diff --git a/libs/horizon/src/dom/DOMPropertiesHandler/StyleHandler.ts b/libs/horizon/src/dom/DOMPropertiesHandler/StyleHandler.ts
index ae576bfe..49429fbe 100644
--- a/libs/horizon/src/dom/DOMPropertiesHandler/StyleHandler.ts
+++ b/libs/horizon/src/dom/DOMPropertiesHandler/StyleHandler.ts
@@ -1,3 +1,14 @@
+function isNeedUnitCSS(propName: string) {
+  return !(noUnitCSS.includes(propName)
+    || propName.startsWith('borderImage')
+    || propName.startsWith('flex')
+    || propName.startsWith('gridRow')
+    || propName.startsWith('gridColumn')
+    || propName.startsWith('stroke')
+    || propName.startsWith('box')
+    || propName.endsWith('Opacity'));
+}
+
 /**
  * 对一些没有写单位的样式进行适配，例如：width: 10 => width: 10px
  * 对空值或布尔值进行适配，转为空字符串
@@ -38,14 +49,3 @@ export function setStyles(dom, styles) {
  */
 const noUnitCSS = ['animationIterationCount', 'columnCount', 'columns', 'gridArea', 'fontWeight', 'lineClamp',
   'lineHeight', 'opacity', 'order', 'orphans', 'tabSize', 'widows', 'zIndex', 'zoom'];
-
-function isNeedUnitCSS(propName: string) {
-  return !(noUnitCSS.includes(propName)
-    || propName.startsWith('borderImage')
-    || propName.startsWith('flex')
-    || propName.startsWith('gridRow')
-    || propName.startsWith('gridColumn')
-    || propName.startsWith('stroke')
-    || propName.startsWith('box')
-    || propName.endsWith('Opacity'));
-}
diff --git a/libs/horizon/src/dom/DOMPropertiesHandler/UpdateCommonProp.ts b/libs/horizon/src/dom/DOMPropertiesHandler/UpdateCommonProp.ts
index a2fe3e9d..5af59913 100644
--- a/libs/horizon/src/dom/DOMPropertiesHandler/UpdateCommonProp.ts
+++ b/libs/horizon/src/dom/DOMPropertiesHandler/UpdateCommonProp.ts
@@ -21,7 +21,6 @@ const svgHumpAttr = new Set(['allowReorder', 'autoReverse', 'baseFrequency', 'ba
 // 驼峰 变 “-”
 function convertToLowerCase(str) {
   const replacer = (match, char) => `-${char.toLowerCase()}`;
-  
   return str.replace(/([A-Z])/g, replacer);
 }
 
diff --git a/libs/horizon/src/dom/SelectionRangeHandler.ts b/libs/horizon/src/dom/SelectionRangeHandler.ts
index 62931335..284faa41 100644
--- a/libs/horizon/src/dom/SelectionRangeHandler.ts
+++ b/libs/horizon/src/dom/SelectionRangeHandler.ts
@@ -107,9 +107,9 @@ export function getSelectionInfo() {
 
 export interface SelectionData {
   focusedDom: HTMLInputElement | HTMLTextAreaElement | void;
-  selectionRange: {
-    start: number | null;
-    end: number | null;
+  selectionRange?: {
+    start: number;
+    end: number;
   };
 }
 
diff --git a/libs/horizon/src/dom/utils/Interface.ts b/libs/horizon/src/dom/utils/Interface.ts
index b4805619..2306d4b3 100644
--- a/libs/horizon/src/dom/utils/Interface.ts
+++ b/libs/horizon/src/dom/utils/Interface.ts
@@ -3,7 +3,7 @@ export interface IProperty {
 }
 
 export interface HorizonSelect extends HTMLSelectElement {
-  _multiple: boolean;
+  _multiple?: boolean;
 }
 
 export type HorizonDom = Element | HTMLInputElement | HTMLSelectElement | HTMLTextAreaElement;
diff --git a/libs/horizon/src/external/ChildrenUtil.ts b/libs/horizon/src/external/ChildrenUtil.ts
index c5eff12e..d1a928fb 100644
--- a/libs/horizon/src/external/ChildrenUtil.ts
+++ b/libs/horizon/src/external/ChildrenUtil.ts
@@ -12,6 +12,44 @@ function getItemKey(item: any, index: number): string {
   return '.' + index.toString(36);
 }
 
+function mapChildrenToArray(
+  children: any,
+  arr: Array<any>,
+  prefix: string,
+  callback?: Function,
+): number | void {
+  const type = typeof children;
+  switch (type) {
+    // 继承原有规格，undefined和boolean类型按照null处理
+    case 'undefined':
+    case 'boolean':
+      callMapFun(null, arr, prefix, callback);
+      return;
+    case 'number':
+    case 'string':
+      callMapFun(children, arr, prefix, callback);
+      return;
+    case 'object':
+      if (children === null) {
+        callMapFun(null, arr, prefix, callback);
+        return;
+      }
+      const vtype = children.vtype;
+      if (vtype === TYPE_COMMON_ELEMENT || vtype === TYPE_PORTAL) {
+        callMapFun(children, arr, prefix, callback) ;
+        return;
+      }
+      if (Array.isArray(children)) {
+        processArrayChildren(children, arr, prefix, callback);
+        return;
+      }
+      throw new Error(
+        'Object is invalid as a Horizon child. '
+      );
+    // No Default
+  }
+}
+
 function processArrayChildren(
   children: any,
   arr: Array<any>,
@@ -61,44 +99,6 @@ function callMapFun(
   }
 }
 
-function mapChildrenToArray(
-  children: any,
-  arr: Array<any>,
-  prefix: string,
-  callback?: Function,
-): number | void {
-  const type = typeof children;
-  switch (type) {
-    // 继承原有规格，undefined和boolean类型按照null处理
-    case 'undefined':
-    case 'boolean':
-      callMapFun(null, arr, prefix, callback);
-      return;
-    case 'number':
-    case 'string':
-      callMapFun(children, arr, prefix, callback);
-      return;
-    case 'object':
-      if (children === null) {
-        callMapFun(null, arr, prefix, callback);
-        return;
-      }
-      const vtype = children.vtype;
-      if (vtype === TYPE_COMMON_ELEMENT || vtype === TYPE_PORTAL) {
-        callMapFun(children, arr, prefix, callback) ;
-        return;
-      }
-      if (Array.isArray(children)) {
-        processArrayChildren(children, arr, prefix, callback);
-        return;
-      }
-      throw new Error(
-        'Object is invalid as a Horizon child. '
-      );
-    // No Default
-  }
-}
-
 // 在 children 里的每个直接子节点上调用一个函数，并将 this 设置为 thisArg
 function mapChildren(
   children: any,
diff --git a/libs/horizon/src/external/JSXElement.ts b/libs/horizon/src/external/JSXElement.ts
index f0218ac9..9a06a957 100644
--- a/libs/horizon/src/external/JSXElement.ts
+++ b/libs/horizon/src/external/JSXElement.ts
@@ -41,7 +41,7 @@ function buildElement(isClone, type, setting, ...children) {
   // setting中的值优先级最高，clone情况下从 type 中取值，创建情况下直接赋值为 null
   const key = (setting && setting.key !== undefined) ? String(setting.key) : (isClone ? type.key : null);
   const ref = (setting && setting.ref !== undefined) ? setting.ref : (isClone ? type.ref : null);
-  const props = isClone ? {...type.props} : {};
+  const props = isClone ? { ...type.props } : {};
   let vNode = isClone ? type.belongClassVNode : getProcessingClassVNode();
 
   if (setting != null) {
diff --git a/libs/horizon/src/renderer/ErrorHandler.ts b/libs/horizon/src/renderer/ErrorHandler.ts
index f4e66484..c6946c69 100644
--- a/libs/horizon/src/renderer/ErrorHandler.ts
+++ b/libs/horizon/src/renderer/ErrorHandler.ts
@@ -13,6 +13,55 @@ import {setRootThrowError} from './submit/Submit';
 import {handleSuspenseChildThrowError} from './render/SuspenseComponent';
 import {updateShouldUpdateOfTree} from './vnode/VNodeShouldUpdate';
 
+function consoleError(error: any): void {
+  if (isDev) {
+    // 只打印message为了让测试用例能pass
+    console['error']('The codes throw the error: ' + error.message);
+  } else {
+    console['error'](error);
+  }
+}
+
+function handleRootError(
+  error: any,
+) {
+  // 注意：如果根节点抛出错误，不会销毁整棵树，只打印日志，抛出异常。
+  setRootThrowError(error);
+  consoleError(error);
+}
+
+function createClassErrorUpdate(
+  vNode: VNode,
+  error: any,
+): Update {
+  const update = newUpdate();
+  update.type = UpdateState.Error;
+
+  const getDerivedStateFromError = vNode.type.getDerivedStateFromError;
+  if (typeof getDerivedStateFromError === 'function') {
+    update.content = () => {
+      consoleError(error);
+      return getDerivedStateFromError(error);
+    };
+  }
+
+  const inst = vNode.realNode;
+  if (inst !== null && typeof inst.componentDidCatch === 'function') {
+    update.callback = function callback() {
+      if (typeof getDerivedStateFromError !== 'function') {
+        // 打印错误
+        consoleError(error);
+      }
+
+      // @ts-ignore
+      this.componentDidCatch(error, {
+        componentStack: '',
+      });
+    };
+  }
+  return update;
+}
+
 // 处理capture和bubble阶段抛出的错误
 export function handleRenderThrowError(
   sourceVNode: VNode,
@@ -76,6 +125,19 @@ export function handleRenderThrowError(
   } while (vNode !== null);
 }
 
+// 新增一个update，并且触发调度
+function triggerUpdate(vNode, state) {
+  const update = newUpdate();
+  update.content = state;
+  pushUpdate(vNode, update);
+
+  const root = updateShouldUpdateOfTree(vNode);
+  if (root !== null) {
+    tryRenderRoot(root);
+  }
+}
+
+
 // 处理submit阶段的异常
 export function handleSubmitError(vNode: VNode, error: any) {
   if (vNode.tag === TreeRoot) {
@@ -126,64 +188,3 @@ export function handleSubmitError(vNode: VNode, error: any) {
     node = node.parent;
   }
 }
-
-function createClassErrorUpdate(
-  vNode: VNode,
-  error: any,
-): Update {
-  const update = newUpdate();
-  update.type = UpdateState.Error;
-
-  const getDerivedStateFromError = vNode.type.getDerivedStateFromError;
-  if (typeof getDerivedStateFromError === 'function') {
-    update.content = () => {
-      consoleError(error);
-      return getDerivedStateFromError(error);
-    };
-  }
-
-  const inst = vNode.realNode;
-  if (inst !== null && typeof inst.componentDidCatch === 'function') {
-    update.callback = function callback() {
-      if (typeof getDerivedStateFromError !== 'function') {
-        // 打印错误
-        consoleError(error);
-      }
-
-      // @ts-ignore
-      this.componentDidCatch(error, {
-        componentStack: '',
-      });
-    };
-  }
-  return update;
-}
-
-// 新增一个update，并且触发调度
-function triggerUpdate(vNode, state) {
-  const update = newUpdate();
-  update.content = state;
-  pushUpdate(vNode, update);
-
-  const root = updateShouldUpdateOfTree(vNode);
-  if (root !== null) {
-    tryRenderRoot(root);
-  }
-}
-
-function handleRootError(
-  error: any,
-) {
-  // 注意：如果根节点抛出错误，不会销毁整棵树，只打印日志，抛出异常。
-  setRootThrowError(error);
-  consoleError(error);
-}
-
-function consoleError(error: any): void {
-  if (isDev) {
-    // 只打印message为了让测试用例能pass
-    console['error']('The codes throw the error: ' + error.message);
-  } else {
-    console['error'](error);
-  }
-}
diff --git a/libs/horizon/src/renderer/TreeBuilder.ts b/libs/horizon/src/renderer/TreeBuilder.ts
index 7d6201a2..35caaba6 100644
--- a/libs/horizon/src/renderer/TreeBuilder.ts
+++ b/libs/horizon/src/renderer/TreeBuilder.ts
@@ -129,6 +129,27 @@ function handleError(root, error): void {
   bubbleVNode(processing);
 }
 
+// 判断数组中节点的path的idx元素是否都相等
+function isEqualByIndex(idx: number, nodes: Array<VNode>) {
+  let val = nodes[0].path[idx];
+  for (let i = 1; i < nodes.length; i++) {
+    let node = nodes[i];
+    if (val !== node.path[idx]) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+function getChildByIndex(vNode: VNode, idx: number) {
+  let node = vNode.child;
+  for (let i = 0; i < idx; i++) {
+    node = node.next;
+  }
+  return node;
+}
+
 // 从多个更新节点中，计算出开始节点。即：找到最近的共同的父辈节点
 export function calcStartUpdateVNode(treeRoot: VNode) {
   const toUpdateNodes = Array.from(treeRoot.toUpdateNodes);
@@ -292,27 +313,6 @@ export function launchUpdateFromVNode(vNode: VNode) {
   }
 }
 
-// 判断数组中节点的path的idx元素是否都相等
-function isEqualByIndex(idx: number, nodes: Array<VNode>) {
-  let val = nodes[0].path[idx];
-  for (let i = 1; i < nodes.length; i++) {
-    let node = nodes[i];
-    if (val !== node.path[idx]) {
-      return false;
-    }
-  }
-
-  return true;
-}
-
-function getChildByIndex(vNode: VNode, idx: number) {
-  let node = vNode.child;
-  for (let i = 0; i < idx; i++) {
-    node = node.next;
-  }
-  return node;
-}
-
 export function setBuildResultError() {
   if (getBuildResult() !== BuildCompleted) {
     setBuildResult(BuildErrored);
diff --git a/libs/horizon/src/renderer/diff/DiffTools.ts b/libs/horizon/src/renderer/diff/DiffTools.ts
index 0b14f611..9b152d92 100644
--- a/libs/horizon/src/renderer/diff/DiffTools.ts
+++ b/libs/horizon/src/renderer/diff/DiffTools.ts
@@ -2,9 +2,8 @@ import type { VNode, JSXElement } from '../Types';
 
 // 当前vNode和element是同样的类型
 // LazyComponent 会修改type的类型，所以特殊处理这种类型
-export const isSameType = (vNode: VNode, ele: JSXElement) => {
-  return vNode.type === ele.type || (vNode.isLazyComponent && vNode.lazyType === ele.type);
-};
+export const isSameType = (vNode: VNode, ele: JSXElement) =>
+   vNode.type === ele.type || (vNode.isLazyComponent && vNode.lazyType === ele.type);
 
 export function isTextType(newChild: any) {
   return typeof newChild === 'string' || typeof newChild === 'number';
diff --git a/libs/horizon/src/renderer/diff/nodeDiffComparator.ts b/libs/horizon/src/renderer/diff/nodeDiffComparator.ts
index b1f1203b..09624161 100644
--- a/libs/horizon/src/renderer/diff/nodeDiffComparator.ts
+++ b/libs/horizon/src/renderer/diff/nodeDiffComparator.ts
@@ -17,7 +17,7 @@ enum DiffCategory {
   TEXT_NODE = 'TEXT_NODE',
   OBJECT_NODE = 'OBJECT_NODE',
   ARR_NODE = 'ARR_NODE',
-};
+}
 
 // 检查是不是被 FRAGMENT 包裹
 function isNoKeyFragment(child: any) {
@@ -31,7 +31,7 @@ function deleteVNode(parentNode: VNode, delVNode: VNode): void {
 }
 
 // 清除多个节点
-function deleteVNodes(parentVNode: VNode, startDelVNode: VNode, endVNode?: VNode): void {
+function deleteVNodes(parentVNode: VNode, startDelVNode: VNode | null, endVNode?: VNode): void {
   let node = startDelVNode;
 
   while (node !== null) {
@@ -67,7 +67,7 @@ function checkCanReuseNode(oldNode: VNode | null, newChild: any): boolean {
   return false;
 }
 
-function getNodeType(newChild: any): string {
+function getNodeType(newChild: any): string | null {
   if (newChild === null) {
     return null;
   }
@@ -186,9 +186,7 @@ function transLeftChildrenToMap(
 
   travelChildren(startChild, (node) => {
     leftChildrenMap.set(node.key !== null ? node.key : node.eIndex, node);
-  }, (node) => {
-    return node === rightEndVNode;
-  });
+  }, node => node === rightEndVNode);
 
   return leftChildrenMap;
 }
@@ -208,6 +206,11 @@ function getOldNodeFromMap(nodeMap: Map<string | number, VNode>, newIdx: number,
   return null;
 }
 
+function setCIndex(vNode: VNode, idx: number) {
+  vNode.cIndex = idx;
+  updateVNodePath(vNode);
+}
+
 // diff数组类型的节点，核心算法
 function diffArrayNodes(
   parentNode: VNode,
@@ -277,7 +280,7 @@ function diffArrayNodes(
   // 从后往前，新资源的位置还没有到最末端，旧的vNode也还没遍历完，则可以考虑从后往前开始
   if (rightIdx > leftIdx && oldNode !== null) {
     const rightRemainingOldChildren = transRightChildrenToArray(oldNode);
-    let rightOldIndex = rightRemainingOldChildren.length - 1;
+    let rightOldIndex: number | null = rightRemainingOldChildren.length - 1;
 
     // 2. 从右侧开始比对currentVNode和newChildren，若不能复用则跳出循环
     for (; rightIdx > leftIdx; rightIdx--) {
@@ -377,7 +380,7 @@ function diffArrayNodes(
       if (oldNodeFromMap !== null) {
         let eIndex = newNode.eIndex;
         eIndexes.push(eIndex);
-        const last = eIndexes[result[result.length - 1]];
+        const last: number | undefined = eIndexes[result[result.length - 1]];
         if (eIndex > last || last === undefined) { // 大的 eIndex直接放在最后
           preIndex[i] = result[result.length - 1];
           result.push(i);
@@ -455,11 +458,6 @@ function setVNodesCIndex(startChild: VNode, startIdx: number) {
   }
 }
 
-function setCIndex(vNode: VNode, idx: number) {
-  vNode.cIndex = idx;
-  updateVNodePath(vNode);
-}
-
 // 新节点是数组类型
 function diffArrayNodesHandler(
   parentNode: VNode,
diff --git a/libs/horizon/src/renderer/hooks/UseReducerHook.ts b/libs/horizon/src/renderer/hooks/UseReducerHook.ts
index 58fbb7f6..52399713 100644
--- a/libs/horizon/src/renderer/hooks/UseReducerHook.ts
+++ b/libs/horizon/src/renderer/hooks/UseReducerHook.ts
@@ -14,7 +14,7 @@ import { getHookStage, HookStage } from './HookStage';
 import type { VNode } from '../Types';
 
 export function useReducerImpl<S, P, A>(reducer: (S, A) =>
-  S, initArg: P, init?: (P) => S, isUseState?: boolean): [S, Trigger<A>] {
+  S, initArg: P, init?: (P) => S, isUseState?: boolean): [S, Trigger<A>] | void {
   const stage = getHookStage();
   if (stage === null) {
     throwNotInFuncError();
diff --git a/libs/horizon/src/renderer/render/Fragment.ts b/libs/horizon/src/renderer/render/Fragment.ts
index a64c2532..27c2b5c1 100644
--- a/libs/horizon/src/renderer/render/Fragment.ts
+++ b/libs/horizon/src/renderer/render/Fragment.ts
@@ -1,10 +1,6 @@
 import type {VNode} from '../Types';
 import {createVNodeChildren} from './BaseComponent';
 
-export function captureRender(processing: VNode): VNode | null {
-  return captureFragment(processing);
-}
-
 export function bubbleRender() {}
 
 function captureFragment(processing: VNode) {
@@ -12,3 +8,7 @@ function captureFragment(processing: VNode) {
   processing.child = createVNodeChildren(processing, newElement);
   return processing.child;
 }
+
+export function captureRender(processing: VNode): VNode | null {
+  return captureFragment(processing);
+}
diff --git a/libs/horizon/src/renderer/render/MemoComponent.ts b/libs/horizon/src/renderer/render/MemoComponent.ts
index fd273249..d4a10d22 100644
--- a/libs/horizon/src/renderer/render/MemoComponent.ts
+++ b/libs/horizon/src/renderer/render/MemoComponent.ts
@@ -10,10 +10,6 @@ import {
 } from '../../external/JSXElementType';
 import {Fragment} from '../vnode/VNodeTags';
 
-export function captureRender(processing: VNode, shouldUpdate: boolean): VNode | null {
-  return captureMemoComponent(processing, shouldUpdate);
-}
-
 export function bubbleRender() {}
 
 export function captureMemoComponent(
@@ -59,3 +55,7 @@ export function captureMemoComponent(
 
   return newChild;
 }
+
+export function captureRender(processing: VNode, shouldUpdate: boolean): VNode | null {
+  return captureMemoComponent(processing, shouldUpdate);
+}
diff --git a/libs/horizon/src/renderer/submit/LifeCycleHandler.ts b/libs/horizon/src/renderer/submit/LifeCycleHandler.ts
index 68503458..9dafedd5 100644
--- a/libs/horizon/src/renderer/submit/LifeCycleHandler.ts
+++ b/libs/horizon/src/renderer/submit/LifeCycleHandler.ts
@@ -225,10 +225,10 @@ function unmountVNode(vNode: VNode): void {
 function unmountNestedVNodes(vNode: VNode): void {
   travelVNodeTree(vNode, (node) => {
     unmountVNode(node);
-  }, (node) => {
+  }, node =>
     // 如果是DomPortal，不需要遍历child
-    return node.tag === DomPortal;
-  });
+    node.tag === DomPortal
+  );
 }
 
 function submitAddition(vNode: VNode): void {
@@ -296,10 +296,9 @@ function unmountDomComponents(vNode: VNode): void {
     } else {
       unmountVNode(node);
     }
-  }, (node) => {
+  }, node =>
     // 如果是dom不用再遍历child
-    return node.tag === DomComponent || node.tag === DomText;
-  }, null, (node) => {
+    node.tag === DomComponent || node.tag === DomText, null, (node) => {
     if (node.tag === DomPortal) {
       // 当离开portal，需要重新设置parent
       currentParentIsValid = false;
diff --git a/libs/horizon/src/renderer/taskExecutor/RenderQueue.ts b/libs/horizon/src/renderer/taskExecutor/RenderQueue.ts
index 48b3fc72..31760489 100644
--- a/libs/horizon/src/renderer/taskExecutor/RenderQueue.ts
+++ b/libs/horizon/src/renderer/taskExecutor/RenderQueue.ts
@@ -12,6 +12,16 @@ let callingQueueTask: any | null = null;
 // 防止重入
 let isCallingRenderQueue = false;
 
+export function callRenderQueueImmediate() {
+  if (callingQueueTask !== null) {
+    // 取消异步调度
+    cancelTask(callingQueueTask);
+    callingQueueTask = null;
+  }
+
+  callRenderQueue();
+}
+
 // 执行render回调
 function callRenderQueue() {
   if (!isCallingRenderQueue && renderQueue !== null) {
@@ -54,13 +64,3 @@ export function pushRenderCallback(callback: RenderCallback) {
   // 返回一个空对象，用于区别null
   return {};
 }
-
-export function callRenderQueueImmediate() {
-  if (callingQueueTask !== null) {
-    // 取消异步调度
-    cancelTask(callingQueueTask);
-    callingQueueTask = null;
-  }
-
-  callRenderQueue();
-}
diff --git a/libs/horizon/src/renderer/utils/compare.ts b/libs/horizon/src/renderer/utils/compare.ts
index 3849ec85..e6fb69a1 100644
--- a/libs/horizon/src/renderer/utils/compare.ts
+++ b/libs/horizon/src/renderer/utils/compare.ts
@@ -42,9 +42,9 @@ export function shallowCompare(paramX: any, paramY: any): boolean {
       return false;
     }
 
-    return keysX.every((key, i) => {
-      return Object.prototype.hasOwnProperty.call(paramY, key) && isSame(paramX[key], paramY[keysX[i]]);
-    });
+    return keysX.every((key, i) =>
+      Object.prototype.hasOwnProperty.call(paramY, key) && isSame(paramX[key], paramY[keysX[i]])
+    );
   }
 
    return false;