
// http://mirrors.concertpass.com/tex-archive/macros/latex/required/amsmath/amsmath.pdf
// Italic Greek capital letters.  AMS defines these with \DeclareMathSymbol,
// but they are equivalent to \mathit{\Letter}.

defineMacro("\\varGamma", "\\mathit{\\Gamma}");
defineMacro("\\varDelta", "\\mathit{\\Delta}");
defineMacro("\\varTheta", "\\mathit{\\Theta}");
defineMacro("\\varLambda", "\\mathit{\\Lambda}");
defineMacro("\\varXi", "\\mathit{\\Xi}");
defineMacro("\\varPi", "\\mathit{\\Pi}");
defineMacro("\\varSigma", "\\mathit{\\Sigma}");
defineMacro("\\varUpsilon", "\\mathit{\\Upsilon}");
defineMacro("\\varPhi", "\\mathit{\\Phi}");
defineMacro("\\varPsi", "\\mathit{\\Psi}");
defineMacro("\\varOmega", "\\mathit{\\Omega}"); // \renewcommand{\colon}{\nobreak\mskip2mu\mathpunct{}\nonscript
// \mkern-\thinmuskip{:}\mskip6muplus1mu\relax}

defineMacro("\\colon", "\\nobreak\\mskip2mu\\mathpunct{}" + "\\mathchoice{\\mkern-3mu}{\\mkern-3mu}{}{}{:}\\mskip6mu"); // \newcommand{\boxed}[1]{\fbox{\m@th$\displaystyle#1$}}

defineMacro("\\boxed", "\\fbox{$\\displaystyle{#1}$}"); // \def\iff{\DOTSB\;\Longleftrightarrow\;}
// \def\implies{\DOTSB\;\Longrightarrow\;}
// \def\impliedby{\DOTSB\;\Longleftarrow\;}

defineMacro("\\iff", "\\DOTSB\\;\\Longleftrightarrow\\;");
defineMacro("\\implies", "\\DOTSB\\;\\Longrightarrow\\;");
defineMacro("\\impliedby", "\\DOTSB\\;\\Longleftarrow\\;"); // AMSMath's automatic \dots, based on \mdots@@ macro.

var dotsByToken = {
  ',': '\\dotsc',
  '\\not': '\\dotsb',
  // \keybin@ checks for the following:
  '+': '\\dotsb',
  '=': '\\dotsb',
  '<': '\\dotsb',
  '>': '\\dotsb',
  '-': '\\dotsb',
  '*': '\\dotsb',
  ':': '\\dotsb',
  // Symbols whose definition starts with \DOTSB:
  '\\DOTSB': '\\dotsb',
  '\\coprod': '\\dotsb',
  '\\bigvee': '\\dotsb',
  '\\bigwedge': '\\dotsb',
  '\\biguplus': '\\dotsb',
  '\\bigcap': '\\dotsb',
  '\\bigcup': '\\dotsb',
  '\\prod': '\\dotsb',
  '\\sum': '\\dotsb',
  '\\bigotimes': '\\dotsb',
  '\\bigoplus': '\\dotsb',
  '\\bigodot': '\\dotsb',
  '\\bigsqcup': '\\dotsb',
  '\\And': '\\dotsb',
  '\\longrightarrow': '\\dotsb',
  '\\Longrightarrow': '\\dotsb',
  '\\longleftarrow': '\\dotsb',
  '\\Longleftarrow': '\\dotsb',
  '\\longleftrightarrow': '\\dotsb',
  '\\Longleftrightarrow': '\\dotsb',
  '\\mapsto': '\\dotsb',
  '\\longmapsto': '\\dotsb',
  '\\hookrightarrow': '\\dotsb',
  '\\doteq': '\\dotsb',
  // Symbols whose definition starts with \mathbin:
  '\\mathbin': '\\dotsb',
  // Symbols whose definition starts with \mathrel:
  '\\mathrel': '\\dotsb',
  '\\relbar': '\\dotsb',
  '\\Relbar': '\\dotsb',
  '\\xrightarrow': '\\dotsb',
  '\\xleftarrow': '\\dotsb',
  // Symbols whose definition starts with \DOTSI:
  '\\DOTSI': '\\dotsi',
  '\\int': '\\dotsi',
  '\\oint': '\\dotsi',
  '\\iint': '\\dotsi',
  '\\iiint': '\\dotsi',
  '\\iiiint': '\\dotsi',
  '\\idotsint': '\\dotsi',
  // Symbols whose definition starts with \DOTSX:
  '\\DOTSX': '\\dotsx'
};
defineMacro("\\dots", function (context) {
  // TODO: If used in text mode, should expand to \textellipsis.
  // However, in KaTeX, \textellipsis and \ldots behave the same
  // (in text mode), and it's unlikely we'd see any of the math commands
  // that affect the behavior of \dots when in text mode.  So fine for now
  // (until we support \ifmmode ... \else ... \fi).
  var thedots = '\\dotso';
  var next = context.expandAfterFuture().text;

  if (next in dotsByToken) {
    thedots = dotsByToken[next];
  } else if (next.substr(0, 4) === '\\not') {
    thedots = '\\dotsb';
  } else if (next in src_symbols.math) {
    if (utils.contains(['bin', 'rel'], src_symbols.math[next].group)) {
      thedots = '\\dotsb';
    }
  }

  return thedots;
});
var spaceAfterDots = {
  // \rightdelim@ checks for the following:
  ')': true,
  ']': true,
  '\\rbrack': true,
  '\\}': true,
  '\\rbrace': true,
  '\\rangle': true,
  '\\rceil': true,
  '\\rfloor': true,
  '\\rgroup': true,
  '\\rmoustache': true,
  '\\right': true,
  '\\bigr': true,
  '\\biggr': true,
  '\\Bigr': true,
  '\\Biggr': true,
  // \extra@ also tests for the following:
  '$': true,
  // \extrap@ checks for the following:
  ';': true,
  '.': true,
  ',': true
};
defineMacro("\\dotso", function (context) {
  var next = context.future().text;

  if (next in spaceAfterDots) {
    return "\\ldots\\,";
  } else {
    return "\\ldots";
  }
});
defineMacro("\\dotsc", function (context) {
  var next = context.future().text; // \dotsc uses \extra@ but not \extrap@, instead specially checking for
  // ';' and '.', but doesn't check for ','.

  if (next in spaceAfterDots && next !== ',') {
    return "\\ldots\\,";
  } else {
    return "\\ldots";
  }
});
defineMacro("\\cdots", function (context) {
  var next = context.future().text;

  if (next in spaceAfterDots) {
    return "\\@cdots\\,";
  } else {
    return "\\@cdots";
  }
});
defineMacro("\\dotsb", "\\cdots");
defineMacro("\\dotsm", "\\cdots");
defineMacro("\\dotsi", "\\!\\cdots"); // amsmath doesn't actually define \dotsx, but \dots followed by a macro
// starting with \DOTSX implies \dotso, and then \extra@ detects this case
// and forces the added `\,`.

defineMacro("\\dotsx", "\\ldots\\,"); // \let\DOTSI\relax
// \let\DOTSB\relax
// \let\DOTSX\relax

defineMacro("\\DOTSI", "\\relax");
defineMacro("\\DOTSB", "\\relax");
defineMacro("\\DOTSX", "\\relax"); // Spacing, based on amsmath.sty's override of LaTeX defaults
// \DeclareRobustCommand{\tmspace}[3]{%
//   \ifmmode\mskip#1#2\else\kern#1#3\fi\relax}

defineMacro("\\tmspace", "\\TextOrMath{\\kern#1#3}{\\mskip#1#2}\\relax"); // \renewcommand{\,}{\tmspace+\thinmuskip{.1667em}}
// TODO: math mode should use \thinmuskip

defineMacro("\\,", "\\tmspace+{3mu}{.1667em}"); // \let\thinspace\,

defineMacro("\\thinspace", "\\,"); // \def\>{\mskip\medmuskip}
// \renewcommand{\:}{\tmspace+\medmuskip{.2222em}}
// TODO: \> and math mode of \: should use \medmuskip = 4mu plus 2mu minus 4mu

defineMacro("\\>", "\\mskip{4mu}");
defineMacro("\\:", "\\tmspace+{4mu}{.2222em}"); // \let\medspace\:

defineMacro("\\medspace", "\\:"); // \renewcommand{\;}{\tmspace+\thickmuskip{.2777em}}
// TODO: math mode should use \thickmuskip = 5mu plus 5mu

defineMacro("\\;", "\\tmspace+{5mu}{.2777em}"); // \let\thickspace\;

defineMacro("\\thickspace", "\\;"); // \renewcommand{\!}{\tmspace-\thinmuskip{.1667em}}
// TODO: math mode should use \thinmuskip

defineMacro("\\!", "\\tmspace-{3mu}{.1667em}"); // \let\negthinspace\!

defineMacro("\\negthinspace", "\\!"); // \newcommand{\negmedspace}{\tmspace-\medmuskip{.2222em}}
// TODO: math mode should use \medmuskip

defineMacro("\\negmedspace", "\\tmspace-{4mu}{.2222em}"); // \newcommand{\negthickspace}{\tmspace-\thickmuskip{.2777em}}
// TODO: math mode should use \thickmuskip

defineMacro("\\negthickspace", "\\tmspace-{5mu}{.277em}"); // \def\enspace{\kern.5em }

defineMacro("\\enspace", "\\kern.5em "); // \def\enskip{\hskip.5em\relax}

defineMacro("\\enskip", "\\hskip.5em\\relax"); // \def\quad{\hskip1em\relax}

defineMacro("\\quad", "\\hskip1em\\relax"); // \def\qquad{\hskip2em\relax}

defineMacro("\\qquad", "\\hskip2em\\relax"); // \tag@in@display form of \tag

defineMacro("\\tag", "\\@ifstar\\tag@literal\\tag@paren");
defineMacro("\\tag@paren", "\\tag@literal{({#1})}");
defineMacro("\\tag@literal", function (context) {
  if (context.macros.get("\\df@tag")) {
    throw new src_ParseError("Multiple \\tag");
  }

  return "\\gdef\\df@tag{\\text{#1}}";
}); // \renewcommand{\bmod}{\nonscript\mskip-\medmuskip\mkern5mu\mathbin
//   {\operator@font mod}\penalty900
//   \mkern5mu\nonscript\mskip-\medmuskip}
// \newcommand{\pod}[1]{\allowbreak
//   \if@display\mkern18mu\else\mkern8mu\fi(#1)}
// \renewcommand{\pmod}[1]{\pod{{\operator@font mod}\mkern6mu#1}}
// \newcommand{\mod}[1]{\allowbreak\if@display\mkern18mu
//   \else\mkern12mu\fi{\operator@font mod}\,\,#1}
// TODO: math mode should use \medmuskip = 4mu plus 2mu minus 4mu

defineMacro("\\bmod", "\\mathchoice{\\mskip1mu}{\\mskip1mu}{\\mskip5mu}{\\mskip5mu}" + "\\mathbin{\\rm mod}" + "\\mathchoice{\\mskip1mu}{\\mskip1mu}{\\mskip5mu}{\\mskip5mu}");
defineMacro("\\pod", "\\allowbreak" + "\\mathchoice{\\mkern18mu}{\\mkern8mu}{\\mkern8mu}{\\mkern8mu}(#1)");
defineMacro("\\pmod", "\\pod{{\\rm mod}\\mkern6mu#1}");
defineMacro("\\mod", "\\allowbreak" + "\\mathchoice{\\mkern18mu}{\\mkern12mu}{\\mkern12mu}{\\mkern12mu}" + "{\\rm mod}\\,\\,#1"); // \pmb    --   A simulation of bold.
// It works by typesetting three copies of the argument with small offsets.
// Ref: a rather lengthy macro in ambsy.sty

defineMacro("\\pmb", "\\html@mathml{\\@binrel{#1}{" + "\\mathrlap{#1}" + "\\mathrlap{\\mkern0.4mu\\raisebox{0.4mu}{$#1$}}" + "{\\mkern0.8mu#1}" + "}}{\\mathbf{#1}}"); //////////////////////////////////////////////////////////////////////
// LaTeX source2e
// \\ defaults to \newline, but changes to \cr within array environment

defineMacro("\\\\", "\\newline"); // \def\TeX{T\kern-.1667em\lower.5ex\hbox{E}\kern-.125emX\@}
// TODO: Doesn't normally work in math mode because \@ fails.  KaTeX doesn't
// support \@ yet, so that's omitted, and we add \text so that the result
// doesn't look funny in math mode.

defineMacro("\\TeX", "\\textrm{\\html@mathml{" + "T\\kern-.1667em\\raisebox{-.5ex}{E}\\kern-.125emX" + "}{TeX}}"); // \DeclareRobustCommand{\LaTeX}{L\kern-.36em%
//         {\sbox\z@ T%
//          \vbox to\ht\z@{\hbox{\check@mathfonts
//                               \fontsize\sf@size\z@
//                               \math@fontsfalse\selectfont
//                               A}%
//                         \vss}%
//         }%
//         \kern-.15em%
//         \TeX}
// This code aligns the top of the A with the T (from the perspective of TeX's
// boxes, though visually the A appears to extend above slightly).
// We compute the corresponding \raisebox when A is rendered at \scriptsize,
// which is size3, which has a scale factor of 0.7 (see Options.js).

var latexRaiseA = fontMetricsData['Main-Regular']["T".charCodeAt(0)][1] - 0.7 * fontMetricsData['Main-Regular']["A".charCodeAt(0)][1] + "em";
defineMacro("\\LaTeX", "\\textrm{\\html@mathml{" + ("L\\kern-.36em\\raisebox{" + latexRaiseA + "}{\\scriptsize A}") + "\\kern-.15em\\TeX}{LaTeX}}"); // New KaTeX logo based on tweaking LaTeX logo

defineMacro("\\KaTeX", "\\textrm{\\html@mathml{" + ("K\\kern-.17em\\raisebox{" + latexRaiseA + "}{\\scriptsize A}") + "\\kern-.15em\\TeX}{KaTeX}}"); // \DeclareRobustCommand\hspace{\@ifstar\@hspacer\@hspace}
// \def\@hspace#1{\hskip  #1\relax}
// \def\@hspacer#1{\vrule \@width\z@\nobreak
//                 \hskip #1\hskip \z@skip}

defineMacro("\\hspace", "\\@ifstar\\@hspacer\\@hspace");
defineMacro("\\@hspace", "\\hskip #1\\relax");
defineMacro("\\@hspacer", "\\rule{0pt}{0pt}\\hskip #1\\relax"); //////////////////////////////////////////////////////////////////////
// mathtools.sty
//\providecommand\ordinarycolon{:}

defineMacro("\\ordinarycolon", ":"); //\def\vcentcolon{\mathrel{\mathop\ordinarycolon}}
//TODO(edemaine): Not yet centered. Fix via \raisebox or #726

defineMacro("\\vcentcolon", "\\mathrel{\\mathop\\ordinarycolon}"); // \providecommand*\dblcolon{\vcentcolon\mathrel{\mkern-.9mu}\vcentcolon}

defineMacro("\\dblcolon", "\\mathrel{\\vcentcolon\\mathrel{\\mkern-.9mu}\\vcentcolon}"); // \providecommand*\coloneqq{\vcentcolon\mathrel{\mkern-1.2mu}=}

defineMacro("\\coloneqq", "\\mathrel{\\vcentcolon\\mathrel{\\mkern-1.2mu}=}"); // \providecommand*\Coloneqq{\dblcolon\mathrel{\mkern-1.2mu}=}

defineMacro("\\Coloneqq", "\\mathrel{\\dblcolon\\mathrel{\\mkern-1.2mu}=}"); // \providecommand*\coloneq{\vcentcolon\mathrel{\mkern-1.2mu}\mathrel{-}}

defineMacro("\\coloneq", "\\mathrel{\\vcentcolon\\mathrel{\\mkern-1.2mu}\\mathrel{-}}"); // \providecommand*\Coloneq{\dblcolon\mathrel{\mkern-1.2mu}\mathrel{-}}

defineMacro("\\Coloneq", "\\mathrel{\\dblcolon\\mathrel{\\mkern-1.2mu}\\mathrel{-}}"); // \providecommand*\eqqcolon{=\mathrel{\mkern-1.2mu}\vcentcolon}

defineMacro("\\eqqcolon", "\\mathrel{=\\mathrel{\\mkern-1.2mu}\\vcentcolon}"); // \providecommand*\Eqqcolon{=\mathrel{\mkern-1.2mu}\dblcolon}

defineMacro("\\Eqqcolon", "\\mathrel{=\\mathrel{\\mkern-1.2mu}\\dblcolon}"); // \providecommand*\eqcolon{\mathrel{-}\mathrel{\mkern-1.2mu}\vcentcolon}

defineMacro("\\eqcolon", "\\mathrel{\\mathrel{-}\\mathrel{\\mkern-1.2mu}\\vcentcolon}"); // \providecommand*\Eqcolon{\mathrel{-}\mathrel{\mkern-1.2mu}\dblcolon}

defineMacro("\\Eqcolon", "\\mathrel{\\mathrel{-}\\mathrel{\\mkern-1.2mu}\\dblcolon}"); // \providecommand*\colonapprox{\vcentcolon\mathrel{\mkern-1.2mu}\approx}

defineMacro("\\colonapprox", "\\mathrel{\\vcentcolon\\mathrel{\\mkern-1.2mu}\\approx}"); // \providecommand*\Colonapprox{\dblcolon\mathrel{\mkern-1.2mu}\approx}

defineMacro("\\Colonapprox", "\\mathrel{\\dblcolon\\mathrel{\\mkern-1.2mu}\\approx}"); // \providecommand*\colonsim{\vcentcolon\mathrel{\mkern-1.2mu}\sim}

defineMacro("\\colonsim", "\\mathrel{\\vcentcolon\\mathrel{\\mkern-1.2mu}\\sim}"); // \providecommand*\Colonsim{\dblcolon\mathrel{\mkern-1.2mu}\sim}

defineMacro("\\Colonsim", "\\mathrel{\\dblcolon\\mathrel{\\mkern-1.2mu}\\sim}"); // Some Unicode characters are implemented with macros to mathtools functions.

defineMacro("\u2254", "\\coloneqq"); // :=

defineMacro("\u2255", "\\eqqcolon"); // =:

defineMacro("\u2A74", "\\Coloneqq"); // ::=
//////////////////////////////////////////////////////////////////////
// colonequals.sty
// Alternate names for mathtools's macros:

defineMacro("\\ratio", "\\vcentcolon");
defineMacro("\\coloncolon", "\\dblcolon");
defineMacro("\\colonequals", "\\coloneqq");
defineMacro("\\coloncolonequals", "\\Coloneqq");
defineMacro("\\equalscolon", "\\eqqcolon");
defineMacro("\\equalscoloncolon", "\\Eqqcolon");
defineMacro("\\colonminus", "\\coloneq");
defineMacro("\\coloncolonminus", "\\Coloneq");
defineMacro("\\minuscolon", "\\eqcolon");
defineMacro("\\minuscoloncolon", "\\Eqcolon"); // \colonapprox name is same in mathtools and colonequals.

defineMacro("\\coloncolonapprox", "\\Colonapprox"); // \colonsim name is same in mathtools and colonequals.

defineMacro("\\coloncolonsim", "\\Colonsim"); // Additional macros, implemented by analogy with mathtools definitions:

defineMacro("\\simcolon", "\\mathrel{\\sim\\mathrel{\\mkern-1.2mu}\\vcentcolon}");
defineMacro("\\simcoloncolon", "\\mathrel{\\sim\\mathrel{\\mkern-1.2mu}\\dblcolon}");
defineMacro("\\approxcolon", "\\mathrel{\\approx\\mathrel{\\mkern-1.2mu}\\vcentcolon}");
defineMacro("\\approxcoloncolon", "\\mathrel{\\approx\\mathrel{\\mkern-1.2mu}\\dblcolon}"); // Present in newtxmath, pxfonts and txfonts

defineMacro("\\notni", "\\html@mathml{\\not\\ni}{\\mathrel{\\char`\u220C}}");
defineMacro("\\limsup", "\\DOTSB\\mathop{\\operatorname{lim\\,sup}}\\limits");
defineMacro("\\liminf", "\\DOTSB\\mathop{\\operatorname{lim\\,inf}}\\limits"); //////////////////////////////////////////////////////////////////////
// semantic
// The semantic package renders the next two items by calling a glyph from the
// bbold package. Those glyphs do not exist in the KaTeX fonts. Hence the macros.

defineMacro("\u27E6", "\\mathopen{[\\mkern-3.2mu[}"); // blackboard bold [

defineMacro("\u27E7", "\\mathclose{]\\mkern-3.2mu]}"); // blackboard bold ]
// TODO: Create variable sized versions of the last two items. I believe that
// will require new font glyphs.
//////////////////////////////////////////////////////////////////////
// texvc.sty
// The texvc package contains macros available in mediawiki pages.
// We omit the functions deprecated at
// https://en.wikipedia.org/wiki/Help:Displaying_a_formula#Deprecated_syntax
// We also omit texvc's \O, which conflicts with \text{\O}

defineMacro("\\darr", "\\downarrow");
defineMacro("\\dArr", "\\Downarrow");
defineMacro("\\Darr", "\\Downarrow");
defineMacro("\\lang", "\\langle");
defineMacro("\\rang", "\\rangle");
defineMacro("\\uarr", "\\uparrow");
defineMacro("\\uArr", "\\Uparrow");
defineMacro("\\Uarr", "\\Uparrow");
defineMacro("\\N", "\\mathbb{N}");
defineMacro("\\R", "\\mathbb{R}");
defineMacro("\\Z", "\\mathbb{Z}");
defineMacro("\\alef", "\\aleph");
defineMacro("\\alefsym", "\\aleph");
defineMacro("\\Alpha", "\\mathrm{A}");
defineMacro("\\Beta", "\\mathrm{B}");
defineMacro("\\bull", "\\bullet");
defineMacro("\\Chi", "\\mathrm{X}");
defineMacro("\\clubs", "\\clubsuit");
defineMacro("\\cnums", "\\mathbb{C}");
defineMacro("\\Complex", "\\mathbb{C}");
defineMacro("\\Dagger", "\\ddagger");
defineMacro("\\diamonds", "\\diamondsuit");
defineMacro("\\empty", "\\emptyset");
defineMacro("\\Epsilon", "\\mathrm{E}");
defineMacro("\\Eta", "\\mathrm{H}");
defineMacro("\\exist", "\\exists");
defineMacro("\\harr", "\\leftrightarrow");
defineMacro("\\hArr", "\\Leftrightarrow");
defineMacro("\\Harr", "\\Leftrightarrow");
defineMacro("\\hearts", "\\heartsuit");
defineMacro("\\image", "\\Im");
defineMacro("\\infin", "\\infty");
defineMacro("\\Iota", "\\mathrm{I}");
defineMacro("\\isin", "\\in");
defineMacro("\\Kappa", "\\mathrm{K}");
defineMacro("\\larr", "\\leftarrow");
defineMacro("\\lArr", "\\Leftarrow");
defineMacro("\\Larr", "\\Leftarrow");
defineMacro("\\lrarr", "\\leftrightarrow");
defineMacro("\\lrArr", "\\Leftrightarrow");
defineMacro("\\Lrarr", "\\Leftrightarrow");
defineMacro("\\Mu", "\\mathrm{M}");
defineMacro("\\natnums", "\\mathbb{N}");
defineMacro("\\Nu", "\\mathrm{N}");
defineMacro("\\Omicron", "\\mathrm{O}");
defineMacro("\\plusmn", "\\pm");
defineMacro("\\rarr", "\\rightarrow");
defineMacro("\\rArr", "\\Rightarrow");
defineMacro("\\Rarr", "\\Rightarrow");
defineMacro("\\real", "\\Re");
defineMacro("\\reals", "\\mathbb{R}");
defineMacro("\\Reals", "\\mathbb{R}");
defineMacro("\\Rho", "\\mathrm{R}");
defineMacro("\\sdot", "\\cdot");
defineMacro("\\sect", "\\S");
defineMacro("\\spades", "\\spadesuit");
defineMacro("\\sub", "\\subset");
defineMacro("\\sube", "\\subseteq");
defineMacro("\\supe", "\\supseteq");
defineMacro("\\Tau", "\\mathrm{T}");
defineMacro("\\thetasym", "\\vartheta"); // TODO: defineMacro("\\varcoppa", "\\\mbox{\\coppa}");

defineMacro("\\weierp", "\\wp");
defineMacro("\\Zeta", "\\mathrm{Z}");
// CONCATENATED MODULE: ./src/MacroExpander.js
/**
 * This file contains the “gullet” where macros are expanded
 * until only non-macro tokens remain.
 */







// List of commands that act like macros but aren't defined as a macro,
// function, or symbol.  Used in `isDefined`.
var implicitCommands = {
  "\\relax": true,
  // MacroExpander.js
  "^": true,
  // Parser.js
  "_": true,
  // Parser.js
  "\\limits": true,
  // Parser.js
  "\\nolimits": true // Parser.js

};

var MacroExpander_MacroExpander =
/*#__PURE__*/
function () {
  function MacroExpander(input, settings, mode) {
    this.settings = void 0;
    this.expansionCount = void 0;
    this.lexer = void 0;
    this.macros = void 0;
    this.stack = void 0;
    this.mode = void 0;
    this.settings = settings;
    this.expansionCount = 0;
    this.feed(input); // Make new global namespace

    this.macros = new Namespace_Namespace(macros, settings.macros);
    this.mode = mode;
    this.stack = []; // contains tokens in REVERSE order
  }
  /**
   * Feed a new input string to the same MacroExpander
   * (with existing macros etc.).
   */


  var _proto = MacroExpander.prototype;

  _proto.feed = function feed(input) {
    this.lexer = new Lexer_Lexer(input);
  };
  /**
   * Switches between "text" and "math" modes.
   */


  _proto.switchMode = function switchMode(newMode) {
    this.mode = newMode;
  };
  /**
   * Start a new group nesting within all namespaces.
   */


  _proto.beginGroup = function beginGroup() {
    this.macros.beginGroup();
  };
  /**
   * End current group nesting within all namespaces.
   */


  _proto.endGroup = function endGroup() {
    this.macros.endGroup();
  };
  /**
   * Returns the topmost token on the stack, without expanding it.
   * Similar in behavior to TeX's `\futurelet`.
   */


  _proto.future = function future() {
    if (this.stack.length === 0) {
      this.pushToken(this.lexer.lex());
    }

    return this.stack[this.stack.length - 1];
  };
  /**
   * Remove and return the next unexpanded token.
   */


  _proto.popToken = function popToken() {
    this.future(); // ensure non-empty stack

    return this.stack.pop();
  };
  /**
   * Add a given token to the token stack.  In particular, this get be used
   * to put back a token returned from one of the other methods.
   */


  _proto.pushToken = function pushToken(token) {
    this.stack.push(token);
  };
  /**
   * Append an array of tokens to the token stack.
   */


  _proto.pushTokens = function pushTokens(tokens) {
    var _this$stack;

    (_this$stack = this.stack).push.apply(_this$stack, tokens);
  };
  /**
   * Consume all following space tokens, without expansion.
   */


  _proto.consumeSpaces = function consumeSpaces() {
    for (;;) {
      var token = this.future();

      if (token.text === " ") {
        this.stack.pop();
      } else {
        break;
      }
    }
  };
  /**
   * Consume the specified number of arguments from the token stream,
   * and return the resulting array of arguments.
   */


  _proto.consumeArgs = function consumeArgs(numArgs) {
    var args = []; // obtain arguments, either single token or balanced {…} group

    for (var i = 0; i < numArgs; ++i) {
      this.consumeSpaces(); // ignore spaces before each argument

      var startOfArg = this.popToken();

      if (startOfArg.text === "{") {
        var arg = [];
        var depth = 1;

        while (depth !== 0) {
          var tok = this.popToken();
          arg.push(tok);

          if (tok.text === "{") {
            ++depth;
          } else if (tok.text === "}") {
            --depth;
          } else if (tok.text === "EOF") {
            throw new src_ParseError("End of input in macro argument", startOfArg);
          }
        }

        arg.pop(); // remove last }

        arg.reverse(); // like above, to fit in with stack order

        args[i] = arg;
      } else if (startOfArg.text === "EOF") {
        throw new src_ParseError("End of input expecting macro argument");
      } else {
        args[i] = [startOfArg];
      }
    }

    return args;
  };
  /**
   * Expand the next token only once if possible.
   *
   * If the token is expanded, the resulting tokens will be pushed onto
   * the stack in reverse order and will be returned as an array,
   * also in reverse order.
   *
   * If not, the next token will be returned without removing it
   * from the stack.  This case can be detected by a `Token` return value
   * instead of an `Array` return value.
   *
   * In either case, the next token will be on the top of the stack,
   * or the stack will be empty.
   *
   * Used to implement `expandAfterFuture` and `expandNextToken`.
   *
   * At the moment, macro expansion doesn't handle delimited macros,
   * i.e. things like those defined by \def\foo#1\end{…}.
   * See the TeX book page 202ff. for details on how those should behave.
   */


  _proto.expandOnce = function expandOnce() {
    var topToken = this.popToken();
    var name = topToken.text;

    var expansion = this._getExpansion(name);

    if (expansion == null) {
      // mainly checking for undefined here
      // Fully expanded
      this.pushToken(topToken);
      return topToken;
    }

    this.expansionCount++;

    if (this.expansionCount > this.settings.maxExpand) {
      throw new src_ParseError("Too many expansions: infinite loop or " + "need to increase maxExpand setting");
    }

    var tokens = expansion.tokens;

    if (expansion.numArgs) {
      var args = this.consumeArgs(expansion.numArgs); // paste arguments in place of the placeholders

      tokens = tokens.slice(); // make a shallow copy

      for (var i = tokens.length - 1; i >= 0; --i) {
        var tok = tokens[i];

        if (tok.text === "#") {
          if (i === 0) {
            throw new src_ParseError("Incomplete placeholder at end of macro body", tok);
          }

          tok = tokens[--i]; // next token on stack

          if (tok.text === "#") {
            // ## → #
            tokens.splice(i + 1, 1); // drop first #
          } else if (/^[1-9]$/.test(tok.text)) {
            var _tokens;

            // replace the placeholder with the indicated argument
            (_tokens = tokens).splice.apply(_tokens, [i, 2].concat(args[+tok.text - 1]));
          } else {
            throw new src_ParseError("Not a valid argument number", tok);
          }
        }
      }
    } // Concatenate expansion onto top of stack.


    this.pushTokens(tokens);
    return tokens;
  };
  /**
   * Expand the next token only once (if possible), and return the resulting
   * top token on the stack (without removing anything from the stack).
   * Similar in behavior to TeX's `\expandafter\futurelet`.
   * Equivalent to expandOnce() followed by future().
   */


  _proto.expandAfterFuture = function expandAfterFuture() {
    this.expandOnce();
    return this.future();
  };
  /**
   * Recursively expand first token, then return first non-expandable token.
   */


  _proto.expandNextToken = function expandNextToken() {
    for (;;) {
      var expanded = this.expandOnce(); // expandOnce returns Token if and only if it's fully expanded.

      if (expanded instanceof Token_Token) {
        // \relax stops the expansion, but shouldn't get returned (a
        // null return value couldn't get implemented as a function).
        if (expanded.text === "\\relax") {
          this.stack.pop();
        } else {
          return this.stack.pop(); // === expanded
        }
      }
    } // Flow unable to figure out that this pathway is impossible.
    // https://github.com/facebook/flow/issues/4808


    throw new Error(); // eslint-disable-line no-unreachable
  };
  /**
   * Fully expand the given macro name and return the resulting list of
   * tokens, or return `undefined` if no such macro is defined.
   */


  _proto.expandMacro = function expandMacro(name) {
    if (!this.macros.get(name)) {
      return undefined;
    }

    var output = [];
    var oldStackLength = this.stack.length;
    this.pushToken(new Token_Token(name));

    while (this.stack.length > oldStackLength) {
      var expanded = this.expandOnce(); // expandOnce returns Token if and only if it's fully expanded.

      if (expanded instanceof Token_Token) {
        output.push(this.stack.pop());
      }
    }

    return output;
  };
  /**
   * Fully expand the given macro name and return the result as a string,
   * or return `undefined` if no such macro is defined.
   */


  _proto.expandMacroAsText = function expandMacroAsText(name) {
    var tokens = this.expandMacro(name);

    if (tokens) {
      return tokens.map(function (token) {
        return token.text;
      }).join("");
    } else {
      return tokens;
    }
  };
  /**
   * Returns the expanded macro as a reversed array of tokens and a macro
   * argument count.  Or returns `null` if no such macro.
   */


  _proto._getExpansion = function _getExpansion(name) {
    var definition = this.macros.get(name);

    if (definition == null) {
      // mainly checking for undefined here
      return definition;
    }

    var expansion = typeof definition === "function" ? definition(this) : definition;

    if (typeof expansion === "string") {
      var numArgs = 0;

      if (expansion.indexOf("#") !== -1) {
        var stripped = expansion.replace(/##/g, "");

        while (stripped.indexOf("#" + (numArgs + 1)) !== -1) {
          ++numArgs;
        }
      }

      var bodyLexer = new Lexer_Lexer(expansion);
      var tokens = [];
      var tok = bodyLexer.lex();

      while (tok.text !== "EOF") {
        tokens.push(tok);
        tok = bodyLexer.lex();
      }

      tokens.reverse(); // to fit in with stack using push and pop

      var expanded = {
        tokens: tokens,
        numArgs: numArgs
      };
      return expanded;
    }

    return expansion;
  };
  /**
   * Determine whether a command is currently "defined" (has some
   * functionality), meaning that it's a macro (in the current group),
   * a function, a symbol, or one of the special commands listed in
   * `implicitCommands`.
   */


  _proto.isDefined = function isDefined(name) {
    return this.macros.has(name) || src_functions.hasOwnProperty(name) || src_symbols.math.hasOwnProperty(name) || src_symbols.text.hasOwnProperty(name) || implicitCommands.hasOwnProperty(name);
  };

  return MacroExpander;
}();


// CONCATENATED MODULE: ./src/unicodeAccents.js
// Mapping of Unicode accent characters to their LaTeX equivalent in text and
// math mode (when they exist).
/* harmony default export */ var unicodeAccents = ({
  "\u0301": {
    text: "\\'",
    math: '\\acute'
  },
  "\u0300": {
    text: '\\`',
    math: '\\grave'
  },
  "\u0308": {
    text: '\\"',
    math: '\\ddot'
  },
  "\u0303": {
    text: '\\~',
    math: '\\tilde'
  },
  "\u0304": {
    text: '\\=',
    math: '\\bar'
  },
  "\u0306": {
    text: "\\u",
    math: '\\breve'
  },
  "\u030C": {
    text: '\\v',
    math: '\\check'
  },
  "\u0302": {
    text: '\\^',
    math: '\\hat'
  },
  "\u0307": {
    text: '\\.',
    math: '\\dot'
  },
  "\u030A": {
    text: '\\r',
    math: '\\mathring'
  },
  "\u030B": {
    text: '\\H'
  }
});
// CONCATENATED MODULE: ./src/unicodeSymbols.js
// This file is GENERATED by unicodeMake.js. DO NOT MODIFY.
/* harmony default export */ var unicodeSymbols = ({
  "\xE1": "a\u0301",
  // á = \'{a}
  "\xE0": "a\u0300",
  // à = \`{a}
  "\xE4": "a\u0308",
  // ä = \"{a}
  "\u01DF": "a\u0308\u0304",
  // ǟ = \"\={a}
  "\xE3": "a\u0303",
  // ã = \~{a}
  "\u0101": "a\u0304",
  // ā = \={a}
  "\u0103": "a\u0306",
  // ă = \u{a}
  "\u1EAF": "a\u0306\u0301",
  // ắ = \u\'{a}
  "\u1EB1": "a\u0306\u0300",
  // ằ = \u\`{a}
  "\u1EB5": "a\u0306\u0303",
  // ẵ = \u\~{a}
  "\u01CE": "a\u030C",
  // ǎ = \v{a}
  "\xE2": "a\u0302",
  // â = \^{a}
  "\u1EA5": "a\u0302\u0301",
  // ấ = \^\'{a}
  "\u1EA7": "a\u0302\u0300",
  // ầ = \^\`{a}
  "\u1EAB": "a\u0302\u0303",
  // ẫ = \^\~{a}
  "\u0227": "a\u0307",
  // ȧ = \.{a}
  "\u01E1": "a\u0307\u0304",
  // ǡ = \.\={a}
  "\xE5": "a\u030A",
  // å = \r{a}
  "\u01FB": "a\u030A\u0301",
  // ǻ = \r\'{a}
  "\u1E03": "b\u0307",
  // ḃ = \.{b}
  "\u0107": "c\u0301",
  // ć = \'{c}
  "\u010D": "c\u030C",
  // č = \v{c}
  "\u0109": "c\u0302",
  // ĉ = \^{c}
  "\u010B": "c\u0307",
  // ċ = \.{c}
  "\u010F": "d\u030C",
  // ď = \v{d}
  "\u1E0B": "d\u0307",
  // ḋ = \.{d}
  "\xE9": "e\u0301",
  // é = \'{e}
  "\xE8": "e\u0300",
  // è = \`{e}
  "\xEB": "e\u0308",
  // ë = \"{e}
  "\u1EBD": "e\u0303",
  // ẽ = \~{e}
  "\u0113": "e\u0304",
  // ē = \={e}
  "\u1E17": "e\u0304\u0301",
  // ḗ = \=\'{e}
  "\u1E15": "e\u0304\u0300",
  // ḕ = \=\`{e}
  "\u0115": "e\u0306",
  // ĕ = \u{e}
  "\u011B": "e\u030C",
  // ě = \v{e}
  "\xEA": "e\u0302",
  // ê = \^{e}
  "\u1EBF": "e\u0302\u0301",
  // ế = \^\'{e}
  "\u1EC1": "e\u0302\u0300",
  // ề = \^\`{e}
  "\u1EC5": "e\u0302\u0303",
  // ễ = \^\~{e}
  "\u0117": "e\u0307",
  // ė = \.{e}
  "\u1E1F": "f\u0307",
  // ḟ = \.{f}
  "\u01F5": "g\u0301",
  // ǵ = \'{g}
  "\u1E21": "g\u0304",
  // ḡ = \={g}
  "\u011F": "g\u0306",
  // ğ = \u{g}
  "\u01E7": "g\u030C",
  // ǧ = \v{g}
  "\u011D": "g\u0302",
  // ĝ = \^{g}
  "\u0121": "g\u0307",
  // ġ = \.{g}
  "\u1E27": "h\u0308",
  // ḧ = \"{h}
  "\u021F": "h\u030C",
  // ȟ = \v{h}
  "\u0125": "h\u0302",
  // ĥ = \^{h}
  "\u1E23": "h\u0307",
  // ḣ = \.{h}
  "\xED": "i\u0301",
  // í = \'{i}
  "\xEC": "i\u0300",
  // ì = \`{i}
  "\xEF": "i\u0308",
  // ï = \"{i}
  "\u1E2F": "i\u0308\u0301",
  // ḯ = \"\'{i}
  "\u0129": "i\u0303",
  // ĩ = \~{i}
  "\u012B": "i\u0304",
  // ī = \={i}
  "\u012D": "i\u0306",
  // ĭ = \u{i}
  "\u01D0": "i\u030C",
  // ǐ = \v{i}
  "\xEE": "i\u0302",
  // î = \^{i}
  "\u01F0": "j\u030C",
  // ǰ = \v{j}
  "\u0135": "j\u0302",
  // ĵ = \^{j}
  "\u1E31": "k\u0301",
  // ḱ = \'{k}
  "\u01E9": "k\u030C",
  // ǩ = \v{k}
  "\u013A": "l\u0301",
  // ĺ = \'{l}
  "\u013E": "l\u030C",
  // ľ = \v{l}
  "\u1E3F": "m\u0301",
  // ḿ = \'{m}
  "\u1E41": "m\u0307",
  // ṁ = \.{m}
  "\u0144": "n\u0301",
  // ń = \'{n}
  "\u01F9": "n\u0300",
  // ǹ = \`{n}
  "\xF1": "n\u0303",
  // ñ = \~{n}
  "\u0148": "n\u030C",
  // ň = \v{n}
  "\u1E45": "n\u0307",
  // ṅ = \.{n}
  "\xF3": "o\u0301",
  // ó = \'{o}
  "\xF2": "o\u0300",
  // ò = \`{o}
  "\xF6": "o\u0308",
  // ö = \"{o}
  "\u022B": "o\u0308\u0304",
  // ȫ = \"\={o}
  "\xF5": "o\u0303",
  // õ = \~{o}
  "\u1E4D": "o\u0303\u0301",
  // ṍ = \~\'{o}
  "\u1E4F": "o\u0303\u0308",
  // ṏ = \~\"{o}
  "\u022D": "o\u0303\u0304",
  // ȭ = \~\={o}
  "\u014D": "o\u0304",
  // ō = \={o}
  "\u1E53": "o\u0304\u0301",
  // ṓ = \=\'{o}
  "\u1E51": "o\u0304\u0300",
  // ṑ = \=\`{o}
  "\u014F": "o\u0306",
  // ŏ = \u{o}
  "\u01D2": "o\u030C",
  // ǒ = \v{o}
  "\xF4": "o\u0302",
  // ô = \^{o}
  "\u1ED1": "o\u0302\u0301",
  // ố = \^\'{o}
  "\u1ED3": "o\u0302\u0300",
  // ồ = \^\`{o}
  "\u1ED7": "o\u0302\u0303",
  // ỗ = \^\~{o}
  "\u022F": "o\u0307",
  // ȯ = \.{o}
  "\u0231": "o\u0307\u0304",
  // ȱ = \.\={o}
  "\u0151": "o\u030B",
  // ő = \H{o}
  "\u1E55": "p\u0301",
  // ṕ = \'{p}
  "\u1E57": "p\u0307",
  // ṗ = \.{p}
  "\u0155": "r\u0301",
  // ŕ = \'{r}
  "\u0159": "r\u030C",
  // ř = \v{r}
  "\u1E59": "r\u0307",
  // ṙ = \.{r}
  "\u015B": "s\u0301",
  // ś = \'{s}
  "\u1E65": "s\u0301\u0307",
  // ṥ = \'\.{s}
  "\u0161": "s\u030C",
  // š = \v{s}
  "\u1E67": "s\u030C\u0307",
  // ṧ = \v\.{s}
  "\u015D": "s\u0302",
  // ŝ = \^{s}
  "\u1E61": "s\u0307",
  // ṡ = \.{s}
  "\u1E97": "t\u0308",
  // ẗ = \"{t}
  "\u0165": "t\u030C",
  // ť = \v{t}
  "\u1E6B": "t\u0307",
  // ṫ = \.{t}
  "\xFA": "u\u0301",
  // ú = \'{u}
  "\xF9": "u\u0300",
  // ù = \`{u}
  "\xFC": "u\u0308",
  // ü = \"{u}
  "\u01D8": "u\u0308\u0301",
  // ǘ = \"\'{u}
  "\u01DC": "u\u0308\u0300",
  // ǜ = \"\`{u}
  "\u01D6": "u\u0308\u0304",
  // ǖ = \"\={u}
  "\u01DA": "u\u0308\u030C",
  // ǚ = \"\v{u}
  "\u0169": "u\u0303",
  // ũ = \~{u}
  "\u1E79": "u\u0303\u0301",
  // ṹ = \~\'{u}
  "\u016B": "u\u0304",
  // ū = \={u}
  "\u1E7B": "u\u0304\u0308",
  // ṻ = \=\"{u}
  "\u016D": "u\u0306",
  // ŭ = \u{u}
  "\u01D4": "u\u030C",
  // ǔ = \v{u}
  "\xFB": "u\u0302",
  // û = \^{u}
  "\u016F": "u\u030A",
  // ů = \r{u}
  "\u0171": "u\u030B",
  // ű = \H{u}
  "\u1E7D": "v\u0303",
  // ṽ = \~{v}
  "\u1E83": "w\u0301",
  // ẃ = \'{w}
  "\u1E81": "w\u0300",
  // ẁ = \`{w}
  "\u1E85": "w\u0308",
  // ẅ = \"{w}
  "\u0175": "w\u0302",
  // ŵ = \^{w}
  "\u1E87": "w\u0307",
  // ẇ = \.{w}
  "\u1E98": "w\u030A",
  // ẘ = \r{w}
  "\u1E8D": "x\u0308",
  // ẍ = \"{x}
  "\u1E8B": "x\u0307",
  // ẋ = \.{x}
  "\xFD": "y\u0301",
  // ý = \'{y}
  "\u1EF3": "y\u0300",
  // ỳ = \`{y}
  "\xFF": "y\u0308",
  // ÿ = \"{y}
  "\u1EF9": "y\u0303",
  // ỹ = \~{y}
  "\u0233": "y\u0304",
  // ȳ = \={y}
  "\u0177": "y\u0302",
  // ŷ = \^{y}
  "\u1E8F": "y\u0307",
  // ẏ = \.{y}
  "\u1E99": "y\u030A",
  // ẙ = \r{y}
  "\u017A": "z\u0301",
  // ź = \'{z}
  "\u017E": "z\u030C",
  // ž = \v{z}
  "\u1E91": "z\u0302",
  // ẑ = \^{z}
  "\u017C": "z\u0307",
  // ż = \.{z}
  "\xC1": "A\u0301",
  // Á = \'{A}
  "\xC0": "A\u0300",
  // À = \`{A}
  "\xC4": "A\u0308",
  // Ä = \"{A}
  "\u01DE": "A\u0308\u0304",
  // Ǟ = \"\={A}
  "\xC3": "A\u0303",
  // Ã = \~{A}
  "\u0100": "A\u0304",
  // Ā = \={A}
  "\u0102": "A\u0306",
  // Ă = \u{A}
  "\u1EAE": "A\u0306\u0301",
  // Ắ = \u\'{A}
  "\u1EB0": "A\u0306\u0300",
  // Ằ = \u\`{A}
  "\u1EB4": "A\u0306\u0303",
  // Ẵ = \u\~{A}
  "\u01CD": "A\u030C",
  // Ǎ = \v{A}
  "\xC2": "A\u0302",
  // Â = \^{A}
  "\u1EA4": "A\u0302\u0301",
  // Ấ = \^\'{A}
  "\u1EA6": "A\u0302\u0300",
  // Ầ = \^\`{A}
  "\u1EAA": "A\u0302\u0303",
  // Ẫ = \^\~{A}
  "\u0226": "A\u0307",
  // Ȧ = \.{A}
  "\u01E0": "A\u0307\u0304",
  // Ǡ = \.\={A}
  "\xC5": "A\u030A",
  // Å = \r{A}
  "\u01FA": "A\u030A\u0301",
  // Ǻ = \r\'{A}
  "\u1E02": "B\u0307",
  // Ḃ = \.{B}
  "\u0106": "C\u0301",
  // Ć = \'{C}
  "\u010C": "C\u030C",
  // Č = \v{C}
  "\u0108": "C\u0302",
  // Ĉ = \^{C}
  "\u010A": "C\u0307",
  // Ċ = \.{C}
  "\u010E": "D\u030C",
  // Ď = \v{D}
  "\u1E0A": "D\u0307",
  // Ḋ = \.{D}
  "\xC9": "E\u0301",
  // É = \'{E}
  "\xC8": "E\u0300",
  // È = \`{E}
  "\xCB": "E\u0308",
  // Ë = \"{E}
  "\u1EBC": "E\u0303",
  // Ẽ = \~{E}
  "\u0112": "E\u0304",
  // Ē = \={E}
  "\u1E16": "E\u0304\u0301",
  // Ḗ = \=\'{E}
  "\u1E14": "E\u0304\u0300",
  // Ḕ = \=\`{E}
  "\u0114": "E\u0306",
  // Ĕ = \u{E}
  "\u011A": "E\u030C",
  // Ě = \v{E}
  "\xCA": "E\u0302",
  // Ê = \^{E}
  "\u1EBE": "E\u0302\u0301",
  // Ế = \^\'{E}
  "\u1EC0": "E\u0302\u0300",
  // Ề = \^\`{E}
  "\u1EC4": "E\u0302\u0303",
  // Ễ = \^\~{E}
  "\u0116": "E\u0307",
  // Ė = \.{E}
  "\u1E1E": "F\u0307",
  // Ḟ = \.{F}
  "\u01F4": "G\u0301",
  // Ǵ = \'{G}
  "\u1E20": "G\u0304",
  // Ḡ = \={G}
  "\u011E": "G\u0306",
  // Ğ = \u{G}
  "\u01E6": "G\u030C",
  // Ǧ = \v{G}
  "\u011C": "G\u0302",
  // Ĝ = \^{G}
  "\u0120": "G\u0307",
  // Ġ = \.{G}
  "\u1E26": "H\u0308",
  // Ḧ = \"{H}
  "\u021E": "H\u030C",
  // Ȟ = \v{H}
  "\u0124": "H\u0302",
  // Ĥ = \^{H}
  "\u1E22": "H\u0307",
  // Ḣ = \.{H}
  "\xCD": "I\u0301",
  // Í = \'{I}
  "\xCC": "I\u0300",
  // Ì = \`{I}
  "\xCF": "I\u0308",
  // Ï = \"{I}
  "\u1E2E": "I\u0308\u0301",
  // Ḯ = \"\'{I}
  "\u0128": "I\u0303",
  // Ĩ = \~{I}
  "\u012A": "I\u0304",
  // Ī = \={I}
  "\u012C": "I\u0306",
  // Ĭ = \u{I}
  "\u01CF": "I\u030C",
  // Ǐ = \v{I}
  "\xCE": "I\u0302",
  // Î = \^{I}
  "\u0130": "I\u0307",
  // İ = \.{I}
  "\u0134": "J\u0302",
  // Ĵ = \^{J}
  "\u1E30": "K\u0301",
  // Ḱ = \'{K}
  "\u01E8": "K\u030C",
  // Ǩ = \v{K}
  "\u0139": "L\u0301",
  // Ĺ = \'{L}
  "\u013D": "L\u030C",
  // Ľ = \v{L}
  "\u1E3E": "M\u0301",
  // Ḿ = \'{M}
  "\u1E40": "M\u0307",
  // Ṁ = \.{M}
  "\u0143": "N\u0301",
  // Ń = \'{N}
  "\u01F8": "N\u0300",
  // Ǹ = \`{N}
  "\xD1": "N\u0303",
  // Ñ = \~{N}
  "\u0147": "N\u030C",
  // Ň = \v{N}
  "\u1E44": "N\u0307",
  // Ṅ = \.{N}
  "\xD3": "O\u0301",
  // Ó = \'{O}
  "\xD2": "O\u0300",
  // Ò = \`{O}
  "\xD6": "O\u0308",
  // Ö = \"{O}
  "\u022A": "O\u0308\u0304",
  // Ȫ = \"\={O}
  "\xD5": "O\u0303",
  // Õ = \~{O}
  "\u1E4C": "O\u0303\u0301",
  // Ṍ = \~\'{O}
  "\u1E4E": "O\u0303\u0308",
  // Ṏ = \~\"{O}
  "\u022C": "O\u0303\u0304",
  // Ȭ = \~\={O}
  "\u014C": "O\u0304",
  // Ō = \={O}
  "\u1E52": "O\u0304\u0301",
  // Ṓ = \=\'{O}
  "\u1E50": "O\u0304\u0300",
  // Ṑ = \=\`{O}
  "\u014E": "O\u0306",
  // Ŏ = \u{O}
  "\u01D1": "O\u030C",
  // Ǒ = \v{O}
  "\xD4": "O\u0302",
  // Ô = \^{O}
  "\u1ED0": "O\u0302\u0301",
  // Ố = \^\'{O}
  "\u1ED2": "O\u0302\u0300",
  // Ồ = \^\`{O}
  "\u1ED6": "O\u0302\u0303",
  // Ỗ = \^\~{O}
  "\u022E": "O\u0307",
  // Ȯ = \.{O}
  "\u0230": "O\u0307\u0304",
  // Ȱ = \.\={O}
  "\u0150": "O\u030B",
  // Ő = \H{O}
  "\u1E54": "P\u0301",
  // Ṕ = \'{P}
  "\u1E56": "P\u0307",
  // Ṗ = \.{P}
  "\u0154": "R\u0301",
  // Ŕ = \'{R}
  "\u0158": "R\u030C",
  // Ř = \v{R}
  "\u1E58": "R\u0307",
  // Ṙ = \.{R}
  "\u015A": "S\u0301",
  // Ś = \'{S}
  "\u1E64": "S\u0301\u0307",
  // Ṥ = \'\.{S}
  "\u0160": "S\u030C",
  // Š = \v{S}
  "\u1E66": "S\u030C\u0307",
  // Ṧ = \v\.{S}
  "\u015C": "S\u0302",
  // Ŝ = \^{S}
  "\u1E60": "S\u0307",
  // Ṡ = \.{S}
  "\u0164": "T\u030C",
  // Ť = \v{T}
  "\u1E6A": "T\u0307",
  // Ṫ = \.{T}
  "\xDA": "U\u0301",
  // Ú = \'{U}
  "\xD9": "U\u0300",
  // Ù = \`{U}
  "\xDC": "U\u0308",
  // Ü = \"{U}
  "\u01D7": "U\u0308\u0301",
  // Ǘ = \"\'{U}
  "\u01DB": "U\u0308\u0300",
  // Ǜ = \"\`{U}
  "\u01D5": "U\u0308\u0304",
  // Ǖ = \"\={U}
  "\u01D9": "U\u0308\u030C",
  // Ǚ = \"\v{U}
  "\u0168": "U\u0303",
  // Ũ = \~{U}
  "\u1E78": "U\u0303\u0301",
  // Ṹ = \~\'{U}
  "\u016A": "U\u0304",
  // Ū = \={U}
  "\u1E7A": "U\u0304\u0308",
  // Ṻ = \=\"{U}
  "\u016C": "U\u0306",
  // Ŭ = \u{U}
  "\u01D3": "U\u030C",
  // Ǔ = \v{U}
  "\xDB": "U\u0302",
  // Û = \^{U}
  "\u016E": "U\u030A",
  // Ů = \r{U}
  "\u0170": "U\u030B",
  // Ű = \H{U}
  "\u1E7C": "V\u0303",
  // Ṽ = \~{V}
  "\u1E82": "W\u0301",
  // Ẃ = \'{W}
  "\u1E80": "W\u0300",
  // Ẁ = \`{W}
  "\u1E84": "W\u0308",
  // Ẅ = \"{W}
  "\u0174": "W\u0302",
  // Ŵ = \^{W}
  "\u1E86": "W\u0307",
  // Ẇ = \.{W}
  "\u1E8C": "X\u0308",
  // Ẍ = \"{X}
  "\u1E8A": "X\u0307",
  // Ẋ = \.{X}
  "\xDD": "Y\u0301",
  // Ý = \'{Y}
  "\u1EF2": "Y\u0300",
  // Ỳ = \`{Y}
  "\u0178": "Y\u0308",
  // Ÿ = \"{Y}
  "\u1EF8": "Y\u0303",
  // Ỹ = \~{Y}
  "\u0232": "Y\u0304",
  // Ȳ = \={Y}
  "\u0176": "Y\u0302",
  // Ŷ = \^{Y}
  "\u1E8E": "Y\u0307",
  // Ẏ = \.{Y}
  "\u0179": "Z\u0301",
  // Ź = \'{Z}
  "\u017D": "Z\u030C",
  // Ž = \v{Z}
  "\u1E90": "Z\u0302",
  // Ẑ = \^{Z}
  "\u017B": "Z\u0307",
  // Ż = \.{Z}
  "\u03AC": "\u03B1\u0301",
  // ά = \'{α}
  "\u1F70": "\u03B1\u0300",
  // ὰ = \`{α}
  "\u1FB1": "\u03B1\u0304",
  // ᾱ = \={α}
  "\u1FB0": "\u03B1\u0306",
  // ᾰ = \u{α}
  "\u03AD": "\u03B5\u0301",
  // έ = \'{ε}
  "\u1F72": "\u03B5\u0300",
  // ὲ = \`{ε}
  "\u03AE": "\u03B7\u0301",
  // ή = \'{η}
  "\u1F74": "\u03B7\u0300",
  // ὴ = \`{η}
  "\u03AF": "\u03B9\u0301",
  // ί = \'{ι}
  "\u1F76": "\u03B9\u0300",
  // ὶ = \`{ι}
  "\u03CA": "\u03B9\u0308",
  // ϊ = \"{ι}
  "\u0390": "\u03B9\u0308\u0301",
  // ΐ = \"\'{ι}
  "\u1FD2": "\u03B9\u0308\u0300",
  // ῒ = \"\`{ι}
  "\u1FD1": "\u03B9\u0304",
  // ῑ = \={ι}
  "\u1FD0": "\u03B9\u0306",
  // ῐ = \u{ι}
  "\u03CC": "\u03BF\u0301",
  // ό = \'{ο}
  "\u1F78": "\u03BF\u0300",
  // ὸ = \`{ο}
  "\u03CD": "\u03C5\u0301",
  // ύ = \'{υ}
  "\u1F7A": "\u03C5\u0300",
  // ὺ = \`{υ}
  "\u03CB": "\u03C5\u0308",
  // ϋ = \"{υ}
  "\u03B0": "\u03C5\u0308\u0301",
  // ΰ = \"\'{υ}
  "\u1FE2": "\u03C5\u0308\u0300",
  // ῢ = \"\`{υ}
  "\u1FE1": "\u03C5\u0304",
  // ῡ = \={υ}
  "\u1FE0": "\u03C5\u0306",
  // ῠ = \u{υ}
  "\u03CE": "\u03C9\u0301",
  // ώ = \'{ω}
  "\u1F7C": "\u03C9\u0300",
  // ὼ = \`{ω}
  "\u038E": "\u03A5\u0301",
  // Ύ = \'{Υ}
  "\u1FEA": "\u03A5\u0300",
  // Ὺ = \`{Υ}
  "\u03AB": "\u03A5\u0308",
  // Ϋ = \"{Υ}
  "\u1FE9": "\u03A5\u0304",
  // Ῡ = \={Υ}
  "\u1FE8": "\u03A5\u0306",
  // Ῠ = \u{Υ}
  "\u038F": "\u03A9\u0301",
  // Ώ = \'{Ω}
  "\u1FFA": "\u03A9\u0300" // Ὼ = \`{Ω}

});
// CONCATENATED MODULE: ./src/Parser.js
/* eslint no-constant-condition:0 */















/**
 * This file contains the parser used to parse out a TeX expression from the
 * input. Since TeX isn't context-free, standard parsers don't work particularly
 * well.
 *
 * The strategy of this parser is as such:
 *
 * The main functions (the `.parse...` ones) take a position in the current
 * parse string to parse tokens from. The lexer (found in Lexer.js, stored at
 * this.gullet.lexer) also supports pulling out tokens at arbitrary places. When
 * individual tokens are needed at a position, the lexer is called to pull out a
 * token, which is then used.
 *
 * The parser has a property called "mode" indicating the mode that
 * the parser is currently in. Currently it has to be one of "math" or
 * "text", which denotes whether the current environment is a math-y
 * one or a text-y one (e.g. inside \text). Currently, this serves to
 * limit the functions which can be used in text mode.
 *
 * The main functions then return an object which contains the useful data that
 * was parsed at its given point, and a new position at the end of the parsed
 * data. The main functions can call each other and continue the parsing by
 * using the returned position as a new starting point.
 *
 * There are also extra `.handle...` functions, which pull out some reused
 * functionality into self-contained functions.
 *
 * The functions return ParseNodes.
 */
var Parser_Parser =
/*#__PURE__*/
function () {
  function Parser(input, settings) {
    this.mode = void 0;
    this.gullet = void 0;
    this.settings = void 0;
    this.leftrightDepth = void 0;
    this.nextToken = void 0;
    // Start in math mode
    this.mode = "math"; // Create a new macro expander (gullet) and (indirectly via that) also a
    // new lexer (mouth) for this parser (stomach, in the language of TeX)

    this.gullet = new MacroExpander_MacroExpander(input, settings, this.mode); // Store the settings for use in parsing

    this.settings = settings; // Count leftright depth (for \middle errors)

    this.leftrightDepth = 0;
  }
  /**
   * Checks a result to make sure it has the right type, and throws an
   * appropriate error otherwise.
   */


  var _proto = Parser.prototype;

  _proto.expect = function expect(text, consume) {
    if (consume === void 0) {
      consume = true;
    }

    if (this.nextToken.text !== text) {
      throw new src_ParseError("Expected '" + text + "', got '" + this.nextToken.text + "'", this.nextToken);
    }

    if (consume) {
      this.consume();
    }
  };
  /**
   * Considers the current look ahead token as consumed,
   * and fetches the one after that as the new look ahead.
   */


  _proto.consume = function consume() {
    this.nextToken = this.gullet.expandNextToken();
  };
  /**
   * Switches between "text" and "math" modes.
   */


  _proto.switchMode = function switchMode(newMode) {
    this.mode = newMode;
    this.gullet.switchMode(newMode);
  };
  /**
   * Main parsing function, which parses an entire input.
   */


  _proto.parse = function parse() {
    // Create a group namespace for the math expression.
    // (LaTeX creates a new group for every $...$, $$...$$, \[...\].)
    this.gullet.beginGroup(); // Use old \color behavior (same as LaTeX's \textcolor) if requested.
    // We do this within the group for the math expression, so it doesn't
    // pollute settings.macros.

    if (this.settings.colorIsTextColor) {
      this.gullet.macros.set("\\color", "\\textcolor");
    } // Try to parse the input


    this.consume();
    var parse = this.parseExpression(false); // If we succeeded, make sure there's an EOF at the end

    this.expect("EOF", false); // End the group namespace for the expression

    this.gullet.endGroup();
    return parse;
  };

  /**
   * Parses an "expression", which is a list of atoms.
   *
   * `breakOnInfix`: Should the parsing stop when we hit infix nodes? This
   *                 happens when functions have higher precendence han infix
   *                 nodes in implicit parses.
   *
   * `breakOnTokenText`: The text of the token that the expression should end
   *                     with, or `null` if something else should end the
   *                     expression.
   */
  _proto.parseExpression = function parseExpression(breakOnInfix, breakOnTokenText) {
    var body = []; // Keep adding atoms to the body until we can't parse any more atoms (either
    // we reached the end, a }, or a \right)

    while (true) {
      // Ignore spaces in math mode
      if (this.mode === "math") {
        this.consumeSpaces();
      }

      var lex = this.nextToken;

      if (Parser.endOfExpression.indexOf(lex.text) !== -1) {
        break;
      }

      if (breakOnTokenText && lex.text === breakOnTokenText) {
        break;
      }

      if (breakOnInfix && src_functions[lex.text] && src_functions[lex.text].infix) {
        break;
      }

      var atom = this.parseAtom(breakOnTokenText);

      if (!atom) {
        break;
      }

      body.push(atom);
    }

    if (this.mode === "text") {
      this.formLigatures(body);
    }

    return this.handleInfixNodes(body);
  };
  /**
   * Rewrites infix operators such as \over with corresponding commands such
   * as \frac.
   *
   * There can only be one infix operator per group.  If there's more than one
   * then the expression is ambiguous.  This can be resolved by adding {}.
   */


  _proto.handleInfixNodes = function handleInfixNodes(body) {
    var overIndex = -1;
    var funcName;

    for (var i = 0; i < body.length; i++) {
      var node = checkNodeType(body[i], "infix");

      if (node) {
        if (overIndex !== -1) {
          throw new src_ParseError("only one infix operator per group", node.token);
        }

        overIndex = i;
        funcName = node.replaceWith;
      }
    }

    if (overIndex !== -1 && funcName) {
      var numerNode;
      var denomNode;
      var numerBody = body.slice(0, overIndex);
      var denomBody = body.slice(overIndex + 1);

      if (numerBody.length === 1 && numerBody[0].type === "ordgroup") {
        numerNode = numerBody[0];
      } else {
        numerNode = {
          type: "ordgroup",
          mode: this.mode,
          body: numerBody
        };
      }

      if (denomBody.length === 1 && denomBody[0].type === "ordgroup") {
        denomNode = denomBody[0];
      } else {
        denomNode = {
          type: "ordgroup",
          mode: this.mode,
          body: denomBody
        };
      }

      var _node;

      if (funcName === "\\\\abovefrac") {
        _node = this.callFunction(funcName, [numerNode, body[overIndex], denomNode], []);
      } else {
        _node = this.callFunction(funcName, [numerNode, denomNode], []);
      }

      return [_node];
    } else {
      return body;
    }
  }; // The greediness of a superscript or subscript


  /**
   * Handle a subscript or superscript with nice errors.
   */
  _proto.handleSupSubscript = function handleSupSubscript(name) {
    var symbolToken = this.nextToken;
    var symbol = symbolToken.text;
    this.consume();
    this.consumeSpaces(); // ignore spaces before sup/subscript argument

    var group = this.parseGroup(name, false, Parser.SUPSUB_GREEDINESS);

    if (!group) {
      throw new src_ParseError("Expected group after '" + symbol + "'", symbolToken);
    }

    return group;
  };
  /**
   * Converts the textual input of an unsupported command into a text node
   * contained within a color node whose color is determined by errorColor
   */


  _proto.handleUnsupportedCmd = function handleUnsupportedCmd() {
    var text = this.nextToken.text;
    var textordArray = [];

    for (var i = 0; i < text.length; i++) {
      textordArray.push({
        type: "textord",
        mode: "text",
        text: text[i]
      });
    }

    var textNode = {
      type: "text",
      mode: this.mode,
      body: textordArray
    };
    var colorNode = {
      type: "color",
      mode: this.mode,
      color: this.settings.errorColor,
      body: [textNode]
    };
    this.consume();
    return colorNode;
  };
  /**
   * Parses a group with optional super/subscripts.
   */


  _proto.parseAtom = function parseAtom(breakOnTokenText) {
    // The body of an atom is an implicit group, so that things like
    // \left(x\right)^2 work correctly.
    var base = this.parseGroup("atom", false, null, breakOnTokenText); // In text mode, we don't have superscripts or subscripts

    if (this.mode === "text") {
      return base;
    } // Note that base may be empty (i.e. null) at this point.


    var superscript;
    var subscript;

    while (true) {
      // Guaranteed in math mode, so eat any spaces first.
      this.consumeSpaces(); // Lex the first token

      var lex = this.nextToken;

      if (lex.text === "\\limits" || lex.text === "\\nolimits") {
        // We got a limit control
        var opNode = checkNodeType(base, "op");

        if (opNode) {
          var limits = lex.text === "\\limits";
          opNode.limits = limits;
          opNode.alwaysHandleSupSub = true;
        } else {
          throw new src_ParseError("Limit controls must follow a math operator", lex);
        }

        this.consume();
      } else if (lex.text === "^") {
        // We got a superscript start
        if (superscript) {
          throw new src_ParseError("Double superscript", lex);
        }

        superscript = this.handleSupSubscript("superscript");
      } else if (lex.text === "_") {
        // We got a subscript start
        if (subscript) {
          throw new src_ParseError("Double subscript", lex);
        }

        subscript = this.handleSupSubscript("subscript");
      } else if (lex.text === "'") {
        // We got a prime
        if (superscript) {
          throw new src_ParseError("Double superscript", lex);
        }

        var prime = {
          type: "textord",
          mode: this.mode,
          text: "\\prime"
        }; // Many primes can be grouped together, so we handle this here

        var primes = [prime];
        this.consume(); // Keep lexing tokens until we get something that's not a prime

        while (this.nextToken.text === "'") {
          // For each one, add another prime to the list
          primes.push(prime);
          this.consume();
        } // If there's a superscript following the primes, combine that
        // superscript in with the primes.


        if (this.nextToken.text === "^") {
          primes.push(this.handleSupSubscript("superscript"));
        } // Put everything into an ordgroup as the superscript


        superscript = {
          type: "ordgroup",
          mode: this.mode,
          body: primes
        };
      } else if (lex.text === "%") {
        this.consumeComment();
      } else {
        // If it wasn't ^, _, or ', stop parsing super/subscripts
        break;
      }
    } // Base must be set if superscript or subscript are set per logic above,
    // but need to check here for type check to pass.


    if (superscript || subscript) {
      // If we got either a superscript or subscript, create a supsub
      return {
        type: "supsub",
        mode: this.mode,
        base: base,
        sup: superscript,
        sub: subscript
      };
    } else {
      // Otherwise return the original body
      return base;
    }
  };
  /**
   * Parses an entire function, including its base and all of its arguments.
   */


  _proto.parseFunction = function parseFunction(breakOnTokenText, name, // For error reporting.
  greediness) {
    var token = this.nextToken;
    var func = token.text;
    var funcData = src_functions[func];

    if (!funcData) {
      return null;
    }

    if (greediness != null && funcData.greediness <= greediness) {
      throw new src_ParseError("Got function '" + func + "' with no arguments" + (name ? " as " + name : ""), token);
    } else if (this.mode === "text" && !funcData.allowedInText) {
      throw new src_ParseError("Can't use function '" + func + "' in text mode", token);
    } else if (this.mode === "math" && funcData.allowedInMath === false) {
      throw new src_ParseError("Can't use function '" + func + "' in math mode", token);
    } // Consume the command token after possibly switching to the
    // mode specified by the function (for instant mode switching),
    // and then immediately switch back.


    if (funcData.consumeMode) {
      var oldMode = this.mode;
      this.switchMode(funcData.consumeMode);
      this.consume();
      this.switchMode(oldMode);
    } else {
      this.consume();
    }

    var _this$parseArguments = this.parseArguments(func, funcData),
        args = _this$parseArguments.args,
        optArgs = _this$parseArguments.optArgs;

    return this.callFunction(func, args, optArgs, token, breakOnTokenText);
  };
  /**
   * Call a function handler with a suitable context and arguments.
   */


  _proto.callFunction = function callFunction(name, args, optArgs, token, breakOnTokenText) {
    var context = {
      funcName: name,
      parser: this,
      token: token,
      breakOnTokenText: breakOnTokenText
    };
    var func = src_functions[name];

    if (func && func.handler) {
      return func.handler(context, args, optArgs);
    } else {
      throw new src_ParseError("No function handler for " + name);
    }
  };
  /**
   * Parses the arguments of a function or environment
   */


  _proto.parseArguments = function parseArguments(func, // Should look like "\name" or "\begin{name}".
  funcData) {
    var totalArgs = funcData.numArgs + funcData.numOptionalArgs;

    if (totalArgs === 0) {
      return {
        args: [],
        optArgs: []
      };
    }

    var baseGreediness = funcData.greediness;
    var args = [];
    var optArgs = [];

    for (var i = 0; i < totalArgs; i++) {
      var argType = funcData.argTypes && funcData.argTypes[i];
      var isOptional = i < funcData.numOptionalArgs; // Ignore spaces between arguments.  As the TeXbook says:
      // "After you have said ‘\def\row#1#2{...}’, you are allowed to
      //  put spaces between the arguments (e.g., ‘\row x n’), because
      //  TeX doesn’t use single spaces as undelimited arguments."

      if (i > 0 && !isOptional) {
        this.consumeSpaces();
      } // Also consume leading spaces in math mode, as parseSymbol
      // won't know what to do with them.  This can only happen with
      // macros, e.g. \frac\foo\foo where \foo expands to a space symbol.
      // In LaTeX, the \foo's get treated as (blank) arguments).
      // In KaTeX, for now, both spaces will get consumed.
      // TODO(edemaine)


      if (i === 0 && !isOptional && this.mode === "math") {
        this.consumeSpaces();
      }

      var nextToken = this.nextToken;
      var arg = this.parseGroupOfType("argument to '" + func + "'", argType, isOptional, baseGreediness);

      if (!arg) {
        if (isOptional) {
          optArgs.push(null);
          continue;
        }

        throw new src_ParseError("Expected group after '" + func + "'", nextToken);
      }

      (isOptional ? optArgs : args).push(arg);
    }

    return {
      args: args,
      optArgs: optArgs
    };
  };
  /**
   * Parses a group when the mode is changing.
   */


  _proto.parseGroupOfType = function parseGroupOfType(name, type, optional, greediness) {
    switch (type) {
      case "color":
        return this.parseColorGroup(optional);

      case "size":
        return this.parseSizeGroup(optional);

      case "url":
        return this.parseUrlGroup(optional);

      case "math":
      case "text":
        return this.parseGroup(name, optional, greediness, undefined, type);

      case "original":
      case null:
      case undefined:
        return this.parseGroup(name, optional, greediness);

      default:
        throw new src_ParseError("Unknown group type as " + name, this.nextToken);
    }
  };

  _proto.consumeSpaces = function consumeSpaces() {
    while (this.nextToken.text === " ") {
      this.consume();
    }
  };

  _proto.consumeComment = function consumeComment() {
    // the newline character is normalized in Lexer, check original source
    while (this.nextToken.text !== "EOF" && this.nextToken.loc && this.nextToken.loc.getSource().indexOf("\n") === -1) {
      this.consume();
    }

    if (this.nextToken.text === "EOF") {
      this.settings.reportNonstrict("commentAtEnd", "% comment has no terminating newline; LaTeX would " + "fail because of commenting the end of math mode (e.g. $)");
    }

    if (this.mode === "math") {
      this.consumeSpaces(); // ignore spaces in math mode
    } else if (this.nextToken.loc) {
      // text mode
      var source = this.nextToken.loc.getSource();

      if (source.indexOf("\n") === source.length - 1) {
        this.consumeSpaces(); // if no space after the first newline
      }
    }
  };
  /**
   * Parses a group, essentially returning the string formed by the
   * brace-enclosed tokens plus some position information.
   */


  _proto.parseStringGroup = function parseStringGroup(modeName, // Used to describe the mode in error messages.
  optional, raw) {
    var groupBegin = optional ? "[" : "{";
    var groupEnd = optional ? "]" : "}";
    var nextToken = this.nextToken;

    if (nextToken.text !== groupBegin) {
      if (optional) {
        return null;
      } else if (raw && nextToken.text !== "EOF" && /[^{}[\]]/.test(nextToken.text)) {
        // allow a single character in raw string group
        this.consume();
        return nextToken;
      }
    }

    var outerMode = this.mode;
    this.mode = "text";
    this.expect(groupBegin);
    var str = "";
    var firstToken = this.nextToken;
    var nested = 0; // allow nested braces in raw string group

    var lastToken = firstToken;

    while (raw && nested > 0 || this.nextToken.text !== groupEnd) {
      switch (this.nextToken.text) {
        case "EOF":
          throw new src_ParseError("Unexpected end of input in " + modeName, firstToken.range(lastToken, str));

        case "%":
          if (!raw) {
            // allow % in raw string group
            this.consumeComment();
            continue;
          }

          break;

        case groupBegin:
          nested++;
          break;

        case groupEnd:
          nested--;
          break;
      }

      lastToken = this.nextToken;
      str += lastToken.text;
      this.consume();
    }

    this.mode = outerMode;
    this.expect(groupEnd);
    return firstToken.range(lastToken, str);
  };
  /**
   * Parses a regex-delimited group: the largest sequence of tokens
   * whose concatenated strings match `regex`. Returns the string
   * formed by the tokens plus some position information.
   */


  _proto.parseRegexGroup = function parseRegexGroup(regex, modeName) {
    var outerMode = this.mode;
    this.mode = "text";
    var firstToken = this.nextToken;
    var lastToken = firstToken;
    var str = "";

    while (this.nextToken.text !== "EOF" && (regex.test(str + this.nextToken.text) || this.nextToken.text === "%")) {
      if (this.nextToken.text === "%") {
        this.consumeComment();
        continue;
      }

      lastToken = this.nextToken;
      str += lastToken.text;
      this.consume();
    }

    if (str === "") {
      throw new src_ParseError("Invalid " + modeName + ": '" + firstToken.text + "'", firstToken);
    }

    this.mode = outerMode;
    return firstToken.range(lastToken, str);
  };
  /**
   * Parses a color description.
   */


  _proto.parseColorGroup = function parseColorGroup(optional) {
    var res = this.parseStringGroup("color", optional);

    if (!res) {
      return null;
    }

    var match = /^(#[a-f0-9]{3}|#?[a-f0-9]{6}|[a-z]+)$/i.exec(res.text);

    if (!match) {
      throw new src_ParseError("Invalid color: '" + res.text + "'", res);
    }

    var color = match[0];

    if (/^[0-9a-f]{6}$/i.test(color)) {
      // We allow a 6-digit HTML color spec without a leading "#".
      // This follows the xcolor package's HTML color model.
      // Predefined color names are all missed by this RegEx pattern.
      color = "#" + color;
    }

    return {
      type: "color-token",
      mode: this.mode,
      color: color
    };
  };
  /**
   * Parses a size specification, consisting of magnitude and unit.
   */


  _proto.parseSizeGroup = function parseSizeGroup(optional) {
    var res;
    var isBlank = false;

    if (!optional && this.nextToken.text !== "{") {
      res = this.parseRegexGroup(/^[-+]? *(?:$|\d+|\d+\.\d*|\.\d*) *[a-z]{0,2} *$/, "size");
    } else {
      res = this.parseStringGroup("size", optional);
    }

    if (!res) {
      return null;
    }

    if (!optional && res.text.length === 0) {
      // Because we've tested for what is !optional, this block won't
      // affect \kern, \hspace, etc. It will capture the mandatory arguments
      // to \genfrac and \above.
      res.text = "0pt"; // Enable \above{}

      isBlank = true; // This is here specifically for \genfrac
    }

    var match = /([-+]?) *(\d+(?:\.\d*)?|\.\d+) *([a-z]{2})/.exec(res.text);

    if (!match) {
      throw new src_ParseError("Invalid size: '" + res.text + "'", res);
    }

    var data = {
      number: +(match[1] + match[2]),
      // sign + magnitude, cast to number
      unit: match[3]
    };

    if (!validUnit(data)) {
      throw new src_ParseError("Invalid unit: '" + data.unit + "'", res);
    }

    return {
      type: "size",
      mode: this.mode,
      value: data,
      isBlank: isBlank
    };
  };
  /**
   * Parses an URL, checking escaped letters and allowed protocols.
   */


  _proto.parseUrlGroup = function parseUrlGroup(optional) {
    var res = this.parseStringGroup("url", optional, true); // get raw string

    if (!res) {
      return null;
    } // hyperref package allows backslashes alone in href, but doesn't
    // generate valid links in such cases; we interpret this as
    // "undefined" behaviour, and keep them as-is. Some browser will
    // replace backslashes with forward slashes.


    var url = res.text.replace(/\\([#$%&~_^{}])/g, '$1');
    var protocol = /^\s*([^\\/#]*?)(?::|&#0*58|&#x0*3a)/i.exec(url);
    protocol = protocol != null ? protocol[1] : "_relative";
    var allowed = this.settings.allowedProtocols;

    if (!utils.contains(allowed, "*") && !utils.contains(allowed, protocol)) {
      throw new src_ParseError("Forbidden protocol '" + protocol + "'", res);
    }

    return {
      type: "url",
      mode: this.mode,
      url: url
    };
  };
  /**
   * If `optional` is false or absent, this parses an ordinary group,
   * which is either a single nucleus (like "x") or an expression
   * in braces (like "{x+y}") or an implicit group, a group that starts
   * at the current position, and ends right before a higher explicit
   * group ends, or at EOF.
   * If `optional` is true, it parses either a bracket-delimited expression
   * (like "[x+y]") or returns null to indicate the absence of a
   * bracket-enclosed group.
   * If `mode` is present, switches to that mode while parsing the group,
   * and switches back after.
   */


  _proto.parseGroup = function parseGroup(name, // For error reporting.
  optional, greediness, breakOnTokenText, mode) {
    var outerMode = this.mode;
    var firstToken = this.nextToken;
    var text = firstToken.text; // Switch to specified mode

    if (mode) {
      this.switchMode(mode);
    }

    var result; // Try to parse an open brace

    if (text === (optional ? "[" : "{")) {
      // Start a new group namespace
      this.gullet.beginGroup(); // If we get a brace, parse an expression

      this.consume();
      var expression = this.parseExpression(false, optional ? "]" : "}");
      var lastToken = this.nextToken; // Switch mode back before consuming symbol after close brace

      if (mode) {
        this.switchMode(outerMode);
      } // End group namespace before consuming symbol after close brace


      this.gullet.endGroup(); // Make sure we get a close brace

      this.expect(optional ? "]" : "}");
      return {
        type: "ordgroup",
        mode: this.mode,
        loc: SourceLocation.range(firstToken, lastToken),
        body: expression
      };
    } else if (optional) {
      // Return nothing for an optional group
      result = null;
    } else {
      // If there exists a function with this name, parse the function.
      // Otherwise, just return a nucleus
      result = this.parseFunction(breakOnTokenText, name, greediness) || this.parseSymbol();

      if (result == null && text[0] === "\\" && !implicitCommands.hasOwnProperty(text)) {
        if (this.settings.throwOnError) {
          throw new src_ParseError("Undefined control sequence: " + text, firstToken);
        }

        result = this.handleUnsupportedCmd();
      }
    } // Switch mode back


    if (mode) {
      this.switchMode(outerMode);
    }

    return result;
  };
  /**
   * Form ligature-like combinations of characters for text mode.
   * This includes inputs like "--", "---", "``" and "''".
   * The result will simply replace multiple textord nodes with a single
   * character in each value by a single textord node having multiple
   * characters in its value.  The representation is still ASCII source.
   * The group will be modified in place.
   */


  _proto.formLigatures = function formLigatures(group) {
    var n = group.length - 1;

    for (var i = 0; i < n; ++i) {
      var a = group[i]; // $FlowFixMe: Not every node type has a `text` property.

      var v = a.text;

      if (v === "-" && group[i + 1].text === "-") {
        if (i + 1 < n && group[i + 2].text === "-") {
          group.splice(i, 3, {
            type: "textord",
            mode: "text",
            loc: SourceLocation.range(a, group[i + 2]),
            text: "---"
          });
          n -= 2;
        } else {
          group.splice(i, 2, {
            type: "textord",
            mode: "text",
            loc: SourceLocation.range(a, group[i + 1]),
            text: "--"
          });
          n -= 1;
        }
      }

      if ((v === "'" || v === "`") && group[i + 1].text === v) {
        group.splice(i, 2, {
          type: "textord",
          mode: "text",
          loc: SourceLocation.range(a, group[i + 1]),
          text: v + v
        });
        n -= 1;
      }
    }
  };
  /**
   * Parse a single symbol out of the string. Here, we handle single character
   * symbols and special functions like verbatim
   */


  _proto.parseSymbol = function parseSymbol() {
    var nucleus = this.nextToken;
    var text = nucleus.text;

    if (/^\\verb[^a-zA-Z]/.test(text)) {
      this.consume();
      var arg = text.slice(5);
      var star = arg.charAt(0) === "*";

      if (star) {
        arg = arg.slice(1);
      } // Lexer's tokenRegex is constructed to always have matching
      // first/last characters.


      if (arg.length < 2 || arg.charAt(0) !== arg.slice(-1)) {
        throw new src_ParseError("\\verb assertion failed --\n                    please report what input caused this bug");
      }

      arg = arg.slice(1, -1); // remove first and last char

      return {
        type: "verb",
        mode: "text",
        body: arg,
        star: star
      };
    } else if (text === "%") {
      this.consumeComment();
      return this.parseSymbol();
    } // At this point, we should have a symbol, possibly with accents.
    // First expand any accented base symbol according to unicodeSymbols.


    if (unicodeSymbols.hasOwnProperty(text[0]) && !src_symbols[this.mode][text[0]]) {
      // This behavior is not strict (XeTeX-compatible) in math mode.
      if (this.settings.strict && this.mode === "math") {
        this.settings.reportNonstrict("unicodeTextInMathMode", "Accented Unicode text character \"" + text[0] + "\" used in " + "math mode", nucleus);
      }

      text = unicodeSymbols[text[0]] + text.substr(1);
    } // Strip off any combining characters


    var match = combiningDiacriticalMarksEndRegex.exec(text);

    if (match) {
      text = text.substring(0, match.index);

      if (text === 'i') {
        text = "\u0131"; // dotless i, in math and text mode
      } else if (text === 'j') {
        text = "\u0237"; // dotless j, in math and text mode
      }
    } // Recognize base symbol


    var symbol;

    if (src_symbols[this.mode][text]) {
      if (this.settings.strict && this.mode === 'math' && extraLatin.indexOf(text) >= 0) {
        this.settings.reportNonstrict("unicodeTextInMathMode", "Latin-1/Unicode text character \"" + text[0] + "\" used in " + "math mode", nucleus);
      }

      var group = src_symbols[this.mode][text].group;
      var loc = SourceLocation.range(nucleus);
      var s;

      if (ATOMS.hasOwnProperty(group)) {
        // $FlowFixMe
        var family = group;
        s = {
          type: "atom",
          mode: this.mode,
          family: family,
          loc: loc,
          text: text
        };
      } else {
        // $FlowFixMe
        s = {
          type: group,
          mode: this.mode,
          loc: loc,
          text: text
        };
      }

      symbol = s;
    } else if (text.charCodeAt(0) >= 0x80) {
      // no symbol for e.g. ^
      if (this.settings.strict) {
        if (!supportedCodepoint(text.charCodeAt(0))) {
          this.settings.reportNonstrict("unknownSymbol", "Unrecognized Unicode character \"" + text[0] + "\"" + (" (" + text.charCodeAt(0) + ")"), nucleus);
        } else if (this.mode === "math") {
          this.settings.reportNonstrict("unicodeTextInMathMode", "Unicode text character \"" + text[0] + "\" used in math mode", nucleus);
        }
      }

      symbol = {
        type: "textord",
        mode: this.mode,
        loc: SourceLocation.range(nucleus),
        text: text
      };
    } else {
      return null; // EOF, ^, _, {, }, etc.
    }

    this.consume(); // Transform combining characters into accents

    if (match) {
      for (var i = 0; i < match[0].length; i++) {
        var accent = match[0][i];

        if (!unicodeAccents[accent]) {
          throw new src_ParseError("Unknown accent ' " + accent + "'", nucleus);
        }

        var command = unicodeAccents[accent][this.mode];

        if (!command) {
          throw new src_ParseError("Accent " + accent + " unsupported in " + this.mode + " mode", nucleus);
        }

        symbol = {
          type: "accent",
          mode: this.mode,
          loc: SourceLocation.range(nucleus),
          label: command,
          isStretchy: false,
          isShifty: true,
          base: symbol
        };
      }
    }

    return symbol;
  };

  return Parser;
}();

Parser_Parser.endOfExpression = ["}", "\\end", "\\right", "&"];
Parser_Parser.SUPSUB_GREEDINESS = 1;

// CONCATENATED MODULE: ./src/parseTree.js
/**
 * Provides a single function for parsing an expression using a Parser
 * TODO(emily): Remove this
 */



/**
 * Parses an expression using a Parser, then returns the parsed result.
 */
var parseTree_parseTree = function parseTree(toParse, settings) {
  if (!(typeof toParse === 'string' || toParse instanceof String)) {
    throw new TypeError('KaTeX can only parse string typed expression');
  }

  var parser = new Parser_Parser(toParse, settings); // Blank out any \df@tag to avoid spurious "Duplicate \tag" errors

  delete parser.gullet.macros.current["\\df@tag"];
  var tree = parser.parse(); // If the input used \tag, it will set the \df@tag macro to the tag.
  // In this case, we separately parse the tag and wrap the tree.

  if (parser.gullet.macros.get("\\df@tag")) {
    if (!settings.displayMode) {
      throw new src_ParseError("\\tag works only in display equations");
    }

    parser.gullet.feed("\\df@tag");
    tree = [{
      type: "tag",
      mode: "text",
      body: tree,
      tag: parser.parse()
    }];
  }

  return tree;
};

/* harmony default export */ var src_parseTree = (parseTree_parseTree);
// CONCATENATED MODULE: ./katex.js
/* eslint no-console:0 */

/**
 * This is the main entry point for KaTeX. Here, we expose functions for
 * rendering expressions either to DOM nodes or to markup strings.
 *
 * We also expose the ParseError class to check if errors thrown from KaTeX are
 * errors in the expression, or errors in javascript handling.
 */










/**
 * Parse and build an expression, and place that expression in the DOM node
 * given.
 */
var katex_render = function render(expression, baseNode, options) {
  baseNode.textContent = "";
  var node = katex_renderToDomTree(expression, options).toNode();
  baseNode.appendChild(node);
}; // KaTeX's styles don't work properly in quirks mode. Print out an error, and
// disable rendering.


if (typeof document !== "undefined") {
  if (document.compatMode !== "CSS1Compat") {
    typeof console !== "undefined" && console.warn("Warning: KaTeX doesn't work in quirks mode. Make sure your " + "website has a suitable doctype.");

    katex_render = function render() {
      throw new src_ParseError("KaTeX doesn't work in quirks mode.");
    };
  }
}
/**
 * Parse and build an expression, and return the markup for that.
 */


var renderToString = function renderToString(expression, options) {
  var markup = katex_renderToDomTree(expression, options).toMarkup();
  return markup;
};
/**
 * Parse an expression and return the parse tree.
 */


var katex_generateParseTree = function generateParseTree(expression, options) {
  var settings = new src_Settings(options);
  return src_parseTree(expression, settings);
};
/**
 * If the given error is a KaTeX ParseError and options.throwOnError is false,
 * renders the invalid LaTeX as a span with hover title giving the KaTeX
 * error message.  Otherwise, simply throws the error.
 */


var katex_renderError = function renderError(error, expression, options) {
  if (options.throwOnError || !(error instanceof src_ParseError)) {
    throw error;
  }

  var node = buildCommon.makeSpan(["katex-error"], [new domTree_SymbolNode(expression)]);
  node.setAttribute("title", error.toString());
  node.setAttribute("style", "color:" + options.errorColor);
  return node;
};
/**
 * Generates and returns the katex build tree. This is used for advanced
 * use cases (like rendering to custom output).
 */


var katex_renderToDomTree = function renderToDomTree(expression, options) {
  var settings = new src_Settings(options);

  try {
    var tree = src_parseTree(expression, settings);
    return buildTree_buildTree(tree, expression, settings);
  } catch (error) {
    return katex_renderError(error, expression, settings);
  }
};
/**
 * Generates and returns the katex build tree, with just HTML (no MathML).
 * This is used for advanced use cases (like rendering to custom output).
 */


var katex_renderToHTMLTree = function renderToHTMLTree(expression, options) {
  var settings = new src_Settings(options);

  try {
    var tree = src_parseTree(expression, settings);
    return buildTree_buildHTMLTree(tree, expression, settings);
  } catch (error) {
    return katex_renderError(error, expression, settings);
  }
};

/* harmony default export */ var katex_0 = ({
  /**
   * Current KaTeX version
   */
  version: "0.10.0",

  /**
   * Renders the given LaTeX into an HTML+MathML combination, and adds
   * it as a child to the specified DOM node.
   */
  render: katex_render,

  /**
   * Renders the given LaTeX into an HTML+MathML combination string,
   * for sending to the client.
   */
  renderToString: renderToString,

  /**
   * KaTeX error, usually during parsing.
   */
  ParseError: src_ParseError,

  /**
   * Parses the given LaTeX into KaTeX's internal parse tree structure,
   * without rendering to HTML or MathML.
   *
   * NOTE: This method is not currently recommended for public use.
   * The internal tree representation is unstable and is very likely
   * to change. Use at your own risk.
   */
  __parse: katex_generateParseTree,

  /**
   * Renders the given LaTeX into an HTML+MathML internal DOM tree
   * representation, without flattening that representation to a string.
   *
   * NOTE: This method is not currently recommended for public use.
   * The internal tree representation is unstable and is very likely
   * to change. Use at your own risk.
   */
  __renderToDomTree: katex_renderToDomTree,

  /**
   * Renders the given LaTeX into an HTML internal DOM tree representation,
   * without MathML and without flattening that representation to a string.
   *
   * NOTE: This method is not currently recommended for public use.
   * The internal tree representation is unstable and is very likely
   * to change. Use at your own risk.
   */
  __renderToHTMLTree: katex_renderToHTMLTree,

  /**
   * extends internal font metrics object with a new object
   * each key in the new object represents a font name
  */
  __setFontMetrics: setFontMetrics,

  /**
   * adds a new symbol to builtin symbols table
   */
  __defineSymbol: defineSymbol,

  /**
   * adds a new macro to builtin macro list
   */
  __defineMacro: defineMacro,

  /**
   * Expose the dom tree node types, which can be useful for type checking nodes.
   *
   * NOTE: This method is not currently recommended for public use.
   * The internal tree representation is unstable and is very likely
   * to change. Use at your own risk.
   */
  __domTree: {
    Span: domTree_Span,
    Anchor: domTree_Anchor,
    SymbolNode: domTree_SymbolNode,
    SvgNode: SvgNode,
    PathNode: domTree_PathNode,
    LineNode: LineNode
  }
});
// CONCATENATED MODULE: ./katex.webpack.js
/**
 * This is the webpack entry point for KaTeX. As flow[1] and jest[2] doesn't support
 * CSS modules natively, a separate entry point is used and it is not flowtyped.
 *
 * [1] https://gist.github.com/lambdahands/d19e0da96285b749f0ef
 * [2] https://facebook.github.io/jest/docs/en/webpack.html
 */


/* harmony default export */ var katex_webpack = __webpack_exports__["default"] = (katex_0);

/***/ })
/******/ ])["default"];
});
});

var katex$1 = unwrapExports(katex);

var autoRender = createCommonjsModule(function (module, exports) {
(function webpackUniversalModuleDefinition(root, factory) {
	module.exports = factory(katex);
})((typeof self !== 'undefined' ? self : commonjsGlobal), function(__WEBPACK_EXTERNAL_MODULE__0__) {
return /******/ (function(modules) { // webpackBootstrap
/******/ 	// The module cache
/******/ 	var installedModules = {};
/******/
/******/ 	// The require function
/******/ 	function __webpack_require__(moduleId) {
/******/
/******/ 		// Check if module is in cache
/******/ 		if(installedModules[moduleId]) {
/******/ 			return installedModules[moduleId].exports;
/******/ 		}
/******/ 		// Create a new module (and put it into the cache)
/******/ 		var module = installedModules[moduleId] = {
/******/ 			i: moduleId,
/******/ 			l: false,
/******/ 			exports: {}
/******/ 		};
/******/
/******/ 		// Execute the module function
/******/ 		modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
/******/
/******/ 		// Flag the module as loaded
/******/ 		module.l = true;
/******/
/******/ 		// Return the exports of the module
/******/ 		return module.exports;
/******/ 	}
/******/
/******/
/******/ 	// expose the modules object (__webpack_modules__)
/******/ 	__webpack_require__.m = modules;
/******/
/******/ 	// expose the module cache
/******/ 	__webpack_require__.c = installedModules;
/******/
/******/ 	// define getter function for harmony exports
/******/ 	__webpack_require__.d = function(exports, name, getter) {
/******/ 		if(!__webpack_require__.o(exports, name)) {
/******/ 			Object.defineProperty(exports, name, { enumerable: true, get: getter });
/******/ 		}
/******/ 	};
/******/
/******/ 	// define __esModule on exports
/******/ 	__webpack_require__.r = function(exports) {
/******/ 		if(typeof Symbol !== 'undefined' && Symbol.toStringTag) {
/******/ 			Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
/******/ 		}
/******/ 		Object.defineProperty(exports, '__esModule', { value: true });
/******/ 	};
/******/
/******/ 	// create a fake namespace object
/******/ 	// mode & 1: value is a module id, require it
/******/ 	// mode & 2: merge all properties of value into the ns
/******/ 	// mode & 4: return value when already ns object
/******/ 	// mode & 8|1: behave like require
/******/ 	__webpack_require__.t = function(value, mode) {
/******/ 		if(mode & 1) value = __webpack_require__(value);
/******/ 		if(mode & 8) return value;
/******/ 		if((mode & 4) && typeof value === 'object' && value && value.__esModule) return value;
/******/ 		var ns = Object.create(null);
/******/ 		__webpack_require__.r(ns);
/******/ 		Object.defineProperty(ns, 'default', { enumerable: true, value: value });
/******/ 		if(mode & 2 && typeof value != 'string') for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));
/******/ 		return ns;
/******/ 	};
/******/
/******/ 	// getDefaultExport function for compatibility with non-harmony modules
/******/ 	__webpack_require__.n = function(module) {
/******/ 		var getter = module && module.__esModule ?
/******/ 			function getDefault() { return module['default']; } :
/******/ 			function getModuleExports() { return module; };
/******/ 		__webpack_require__.d(getter, 'a', getter);
/******/ 		return getter;
/******/ 	};
/******/
/******/ 	// Object.prototype.hasOwnProperty.call
/******/ 	__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
/******/
/******/ 	// __webpack_public_path__
/******/ 	__webpack_require__.p = "";
/******/
/******/
/******/ 	// Load entry module and return exports
/******/ 	return __webpack_require__(__webpack_require__.s = 1);
/******/ })
/************************************************************************/
/******/ ([
/* 0 */
/***/ (function(module, exports) {

module.exports = __WEBPACK_EXTERNAL_MODULE__0__;

/***/ }),
/* 1 */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);

// EXTERNAL MODULE: external "katex"
var external_katex_ = __webpack_require__(0);
var external_katex_default = /*#__PURE__*/__webpack_require__.n(external_katex_);

// CONCATENATED MODULE: ./contrib/auto-render/splitAtDelimiters.js
/* eslint no-constant-condition:0 */
var findEndOfMath = function findEndOfMath(delimiter, text, startIndex) {
  // Adapted from
  // https://github.com/Khan/perseus/blob/master/src/perseus-markdown.jsx
  var index = startIndex;
  var braceLevel = 0;
  var delimLength = delimiter.length;

  while (index < text.length) {
    var character = text[index];

    if (braceLevel <= 0 && text.slice(index, index + delimLength) === delimiter) {
      return index;
    } else if (character === "\\") {
      index++;
    } else if (character === "{") {
      braceLevel++;
    } else if (character === "}") {
      braceLevel--;
    }

    index++;
  }

  return -1;
};

var splitAtDelimiters = function splitAtDelimiters(startData, leftDelim, rightDelim, display) {
  var finalData = [];

  for (var i = 0; i < startData.length; i++) {
    if (startData[i].type === "text") {
      var text = startData[i].data;
      var lookingForLeft = true;
      var currIndex = 0;
      var nextIndex = void 0;
      nextIndex = text.indexOf(leftDelim);

      if (nextIndex !== -1) {
        currIndex = nextIndex;
        finalData.push({
          type: "text",
          data: text.slice(0, currIndex)
        });
        lookingForLeft = false;
      }

      while (true) {
        if (lookingForLeft) {
          nextIndex = text.indexOf(leftDelim, currIndex);

          if (nextIndex === -1) {
            break;
          }

          finalData.push({
            type: "text",
            data: text.slice(currIndex, nextIndex)
          });
          currIndex = nextIndex;
        } else {
          nextIndex = findEndOfMath(rightDelim, text, currIndex + leftDelim.length);

          if (nextIndex === -1) {
            break;
          }

          finalData.push({
            type: "math",
            data: text.slice(currIndex + leftDelim.length, nextIndex),
            rawData: text.slice(currIndex, nextIndex + rightDelim.length),
            display: display
          });
          currIndex = nextIndex + rightDelim.length;
        }

        lookingForLeft = !lookingForLeft;
      }

      finalData.push({
        type: "text",
        data: text.slice(currIndex)
      });
    } else {
      finalData.push(startData[i]);
    }
  }

  return finalData;
};

/* harmony default export */ var auto_render_splitAtDelimiters = (splitAtDelimiters);
// CONCATENATED MODULE: ./contrib/auto-render/auto-render.js
/* eslint no-console:0 */



var auto_render_splitWithDelimiters = function splitWithDelimiters(text, delimiters) {
  var data = [{
    type: "text",
    data: text
  }];

  for (var i = 0; i < delimiters.length; i++) {
    var delimiter = delimiters[i];
    data = auto_render_splitAtDelimiters(data, delimiter.left, delimiter.right, delimiter.display || false);
  }

  return data;
};
/* Note: optionsCopy is mutated by this method. If it is ever exposed in the
 * API, we should copy it before mutating.
 */


var auto_render_renderMathInText = function renderMathInText(text, optionsCopy) {
  var data = auto_render_splitWithDelimiters(text, optionsCopy.delimiters);
  var fragment = document.createDocumentFragment();

  for (var i = 0; i < data.length; i++) {
    if (data[i].type === "text") {
      fragment.appendChild(document.createTextNode(data[i].data));
    } else {
      var span = document.createElement("span");
      var math = data[i].data; // Override any display mode defined in the settings with that
      // defined by the text itself

      optionsCopy.displayMode = data[i].display;

      try {
        external_katex_default.a.render(math, span, optionsCopy);
      } catch (e) {
        if (!(e instanceof external_katex_default.a.ParseError)) {
          throw e;
        }

        optionsCopy.errorCallback("KaTeX auto-render: Failed to parse `" + data[i].data + "` with ", e);
        fragment.appendChild(document.createTextNode(data[i].rawData));
        continue;
      }

      fragment.appendChild(span);
    }
  }

  return fragment;
};

var renderElem = function renderElem(elem, optionsCopy) {
  for (var i = 0; i < elem.childNodes.length; i++) {
    var childNode = elem.childNodes[i];

    if (childNode.nodeType === 3) {
      // Text node
      var frag = auto_render_renderMathInText(childNode.textContent, optionsCopy);
      i += frag.childNodes.length - 1;
      elem.replaceChild(frag, childNode);
    } else if (childNode.nodeType === 1) {
      (function () {
        // Element node
        var className = ' ' + childNode.className + ' ';
        var shouldRender = optionsCopy.ignoredTags.indexOf(childNode.nodeName.toLowerCase()) === -1 && optionsCopy.ignoredClasses.every(function (x) {
          return className.indexOf(' ' + x + ' ') === -1;
        });

        if (shouldRender) {
          renderElem(childNode, optionsCopy);
        }
      })();
    } // Otherwise, it's something else, and ignore it.

  }
};

var renderMathInElement = function renderMathInElement(elem, options) {
  if (!elem) {
    throw new Error("No element provided to render");
  }

  var optionsCopy = {}; // Object.assign(optionsCopy, option)

  for (var option in options) {
    if (options.hasOwnProperty(option)) {
      optionsCopy[option] = options[option];
    }
  } // default options


  optionsCopy.delimiters = optionsCopy.delimiters || [{
    left: "$$",
    right: "$$",
    display: true
  }, {
    left: "\\(",
    right: "\\)",
    display: false
  }, // LaTeX uses $…$, but it ruins the display of normal `$` in text:
  // {left: "$", right: "$", display: false},
  //  \[…\] must come last in this array. Otherwise, renderMathInElement
  //  will search for \[ before it searches for $$ or  \(
  // That makes it susceptible to finding a \\[0.3em] row delimiter and
  // treating it as if it were the start of a KaTeX math zone.
  {
    left: "\\[",
    right: "\\]",
    display: true
  }];
  optionsCopy.ignoredTags = optionsCopy.ignoredTags || ["script", "noscript", "style", "textarea", "pre", "code"];
  optionsCopy.ignoredClasses = optionsCopy.ignoredClasses || [];
  optionsCopy.errorCallback = optionsCopy.errorCallback || console.error; // Enable sharing of global macros defined via `\gdef` between different
  // math elements within a single call to `renderMathInElement`.

  optionsCopy.macros = optionsCopy.macros || {};
  renderElem(elem, optionsCopy);
};

/* harmony default export */ var auto_render = __webpack_exports__["default"] = (renderMathInElement);

/***/ })
/******/ ])["default"];
});
});

var renderMathInElement = unwrapExports(autoRender);

var asyncGenerator = function () {
  function AwaitValue(value) {
    this.value = value;
  }

  function AsyncGenerator(gen) {
    var front, back;

    function send(key, arg) {
      return new Promise(function (resolve, reject) {
        var request = {
          key: key,
          arg: arg,
          resolve: resolve,
          reject: reject,
          next: null
        };

        if (back) {
          back = back.next = request;
        } else {
          front = back = request;
          resume(key, arg);
        }
      });
    }

    function resume(key, arg) {
      try {
        var result = gen[key](arg);
        var value = result.value;

        if (value instanceof AwaitValue) {
          Promise.resolve(value.value).then(function (arg) {
            resume("next", arg);
          }, function (arg) {
            resume("throw", arg);
          });
        } else {
          settle(result.done ? "return" : "normal", result.value);
        }
      } catch (err) {
        settle("throw", err);
      }
    }

    function settle(type, value) {
      switch (type) {
        case "return":
          front.resolve({
            value: value,
            done: true
          });
          break;

        case "throw":
          front.reject(value);
          break;

        default:
          front.resolve({
            value: value,
            done: false
          });
          break;
      }

      front = front.next;

      if (front) {
        resume(front.key, front.arg);
      } else {
        back = null;
      }
    }

    this._invoke = send;

    if (typeof gen.return !== "function") {
      this.return = undefined;
    }
  }

  if (typeof Symbol === "function" && Symbol.asyncIterator) {
    AsyncGenerator.prototype[Symbol.asyncIterator] = function () {
      return this;
    };
  }

  AsyncGenerator.prototype.next = function (arg) {
    return this._invoke("next", arg);
  };

  AsyncGenerator.prototype.throw = function (arg) {
    return this._invoke("throw", arg);
  };

  AsyncGenerator.prototype.return = function (arg) {
    return this._invoke("return", arg);
  };

  return {
    wrap: function (fn) {
      return function () {
        return new AsyncGenerator(fn.apply(this, arguments));
      };
    },
    await: function (value) {
      return new AwaitValue(value);
    }
  };
}();















var _extends = Object.assign || function (target) {
  for (var i = 1; i < arguments.length; i++) {
    var source = arguments[i];

    for (var key in source) {
      if (Object.prototype.hasOwnProperty.call(source, key)) {
        target[key] = source[key];
      }
    }
  }

  return target;
};



































var toConsumableArray = function (arr) {
  if (Array.isArray(arr)) {
    for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) arr2[i] = arr[i];

    return arr2;
  } else {
    return Array.from(arr);
  }
};

/** !
Based on ASCIIMathTeXImg.js but now part of https://github.com/obedm503/showdown-katex

Based on ASCIIMathML, Version 1.4.7 Aug 30, 2005, (c) Peter Jipsen http://www.chapman.edu/~jipsen
Modified with TeX conversion for IMG rendering Sept 6, 2006 (c) David Lippman http://www.pierce.ctc.edu/dlippman
  Updated to match ver 2.2 Mar 3, 2014
  Latest at https://github.com/mathjax/asciimathml

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the 'Software'), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/

// token types
var tokens = {
  CONST: 0,
  UNARY: 1,
  BINARY: 2,
  INFIX: 3,
  LEFTBRACKET: 4,
  RIGHTBRACKET: 5,
  SPACE: 6,
  UNDEROVER: 7,
  DEFINITION: 8,
  LEFTRIGHT: 9,
  TEXT: 10
};

var quoteSymbol = {
  input: "'",
  tag: 'mtext',
  output: 'mbox',
  tex: null,
  ttype: tokens.TEXT
};

var symbols = [
// some greek symbols
{
  input: 'alpha',
  tag: 'mi',
  output: '\u03B1',
  tex: null,
  ttype: tokens.CONST
}, {
  input: 'beta',
  tag: 'mi',
  output: '\u03B2',
  tex: null,
  ttype: tokens.CONST
}, { input: 'chi', tag: 'mi', output: '\u03C7', tex: null, ttype: tokens.CONST }, {
  input: 'delta',
  tag: 'mi',
  output: '\u03B4',
  tex: null,
  ttype: tokens.CONST
}, {
  input: 'Delta',
  tag: 'mo',
  output: '\u0394',
  tex: null,
  ttype: tokens.CONST
}, {
  input: 'epsi',
  tag: 'mi',
  output: '\u03B5',
  tex: 'epsilon',
  ttype: tokens.CONST
}, {
  input: 'varepsilon',
  tag: 'mi',
  output: '\u025B',
  tex: null,
  ttype: tokens.CONST
}, { input: 'eta', tag: 'mi', output: '\u03B7', tex: null, ttype: tokens.CONST }, {
  input: 'gamma',
  tag: 'mi',
  output: '\u03B3',
  tex: null,
  ttype: tokens.CONST
}, {
  input: 'Gamma',
  tag: 'mo',
  output: '\u0393',
  tex: null,
  ttype: tokens.CONST
}, {
  input: 'iota',
  tag: 'mi',
  output: '\u03B9',
  tex: null,
  ttype: tokens.CONST
}, {
  input: 'kappa',
  tag: 'mi',
  output: '\u03BA',
  tex: null,
  ttype: tokens.CONST
}, {
  input: 'lambda',
  tag: 'mi',
  output: '\u03BB',
  tex: null,
  ttype: tokens.CONST
}, {
  input: 'Lambda',
  tag: 'mo',
  output: '\u039B',
  tex: null,
  ttype: tokens.CONST
}, {
  input: 'lamda',
  tag: 'mi',
  output: 'lambda',
  tex: null,
  ttype: tokens.DEFINITION
}, {
  input: 'Lamda',
  tag: 'mi',
  output: 'Lambda',
  tex: null,
  ttype: tokens.DEFINITION
}, { input: 'mu', tag: 'mi', output: '\u03BC', tex: null, ttype: tokens.CONST }, { input: 'nu', tag: 'mi', output: '\u03BD', tex: null, ttype: tokens.CONST }, {
  input: 'omega',
  tag: 'mi',
  output: '\u03C9',
  tex: null,
  ttype: tokens.CONST
}, {
  input: 'Omega',
  tag: 'mo',
  output: '\u03A9',
  tex: null,
  ttype: tokens.CONST
}, { input: 'phi', tag: 'mi', output: '\u03C6', tex: null, ttype: tokens.CONST }, {
  input: 'varphi',
  tag: 'mi',
  output: '\u03D5',
  tex: null,
  ttype: tokens.CONST
}, { input: 'Phi', tag: 'mo', output: '\u03A6', tex: null, ttype: tokens.CONST }, { input: 'pi', tag: 'mi', output: '\u03C0', tex: null, ttype: tokens.CONST }, { input: 'Pi', tag: 'mo', output: '\u03A0', tex: null, ttype: tokens.CONST }, { input: 'psi', tag: 'mi', output: '\u03C8', tex: null, ttype: tokens.CONST }, { input: 'Psi', tag: 'mi', output: '\u03A8', tex: null, ttype: tokens.CONST }, { input: 'rho', tag: 'mi', output: '\u03C1', tex: null, ttype: tokens.CONST }, {
  input: 'sigma',
  tag: 'mi',
  output: '\u03C3',
  tex: null,
  ttype: tokens.CONST
}, {
  input: 'Sigma',
  tag: 'mo',
  output: '\u03A3',
  tex: null,
  ttype: tokens.CONST
}, { input: 'tau', tag: 'mi', output: '\u03C4', tex: null, ttype: tokens.CONST }, {
  input: 'theta',
  tag: 'mi',
  output: '\u03B8',
  tex: null,
  ttype: tokens.CONST
}, {
  input: 'vartheta',
  tag: 'mi',
  output: '\u03D1',
  tex: null,
  ttype: tokens.CONST
}, {
  input: 'Theta',
  tag: 'mo',
  output: '\u0398',
  tex: null,
  ttype: tokens.CONST
}, {
  input: 'upsilon',
  tag: 'mi',
  output: '\u03C5',
  tex: null,
  ttype: tokens.CONST
}, { input: 'xi', tag: 'mi', output: '\u03BE', tex: null, ttype: tokens.CONST }, { input: 'Xi', tag: 'mo', output: '\u039E', tex: null, ttype: tokens.CONST }, {
  input: 'zeta',
  tag: 'mi',
  output: '\u03B6',
  tex: null,
  ttype: tokens.CONST
},

// binary operation symbols
{ input: '*', tag: 'mo', output: '\u22C5', tex: 'cdot', ttype: tokens.CONST }, { input: '**', tag: 'mo', output: '\u2217', tex: 'ast', ttype: tokens.CONST }, {
  input: '***',
  tag: 'mo',
  output: '\u22C6',
  tex: 'star',
  ttype: tokens.CONST
}, {
  input: '// ',
  tag: 'mo',
  output: '/',
  tex: '/',
  ttype: tokens.CONST,
  val: true,
  notexcopy: true
}, {
  input: '\\\\',
  tag: 'mo',
  output: '\\',
  tex: 'backslash',
  ttype: tokens.CONST
}, {
  input: 'setminus',
  tag: 'mo',
  output: '\\',
  tex: null,
  ttype: tokens.CONST
}, {
  input: 'xx',
  tag: 'mo',
  output: '\xD7',
  tex: 'times',
  ttype: tokens.CONST
}, {
  input: '|><',
  tag: 'mo',
  output: '\u22C9',
  tex: 'ltimes',
  ttype: tokens.CONST
}, {
  input: '><|',
  tag: 'mo',
  output: '\u22CA',
  tex: 'rtimes',
  ttype: tokens.CONST
}, {
  input: '|><|',
  tag: 'mo',
  output: '\u22C8',
  tex: 'bowtie',
  ttype: tokens.CONST
}, { input: '-:', tag: 'mo', output: '\xF7', tex: 'div', ttype: tokens.CONST }, {
  input: 'divide',
  tag: 'mo',
  output: '-:',
  tex: null,
  ttype: tokens.DEFINITION
}, { input: '@', tag: 'mo', output: '\u2218', tex: 'circ', ttype: tokens.CONST }, {
  input: 'o+',
  tag: 'mo',
  output: '\u2295',
  tex: 'oplus',
  ttype: tokens.CONST
}, {
  input: 'ox',
  tag: 'mo',
  output: '\u2297',
  tex: 'otimes',
  ttype: tokens.CONST
}, {
  input: 'o.',
  tag: 'mo',
  output: '\u2299',
  tex: 'odot',
  ttype: tokens.CONST
}, {
  input: 'sum',
  tag: 'mo',
  output: '\u2211',
  tex: null,
  ttype: tokens.UNDEROVER
}, {
  input: 'prod',
  tag: 'mo',
  output: '\u220F',
  tex: null,
  ttype: tokens.UNDEROVER
}, {
  input: '^^',
  tag: 'mo',
  output: '\u2227',
  tex: 'wedge',
  ttype: tokens.CONST
}, {
  input: '^^^',
  tag: 'mo',
  output: '\u22C0',
  tex: 'bigwedge',
  ttype: tokens.UNDEROVER
}, { input: 'vv', tag: 'mo', output: '\u2228', tex: 'vee', ttype: tokens.CONST }, {
  input: 'vvv',
  tag: 'mo',
  output: '\u22C1',
  tex: 'bigvee',
  ttype: tokens.UNDEROVER
}, { input: 'nn', tag: 'mo', output: '\u2229', tex: 'cap', ttype: tokens.CONST }, {
  input: 'nnn',
  tag: 'mo',
  output: '\u22C2',
  tex: 'bigcap',
  ttype: tokens.UNDEROVER
}, { input: 'uu', tag: 'mo', output: '\u222A', tex: 'cup', ttype: tokens.CONST }, {
  input: 'uuu',
  tag: 'mo',
  output: '\u22C3',
  tex: 'bigcup',
  ttype: tokens.UNDEROVER
}, {
  input: 'overset',
  tag: 'mover',
  output: 'stackrel',
  tex: null,
  ttype: tokens.BINARY
}, {
  input: 'underset',
  tag: 'munder',
  output: 'stackrel',
  tex: null,
  ttype: tokens.BINARY
},

// binary relation symbols
{ input: '!=', tag: 'mo', output: '\u2260', tex: 'ne', ttype: tokens.CONST }, { input: ':=', tag: 'mo', output: ':=', tex: null, ttype: tokens.CONST }, { input: 'lt', tag: 'mo', output: '<', tex: null, ttype: tokens.CONST }, { input: 'gt', tag: 'mo', output: '>', tex: null, ttype: tokens.CONST }, { input: '<=', tag: 'mo', output: '\u2264', tex: 'le', ttype: tokens.CONST }, {
  input: 'lt=',
  tag: 'mo',
  output: '\u2264',
  tex: 'leq',
  ttype: tokens.CONST
}, {
  input: 'gt=',
  tag: 'mo',
  output: '\u2265',
  tex: 'geq',
  ttype: tokens.CONST
}, { input: '>=', tag: 'mo', output: '\u2265', tex: 'ge', ttype: tokens.CONST }, {
  input: '-<',
  tag: 'mo',
  output: '\u227A',
  tex: 'prec',
  ttype: tokens.CONST
}, { input: '-lt', tag: 'mo', output: '\u227A', tex: null, ttype: tokens.CONST }, {
  input: '>-',
  tag: 'mo',
  output: '\u227B',
  tex: 'succ',
  ttype: tokens.CONST
}, {
  input: '-<=',
  tag: 'mo',
  output: '\u2AAF',
  tex: 'preceq',
  ttype: tokens.CONST
}, {
  input: '>-=',
  tag: 'mo',
  output: '\u2AB0',
  tex: 'succeq',
  ttype: tokens.CONST
}, { input: 'in', tag: 'mo', output: '\u2208', tex: null, ttype: tokens.CONST }, {
  input: '!in',
  tag: 'mo',
  output: '\u2209',
  tex: 'notin',
  ttype: tokens.CONST
}, {
  input: 'sub',
  tag: 'mo',
  output: '\u2282',
  tex: 'subset',
  ttype: tokens.CONST
}, {
  input: 'sup',
  tag: 'mo',
  output: '\u2283',
  tex: 'supset',
  ttype: tokens.CONST
}, {
  input: 'sube',
  tag: 'mo',
  output: '\u2286',
  tex: 'subseteq',
  ttype: tokens.CONST
}, {
  input: 'supe',
  tag: 'mo',
  output: '\u2287',
  tex: 'supseteq',
  ttype: tokens.CONST
}, {
  input: '-=',
  tag: 'mo',
  output: '\u2261',
  tex: 'equiv',
  ttype: tokens.CONST
}, {
  input: '~=',
  tag: 'mo',
  output: '\u2245',
  tex: 'stackrel{\\sim}{=}',
  ttype: tokens.CONST
}, // back hack b/c mimetex doesn't support /cong
{
  input: 'cong',
  tag: 'mo',
  output: '~=',
  tex: null,
  ttype: tokens.DEFINITION
}, {
  input: '~~',
  tag: 'mo',
  output: '\u2248',
  tex: 'approx',
  ttype: tokens.CONST
}, {
  input: 'prop',
  tag: 'mo',
  output: '\u221D',
  tex: 'propto',
  ttype: tokens.CONST
},

// logical symbols
{ input: 'and', tag: 'mtext', output: 'and', tex: null, ttype: tokens.SPACE }, { input: 'or', tag: 'mtext', output: 'or', tex: null, ttype: tokens.SPACE }, {
  input: 'not',
  tag: 'mo',
  output: '\xAC',
  tex: 'neg',
  ttype: tokens.CONST
}, {
  input: '=>',
  tag: 'mo',
  output: '\u21D2',
  tex: 'Rightarrow',
  ttype: tokens.CONST
}, {
  input: 'implies',
  tag: 'mo',
  output: '=>',
  tex: null,
  ttype: tokens.DEFINITION
}, { input: 'if', tag: 'mo', output: 'if', tex: null, ttype: tokens.SPACE }, {
  input: '<=>',
  tag: 'mo',
  output: '\u21D4',
  tex: 'Leftrightarrow',
  ttype: tokens.CONST
}, {
  input: 'iff',
  tag: 'mo',
  output: '<=>',
  tex: null,
  ttype: tokens.DEFINITION
}, {
  input: 'AA',
  tag: 'mo',
  output: '\u2200',
  tex: 'forall',
  ttype: tokens.CONST
}, {
  input: 'EE',
  tag: 'mo',
  output: '\u2203',
  tex: 'exists',
  ttype: tokens.CONST
}, {
  input: '_|_',
  tag: 'mo',
  output: '\u22A5',
  tex: 'bot',
  ttype: tokens.CONST
}, { input: 'TT', tag: 'mo', output: '\u22A4', tex: 'top', ttype: tokens.CONST }, {
  input: '|--',
  tag: 'mo',
  output: '\u22A2',
  tex: 'vdash',
  ttype: tokens.CONST
}, {
  input: '|==',
  tag: 'mo',
  output: '\u22A8',
  tex: 'models',
  ttype: tokens.CONST
}, // mimetex doesn't support

// grouping brackets
{
  input: '(',
  tag: 'mo',
  output: '(',
  tex: null,
  ttype: tokens.LEFTBRACKET,
  val: true
}, {
  input: ')',
  tag: 'mo',
  output: ')',
  tex: null,
  ttype: tokens.RIGHTBRACKET,
  val: true
}, {
  input: '[',
  tag: 'mo',
  output: '[',
  tex: null,
  ttype: tokens.LEFTBRACKET,
  val: true
}, {
  input: ']',
  tag: 'mo',
  output: ']',
  tex: null,
  ttype: tokens.RIGHTBRACKET,
  val: true
}, {
  input: '{',
  tag: 'mo',
  output: '{',
  tex: 'lbrace',
  ttype: tokens.LEFTBRACKET
}, {
  input: '}',
  tag: 'mo',
  output: '}',
  tex: 'rbrace',
  ttype: tokens.RIGHTBRACKET
}, {
  input: '|',
  tag: 'mo',
  output: '|',
  tex: null,
  ttype: tokens.LEFTRIGHT,
  val: true
},
// {input:'||', tag:'mo', output:'||', tex:null, ttype:LEFTRIGHT},
{
  input: '(:',
  tag: 'mo',
  output: '\u2329',
  tex: 'langle',
  ttype: tokens.LEFTBRACKET
}, {
  input: ':)',
  tag: 'mo',
  output: '\u232A',
  tex: 'rangle',
  ttype: tokens.RIGHTBRACKET
}, {
  input: '<<',
  tag: 'mo',
  output: '\u2329',
  tex: 'langle',
  ttype: tokens.LEFTBRACKET
}, {
  input: '>>',
  tag: 'mo',
  output: '\u232A',
  tex: 'rangle',
  ttype: tokens.RIGHTBRACKET
}, {
  input: '{:',
  tag: 'mo',
  output: '{:',
  tex: null,
  ttype: tokens.LEFTBRACKET,
  invisible: true
}, {
  input: ':}',
  tag: 'mo',
  output: ':}',
  tex: null,
  ttype: tokens.RIGHTBRACKET,
  invisible: true
},

// miscellaneous symbols
{ input: 'int', tag: 'mo', output: '\u222B', tex: null, ttype: tokens.CONST }, {
  input: 'dx',
  tag: 'mi',
  output: '{:d x:}',
  tex: null,
  ttype: tokens.DEFINITION
}, {
  input: 'dy',
  tag: 'mi',
  output: '{:d y:}',
  tex: null,
  ttype: tokens.DEFINITION
}, {
  input: 'dz',
  tag: 'mi',
  output: '{:d z:}',
  tex: null,
  ttype: tokens.DEFINITION
}, {
  input: 'dt',
  tag: 'mi',
  output: '{:d t:}',
  tex: null,
  ttype: tokens.DEFINITION
}, {
  input: 'oint',
  tag: 'mo',
  output: '\u222E',
  tex: null,
  ttype: tokens.CONST
}, {
  input: 'del',
  tag: 'mo',
  output: '\u2202',
  tex: 'partial',
  ttype: tokens.CONST
}, {
  input: 'grad',
  tag: 'mo',
  output: '\u2207',
  tex: 'nabla',
  ttype: tokens.CONST
}, { input: '+-', tag: 'mo', output: '\xB1', tex: 'pm', ttype: tokens.CONST }, {
  input: 'O/',
  tag: 'mo',
  output: '\u2205',
  tex: 'emptyset',
  ttype: tokens.CONST
}, {
  input: 'oo',
  tag: 'mo',
  output: '\u221E',
  tex: 'infty',
  ttype: tokens.CONST
}, {
  input: 'aleph',
  tag: 'mo',
  output: '\u2135',
  tex: null,
  ttype: tokens.CONST
}, { input: '...', tag: 'mo', output: '...', tex: 'ldots', ttype: tokens.CONST }, {
  input: ':.',
  tag: 'mo',
  output: '\u2234',
  tex: 'therefore',
  ttype: tokens.CONST
}, {
  input: ":'",
  tag: 'mo',
  output: '\u2235',
  tex: 'because',
  ttype: tokens.CONST
}, {
  input: '/_',
  tag: 'mo',
  output: '\u2220',
  tex: 'angle',
  ttype: tokens.CONST
}, {
  input: '/_\\',
  tag: 'mo',
  output: '\u25B3',
  tex: 'triangle',
  ttype: tokens.CONST
}, {
  input: '\\ ',
  tag: 'mo',
  output: '\xA0',
  tex: null,
  ttype: tokens.CONST,
  val: true
}, {
  input: 'frown',
  tag: 'mo',
  output: '\u2322',
  tex: null,
  ttype: tokens.CONST
}, {
  input: '%',
  tag: 'mo',
  output: '%',
  tex: '%',
  ttype: tokens.CONST,
  notexcopy: true
}, {
  input: 'quad',
  tag: 'mo',
  output: '\xA0\xA0',
  tex: null,
  ttype: tokens.CONST
}, {
  input: 'qquad',
  tag: 'mo',
  output: '\xA0\xA0\xA0\xA0',
  tex: null,
  ttype: tokens.CONST
}, {
  input: 'cdots',
  tag: 'mo',
  output: '\u22EF',
  tex: null,
  ttype: tokens.CONST
}, {
  input: 'vdots',
  tag: 'mo',
  output: '\u22EE',
  tex: null,
  ttype: tokens.CONST
}, {
  input: 'ddots',
  tag: 'mo',
  output: '\u22F1',
  tex: null,
  ttype: tokens.CONST
}, {
  input: 'diamond',
  tag: 'mo',
  output: '\u22C4',
  tex: null,
  ttype: tokens.CONST
}, {
  input: 'square',
  tag: 'mo',
  output: '\u25A1',
  tex: 'boxempty',
  ttype: tokens.CONST
}, {
  input: '|__',
  tag: 'mo',
  output: '\u230A',
  tex: 'lfloor',
  ttype: tokens.CONST
}, {
  input: '__|',
  tag: 'mo',
  output: '\u230B',
  tex: 'rfloor',
  ttype: tokens.CONST
}, {
  input: '|~',
  tag: 'mo',
  output: '\u2308',
  tex: 'lceil',
  ttype: tokens.CONST
}, {
  input: 'lceiling',
  tag: 'mo',
  output: '|~',
  tex: null,
  ttype: tokens.DEFINITION
}, {
  input: '~|',
  tag: 'mo',
  output: '\u2309',
  tex: 'rceil',
  ttype: tokens.CONST
}, {
  input: 'rceiling',
  tag: 'mo',
  output: '~|',
  tex: null,
  ttype: tokens.DEFINITION
}, {
  input: 'CC',
  tag: 'mo',
  output: '\u2102',
  tex: 'mathbb{C}',
  ttype: tokens.CONST,
  notexcopy: true
}, {
  input: 'NN',
  tag: 'mo',
  output: '\u2115',
  tex: 'mathbb{N}',
  ttype: tokens.CONST,
  notexcopy: true
}, {
  input: 'QQ',
  tag: 'mo',
  output: '\u211A',
  tex: 'mathbb{Q}',
  ttype: tokens.CONST,
  notexcopy: true
}, {
  input: 'RR',
  tag: 'mo',
  output: '\u211D',
  tex: 'mathbb{R}',
  ttype: tokens.CONST,
  notexcopy: true
}, {
  input: 'ZZ',
  tag: 'mo',
  output: '\u2124',
  tex: 'mathbb{Z}',
  ttype: tokens.CONST,
  notexcopy: true
}, {
  input: 'f',
  tag: 'mi',
  output: 'f',
  tex: null,
  ttype: tokens.UNARY,
  func: true,
  val: true
}, {
  input: 'g',
  tag: 'mi',
  output: 'g',
  tex: null,
  ttype: tokens.UNARY,
  func: true,
  val: true
}, { input: "''", tag: 'mo', output: "''", tex: null, val: true }, { input: "'''", tag: 'mo', output: "'''", tex: null, val: true }, { input: "''''", tag: 'mo', output: "''''", tex: null, val: true },

// standard functions
{
  input: 'lim',
  tag: 'mo',
  output: 'lim',
  tex: null,
  ttype: tokens.UNDEROVER
}, {
  input: 'Lim',
  tag: 'mo',
  output: 'Lim',
  tex: null,
  ttype: tokens.UNDEROVER
}, {
  input: 'sin',
  tag: 'mo',
  output: 'sin',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'cos',
  tag: 'mo',
  output: 'cos',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'tan',
  tag: 'mo',
  output: 'tan',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'arcsin',
  tag: 'mo',
  output: 'arcsin',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'arccos',
  tag: 'mo',
  output: 'arccos',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'arctan',
  tag: 'mo',
  output: 'arctan',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'sinh',
  tag: 'mo',
  output: 'sinh',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'cosh',
  tag: 'mo',
  output: 'cosh',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'tanh',
  tag: 'mo',
  output: 'tanh',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'cot',
  tag: 'mo',
  output: 'cot',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'coth',
  tag: 'mo',
  output: 'coth',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'sech',
  tag: 'mo',
  output: 'sech',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'csch',
  tag: 'mo',
  output: 'csch',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'sec',
  tag: 'mo',
  output: 'sec',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'csc',
  tag: 'mo',
  output: 'csc',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'log',
  tag: 'mo',
  output: 'log',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'ln',
  tag: 'mo',
  output: 'ln',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'abs',
  tag: 'mo',
  output: 'abs',
  tex: null,
  ttype: tokens.UNARY,
  notexcopy: true,
  rewriteleftright: ['|', '|']
}, {
  input: 'norm',
  tag: 'mo',
  output: 'norm',
  tex: null,
  ttype: tokens.UNARY,
  notexcopy: true,
  rewriteleftright: ['\\|', '\\|']
}, {
  input: 'floor',
  tag: 'mo',
  output: 'floor',
  tex: null,
  ttype: tokens.UNARY,
  notexcopy: true,
  rewriteleftright: ['\\lfloor', '\\rfloor']
}, {
  input: 'ceil',
  tag: 'mo',
  output: 'ceil',
  tex: null,
  ttype: tokens.UNARY,
  notexcopy: true,
  rewriteleftright: ['\\lceil', '\\rceil']
}, {
  input: 'Sin',
  tag: 'mo',
  output: 'sin',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'Cos',
  tag: 'mo',
  output: 'cos',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'Tan',
  tag: 'mo',
  output: 'tan',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'Arcsin',
  tag: 'mo',
  output: 'arcsin',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'Arccos',
  tag: 'mo',
  output: 'arccos',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'Arctan',
  tag: 'mo',
  output: 'arctan',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'Sinh',
  tag: 'mo',
  output: 'sinh',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'Sosh',
  tag: 'mo',
  output: 'cosh',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'Tanh',
  tag: 'mo',
  output: 'tanh',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'Cot',
  tag: 'mo',
  output: 'cot',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'Sec',
  tag: 'mo',
  output: 'sec',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'Csc',
  tag: 'mo',
  output: 'csc',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'Log',
  tag: 'mo',
  output: 'log',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'Ln',
  tag: 'mo',
  output: 'ln',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'Abs',
  tag: 'mo',
  output: 'abs',
  tex: null,
  ttype: tokens.UNARY,
  notexcopy: true,
  rewriteleftright: ['|', '|']
}, {
  input: 'det',
  tag: 'mo',
  output: 'det',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'exp',
  tag: 'mo',
  output: 'exp',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, { input: 'dim', tag: 'mo', output: 'dim', tex: null, ttype: tokens.CONST }, {
  input: 'mod',
  tag: 'mo',
  output: 'mod',
  tex: 'text{mod}',
  ttype: tokens.CONST,
  notexcopy: true
}, {
  input: 'gcd',
  tag: 'mo',
  output: 'gcd',
  tex: null,
  ttype: tokens.UNARY,
  func: true
}, {
  input: 'lcm',
  tag: 'mo',
  output: 'lcm',
  tex: 'text{lcm}',
  ttype: tokens.UNARY,
  func: true,
  notexcopy: true
}, { input: 'lub', tag: 'mo', output: 'lub', tex: null, ttype: tokens.CONST }, { input: 'glb', tag: 'mo', output: 'glb', tex: null, ttype: tokens.CONST }, {
  input: 'min',
  tag: 'mo',
  output: 'min',
  tex: null,
  ttype: tokens.UNDEROVER
}, {
  input: 'max',
  tag: 'mo',
  output: 'max',
  tex: null,
  ttype: tokens.UNDEROVER
},

// arrows
{
  input: 'uarr',
  tag: 'mo',
  output: '\u2191',
  tex: 'uparrow',
  ttype: tokens.CONST
}, {
  input: 'darr',
  tag: 'mo',
  output: '\u2193',
  tex: 'downarrow',
  ttype: tokens.CONST
}, {
  input: 'rarr',
  tag: 'mo',
  output: '\u2192',
  tex: 'rightarrow',
  ttype: tokens.CONST
}, { input: '->', tag: 'mo', output: '\u2192', tex: 'to', ttype: tokens.CONST }, {
  input: '>->',
  tag: 'mo',
  output: '\u21A3',
  tex: 'rightarrowtail',
  ttype: tokens.CONST
}, {
  input: '->>',
  tag: 'mo',
  output: '\u21A0',
  tex: 'twoheadrightarrow',
  ttype: tokens.CONST
}, {
  input: '>->>',
  tag: 'mo',
  output: '\u2916',
  tex: 'twoheadrightarrowtail',
  ttype: tokens.CONST
}, {
  input: '|->',
  tag: 'mo',
  output: '\u21A6',
  tex: 'mapsto',
  ttype: tokens.CONST
}, {
  input: 'larr',
  tag: 'mo',
  output: '\u2190',
  tex: 'leftarrow',
  ttype: tokens.CONST
}, {
  input: 'harr',
  tag: 'mo',
  output: '\u2194',
  tex: 'leftrightarrow',
  ttype: tokens.CONST
}, {
  input: 'rArr',
  tag: 'mo',
  output: '\u21D2',
  tex: 'Rightarrow',
  ttype: tokens.CONST
}, {
  input: 'lArr',
  tag: 'mo',
  output: '\u21D0',
  tex: 'Leftarrow',
  ttype: tokens.CONST
}, {
  input: 'hArr',
  tag: 'mo',
  output: '\u21D4',
  tex: 'Leftrightarrow',
  ttype: tokens.CONST
},

// commands with argument
{
  input: 'sqrt',
  tag: 'msqrt',
  output: 'sqrt',
  tex: null,
  ttype: tokens.UNARY
}, {
  input: 'root',
  tag: 'mroot',
  output: 'root',
  tex: null,
  ttype: tokens.BINARY
}, { input: 'frac', tag: 'mfrac', output: '/', tex: null, ttype: tokens.BINARY }, { input: '/', tag: 'mfrac', output: '/', tex: null, ttype: tokens.INFIX }, {
  input: 'stackrel',
  tag: 'mover',
  output: 'stackrel',
  tex: null,
  ttype: tokens.BINARY
}, { input: '_', tag: 'msub', output: '_', tex: null, ttype: tokens.INFIX }, { input: '^', tag: 'msup', output: '^', tex: null, ttype: tokens.INFIX }, {
  input: 'cancel',
  tag: 'menclose',
  output: 'cancel',
  tex: null,
  ttype: tokens.UNARY
}, {
  input: 'Sqrt',
  tag: 'msqrt',
  output: 'sqrt',
  tex: null,
  ttype: tokens.UNARY
}, {
  input: 'hat',
  tag: 'mover',
  output: '^',
  tex: null,
  ttype: tokens.UNARY,
  acc: true
}, {
  input: 'bar',
  tag: 'mover',
  output: '\xAF',
  tex: 'overline',
  ttype: tokens.UNARY,
  acc: true
}, {
  input: 'vec',
  tag: 'mover',
  output: '\u2192',
  tex: null,
  ttype: tokens.UNARY,
  acc: true
}, {
  input: 'tilde',
  tag: 'mover',
  output: '~',
  tex: null,
  ttype: tokens.UNARY,
  acc: true
}, {
  input: 'dot',
  tag: 'mover',
  output: '.',
  tex: null,
  ttype: tokens.UNARY,
  acc: true
}, {
  input: 'ddot',
  tag: 'mover',
  output: '..',
  tex: null,
  ttype: tokens.UNARY,
  acc: true
}, {
  input: 'ul',
  tag: 'munder',
  output: '\u0332',
  tex: 'underline',
  ttype: tokens.UNARY,
  acc: true
}, {
  input: 'ubrace',
  tag: 'munder',
  output: '\u23DF',
  tex: 'underbrace',
  ttype: tokens.UNARY,
  acc: true
}, {
  input: 'obrace',
  tag: 'mover',
  output: '\u23DE',
  tex: 'overbrace',
  ttype: tokens.UNARY,
  acc: true
}, {
  input: 'text',
  tag: 'mtext',
  output: 'text',
  tex: null,
  ttype: tokens.TEXT
}, {
  input: 'mbox',
  tag: 'mtext',
  output: 'mbox',
  tex: null,
  ttype: tokens.TEXT
}, quoteSymbol,
// { input: 'var', tag: 'mstyle', atname: 'fontstyle', atval: 'italic', output: 'var', tex: null, ttype: tokens.UNARY },
{ input: 'color', tag: 'mstyle', ttype: tokens.BINARY }, {
  input: 'bb',
  tag: 'mstyle',
  atname: 'mathvariant',
  atval: 'bold',
  output: 'bb',
  tex: 'mathbf',
  ttype: tokens.UNARY,
  notexcopy: true
}, {
  input: 'mathbf',
  tag: 'mstyle',
  atname: 'mathvariant',
  atval: 'bold',
  output: 'mathbf',
  tex: null,
  ttype: tokens.UNARY
}, {
  input: 'sf',
  tag: 'mstyle',
  atname: 'mathvariant',
  atval: 'sans-serif',
  output: 'sf',
  tex: 'mathsf',
  ttype: tokens.UNARY,
  notexcopy: true
}, {
  input: 'mathsf',
  tag: 'mstyle',
  atname: 'mathvariant',
  atval: 'sans-serif',
  output: 'mathsf',
  tex: null,
  ttype: tokens.UNARY
}, {
  input: 'bbb',
  tag: 'mstyle',
  atname: 'mathvariant',
  atval: 'double-struck',
  output: 'bbb',
  tex: 'mathbb',
  ttype: tokens.UNARY,
  notexcopy: true
}, {
  input: 'mathbb',
  tag: 'mstyle',
  atname: 'mathvariant',
  atval: 'double-struck',
  output: 'mathbb',
  tex: null,
  ttype: tokens.UNARY
}, {
  input: 'cc',
  tag: 'mstyle',
  atname: 'mathvariant',
  atval: 'script',
  output: 'cc',
  tex: 'mathcal',
  ttype: tokens.UNARY,
  notexcopy: true
}, {
  input: 'mathcal',
  tag: 'mstyle',
  atname: 'mathvariant',
  atval: 'script',
  output: 'mathcal',
  tex: null,
  ttype: tokens.UNARY
}, {
  input: 'tt',
  tag: 'mstyle',
  atname: 'mathvariant',
  atval: 'monospace',
  output: 'tt',
  tex: 'mathtt',
  ttype: tokens.UNARY,
  notexcopy: true
}, {
  input: 'mathtt',
  tag: 'mstyle',
  atname: 'mathvariant',
  atval: 'monospace',
  output: 'mathtt',
  tex: null,
  ttype: tokens.UNARY
}, {
  input: 'fr',
  tag: 'mstyle',
  atname: 'mathvariant',
  atval: 'fraktur',
  output: 'fr',
  tex: 'mathfrak',
  ttype: tokens.UNARY,
  notexcopy: true
}, {
  input: 'mathfrak',
  tag: 'mstyle',
  atname: 'mathvariant',
  atval: 'fraktur',
  output: 'mathfrak',
  tex: null,
  ttype: tokens.UNARY
}];

var inputSymbols = [];

function refreshSymbols() {
  symbols.sort(function (s1, s2) {
    return s1.input > s2.input ? 1 : -1;
  });
  inputSymbols = symbols.map(function (item) {
    return item.input;
  });
}

// function newcommand(oldstr, newstr) {
//   symbols.push({ input: oldstr, tag: 'mo', output: newstr, tex: null, ttype: tokens.DEFINITION });
//   refreshSymbols();
// }

// function newsymbol(symbolobj) {
//   symbols.push(symbolobj);
//   refreshSymbols();
// }

function removeCharsAndBlanks(str, n) {
  // remove n characters and any following blanks
  var st = void 0;
  if (str.charAt(n) === '\\' && str.charAt(n + 1) !== '\\' && str.charAt(n + 1) !== ' ') {
    st = str.slice(n + 1);
  } else {
    st = str.slice(n);
  }
  var i = 0;
  while (i < st.length && st.charCodeAt(i) <= 32) {
    i++;
  }
  return st.slice(i);
}

function position(arr, str, n) {
  // return position >=n where str appears or would be inserted
  // assumes arr is sorted
  if (n === 0) {
    var len = arr.length;
    var m = void 0;
    n = -1;
    while (n + 1 < len) {
      m = n + len >> 1;
      if (arr[m] < str) {
        n = m;
      } else {
        len = m;
      }
    }
    return len;
  }
  var i = n;
  while (i < arr.length && arr[i] < str) {
    i++;
  }
  return i; // i=arr.length || arr[i]>=str
}

function getSymbol(str) {
  // return maximal initial substring of str that appears in names
  // return null if there is none
  var newPos = 0; // new pos
  var oldPos = 0; // old pos
  var matchPos = void 0; // match pos
  var st = void 0;
  var tagst = void 0;
  var match = '';
  var more = true;
  for (var i = 1; i <= str.length && more; i++) {
    st = str.slice(0, i); // initial substring of length i
    oldPos = newPos;
    newPos = position(inputSymbols, st, oldPos);
    if (newPos < inputSymbols.length && str.slice(0, inputSymbols[newPos].length) === inputSymbols[newPos]) {
      match = inputSymbols[newPos];
      matchPos = newPos;
      i = match.length;
    }
    more = newPos < inputSymbols.length && str.slice(0, inputSymbols[newPos].length) >= inputSymbols[newPos];
  }
  previousSymbol = currentSymbol;
  if (match !== '') {
    currentSymbol = symbols[matchPos].ttype;
    return symbols[matchPos];
  }
  // if str[0] is a digit or - return maxsubstring of digits.digits
  currentSymbol = tokens.CONST;
  newPos = 1;
  st = str.slice(0, 1);
  var integ = true;

  while ('0' <= st && st <= '9' && newPos <= str.length) {
    st = str.slice(newPos, newPos + 1);
    newPos++;
  }
  if (st === '.') {
    st = str.slice(newPos, newPos + 1);
    if ('0' <= st && st <= '9') {
      integ = false;
      newPos++;
      while ('0' <= st && st <= '9' && newPos <= str.length) {
        st = str.slice(newPos, newPos + 1);
        newPos++;
      }
    }
  }
  if (integ && newPos > 1 || newPos > 2) {
    st = str.slice(0, newPos - 1);
    tagst = 'mn';
  } else {
    newPos = 2;
    st = str.slice(0, 1); // take 1 character
    tagst = ('A' > st || st > 'Z') && ('a' > st || st > 'z') ? 'mo' : 'mi';
  }
  if (st === '-' && previousSymbol === tokens.INFIX) {
    currentSymbol = tokens.INFIX;
    return {
      input: st,
      tag: tagst,
      output: st,
      ttype: tokens.UNARY,
      func: true,
      val: true
    };
  }
  return { input: st, tag: tagst, output: st, ttype: tokens.CONST, val: true }; // added val bit
}

function removeBrackets(node) {
  var st = void 0;
  if (node.charAt(0) === '{' && node.charAt(node.length - 1) === '}') {
    var leftchop = 0;

    st = node.substr(1, 5);
    if (st === '\\left') {
      st = node.charAt(6);
      if (st === '(' || st === '[' || st === '{') {
        leftchop = 7;
      } else {
        st = node.substr(6, 7);
        if (st === '\\lbrace') {
          leftchop = 13;
        }
      }
    } else {
      st = node.charAt(1);
      if (st === '(' || st === '[') {
        leftchop = 2;
      }
    }
    if (leftchop > 0) {
      // st = node.charAt(node.length-7);
      st = node.substr(node.length - 8);
      if (st === '\\right)}' || st === '\\right]}' || st === '\\right.}') {
        node = '{' + node.substr(leftchop);
        node = node.substr(0, node.length - 8) + '}';
      } else if (st === '\\rbrace}') {
        node = '{' + node.substr(leftchop);
        node = node.substr(0, node.length - 14) + '}';
      }
    }
  }
  return node;
}

/*
  Parsing ASCII math expressions with the following grammar
  v ::= [A-Za-z] | greek letters | numbers | other constant symbols
  u ::= sqrt | text | bb | other unary symbols for font commands
  b ::= frac | root | stackrel         binary symbols
  l ::= ( | [ | { | (: | {:            left brackets
  r ::= ) | ] | } | :) | :}            right brackets
  S ::= v | lEr | uS | bSS             Simple expression
  I ::= S_S | S^S | S_S^S | S          Intermediate expression
  E ::= IE | I/I                       Expression
  Each terminal symbol is translated into a corresponding mathml node.
*/

var nestingDepth = void 0;
var previousSymbol = void 0;
var currentSymbol = void 0;

function getTeXsymbol(symb) {
  var pre = void 0;
  if (typeof symb.val === 'boolean' && symb.val) {
    pre = '';
  } else {
    pre = '\\';
  }
  if (!symb.tex) {
    // can't remember why this was here.  Breaks /delta /Delta to removed
    // return (pre + (pre == '' ? symb.input : symb.input.toLowerCase()));
    return pre + symb.input;
  } else {
    return pre + symb.tex;
  }
}

function parseSexpr(str) {
  // parses str and returns [node,tailstr]
  var symbol = void 0;
  var node = void 0;
  var result = void 0;
  var i = void 0;
  // const rightvert = false,
  var newFrag = '';
  str = removeCharsAndBlanks(str, 0);
  symbol = getSymbol(str); // either a token or a bracket or empty
  if (!symbol || symbol.ttype === tokens.RIGHTBRACKET && nestingDepth > 0) {
    return [null, str];
  }
  if (symbol.ttype === tokens.DEFINITION) {
    str = symbol.output + removeCharsAndBlanks(str, symbol.input.length);
    symbol = getSymbol(str);
  }
  switch (symbol.ttype) {
    case tokens.UNDEROVER:
    case tokens.CONST:
      str = removeCharsAndBlanks(str, symbol.input.length);
      var texsymbol = getTeXsymbol(symbol);
      if (texsymbol.charAt(0) === '\\' || symbol.tag === 'mo') {
        return [texsymbol, str];
      } else {
        return ['{' + texsymbol + '}', str];
      }

    case tokens.LEFTBRACKET:
      // read (expr+)
      nestingDepth++;
      str = removeCharsAndBlanks(str, symbol.input.length);

      result = parseExpr(str, true);
      nestingDepth--;
      var leftchop = 0;
      if (result[0].substr(0, 6) === '\\right') {
        st = result[0].charAt(6);
        if (st === ')' || st === ']' || st === '}') {
          leftchop = 6;
        } else if (st === '.') {
          leftchop = 7;
        } else {
          st = result[0].substr(6, 7);
          if (st === '\\rbrace') {
            leftchop = 13;
          }
        }
      }
      if (leftchop > 0) {
        result[0] = result[0].substr(leftchop);
        if (symbol.invisible) {
          node = '{' + result[0] + '}';
        } else {
          node = '{' + getTeXsymbol(symbol) + result[0] + '}';
        }
      } else {
        if (symbol.invisible) {
          node = '{\\left.' + result[0] + '}';
        } else {
          node = '{\\left' + getTeXsymbol(symbol) + result[0] + '}';
        }
      }
      return [node, result[1]];
    case tokens.TEXT:
      if (symbol !== quoteSymbol) {
        str = removeCharsAndBlanks(str, symbol.input.length);
      }
      if (str.charAt(0) === '{') {
        i = str.indexOf('}');
      } else if (str.charAt(0) === '(') {
        i = str.indexOf(')');
      } else if (str.charAt(0) === '[') {
        i = str.indexOf(']');
      } else if (symbol === quoteSymbol) {
        i = str.slice(1).indexOf("'") + 1;
      } else {
        i = 0;
      }
      if (i === -1) {
        i = str.length;
      }
      st = str.slice(1, i);
      if (st.charAt(0) === ' ') {
        newFrag = '\\ ';
      }
      newFrag += '\\text{' + st + '}';
      if (st.charAt(st.length - 1) === ' ') {
        newFrag += '\\ ';
      }
      str = removeCharsAndBlanks(str, i + 1);
      return [newFrag, str];
    case tokens.UNARY:
      str = removeCharsAndBlanks(str, symbol.input.length);
      result = parseSexpr(str);
      if (result[0] === null) {
        return ['{' + getTeXsymbol(symbol) + '}', str];
      }
      if (symbol.func === true) {
        // functions hack
        st = str.charAt(0);
        if (st === '^' || st === '_' || st === '/' || st === '|' || st === ',' || symbol.input.length === 1 && symbol.input.match(/\w/) && st !== '(') {
          return ['{' + getTeXsymbol(symbol) + '}', str];
        } else {
          node = '{' + getTeXsymbol(symbol) + '{' + result[0] + '}}';
          return [node, result[1]];
        }
      }
      result[0] = removeBrackets(result[0]);
      if (symbol.input === 'sqrt') {
        // sqrt
        return ['\\sqrt{' + result[0] + '}', result[1]];
      } else if (symbol.input === 'cancel') {
        // cancel
        return ['\\cancel{' + result[0] + '}', result[1]];
      } else if (typeof symbol.rewriteleftright !== 'undefined') {
        // abs, floor, ceil
        return ['{\\left' + symbol.rewriteleftright[0] + result[0] + '\\right' + symbol.rewriteleftright[1] + '}', result[1]];
      } else if (symbol.acc === true) {
        // accent
        // return ['{'+getTeXsymbol(symbol)+'{'+result[0]+'}}',result[1]];
        return [getTeXsymbol(symbol) + '{' + result[0] + '}', result[1]];
      } else {
        // font change command
        return ['{' + getTeXsymbol(symbol) + '{' + result[0] + '}}', result[1]];
      }
    case tokens.BINARY:
      str = removeCharsAndBlanks(str, symbol.input.length);
      result = parseSexpr(str);
      if (result[0] === null) {
        return ['{' + getTeXsymbol(symbol) + '}', str];
      }
      result[0] = removeBrackets(result[0]);
      var result2 = parseSexpr(result[1]);
      if (result2[0] === null) {
        return ['{' + getTeXsymbol(symbol) + '}', str];
      }
      result2[0] = removeBrackets(result2[0]);
      if (symbol.input === 'color') {
        newFrag = '{\\color{' + result[0].replace(/[{}]/g, '') + '}' + result2[0] + '}';
      } else if (symbol.input === 'root') {
        newFrag = '{\\sqrt[' + result[0] + ']{' + result2[0] + '}}';
      } else {
        newFrag = '{' + getTeXsymbol(symbol) + '{' + result[0] + '}{' + result2[0] + '}}';
      }
      return [newFrag, result2[1]];
    case tokens.INFIX:
      str = removeCharsAndBlanks(str, symbol.input.length);
      return [symbol.output, str];
    case tokens.SPACE:
      str = removeCharsAndBlanks(str, symbol.input.length);
      return ['{\\quad\\text{' + symbol.input + '}\\quad}', str];
    case tokens.LEFTRIGHT:
      //    if (rightvert) return [null,str]; else rightvert = true;
      nestingDepth++;
      str = removeCharsAndBlanks(str, symbol.input.length);
      result = parseExpr(str, false);
      nestingDepth--;
      var st = '';
      st = result[0].charAt(result[0].length - 1);
      // alert(result[0].lastChild+'***'+st);
      if (st === '|') {
        // its an absolute value subterm
        node = '{\\left|' + result[0] + '}';
        return [node, result[1]];
      } else {
        // the '|' is a \mid
        node = '{\\mid}';
        return [node, str];
      }

    default:
      // alert('default');
      str = removeCharsAndBlanks(str, symbol.input.length);
      return ['{' + getTeXsymbol(symbol) + '}', str];
  }
}

function parseIexpr(str) {
  var sym2 = void 0;
  var node = void 0;
  var result = void 0;
  str = removeCharsAndBlanks(str, 0);
  var sym1 = getSymbol(str);
  result = parseSexpr(str);
  node = result[0];
  str = result[1];
  var symbol = getSymbol(str);
  if (symbol.ttype === tokens.INFIX && symbol.input !== '/') {
    str = removeCharsAndBlanks(str, symbol.input.length);
    // if (symbol.input === '/') result = parseIexpr(str); else
    result = parseSexpr(str);
    // show box in place of missing argument
    if (result[0] === null) {
      result[0] = '{}';
    } else {
      result[0] = removeBrackets(result[0]);
    }
    str = result[1];
    //    if (symbol.input === '/') removeBrackets(node);
    if (symbol.input === '_') {
      sym2 = getSymbol(str);
      if (sym2.input === '^') {
        str = removeCharsAndBlanks(str, sym2.input.length);
        var res2 = parseSexpr(str);
        res2[0] = removeBrackets(res2[0]);
        str = res2[1];
        node = '{' + node;
        node += '_{' + result[0] + '}';
        node += '^{' + res2[0] + '}';
        node += '}';
      } else {
        node += '_{' + result[0] + '}';
      }
    } else {
      // must be ^
      // node = '{'+node+'}^{'+result[0]+'}';
      node = node + '^{' + result[0] + '}';
    }
    if (typeof sym1.func !== 'undefined' && sym1.func) {
      sym2 = getSymbol(str);
      if (sym2.ttype !== tokens.INFIX && sym2.ttype !== tokens.RIGHTBRACKET) {
        result = parseIexpr(str);
        node = '{' + node + result[0] + '}';
        str = result[1];
      }
    }
  }

  return [node, str];
}

function parseExpr(str, rightbracket) {
  var symbol = void 0;
  var node = void 0;
  var result = void 0;
  var i = void 0;
  // const nodeList = [];
  var newFrag = '';
  var addedright = false;
  do {
    str = removeCharsAndBlanks(str, 0);
    result = parseIexpr(str);
    node = result[0];
    str = result[1];
    symbol = getSymbol(str);
    if (symbol.ttype === tokens.INFIX && symbol.input === '/') {
      str = removeCharsAndBlanks(str, symbol.input.length);
      result = parseIexpr(str);

      // show box in place of missing argument
      if (result[0] === null) {
        result[0] = '{}';
      } else {
        result[0] = removeBrackets(result[0]);
      }
      str = result[1];
      node = removeBrackets(node);
      node = '' + ('\\frac' + '{') + node + '}';
      node += '{' + result[0] + '}';
      newFrag += node;
      symbol = getSymbol(str);
    } else if (node) {
      newFrag += node;
    }
  } while ((symbol.ttype !== tokens.RIGHTBRACKET && (symbol.ttype !== tokens.LEFTRIGHT || rightbracket) || nestingDepth === 0) && symbol && symbol.output);
  if (symbol.ttype === tokens.RIGHTBRACKET || symbol.ttype === tokens.LEFTRIGHT) {
    //    if (nestingDepth > 0) nestingDepth--;
    var len = newFrag.length;
    if (len > 2 && newFrag.charAt(0) === '{' && newFrag.indexOf(',') > 0) {
      // could be matrix (total rewrite from .js)
      var right = newFrag.charAt(len - 2);
      if (right === ')' || right === ']') {
        var left = newFrag.charAt(6);
        if (left === '(' && right === ')' && symbol.output !== '}' || left === '[' && right === ']') {
          var mxout = '\\matrix{';
          var pos = new Array(); // position of commas
          pos.push(0);
          var matrix = true;
          var mxnestingd = 0;
          var subpos = [];
          subpos[0] = [0];
          var lastsubposstart = 0;
          var mxanynestingd = 0;
          for (i = 1; i < len - 1; i++) {
            if (newFrag.charAt(i) === left) {
              mxnestingd++;
            }
            if (newFrag.charAt(i) === right) {
              mxnestingd--;
              if (mxnestingd === 0 && newFrag.charAt(i + 2) === ',' && newFrag.charAt(i + 3) === '{') {
                pos.push(i + 2);
                lastsubposstart = i + 2;
                subpos[lastsubposstart] = [i + 2];
              }
            }
            if (newFrag.charAt(i) === '[' || newFrag.charAt(i) === '(' || newFrag.charAt(i) === '{') {
              mxanynestingd++;
            }
            if (newFrag.charAt(i) === ']' || newFrag.charAt(i) === ')' || newFrag.charAt(i) === '}') {
              mxanynestingd--;
            }
            if (newFrag.charAt(i) === ',' && mxanynestingd === 1) {
              subpos[lastsubposstart].push(i);
            }
            if (mxanynestingd < 0) {
              // happens at the end of the row
              if (lastsubposstart === i + 1) {
                // if at end of row, skip to next row
                i++;
              } else {
                // misformed something - abandon treating as a matrix
                matrix = false;
              }
            }
          }

          pos.push(len);
          var lastmxsubcnt = -1;
          if (mxnestingd === 0 && pos.length > 0 && matrix) {
            for (i = 0; i < pos.length - 1; i++) {
              if (i > 0) {
                mxout += '\\\\';
              }
              var subarr = void 0;
              if (i === 0) {
                // subarr = newFrag.substr(pos[i]+7,pos[i+1]-pos[i]-15).split(',');
                if (subpos[pos[i]].length === 1) {
                  subarr = [newFrag.substr(pos[i] + 7, pos[i + 1] - pos[i] - 15)];
                } else {
                  var _subarr = [newFrag.substring(pos[i] + 7, subpos[pos[i]][1])];
                  for (var j = 2; j < subpos[pos[i]].length; j++) {
                    _subarr.push(newFrag.substring(subpos[pos[i]][j - 1] + 1, subpos[pos[i]][j]));
                  }
                  _subarr.push(newFrag.substring(subpos[pos[i]][subpos[pos[i]].length - 1] + 1, pos[i + 1] - 8));
                }
              } else {
                // const subarr = newFrag.substr(pos[i]+8,pos[i+1]-pos[i]-16).split(',');
                if (subpos[pos[i]].length === 1) {
                  subarr = [newFrag.substr(pos[i] + 8, pos[i + 1] - pos[i] - 16)];
                } else {
                  subarr = [newFrag.substring(pos[i] + 8, subpos[pos[i]][1])];
                  for (var _j = 2; _j < subpos[pos[i]].length; _j++) {
                    subarr.push(newFrag.substring(subpos[pos[i]][_j - 1] + 1, subpos[pos[i]][_j]));
                  }
                  subarr.push(newFrag.substring(subpos[pos[i]][subpos[pos[i]].length - 1] + 1, pos[i + 1] - 8));
                }
              }
              if (lastmxsubcnt > 0 && subarr.length !== lastmxsubcnt) {
                matrix = false;
              } else if (lastmxsubcnt === -1) {
                lastmxsubcnt = subarr.length;
              }
              mxout += subarr.join('&');
            }
          }
          mxout += '}';

          if (matrix) {
            newFrag = mxout;
          }
        }
      }
    }

    str = removeCharsAndBlanks(str, symbol.input.length);
    if (typeof symbol.invisible !== 'boolean' || !symbol.invisible) {
      node = '\\right' + getTeXsymbol(symbol); // AMcreateMmlNode('mo',document.createTextNode(symbol.output));
      newFrag += node;
      addedright = true;
    } else {
      newFrag += '\\right.';
      addedright = true;
    }
  }
  if (nestingDepth > 0 && !addedright) {
    newFrag += '\\right.'; // adjust for non-matching left brackets
    // todo: adjust for non-matching right brackets
  }

  return [newFrag, str];
}

/** @param {string} str */
function asciimathToTex(str) {
  nestingDepth = 0;
  str = str.replace(/(&nbsp;|\u00a0|&#160;)/g, '').replace(/&gt;/g, '>').replace(/&lt;/g, '<');
  if (!str.match(/\S/)) {
    return '';
  }
  return parseExpr(str.replace(/^\s+/g, ''), false)[0];
}

{
  var otherSymbols = symbols.filter(function (item) {
    return item.tex && item.notexcopy !== true;
  }).map(function (item) {
    return {
      input: item.tex,
      tag: item.tag,
      output: item.output,
      ttype: item.ttype,
      acc: item.acc || false
    };
  });
  symbols.push.apply(symbols, toConsumableArray(otherSymbols));

  refreshSymbols();
}

/** !
 * @file showdown-katex: markdown + ( latex and/or asciimath )
 * @author obedm503
 * @git https://github.com/obedm503/showdown-katex.git
 * @examples https://obedm503.github.io/showdown-katex/
 * @license MIT
 */
/**
 * @param {object} opts
 * @param {NodeListOf<Element>} opts.elements
 * @param opts.config
 * @param {boolean} opts.isAsciimath
 */
function renderBlockElements(_ref) {
  var elements = _ref.elements,
      config = _ref.config,
      isAsciimath = _ref.isAsciimath;

  if (!elements.length) {
    return;
  }

  elements.forEach(function (element) {
    var input = element.textContent;
    var latex = isAsciimath ? asciimathToTex(input) : input;
    var html = katex$1.renderToString(latex, config);
    element.parentNode.outerHTML = '<span title="' + input.trim() + '">' + html + '</span>';
  });
}

/**
 * https://stackoverflow.com/questions/3446170/escape-string-for-use-in-javascript-regex
 * @param {string} str
 * @returns {string} regexp escaped string
 */
function escapeRegExp(str) {
  return str.replace(/[-[\]/{}()*+?.\\$^|]/g, '\\$&');
}

// katex config
var getConfig = function getConfig() {
  var config = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
  return _extends({
    displayMode: true,
    throwOnError: false, // fail silently
    errorColor: '#ff0000'
  }, config, {
    delimiters: [{ left: '$$', right: '$$', display: false }, { left: '~', right: '~', display: false, asciimath: true }].concat(config.delimiters || [])
  });
};

var showdownKatex = function showdownKatex(userConfig) {
  return function () {
    var parser = new DOMParser();
    var config = getConfig(userConfig);
    var asciimathDelimiters = config.delimiters.filter(function (item) {
      return item.asciimath;
    }).map(function (_ref2) {
      var left = _ref2.left,
          right = _ref2.right;

      var test = new RegExp(escapeRegExp(left) + '(.*?)' + escapeRegExp(right), 'g');
      var replacer = function replacer(match, asciimath) {
        return '' + left + asciimathToTex(asciimath) + right;
      };
      return { test: test, replacer: replacer };
    });

    return [{
      type: 'output',
      filter: function filter() {
        var html = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : '';

        // parse html
        var wrapper = parser.parseFromString(html, 'text/html').body;

        if (asciimathDelimiters.length) {
          // convert inline asciimath to inline latex
          // ignore anything in code and pre elements
          wrapper.querySelectorAll(':not(code):not(pre)').forEach(function (el) {
            /** @type Text[] */
            var textNodes = [].concat(toConsumableArray(el.childNodes)).filter(
            // skip "empty" text nodes
            function (node) {
              return node.nodeName === '#text' && node.nodeValue.trim();
            });

            textNodes.forEach(function (node) {
              var newText = asciimathDelimiters.reduce(function (acc, _ref3) {
                var test = _ref3.test,
                    replacer = _ref3.replacer;
                return acc.replace(test, replacer);
              }, node.nodeValue);
              node.nodeValue = newText;
            });
          });
        }

        // find the math in code blocks
        var latex = wrapper.querySelectorAll('code.latex.language-latex');
        var asciimath = wrapper.querySelectorAll('code.asciimath.language-asciimath');

        renderBlockElements({ elements: latex, config: config });
        renderBlockElements({ elements: asciimath, config: config, isAsciimath: true });

        renderMathInElement(wrapper, config);

        // return html without the wrapper
        return wrapper.innerHTML;
      }
    }];
  };
};

// register extension with default config
if (typeof window.showdown !== 'undefined') {
  window.showdown.extension('showdown-katex', showdownKatex());
}

return showdownKatex;

})));
//# sourceMappingURL=showdown-katex.js.map

/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(35)))

/***/ }),

/***/ 3215:
/***/ (function(module, exports, __webpack_require__) {

exports = module.exports = __webpack_require__(317)(true);
// imports


// module
exports.push([module.i, ".uploadBtn{margin-left:0}.comment_item_cont .J_Comment_Face img{width:42px;height:42px;margin-top:2px}.panel-comment_item .t_area{font-size:13px}.panel-comment_item .score_area{color:#ff6800;margin-left:28px}.panel-comment_item .validate_area{color:#999}.appraise .panel-comment_item .t_info{width:1062px}.appraise .panel-comment_item .childrenCommentsView .t_info{width:989px}.course-message .panel-comment_item .comment_orig_content{width:980px}.course-message .panel-comment_item a.content-username{max-width:300px}.panel-comment_item{min-height:50px}", "", {"version":3,"sources":["/Users/hs/forgeplus-react/src/modules/courses/graduation/tasks/GraduationTasksappraiseReply.css"],"names":[],"mappings":"AAAA,WACE,aAAiB,CAClB,AACD,uCACE,WAAY,AACZ,YAAa,AACb,cAAgB,CACjB,AACD,4BACE,cAAgB,CACjB,AACD,gCACE,cAAe,AACf,gBAAkB,CACnB,AAED,mCACE,UAAe,CAChB,AAED,sCACE,YAAc,CACf,AACD,4DACE,WAAa,CACd,AACD,0DACE,WAAa,CACd,AAED,uDACE,eAAgB,CACjB,AACD,oBACE,eAAgB,CACjB","file":"GraduationTasksappraiseReply.css","sourcesContent":[".uploadBtn {\r\n  margin-left: 0px;\r\n}\r\n.comment_item_cont .J_Comment_Face img {\r\n  width: 42px;\r\n  height: 42px;\r\n  margin-top: 2px;\r\n}\r\n.panel-comment_item .t_area {\r\n  font-size: 13px;\r\n}\r\n.panel-comment_item .score_area {\r\n  color: #FF6800;\r\n  margin-left: 28px;\r\n}\r\n\r\n.panel-comment_item .validate_area {\r\n  color: #999999;\r\n}\r\n\r\n.appraise .panel-comment_item .t_info {\r\n  width: 1062px;\r\n}\r\n.appraise .panel-comment_item .childrenCommentsView .t_info {\r\n  width: 989px;\r\n}\r\n.course-message .panel-comment_item .comment_orig_content {\r\n  width: 980px;\r\n}\r\n\r\n.course-message .panel-comment_item a.content-username {\r\n  max-width: 300px\r\n}\r\n.panel-comment_item{\r\n  min-height:50px;\r\n}"],"sourceRoot":""}]);

// exports


/***/ }),

/***/ 3301:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
Object.defineProperty(__webpack_exports__, "__esModule", { value: true });
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0__katex_css__ = __webpack_require__(3211);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0__katex_css___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_0__katex_css__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1__css_Courses_css__ = __webpack_require__(332);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1__css_Courses_css___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_1__css_Courses_css__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2_react__ = __webpack_require__(0);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2_react___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_2_react__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3_educoder__ = __webpack_require__(5);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_4_axios__ = __webpack_require__(8);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_4_axios___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_4_axios__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_5__modals_Modals__ = __webpack_require__(180);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_6_moment__ = __webpack_require__(70);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_6_moment___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_6_moment__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_7__common_WorkDetailPageHeader__ = __webpack_require__(1889);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_8__reply_CommonWorkAppraiseReply__ = __webpack_require__(3541);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_9__CommonWorkAppraiseReviseAttachments__ = __webpack_require__(3545);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_10__common_LeaderIcon__ = __webpack_require__(2092);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_11_showdown__ = __webpack_require__(3213);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_11_showdown___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_11_showdown__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_12_showdown_katex__ = __webpack_require__(3214);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_12_showdown_katex___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_12_showdown_katex__);
var _createClass=function(){function defineProperties(target,props){for(var i=0;i<props.length;i++){var descriptor=props[i];descriptor.enumerable=descriptor.enumerable||false;descriptor.configurable=true;if("value"in descriptor)descriptor.writable=true;Object.defineProperty(target,descriptor.key,descriptor);}}return function(Constructor,protoProps,staticProps){if(protoProps)defineProperties(Constructor.prototype,protoProps);if(staticProps)defineProperties(Constructor,staticProps);return Constructor;};}();function _classCallCheck(instance,Constructor){if(!(instance instanceof Constructor)){throw new TypeError("Cannot call a class as a function");}}function _possibleConstructorReturn(self,call){if(!self){throw new ReferenceError("this hasn't been initialised - super() hasn't been called");}return call&&(typeof call==="object"||typeof call==="function")?call:self;}function _inherits(subClass,superClass){if(typeof superClass!=="function"&&superClass!==null){throw new TypeError("Super expression must either be null or a function, not "+typeof superClass);}subClass.prototype=Object.create(superClass&&superClass.prototype,{constructor:{value:subClass,enumerable:false,writable:true,configurable:true}});if(superClass)Object.setPrototypeOf?Object.setPrototypeOf(subClass,superClass):subClass.__proto__=superClass;}var CommonWorkAppraise=function(_Component){_inherits(CommonWorkAppraise,_Component);function CommonWorkAppraise(props){_classCallCheck(this,CommonWorkAppraise);var _this=_possibleConstructorReturn(this,(CommonWorkAppraise.__proto__||Object.getPrototypeOf(CommonWorkAppraise)).call(this,props));_this.getWork=function(){var workId=_this.props.match.params.workId;var studentWorkId=_this.props.match.params.studentWorkId;// https://www.showdoc.cc/127895880302646?page_id=1957586480118445
var url='/student_works/'+studentWorkId+'.json';__WEBPACK_IMPORTED_MODULE_4_axios___default.a.get(url).then(function(result){if(result.data.course_id){_this.setState(Object.assign({},result.data));}}).catch(function(error){console.log(error);});};_this.exportMdtoHtml=function(md){var newmd=md;var converter=new __WEBPACK_IMPORTED_MODULE_11_showdown___default.a.Converter({extensions:[__WEBPACK_IMPORTED_MODULE_12_showdown_katex___default()({// maybe you want katex to throwOnError
throwOnError:true,// disable displayMode
displayMode:false,// change errorColor to blue
errorColor:'#1500ff'})]});return converter.makeHtml(newmd);};_this.getReviseAttachments=function(){var studentWorkId=_this.props.match.params.studentWorkId;var url='/student_works/'+studentWorkId+'/supply_attachments.json';__WEBPACK_IMPORTED_MODULE_4_axios___default.a.get(url).then(function(result){if(result.data.revise_attachments){_this.setState(Object.assign({},result.data));}}).catch(function(error){console.log(error);});};_this.onAttachmentRemove=function(id){_this.setState({Modalstype:true,// Modalstopval:'确定要删除这个附件吗?',
Modalstopval:'是否确认删除?',ModalSave:function ModalSave(){return _this.deleteAttachment(id);},ModalCancel:_this.cancelAttachment});};_this.deleteAttachment=function(id){var url='/attachments/'+id+'.json';__WEBPACK_IMPORTED_MODULE_4_axios___default.a.delete(url,{}).then(function(response){if(response.data){var status=response.data.status;if(status==0){_this.getWork();_this.getReviseAttachments();_this.cancelAttachment();}}}).catch(function(error){console.log(error);});};_this.cancelAttachment=function(){_this.setState({Modalstype:false,Modalstopval:'',ModalSave:"",ModalCancel:""});};_this.onReplySuccess=function(){_this.getReviseAttachments();};_this.state={course_name:"",homework_name:"",search:'',attachments:[],revise_attachments:[]};return _this;}_createClass(CommonWorkAppraise,[{key:'componentDidUpdate',value:function componentDidUpdate(prevProps,prevState){if(this.props.match.params.studentWorkId!=prevProps.match.params.studentWorkId){this.getWork();this.getReviseAttachments();this.commonWorkAppraiseReply&&this.commonWorkAppraiseReply.fetchAllComments();}}},{key:'componentDidMount',value:function componentDidMount(){this.getWork();this.getReviseAttachments();}},{key:'render',value:function render(){var _this2=this;var dateFormat='YYYY-MM-DD HH:mm';var _state=this.state,course_name=_state.course_name,homework_name=_state.homework_name,search=_state.search,page=_state.page,loadingstate=_state.loadingstate,homework_status=_state.homework_status,reference_answer=_state.reference_answer,attachments=_state.attachments,homework_id=_state.homework_id,project_info=_state.project_info,work_members=_state.work_members,is_evaluation=_state.is_evaluation,description=_state.description,update_user_name=_state.update_user_name,commit_user_name=_state.commit_user_name,update_time=_state.update_time,commit_time=_state.commit_time,author_name=_state.author_name,revise_attachments=_state.revise_attachments,revise_reason=_state.revise_reason,atta_update_user=_state.atta_update_user,atta_update_time=_state.atta_update_time,atta_update_user_login=_state.atta_update_user_login,Modalstype=_state.Modalstype,Modalstopval=_state.Modalstopval,ModalCancel=_state.ModalCancel,ModalSave=_state.ModalSave,loadtype=_state.loadtype,is_leader_work=_state.is_leader_work;var courseId=this.props.match.params.coursesId;var category_id=this.props.match.params.category_id;var studentWorkId=this.props.match.params.studentWorkId;var isAdmin=this.props.isAdmin();document.title=course_name&&course_name;return __WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_7__common_WorkDetailPageHeader__["a" /* default */],Object.assign({},this.props,this.state,{noTab:true,moduleName:'作业详情',getReviseAttachments:this.getReviseAttachments}),__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_5__modals_Modals__["a" /* default */],{modalsType:Modalstype,modalsTopval:Modalstopval,modalCancel:ModalCancel,modalSave:ModalSave,loadtype:loadtype}),__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('div',{className:"appraise imageLayerParent ",style:{}},__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('style',null,'\n            .workAppraise>div:last-child {\n              border-bottom: none !important;\n            }\n          '),__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_3_educoder__["q" /* ImageLayer2 */],{parentSel:'.workAppraise',childSel:'a.imageTarget'}),__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('div',{className:"workAppraise"},(description||attachments&&attachments.length!=0)&&__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('div',{className:"stud-class-set edu-back-white padding20-30"},__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('div',{className:"color-grey-6 mb15 font-16"},'\u5185\u5BB9'),__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('div',{className:'markdown-body ml20',dangerouslySetInnerHTML:{__html:Object(__WEBPACK_IMPORTED_MODULE_3_educoder__["_0" /* markdownToHTML */])(description)}}),attachments.map(function(item,key){return __WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('div',{className:'color-grey',key:key},__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('a',{className:'color-grey ml20'},__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('i',{className:'font-14 color-green iconfont icon-fujian mr8','aria-hidden':'true'})),__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('a',{href:item.url,className:'mr12 color9B9B imageTarget',length:'58',title:''+(item.title&&item.title.length>40?item.title:'')},item.title),__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{className:'color656565 mt2 color-grey-6 font-12 mr8'},item.filesize),item.delete===true?__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('i',{className:'font-14 iconfont  icon-guanbi ',id:item.id,'aria-hidden':'true',onClick:function onClick(){return _this2.onAttachmentRemove(item.id);}}):"");}),__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('div',{className:"color-grey-6 h20 ml20"},update_time&&__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_2_react___default.a.Fragment,null,__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{className:"color9B9B fr"},'\u66F4\u65B0'),__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{className:"fr font-14 mr10 ml10"},update_user_name),__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{className:"color9B9B fr"},__WEBPACK_IMPORTED_MODULE_6_moment___default()(update_time).format('YYYY-MM-DD HH:mm')==="Invalid date"?"":__WEBPACK_IMPORTED_MODULE_6_moment___default()(update_time).format('YYYY-MM-DD HH:mm'))),commit_time&&__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_2_react___default.a.Fragment,null,__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{className:"color9B9B fr mr30"},'\u63D0\u4EA4'),__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{className:"fr font-14 mr10 ml10"},commit_user_name),__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('span',{className:" color9B9B fr"},__WEBPACK_IMPORTED_MODULE_6_moment___default()(commit_time).format('YYYY-MM-DD HH:mm')==="Invalid date"?"":__WEBPACK_IMPORTED_MODULE_6_moment___default()(commit_time).format('YYYY-MM-DD HH:mm'))))),__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_9__CommonWorkAppraiseReviseAttachments__["a" /* default */],Object.assign({},this.state,{onAttachmentRemove:this.onAttachmentRemove})),is_evaluation!=true&&project_info&&project_info.name&&__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('div',{className:"stud-class-set bor-top-greyE edu-back-white padding20-30"},__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('div',{className:"color-grey-6 mb10"},'\u5173\u8054\u9879\u76EE'),__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('div',{className:"ml20"},__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('a',{className:'color-blue',href:'/projects/'+project_info.id},project_info.name))),is_evaluation!=true&&work_members&&!!work_members.length&&__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('div',{className:"stud-class-set bor-top-greyE edu-back-white padding20-30"},__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('div',{className:"color-grey-6 mb10"},'\u5168\u90E8\u7EC4\u5458'),__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('div',{className:"ml20 color-grey-6"},__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('div',{className:''},'\u5F53\u524D\u7EC4\u5458\uFF1A',author_name,' ',is_leader_work&&__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_10__common_LeaderIcon__["a" /* default */],{small:true})),__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('div',null,'\u5176\u4ED6\u7EC4\u5458\uFF1A',work_members.map(function(item,index){return __WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_2_react___default.a.Fragment,null,isAdmin?__WEBPACK_IMPORTED_MODULE_2_react___default.a.createElement('a',{className:'color-blue '+(index==0?'':'ml12'),href:'javascript:void(0)',onClick:function onClick(){return 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var _createClass=function(){function defineProperties(target,props){for(var i=0;i<props.length;i++){var descriptor=props[i];descriptor.enumerable=descriptor.enumerable||false;descriptor.configurable=true;if("value"in descriptor)descriptor.writable=true;Object.defineProperty(target,descriptor.key,descriptor);}}return function(Constructor,protoProps,staticProps){if(protoProps)defineProperties(Constructor.prototype,protoProps);if(staticProps)defineProperties(Constructor,staticProps);return Constructor;};}();function _classCallCheck(instance,Constructor){if(!(instance instanceof Constructor)){throw new TypeError("Cannot call a class as a function");}}function _possibleConstructorReturn(self,call){if(!self){throw new ReferenceError("this hasn't been initialised - super() hasn't been called");}return call&&(typeof call==="object"||typeof call==="function")?call:self;}function _inherits(subClass,superClass){if(typeof superClass!=="function"&&superClass!==null){throw new TypeError("Super expression must either be null or a function, not "+typeof superClass);}subClass.prototype=Object.create(superClass&&superClass.prototype,{constructor:{value:subClass,enumerable:false,writable:true,configurable:true}});if(superClass)Object.setPrototypeOf?Object.setPrototypeOf(subClass,superClass):subClass.__proto__=superClass;}var REPLY_PAGE_COUNT=10;var $=window.$;/* 

*/var CommonWorkAppraiseReply=function(_Component){_inherits(CommonWorkAppraiseReply,_Component);function CommonWorkAppraiseReply(props){_classCallCheck(this,CommonWorkAppraiseReply);var _this=_possibleConstructorReturn(this,(CommonWorkAppraiseReply.__proto__||Object.getPrototypeOf(CommonWorkAppraiseReply)).call(this,props));_this.fetchAllComments=function(){var category_id=_this.props.match.params.category_id;// const url = `/graduation_works/${category_id}/comment_list.json`
var task_id=_this.props.task_id;var url="/student_works/"+task_id+"/comment_list.json";__WEBPACK_IMPORTED_MODULE_2_axios___default.a.get(url).then(function(result){if(result.data.comment_scores){var comment_scores=result.data.comment_scores.map(function(item){return _this.transformReply(item);});_this.setState(Object.assign({},result.data,{comment_scores:comment_scores}));}}).catch(function(error){console.log(error);});};_this.replySuccess=function(){_this.fetchAllComments();};_this.addSuccess=function(){_this.fetchAllComments();};_this.transformReply=function(reply){var children=arguments.length>1&&arguments[1]!==undefined?arguments[1]:[];var isAdmin=_this.props.isAdmin();var isSuperAdmin=_this.props.isSuperAdmin();if(reply.appeal_info&&reply.appeal_info.time){reply.appeal_info.user_info={"user_name":reply.appeal_info.user_name,"user_login":reply.appeal_info.user_login,"user_image_url":reply.appeal_info.user_image_url};reply.appeal_info.is_appeal_info=true;reply.appeal_info.appeal_status=reply.appeal_status;reply.appeal_info.score_id=reply.score_id;reply.journals.push(reply.appeal_info);reply.journals=__WEBPACK_IMPORTED_MODULE_4_lodash___default.a.orderBy(reply.journals,'time','asc');}return{isSuperAdmin:isSuperAdmin,admin:isAdmin,//
journals:reply.journals,appeal_status:reply.appeal_status,attachments:reply.attachments,can_appeal:reply.can_appeal,can_reply:reply.can_reply,child_message_count:reply.child_message_count,id:reply.comment_id,// time: moment(reply.comment_time).fromNow(),
time:__WEBPACK_IMPORTED_MODULE_3_moment___default()(reply.comment_time).format('YYYY-MM-DD HH:mm'),image_url:reply.user_image_url,user_id:reply.user_id,user_login:reply.user_login,username:reply.user_name,content:reply.content,score:reply.score,delete:reply.delete,is_invalid:reply.is_invalid,comment_role:reply.comment_role};};_this.onDelete=function(item){_this.props.confirm({content:'确定要删除这个评阅吗?',okText:'确定',cancelText:'取消',onOk:function onOk(){var category_id=_this.props.match.params.category_id;var task_id=_this.props.task_id;// 作业是使用 task_id
var url="/student_works/"+task_id+"/destroy_score.json";__WEBPACK_IMPORTED_MODULE_2_axios___default.a.delete(url,{data:{score_id:item.id}}).then(function(result){if(result.data.status==0){_this.props.showNotification('删除成功');_this.fetchAllComments();}}).catch(function(error){console.log(error);});},onCancel:function onCancel(){console.log('Cancel');}});};_this.showModulationtype=function(id){// console.log(id)
_this.setState({Modulationtype:true,operationId:id});};_this.cancelmodel=function(){_this.setState({Modalstype:false,Loadtype:false,visible:false,Modulationtype:false,Allocationtype:false,Modalstopval:"",ModalCancel:"",ModalSave:""});};_this.saveModulationModal=function(value,num){console.log(value,num);var operationId=_this.state.operationId;var studentWorkId=_this.props.match.params.studentWorkId;// console.log(value,num)
var url="/student_works/"+studentWorkId+"/adjust_score.json";__WEBPACK_IMPORTED_MODULE_2_axios___default.a.post(url,{score:num,comment:value}).then(function(result){// console.log(result)
if(result.data.status===0){// this.setState({
//   Modalstype:true,
//   Allocationtype:false,
//   Modalstopval:result.data.message,
//   ModalSave:this.cancelmodel,
// })
_this.cancelmodel();_this.props.showNotification('调分成功');_this.props.onReplySuccess&&_this.props.onReplySuccess();_this.fetchAllComments();}}).catch(function(error){console.log(error);});};_this.onReply=function(params){var task_id=_this.props.task_id;var replyUrl="/student_works/"+task_id+"/add_score.json";__WEBPACK_IMPORTED_MODULE_2_axios___default.a.post(replyUrl,params).then(function(response){if(response.data.status==0){_this.editorRef.current.clearInputs();_this.fetchAllComments();_this.props.onReplySuccess&&_this.props.onReplySuccess();}}).catch(function(error){console.log(error);});};_this.editorRef=__WEBPACK_IMPORTED_MODULE_0_react___default.a.createRef();_this.state={total_count:0,comment_scores:[]};return _this;}_createClass(CommonWorkAppraiseReply,[{key:"componentDidMount",value:function componentDidMount(){this.fetchAllComments();}},{key:"render",value:function render(){var _this2=this;var _state=this.state,total_count=_state.total_count,comments=_state.comments,pageCount=_state.pageCount,comment_scores=_state.comment_scores,allow_score=_state.allow_score;var _props=this.props,current_user=_props.current_user,memo=_props.memo,homework_status=_props.homework_status;var isAdmin=this.props.isAdmin();var isNiPing=homework_status&&homework_status.indexOf('匿评中')!=-1;var isGroup=this.props.isGroup();/**
      isAdmin || 评阅入口：超级管理员、老师和助教显示；  -》 改成admin也不显示
      匿评人：匿评期间显示
     *///  && isNiPing
var needNiPingEditor=allow_score;if(!needNiPingEditor&&comment_scores.length==0){return'';}return __WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_0_react___default.a.Fragment,null,__WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement("div",{className:"edu-back-white padding10-10",style:{marginTop:'16px'}},__WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement("div",{className:"stud-class-set edu-back-white mb10",style:{height:"100%"}},__WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_14__modals_Modals__["a" /* default */],{modalsType:this.state.Modalstype,modalsTopval:this.state.Modalstopval,modalCancel:this.state.ModalCancel,modalSave:this.state.ModalSave,closable:false,footer:null,destroyOnClose:true,centered:true}),this.state.Modulationtype===true?__WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_13__coursesPublic_ModulationModal__["a" /* default */],{modalname:"调分",visible:this.state.Modulationtype,Cancelname:"取消",Savesname:"保存",Cancel:this.cancelmodel,Saves:function Saves(value,num){return _this2.saveModulationModal(value,num);},closable:false,footer:null,destroyOnClose:true,centered:true}):"",__WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement("div",{className:"padding20-30 "+(comment_scores.length?'bor-bottom-greyE':'')},!!comment_scores.length&&__WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement("div",{className:"color-grey-6 font-16"},"\u5168\u90E8\u8BC4\u9605",__WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement("span",{className:"count"},comment_scores.length===0?"":"("+comment_scores.length+")"),isAdmin&&!allow_score&&__WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement("a",{className:"fr color-blue font-16",onClick:function onClick(){return _this2.showModulationtype(_this2.props.task_id);}},"\u8C03\u5206")),needNiPingEditor&&__WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_6__graduation_tasks_GraduationTasksappraiseMainEditor__["a" /* default */],Object.assign({},this.props,{title:'评语',showModulationtype:this.showModulationtype,addSuccess:this.addSuccess,ref:this.editorRef,totalCount:comment_scores.length,onReply:this.onReply,placeholder:"请在此输入对本作品的评语，最大限制2000个字符",showSameScore:isGroup&&isAdmin}))),__WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement("div",{className:"padding20  memoReplies commentsDelegateParent course-message",style:{paddingTop:'0px',paddingBottom:'0px'}},__WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement("style",null,"\n              \n              .course-message .panel-comment_item .comment_orig_content {\n                width: 1040px;\n              }\n              .course-message .childrenCommentsView .comment_orig_content {\n                width: 1000px;\n              }\n              \n              .comment_item_cont:last-child {\n                border-bottom: none;\n              }\n            "),!!comment_scores.length&&__WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement("div",{className:"panel-comment_item"},comment_scores.map(function(item,index){return __WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_7__common_comments_CCommentItem__["a" /* default */],Object.assign({item:item,onDelete:_this2.onDelete},_this2.props,{commentIndex:index,replySuccess:_this2.replySuccess}));}))))));}}]);return CommonWorkAppraiseReply;}(__WEBPACK_IMPORTED_MODULE_0_react__["Component"]);/* harmony default export */ __webpack_exports__["a"] = (Object(__WEBPACK_IMPORTED_MODULE_5__page_layers_ImageLayerOfCommentHOC__["a" /* ImageLayerOfCommentHOC */])()(CommonWorkAppraiseReply));

/***/ }),

/***/ 3542:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_antd_lib_tooltip_style_css__ = __webpack_require__(175);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_antd_lib_tooltip_style_css___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_0_antd_lib_tooltip_style_css__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_antd_lib_tooltip__ = __webpack_require__(174);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_antd_lib_tooltip___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_1_antd_lib_tooltip__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2__katex_css__ = __webpack_require__(3211);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2__katex_css___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_2__katex_css__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3_react__ = __webpack_require__(0);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3_react___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_3_react__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_4_educoder__ = __webpack_require__(5);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_5__tpm_challengesnew_TPMMDEditor__ = __webpack_require__(339);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_6_axios__ = __webpack_require__(8);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_6_axios___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_6_axios__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_7_moment__ = __webpack_require__(70);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_7_moment___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_7_moment__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_8_showdown__ = __webpack_require__(3213);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_8_showdown___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_8_showdown__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_9_showdown_katex__ = __webpack_require__(3214);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_9_showdown_katex___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_9_showdown_katex__);
var _createClass=function(){function defineProperties(target,props){for(var i=0;i<props.length;i++){var descriptor=props[i];descriptor.enumerable=descriptor.enumerable||false;descriptor.configurable=true;if("value"in descriptor)descriptor.writable=true;Object.defineProperty(target,descriptor.key,descriptor);}}return function(Constructor,protoProps,staticProps){if(protoProps)defineProperties(Constructor.prototype,protoProps);if(staticProps)defineProperties(Constructor,staticProps);return Constructor;};}();function _classCallCheck(instance,Constructor){if(!(instance instanceof Constructor)){throw new TypeError("Cannot call a class as a function");}}function _possibleConstructorReturn(self,call){if(!self){throw new ReferenceError("this hasn't been initialised - super() hasn't been called");}return call&&(typeof call==="object"||typeof call==="function")?call:self;}function _inherits(subClass,superClass){if(typeof superClass!=="function"&&superClass!==null){throw new TypeError("Super expression must either be null or a function, not "+typeof superClass);}subClass.prototype=Object.create(superClass&&superClass.prototype,{constructor:{value:subClass,enumerable:false,writable:true,configurable:true}});if(superClass)Object.setPrototypeOf?Object.setPrototypeOf(subClass,superClass):subClass.__proto__=superClass;}var _origin='';/**
	https://www.showdoc.cc/127895880302646?page_id=1962215317836957
	comment_scores[:appeal_status]	int	0：正常；1：申诉中，2：撤销申诉；3：申诉成功；4：申诉被拒绝；5：申诉失效
 */var ACCEPT=3;var REFUSE=4;var CCommentItem=function(_Component){_inherits(CCommentItem,_Component);function CCommentItem(props){_classCallCheck(this,CCommentItem);var _this=_possibleConstructorReturn(this,(CCommentItem.__proto__||Object.getPrototypeOf(CCommentItem)).call(this,props));_this.cancelReply=function(){_this.setState({show_reply:false});};_this.showReply=function(){_this.setState({show_reply:true,show_appeal:false});};_this.showAppeal=function(){_this.setState({show_appeal:true,show_reply:false});};_this.cancelAppeal=function(){_this.setState({show_appeal:false});};_this.onCancel=function(){_this.state.show_reply?_this.cancelReply():_this.cancelAppeal();};_this.cancelMyAppeal=function(){_this.props.confirm({content:__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',null,__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',null,'\u64A4\u9500\u7533\u8BC9\u540E\uFF0C\u65E0\u6CD5\u518D\u5BF9\u672C\u8BC4\u9605\u8BB0\u5F55\u8FDB\u884C\u7533\u8BC9'),__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',null,'\u662F\u5426\u786E\u8BA4\u64A4\u9500\u7533\u8BC9')),onOk:function onOk(){var studentWorkId=_this.props.match.params.studentWorkId;var _this$props=_this.props,item=_this$props.item,commentIndex=_this$props.commentIndex;var url='/student_works/'+studentWorkId+'/cancel_appeal.json';__WEBPACK_IMPORTED_MODULE_6_axios___default.a.post(url,{score_id:item.id}).then(function(response){if(response.data.status==0){_this.props.showNotification('撤销成功');_this.props.replySuccess();}}).catch(function(error){console.log(error);});}});};_this.onSubmit=function(){var workId=_this.props.match.params.workId;var studentWorkId=_this.props.match.params.studentWorkId;var _this$props2=_this.props,item=_this$props2.item,commentIndex=_this$props2.commentIndex;if(!_this.state.secondReplyContent||!_this.state.secondReplyContent.trim()){_this.props.showNotification('内容不能为空');return;}if(_this.state.show_reply){var url='/student_works/'+studentWorkId+'/add_score_reply.json';__WEBPACK_IMPORTED_MODULE_6_axios___default.a.post(url,{score_id:item.id,comment:_this.state.secondReplyContent}).then(function(result){if(result.data.status==0){_this.props.replySuccess();_this.cancelReply();}}).catch(function(error){console.log(error);});}else{var appealUrl='/student_works/'+studentWorkId+'/appeal_anonymous_score.json';__WEBPACK_IMPORTED_MODULE_6_axios___default.a.post(appealUrl,{score_id:item.id,comment:_this.state.secondReplyContent}).then(function(result){if(result.data.status==0){_this.props.replySuccess();_this.cancelAppeal();}}).catch(function(error){console.log(error);});}};_this.onDeleteSecondReply=function(item){_this.props.confirm({// content: `确认要删除所选的${len}个帖子吗？`,
content:'\u662F\u5426\u786E\u8BA4\u5220\u9664?',onOk:function onOk(){var url='/commons/delete.json';__WEBPACK_IMPORTED_MODULE_6_axios___default.a.delete(url,{data:{object_id:item.id,object_type:'journals_for_message'}}).then(function(response){if(response.data.status==0){_this.props.replySuccess();_this.cancelAppeal();}}).catch(function(error){console.log(error);});}});};_this.on_deal_appeal_score=function(mode,item){_this.props.confirm({// content: `确认要删除所选的${len}个帖子吗？`,
content:__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',null,__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',null,mode==ACCEPT?'此匿评成绩将被废弃，评阅人的作品将被违规扣分':'此匿评成绩将被认为合理'),__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',null,'\u662F\u5426\u786E\u8BA4',mode==ACCEPT?'接受申诉':'拒绝申诉')),onOk:function onOk(){var studentWorkId=_this.props.match.params.studentWorkId;var url='/student_works/'+studentWorkId+'/deal_appeal_score.json';__WEBPACK_IMPORTED_MODULE_6_axios___default.a.post(url,{score_id:item.score_id,status:mode}).then(function(response){if(response.data.status==0){_this.props.showNotification((mode==ACCEPT?'接受申诉':'拒绝申诉')+'\u6210\u529F');_this.props.replySuccess();}}).catch(function(error){console.log(error);});}});};_this.parseCommentContent=function(oldContent){return Object(__WEBPACK_IMPORTED_MODULE_4_educoder__["_0" /* markdownToHTML */])(oldContent);};_this.exportMdtoHtml=function(md){var newmd=md;var converter=new __WEBPACK_IMPORTED_MODULE_8_showdown___default.a.Converter({extensions:[__WEBPACK_IMPORTED_MODULE_9_showdown_katex___default()({// maybe you want katex to throwOnError
throwOnError:true,// disable displayMode
displayMode:false,// change errorColor to blue
errorColor:'#1500ff'})]});return converter.makeHtml(newmd);};_this.renderChildenComments=function(parent){if(parent.journals.length==0){return'';}var isAdmin=_this.props.isAdmin();/**
		can_delete: true
		content: "qwe"
		id: 81136
		time: "2019-06-04T11:00:21.000+08:00"

		user_image_url: "avatars/User/1"
		user_login: "innov"
		user_name: "社区导师"
		*/// is_appeal_info true 是匿评人匿评信息，需要统一使用头像去掉链接
return parent.journals.map(function(item){// <div>{item.content} {item.user_info.user_name}</div>
// src={getImageUrl(`images/${item.image_url}`)}
var imgSrc=!item.user_info.user_image_url||item.user_info.user_image_url==='--'?'edu_user/anony.png':item.user_info.user_image_url;return __WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',{className:'comment_item_cont appraise df clearfix',key:item.id},__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',{className:'J_Comment_Face fl'},item.is_appeal_info==true?__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('a',{href:'javascript:void(0)',target:'_blank'},__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('img',{alt:'\u7528\u6237\u5934\u50CF',height:'50',src:Object(__WEBPACK_IMPORTED_MODULE_4_educoder__["U" /* getUrl */])()+'/images/edu_user/anony.png',width:'50'})):__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('a',{href:_origin+'/users/'+item.user_info.user_login,target:'_blank'},__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('img',{alt:'\u7528\u6237\u5934\u50CF',height:'50',src:''+Object(__WEBPACK_IMPORTED_MODULE_4_educoder__["M" /* getImageUrl */])('images/'+imgSrc),width:'50'}))),__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',{className:'t_content fl'},__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',{className:'J_Comment_Reply'},__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',{className:'comment_orig_content',style:{margin:"0px"}},__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',{className:'J_Comment_Info clearfix mt3'},__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',{className:'t_info fl'},item.user_info.user_login==="--"?__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('a',{className:'content-username hide fl'},item.user_info.user_name):__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('a',{href:_origin+'/users/'+item.user_info.user_login,className:'content-username hide fl'},item.user_info.user_name),__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('span',{className:'t_area fl'},__WEBPACK_IMPORTED_MODULE_7_moment___default()(item.time).format('YYYY-MM-DD HH:mm')),item.is_appeal_info&&(item.appeal_status==1?__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('span',{className:"edu-filter-btn edu-filter-btn-4CACFF ml15 fl typestyle "},'\u7533\u8BC9\u4E2D'):item.appeal_status==2?__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('span',{className:"edu-filter-btn edu-filter-btn-EDEDED ml15 fl typestyle color666666 "},'\u7533\u8BC9\u5DF2\u64A4\u9500'):item.appeal_status==3?__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('span',{className:"edu-filter-btn edu-filter-btn-4CACFF ml15 fl typestyle "},'\u7533\u8BC9\u6210\u529F'):item.appeal_status==4?__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('span',{className:"edu-filter-btn edu-filter-btn-EDEDED ml15 fl typestyle color666666 "},'\u7533\u8BC9\u88AB\u62D2\u7EDD'):item.appeal_status==5?__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('span',{className:"edu-filter-btn edu-filter-btn-EDEDED ml15 fl typestyle color666666 "},'\u7533\u8BC9\u5931\u8D25'):''),!item.is_appeal_info&&item.can_delete==true&&__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_1_antd_lib_tooltip___default.a,{title:'\u5220\u9664'},__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('i',{className:'iconfont icon-shanchu mr5 fr font-14',onClick:function onClick(){return _this.onDeleteSecondReply(item);},style:{cursor:'pointer'}})),item.is_appeal_info&&isAdmin&&item.appeal_status==1&&_this.props.isAdmin()===true&&__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_3_react___default.a.Fragment,null,__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_4_educoder__["A" /* WordsBtn */],{style:'grey',onClick:function onClick(){return _this.on_deal_appeal_score(REFUSE,item);},className:'fr ml6'},'\u62D2\u7EDD\u7533\u8BC9'),__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_4_educoder__["A" /* WordsBtn */],{style:'orange',onClick:function onClick(){return _this.on_deal_appeal_score(ACCEPT,item);},className:'fr'},'\u63A5\u53D7\u7533\u8BC9')),item.appeal_status==1&&_this.props.is_author==true&&_this.props.isStudent()===true&&__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_4_educoder__["A" /* WordsBtn */],{style:'blue',className:'fr mr5',onClick:function onClick(){return _this.cancelMyAppeal();}},'\u64A4\u9500\u7533\u8BC9'))),__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',{className:'comment_content  clearfix',id:'reply_content_'+item.id},__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',{className:'color-grey-3',id:'reply_content_'+item.id},__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',{className:"markdown-body",dangerouslySetInnerHTML:{__html:Object(__WEBPACK_IMPORTED_MODULE_4_educoder__["_0" /* markdownToHTML */])(item.content)}}),__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',{className:'cl'})))))));});};_this.state={show_reply:false,show_appeal:false};return _this;}_createClass(CCommentItem,[{key:'render',value:function render(){var _this2=this;var _props=this.props,item=_props.item,commentIndex=_props.commentIndex,homework_status=_props.homework_status,is_author=_props.is_author;var _state=this.state,show_reply=_state.show_reply,show_appeal=_state.show_appeal;var _content=item.content?Object(__WEBPACK_IMPORTED_MODULE_4_educoder__["_0" /* markdownToHTML */])(item.content):'';var isAnonymous=homework_status&&homework_status.indexOf('匿评中')!=-1;var isAppealing=homework_status&&homework_status.indexOf('申诉中')!=-1;var attachments=item.attachments;var isAdmin=this.props.isAdmin();return __WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',{className:'ccomment comment_item_cont df clearfix',key:item.id},__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',{className:'J_Comment_Face fl'},item.image_url=='--'?__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('a',{href:'javascript:void(0)'},__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('img',{alt:'\u7528\u6237\u5934\u50CF',height:'50',src:Object(__WEBPACK_IMPORTED_MODULE_4_educoder__["U" /* getUrl */])()+'/images/edu_user/anony.png',width:'50'})):__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('a',{href:_origin+'/users/'+item.user_login,target:'_blank'},__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('img',{alt:'\u7528\u6237\u5934\u50CF',height:'50',src:Object(__WEBPACK_IMPORTED_MODULE_4_educoder__["U" /* getUrl */])()+'/images/'+item.image_url,width:'50'}))),__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',{className:'t_content fl'},__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',{className:'J_Comment_Reply'},__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',{className:'comment_orig_content',style:{margin:"0px"}},__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',{className:'J_Comment_Info clearfix mt3'},__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',{className:'t_info fl'},item.user_login==="--"?__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('a',{className:'content-username hide fl'},item.username,'\uFF08',item.comment_role,'\uFF09'):__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('a',{href:_origin+'/users/'+item.user_login,className:'content-username hide fl'},item.username,'\uFF08',item.comment_role,'\uFF09'),__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('span',{className:'t_area fl'},item.time),item.score!==null&&__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('span',{className:'score_area fl'},item.score,'\u5206'),item.is_invalid?__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('span',{className:'validate_area fr'},'\u5931\u6548'):__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_3_react___default.a.Fragment,null,__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_4_educoder__["A" /* WordsBtn */],{style:'blue',className:'fr',onClick:this.state.show_reply?this.cancelReply:this.showReply},'\u56DE\u590D'),(isAppealing||isAnonymous)&&item.can_appeal&&item.appeal_status==0&&__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_4_educoder__["A" /* WordsBtn */],{style:'blue',className:'fr mr20',onClick:this.state.show_appeal?this.cancelAppeal:this.showAppeal},'\u7533\u8BC9')),item.delete&&isAdmin&&__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_4_educoder__["A" /* WordsBtn */],{style:'blue',className:'fr mr12',onClick:function onClick(){return _this2.props.onDelete(item);}},'\u5220\u9664'))),!!_content&&_content!=='null'&&__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',{className:'comment_content  clearfix mt8',id:'reply_content_'+item.id},__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',{className:'color-grey-3',id:'reply_content_'+item.id},__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',{className:"markdown-body",dangerouslySetInnerHTML:{__html:_content}}),__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',{className:'cl'}))),!_content&&__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('span',{className:'color656565 mt2 color-grey-9 font-12 mr8',style:{display:'inline-block'}},"暂未写评语"),__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',{className:'mt6'},attachments&&attachments.map(function(attaItem,key){return __WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',{className:'color-grey attachItem',key:key},__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('a',{className:'color-grey '},__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('i',{className:'font-14 color-green iconfont icon-fujian mr8','aria-hidden':'true'})),__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('a',{href:attaItem.url,className:'mr12 color9B9B',length:'58'},attaItem.title),__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('span',{className:'color656565 mt2 color-grey-6 font-12 mr8'},attaItem.filesize));})),__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('style',null,'\n\t\t\t\t\t\t\t\t\t.ccomment .childrenCommentsView .comment_item_cont .break_word_comments {\n\t\t\t\t\t\t\t\t\t\tmargin-top: 4px;\n\t\t\t\t\t\t\t\t\t\twidth: 94%;\n\t\t\t\t\t\t\t\t\t\tfont-size: 14px;\n\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t'),__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',{className:'childrenCommentsView',style:{background:'#fff'}},this.renderChildenComments(item)),__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('p',{className:''},(show_reply||show_appeal)&&__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_3_react___default.a.Fragment,null,__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_5__tpm_challengesnew_TPMMDEditor__["a" /* default */],{mdID:''+commentIndex,watch:false,height:130,onChange:function onChange(val){return _this2.setState({secondReplyContent:val});},placeholder:'\u8BF7\u8F93\u5165\u5185\u5BB9',noStorage:true}),__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('div',{className:'fr'},__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('a',{className:'task-btn task-btn-orange fr',style:{height:'26px',lineHeight:'26px',width:'60px'},onClick:this.onSubmit},this.state.show_reply?'回复':'申诉'),__WEBPACK_IMPORTED_MODULE_3_react___default.a.createElement('a',{onClick:this.onCancel,className:'defalutCancelbtn fr',style:{height:'26px',width:'60px',fontSize:'14px',lineHeight:'26px',marginRight:'10px'}},'\u53D6\u6D88'))))))));}}]);return CCommentItem;}(__WEBPACK_IMPORTED_MODULE_3_react__["Component"]);/* harmony default export */ __webpack_exports__["a"] = (CCommentItem);

/***/ }),

/***/ 3543:
/***/ (function(module, exports, __webpack_require__) {

// style-loader: Adds some css to the DOM by adding a <style> tag

// load the styles
var content = __webpack_require__(3544);
if(typeof content === 'string') content = [[module.i, content, '']];
// Prepare cssTransformation
var transform;

var options = {"hmr":false}
options.transform = transform
// add the styles to the DOM
var update = __webpack_require__(318)(content, options);
if(content.locals) module.exports = content.locals;


/***/ }),

/***/ 3544:
/***/ (function(module, exports, __webpack_require__) {

exports = module.exports = __webpack_require__(317)(true);
// imports


// module
exports.push([module.i, "", "", {"version":3,"sources":[],"names":[],"mappings":"","file":"CommonWorkAppraiseReply.css","sourceRoot":""}]);

// exports


/***/ }),

/***/ 3545:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_react__ = __webpack_require__(0);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_react___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_0_react__);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_moment__ = __webpack_require__(70);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_moment___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_1_moment__);
// import Example from './TestHooks'
function CommonWorkAppraiseReviseAttachments(props){var revise_attachments=props.revise_attachments,revise_reason=props.revise_reason,atta_update_time=props.atta_update_time,atta_update_user=props.atta_update_user;if(!revise_attachments)return'';return __WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement(__WEBPACK_IMPORTED_MODULE_0_react___default.a.Fragment,null,revise_attachments.length===0?"":__WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement('div',{className:"stud-class-set bor-top-greyE padding20-30 edu-back-white"},__WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement('style',null,'\n            .color-grey:hover i {\n                display: inline !important;\n            }\n            '),__WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement('div',{className:"color-grey-6 mb10 font-16"},'\u8865\u4EA4\u9644\u4EF6'),__WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement('div',{className:"ml20"},revise_reason),revise_attachments.map(function(item,key){return __WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement('div',{className:'color-grey',key:key},__WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement('a',{className:'color-grey ml20'},__WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement('i',{className:'font-14 color-green iconfont icon-fujian mr8','aria-hidden':'true'})),__WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement('a',{href:item.url,className:'mr12 color9B9B imageTarget',length:'58'},item.title),__WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement('span',{className:'color656565 mt2 color-grey-6 font-12 mr8'},item.filesize),item.delete===true?__WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement('i',{className:'font-14 iconfont  icon-guanbi ',style:{display:'none'},id:item.id,'aria-hidden':'true',onClick:function onClick(){return props.onAttachmentRemove(item.id);}}):"");}),__WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement('div',{className:"color-grey-6 clearfix lineh-25 ml20"},__WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement('span',{className:"color9B9B fr"},'\u66F4\u65B0'),__WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement('span',{className:"fr font-13 mr10 ml10"},atta_update_user),__WEBPACK_IMPORTED_MODULE_0_react___default.a.createElement('span',{className:"color9B9B fr"},__WEBPACK_IMPORTED_MODULE_1_moment___default()(atta_update_time).format('YYYY-MM-DD HH:mm')==="Invalid date"?"":__WEBPACK_IMPORTED_MODULE_1_moment___default()(atta_update_time).format('YYYY-MM-DD HH:mm')))));}/* harmony default export */ __webpack_exports__["a"] = (CommonWorkAppraiseReviseAttachments);

/***/ }),

/***/ 919:
/***/ (function(module, exports) {

/**
 * Checks if `value` is classified as an `Array` object.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is an array, else `false`.
 * @example
 *
 * _.isArray([1, 2, 3]);
 * // => true
 *
 * _.isArray(document.body.children);
 * // => false
 *
 * _.isArray('abc');
 * // => false
 *
 * _.isArray(_.noop);
 * // => false
 */
var isArray = Array.isArray;

module.exports = isArray;


/***/ }),

/***/ 920:
/***/ (function(module, exports, __webpack_require__) {

var baseIsNative = __webpack_require__(998),
    getValue = __webpack_require__(1001);

/**
 * Gets the native function at `key` of `object`.
 *
 * @private
 * @param {Object} object The object to query.
 * @param {string} key The key of the method to get.
 * @returns {*} Returns the function if it's native, else `undefined`.
 */
function getNative(object, key) {
  var value = getValue(object, key);
  return baseIsNative(value) ? value : undefined;
}

module.exports = getNative;


/***/ }),

/***/ 921:
/***/ (function(module, exports, __webpack_require__) {

var eq = __webpack_require__(925);

/**
 * Gets the index at which the `key` is found in `array` of key-value pairs.
 *
 * @private
 * @param {Array} array The array to inspect.
 * @param {*} key The key to search for.
 * @returns {number} Returns the index of the matched value, else `-1`.
 */
function assocIndexOf(array, key) {
  var length = array.length;
  while (length--) {
    if (eq(array[length][0], key)) {
      return length;
    }
  }
  return -1;
}

module.exports = assocIndexOf;


/***/ }),

/***/ 922:
/***/ (function(module, exports, __webpack_require__) {

var getNative = __webpack_require__(920);

/* Built-in method references that are verified to be native. */
var nativeCreate = getNative(Object, 'create');

module.exports = nativeCreate;


/***/ }),

/***/ 923:
/***/ (function(module, exports, __webpack_require__) {

var isKeyable = __webpack_require__(1010);

/**
 * Gets the data for `map`.
 *
 * @private
 * @param {Object} map The map to query.
 * @param {string} key The reference key.
 * @returns {*} Returns the map data.
 */
function getMapData(map, key) {
  var data = map.__data__;
  return isKeyable(key)
    ? data[typeof key == 'string' ? 'string' : 'hash']
    : data.map;
}

module.exports = getMapData;


/***/ }),

/***/ 924:
/***/ (function(module, exports, __webpack_require__) {

var isSymbol = __webpack_require__(326);

/** Used as references for various `Number` constants. */
var INFINITY = 1 / 0;

/**
 * Converts `value` to a string key if it's not a string or symbol.
 *
 * @private
 * @param {*} value The value to inspect.
 * @returns {string|symbol} Returns the key.
 */
function toKey(value) {
  if (typeof value == 'string' || isSymbol(value)) {
    return value;
  }
  var result = (value + '');
  return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
}

module.exports = toKey;


/***/ }),

/***/ 925:
/***/ (function(module, exports) {

/**
 * Performs a
 * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
 * comparison between two values to determine if they are equivalent.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to compare.
 * @param {*} other The other value to compare.
 * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
 * @example
 *
 * var object = { 'a': 1 };
 * var other = { 'a': 1 };
 *
 * _.eq(object, object);
 * // => true
 *
 * _.eq(object, other);
 * // => false
 *
 * _.eq('a', 'a');
 * // => true
 *
 * _.eq('a', Object('a'));
 * // => false
 *
 * _.eq(NaN, NaN);
 * // => true
 */
function eq(value, other) {
  return value === other || (value !== value && other !== other);
}

module.exports = eq;


/***/ }),

/***/ 926:
/***/ (function(module, exports, __webpack_require__) {

var isArray = __webpack_require__(919),
    isKey = __webpack_require__(938),
    stringToPath = __webpack_require__(1015),
    toString = __webpack_require__(988);

/**
 * Casts `value` to a path array if it's not one.
 *
 * @private
 * @param {*} value The value to inspect.
 * @param {Object} [object] The object to query keys on.
 * @returns {Array} Returns the cast property path array.
 */
function castPath(value, object) {
  if (isArray(value)) {
    return value;
  }
  return isKey(value, object) ? [value] : stringToPath(toString(value));
}

module.exports = castPath;


/***/ }),

/***/ 928:
/***/ (function(module, exports, __webpack_require__) {

var listCacheClear = __webpack_require__(993),
    listCacheDelete = __webpack_require__(994),
    listCacheGet = __webpack_require__(995),
    listCacheHas = __webpack_require__(996),
    listCacheSet = __webpack_require__(997);

/**
 * Creates an list cache object.
 *
 * @private
 * @constructor
 * @param {Array} [entries] The key-value pairs to cache.
 */
function ListCache(entries) {
  var index = -1,
      length = entries == null ? 0 : entries.length;

  this.clear();
  while (++index < length) {
    var entry = entries[index];
    this.set(entry[0], entry[1]);
  }
}

// Add methods to `ListCache`.
ListCache.prototype.clear = listCacheClear;
ListCache.prototype['delete'] = listCacheDelete;
ListCache.prototype.get = listCacheGet;
ListCache.prototype.has = listCacheHas;
ListCache.prototype.set = listCacheSet;

module.exports = ListCache;


/***/ }),

/***/ 932:
/***/ (function(module, exports) {

/** Used as references for various `Number` constants. */
var MAX_SAFE_INTEGER = 9007199254740991;

/** Used to detect unsigned integer values. */
var reIsUint = /^(?:0|[1-9]\d*)$/;

/**
 * Checks if `value` is a valid array-like index.
 *
 * @private
 * @param {*} value The value to check.
 * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
 * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
 */
function isIndex(value, length) {
  var type = typeof value;
  length = length == null ? MAX_SAFE_INTEGER : length;

  return !!length &&
    (type == 'number' ||
      (type != 'symbol' && reIsUint.test(value))) &&
        (value > -1 && value % 1 == 0 && value < length);
}

module.exports = isIndex;


/***/ }),

/***/ 935:
/***/ (function(module, exports, __webpack_require__) {

var getNative = __webpack_require__(920),
    root = __webpack_require__(173);

/* Built-in method references that are verified to be native. */
var Map = getNative(root, 'Map');

module.exports = Map;


/***/ }),

/***/ 936:
/***/ (function(module, exports, __webpack_require__) {

var mapCacheClear = __webpack_require__(1002),
    mapCacheDelete = __webpack_require__(1009),
    mapCacheGet = __webpack_require__(1011),
    mapCacheHas = __webpack_require__(1012),
    mapCacheSet = __webpack_require__(1013);

/**
 * Creates a map cache object to store key-value pairs.
 *
 * @private
 * @constructor
 * @param {Array} [entries] The key-value pairs to cache.
 */
function MapCache(entries) {
  var index = -1,
      length = entries == null ? 0 : entries.length;

  this.clear();
  while (++index < length) {
    var entry = entries[index];
    this.set(entry[0], entry[1]);
  }
}

// Add methods to `MapCache`.
MapCache.prototype.clear = mapCacheClear;
MapCache.prototype['delete'] = mapCacheDelete;
MapCache.prototype.get = mapCacheGet;
MapCache.prototype.has = mapCacheHas;
MapCache.prototype.set = mapCacheSet;

module.exports = MapCache;


/***/ }),

/***/ 937:
/***/ (function(module, exports) {

/** Used as references for various `Number` constants. */
var MAX_SAFE_INTEGER = 9007199254740991;

/**
 * Checks if `value` is a valid array-like length.
 *
 * **Note:** This method is loosely based on
 * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
 * @example
 *
 * _.isLength(3);
 * // => true
 *
 * _.isLength(Number.MIN_VALUE);
 * // => false
 *
 * _.isLength(Infinity);
 * // => false
 *
 * _.isLength('3');
 * // => false
 */
function isLength(value) {
  return typeof value == 'number' &&
    value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
}

module.exports = isLength;


/***/ }),

/***/ 938:
/***/ (function(module, exports, __webpack_require__) {

var isArray = __webpack_require__(919),
    isSymbol = __webpack_require__(326);

/** Used to match property names within property paths. */
var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/,
    reIsPlainProp = /^\w*$/;

/**
 * Checks if `value` is a property name and not a property path.
 *
 * @private
 * @param {*} value The value to check.
 * @param {Object} [object] The object to query keys on.
 * @returns {boolean} Returns `true` if `value` is a property name, else `false`.
 */
function isKey(value, object) {
  if (isArray(value)) {
    return false;
  }
  var type = typeof value;
  if (type == 'number' || type == 'symbol' || type == 'boolean' ||
      value == null || isSymbol(value)) {
    return true;
  }
  return reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||
    (object != null && value in Object(object));
}

module.exports = isKey;


/***/ }),

/***/ 949:
/***/ (function(module, exports, __webpack_require__) {

var baseGetTag = __webpack_require__(324),
    isObject = __webpack_require__(176);

/** `Object#toString` result references. */
var asyncTag = '[object AsyncFunction]',
    funcTag = '[object Function]',
    genTag = '[object GeneratorFunction]',
    proxyTag = '[object Proxy]';

/**
 * Checks if `value` is classified as a `Function` object.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a function, else `false`.
 * @example
 *
 * _.isFunction(_);
 * // => true
 *
 * _.isFunction(/abc/);
 * // => false
 */
function isFunction(value) {
  if (!isObject(value)) {
    return false;
  }
  // The use of `Object#toString` avoids issues with the `typeof` operator
  // in Safari 9 which returns 'object' for typed arrays and other constructors.
  var tag = baseGetTag(value);
  return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;
}

module.exports = isFunction;


/***/ }),

/***/ 950:
/***/ (function(module, exports) {

/** Used for built-in method references. */
var funcProto = Function.prototype;

/** Used to resolve the decompiled source of functions. */
var funcToString = funcProto.toString;

/**
 * Converts `func` to its source code.
 *
 * @private
 * @param {Function} func The function to convert.
 * @returns {string} Returns the source code.
 */
function toSource(func) {
  if (func != null) {
    try {
      return funcToString.call(func);
    } catch (e) {}
    try {
      return (func + '');
    } catch (e) {}
  }
  return '';
}

module.exports = toSource;


/***/ }),

/***/ 951:
/***/ (function(module, exports, __webpack_require__) {

var baseIsArguments = __webpack_require__(1014),
    isObjectLike = __webpack_require__(325);

/** Used for built-in method references. */
var objectProto = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty = objectProto.hasOwnProperty;

/** Built-in value references. */
var propertyIsEnumerable = objectProto.propertyIsEnumerable;

/**
 * Checks if `value` is likely an `arguments` object.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is an `arguments` object,
 *  else `false`.
 * @example
 *
 * _.isArguments(function() { return arguments; }());
 * // => true
 *
 * _.isArguments([1, 2, 3]);
 * // => false
 */
var isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) {
  return isObjectLike(value) && hasOwnProperty.call(value, 'callee') &&
    !propertyIsEnumerable.call(value, 'callee');
};

module.exports = isArguments;


/***/ }),

/***/ 952:
/***/ (function(module, exports, __webpack_require__) {

var castPath = __webpack_require__(926),
    toKey = __webpack_require__(924);

/**
 * The base implementation of `_.get` without support for default values.
 *
 * @private
 * @param {Object} object The object to query.
 * @param {Array|string} path The path of the property to get.
 * @returns {*} Returns the resolved value.
 */
function baseGet(object, path) {
  path = castPath(path, object);

  var index = 0,
      length = path.length;

  while (object != null && index < length) {
    object = object[toKey(path[index++])];
  }
  return (index && index == length) ? object : undefined;
}

module.exports = baseGet;


/***/ }),

/***/ 964:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.validProgress = validProgress;

// eslint-disable-next-line import/prefer-default-export
function validProgress(progress) {
  if (!progress || progress < 0) {
    return 0;
  }

  if (progress > 100) {
    return 100;
  }

  return progress;
}
//# sourceMappingURL=utils.js.map


/***/ }),

/***/ 965:
/***/ (function(module, exports, __webpack_require__) {

var baseGet = __webpack_require__(952);

/**
 * Gets the value at `path` of `object`. If the resolved value is
 * `undefined`, the `defaultValue` is returned in its place.
 *
 * @static
 * @memberOf _
 * @since 3.7.0
 * @category Object
 * @param {Object} object The object to query.
 * @param {Array|string} path The path of the property to get.
 * @param {*} [defaultValue] The value returned for `undefined` resolved values.
 * @returns {*} Returns the resolved value.
 * @example
 *
 * var object = { 'a': [{ 'b': { 'c': 3 } }] };
 *
 * _.get(object, 'a[0].b.c');
 * // => 3
 *
 * _.get(object, ['a', '0', 'b', 'c']);
 * // => 3
 *
 * _.get(object, 'a.b.c', 'default');
 * // => 'default'
 */
function get(object, path, defaultValue) {
  var result = object == null ? undefined : baseGet(object, path);
  return result === undefined ? defaultValue : result;
}

module.exports = get;


/***/ }),

/***/ 966:
/***/ (function(module, exports, __webpack_require__) {

var castPath = __webpack_require__(926),
    isArguments = __webpack_require__(951),
    isArray = __webpack_require__(919),
    isIndex = __webpack_require__(932),
    isLength = __webpack_require__(937),
    toKey = __webpack_require__(924);

/**
 * Checks if `path` exists on `object`.
 *
 * @private
 * @param {Object} object The object to query.
 * @param {Array|string} path The path to check.
 * @param {Function} hasFunc The function to check properties.
 * @returns {boolean} Returns `true` if `path` exists, else `false`.
 */
function hasPath(object, path, hasFunc) {
  path = castPath(path, object);

  var index = -1,
      length = path.length,
      result = false;

  while (++index < length) {
    var key = toKey(path[index]);
    if (!(result = object != null && hasFunc(object, key))) {
      break;
    }
    object = object[key];
  }
  if (result || ++index != length) {
    return result;
  }
  length = object == null ? 0 : object.length;
  return !!length && isLength(length) && isIndex(key, length) &&
    (isArray(object) || isArguments(object));
}

module.exports = hasPath;


/***/ }),

/***/ 981:
/***/ (function(module, exports) {

/**
 * Converts `set` to an array of its values.
 *
 * @private
 * @param {Object} set The set to convert.
 * @returns {Array} Returns the values.
 */
function setToArray(set) {
  var index = -1,
      result = Array(set.size);

  set.forEach(function(value) {
    result[++index] = value;
  });
  return result;
}

module.exports = setToArray;


/***/ }),

/***/ 988:
/***/ (function(module, exports, __webpack_require__) {

var baseToString = __webpack_require__(989);

/**
 * Converts `value` to a string. An empty string is returned for `null`
 * and `undefined` values. The sign of `-0` is preserved.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to convert.
 * @returns {string} Returns the converted string.
 * @example
 *
 * _.toString(null);
 * // => ''
 *
 * _.toString(-0);
 * // => '-0'
 *
 * _.toString([1, 2, 3]);
 * // => '1,2,3'
 */
function toString(value) {
  return value == null ? '' : baseToString(value);
}

module.exports = toString;


/***/ }),

/***/ 989:
/***/ (function(module, exports, __webpack_require__) {

var Symbol = __webpack_require__(184),
    arrayMap = __webpack_require__(991),
    isArray = __webpack_require__(919),
    isSymbol = __webpack_require__(326);

/** Used as references for various `Number` constants. */
var INFINITY = 1 / 0;

/** Used to convert symbols to primitives and strings. */
var symbolProto = Symbol ? Symbol.prototype : undefined,
    symbolToString = symbolProto ? symbolProto.toString : undefined;

/**
 * The base implementation of `_.toString` which doesn't convert nullish
 * values to empty strings.
 *
 * @private
 * @param {*} value The value to process.
 * @returns {string} Returns the string.
 */
function baseToString(value) {
  // Exit early for strings to avoid a performance hit in some environments.
  if (typeof value == 'string') {
    return value;
  }
  if (isArray(value)) {
    // Recursively convert values (susceptible to call stack limits).
    return arrayMap(value, baseToString) + '';
  }
  if (isSymbol(value)) {
    return symbolToString ? symbolToString.call(value) : '';
  }
  var result = (value + '');
  return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
}

module.exports = baseToString;


/***/ }),

/***/ 991:
/***/ (function(module, exports) {

/**
 * A specialized version of `_.map` for arrays without support for iteratee
 * shorthands.
 *
 * @private
 * @param {Array} [array] The array to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @returns {Array} Returns the new mapped array.
 */
function arrayMap(array, iteratee) {
  var index = -1,
      length = array == null ? 0 : array.length,
      result = Array(length);

  while (++index < length) {
    result[index] = iteratee(array[index], index, array);
  }
  return result;
}

module.exports = arrayMap;


/***/ }),

/***/ 993:
/***/ (function(module, exports) {

/**
 * Removes all key-value entries from the list cache.
 *
 * @private
 * @name clear
 * @memberOf ListCache
 */
function listCacheClear() {
  this.__data__ = [];
  this.size = 0;
}

module.exports = listCacheClear;


/***/ }),

/***/ 994:
/***/ (function(module, exports, __webpack_require__) {

var assocIndexOf = __webpack_require__(921);

/** Used for built-in method references. */
var arrayProto = Array.prototype;

/** Built-in value references. */
var splice = arrayProto.splice;

/**
 * Removes `key` and its value from the list cache.
 *
 * @private
 * @name delete
 * @memberOf ListCache
 * @param {string} key The key of the value to remove.
 * @returns {boolean} Returns `true` if the entry was removed, else `false`.
 */
function listCacheDelete(key) {
  var data = this.__data__,
      index = assocIndexOf(data, key);

  if (index < 0) {
    return false;
  }
  var lastIndex = data.length - 1;
  if (index == lastIndex) {
    data.pop();
  } else {
    splice.call(data, index, 1);
  }
  --this.size;
  return true;
}

module.exports = listCacheDelete;


/***/ }),

/***/ 995:
/***/ (function(module, exports, __webpack_require__) {

var assocIndexOf = __webpack_require__(921);

/**
 * Gets the list cache value for `key`.
 *
 * @private
 * @name get
 * @memberOf ListCache
 * @param {string} key The key of the value to get.
 * @returns {*} Returns the entry value.
 */
function listCacheGet(key) {
  var data = this.__data__,
      index = assocIndexOf(data, key);

  return index < 0 ? undefined : data[index][1];
}

module.exports = listCacheGet;


/***/ }),

/***/ 996:
/***/ (function(module, exports, __webpack_require__) {

var assocIndexOf = __webpack_require__(921);

/**
 * Checks if a list cache value for `key` exists.
 *
 * @private
 * @name has
 * @memberOf ListCache
 * @param {string} key The key of the entry to check.
 * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
 */
function listCacheHas(key) {
  return assocIndexOf(this.__data__, key) > -1;
}

module.exports = listCacheHas;


/***/ }),

/***/ 997:
/***/ (function(module, exports, __webpack_require__) {

var assocIndexOf = __webpack_require__(921);

/**
 * Sets the list cache `key` to `value`.
 *
 * @private
 * @name set
 * @memberOf ListCache
 * @param {string} key The key of the value to set.
 * @param {*} value The value to set.
 * @returns {Object} Returns the list cache instance.
 */
function listCacheSet(key, value) {
  var data = this.__data__,
      index = assocIndexOf(data, key);

  if (index < 0) {
    ++this.size;
    data.push([key, value]);
  } else {
    data[index][1] = value;
  }
  return this;
}

module.exports = listCacheSet;


/***/ }),

/***/ 998:
/***/ (function(module, exports, __webpack_require__) {

var isFunction = __webpack_require__(949),
    isMasked = __webpack_require__(999),
    isObject = __webpack_require__(176),
    toSource = __webpack_require__(950);

/**
 * Used to match `RegExp`
 * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).
 */
var reRegExpChar = /[\\^$.*+?()[\]{}|]/g;

/** Used to detect host constructors (Safari). */
var reIsHostCtor = /^\[object .+?Constructor\]$/;

/** Used for built-in method references. */
var funcProto = Function.prototype,
    objectProto = Object.prototype;

/** Used to resolve the decompiled source of functions. */
var funcToString = funcProto.toString;

/** Used to check objects for own properties. */
var hasOwnProperty = objectProto.hasOwnProperty;

/** Used to detect if a method is native. */
var reIsNative = RegExp('^' +
  funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\$&')
  .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$'
);

/**
 * The base implementation of `_.isNative` without bad shim checks.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a native function,
 *  else `false`.
 */
function baseIsNative(value) {
  if (!isObject(value) || isMasked(value)) {
    return false;
  }
  var pattern = isFunction(value) ? reIsNative : reIsHostCtor;
  return pattern.test(toSource(value));
}

module.exports = baseIsNative;


/***/ }),

/***/ 999:
/***/ (function(module, exports, __webpack_require__) {

var coreJsData = __webpack_require__(1000);

/** Used to detect methods masquerading as native. */
var maskSrcKey = (function() {
  var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');
  return uid ? ('Symbol(src)_1.' + uid) : '';
}());

/**
 * Checks if `func` has its source masked.
 *
 * @private
 * @param {Function} func The function to check.
 * @returns {boolean} Returns `true` if `func` is masked, else `false`.
 */
function isMasked(func) {
  return !!maskSrcKey && (maskSrcKey in func);
}

module.exports = isMasked;


/***/ })

});