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Your Name 65928e6714 Codespell / Check for spelling errors (push) Has been cancelled Details promote / promote (push) Has been cancelled Details Close stale issues / Stale (push) Has been cancelled Details 初始提交		2025-09-19 13:59:55 +08:00
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LICENSE	初始提交	2025-09-19 13:59:55 +08:00
README.md	初始提交	2025-09-19 13:59:55 +08:00
package.json	初始提交	2025-09-19 13:59:55 +08:00
wrappy.js	初始提交	2025-09-19 13:59:55 +08:00

README.md

wrappy

Callback wrapping utility

USAGE

var wrappy = require("wrappy")

// var wrapper = wrappy(wrapperFunction)

// make sure a cb is called only once
// See also: http://npm.im/once for this specific use case
var once = wrappy(function (cb) {
  var called = false
  return function () {
    if (called) return
    called = true
    return cb.apply(this, arguments)
  }
})

function printBoo () {
  console.log('boo')
}
// has some rando property
printBoo.iAmBooPrinter = true

var onlyPrintOnce = once(printBoo)

onlyPrintOnce() // prints 'boo'
onlyPrintOnce() // does nothing

// random property is retained!
assert.equal(onlyPrintOnce.iAmBooPrinter, true)