delayed.js

/*****************************************************************
  * Delayed: A collection of setTimeout-related function wranglers
  * Copyright (c) Rod Vagg (@rvagg) 2014
  * https://github.com/rvagg/delayed
  * License: MIT
  */

;(function init (name, definition) {
  if (typeof module !== 'undefined' && module.exports) {
    module.exports = definition()
  } else {
    this[name] = definition()
  }
}('delayed', function setup () {
  const context = this
  const old = context.delayed
  const deferMs = 1

  function slice (arr, i) {
    return Array.prototype.slice.call(arr, i)
  }

  function delay (fn, ms, ctx) {
    var args = slice(arguments, 3)
    return setTimeout(function delayer () {
      fn.apply(ctx || null, args)
    }, ms)
  }

  function defer (fn, ctx) {
    return delay.apply(null, [ fn, deferMs, ctx ].concat(slice(arguments, 2)))
  }

  function delayed () {
    var args = slice(arguments)
    return function delayeder () {
      return delay.apply(null, args.concat(slice(arguments)))
    }
  }

  function deferred (fn, ctx) {
    return delayed.apply(null, [ fn, deferMs, ctx ].concat(slice(arguments, 2)))
  }

  function cumulativeDelayed (fn, ms, ctx) {
    var args = slice(arguments, 3)

    var timeout = null

    return function cumulativeDelayeder () {
      var _args = slice(arguments)

      var f = function cumulativeDelayedCaller () {
        return fn.apply(ctx || null, args.concat(_args))
      }
      if (timeout != null) { clearTimeout(timeout) }
      timeout = setTimeout(f, ms)
      return timeout
    }
  }

  function noConflict () {
    context.delayed = old
    return this
  }

  return {
    delay: delay,
    defer: defer,
    delayed: delayed,
    deferred: deferred,
    noConflict: noConflict,
    cumulativeDelayed: cumulativeDelayed,
    debounce: cumulativeDelayed
  }
}))