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var controlAsync = require("control.async")

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control.async v0.5.3

Operations for asynchronous control flow.


Build Status NPM version Dependencies Status experimental

Operations for asynchronous control flow.


var fs    = require('fs')
var async = require('control.async')

var read = async.liftNode(fs.readFile)

var files = async.parallel([ read('foo.txt', 'utf-8')
                          , read('bar.txt', 'utf-8')
                          , read('baz.txt', 'utf-8')])

var concatenated = files.chain(function(xs){ return xs.join('') })

// Futures are pure, so you need to actually run the action to get
// the effects.
  function(error){ throw error }
, function(value){ console.log(value) }


The easiest way is to grab it from NPM. If you're running in a Browser environment, you can use [Browserify][]

$ npm install control.async

Using with CommonJS

If you're not using NPM, [Download the latest release][release], and require the control.async.umd.js file:

var Async = require('control.async')

Using with AMD

[Download the latest release][release], and require the control.async.umd.js file:

require(['control.async'], function(Async) {
  ( ... )

Using without modules

[Download the latest release][release], and load the control.async.umd.js file. The properties are exposed in the global Async object:

<script src="/path/to/control.async.umd.js"></script>

Compiling from source

If you want to compile this library from the source, you'll need [Git][], [Make][], [Node.js][], and run the following commands:

$ git clone git://
$ cd control.async
$ npm install
$ make bundle

This will generate the dist/control.async.umd.js file, which you can load in any JavaScript environment.


You can [read the documentation online][docs] or build it yourself:

$ git clone git://
$ cd control.async
$ npm install
$ make documentation

Then open the file docs/index.html in your browser.

Platform support

This library assumes an ES5 environment, but can be easily supported in ES3 platforms by the use of shims. Just include [es5-shim][] :)


Copyright (c) 2013-2014 Quildreen Motta.

Released under the MIT licence.

[Fantasy Land]: [Browserify]: [release]: [Git]: [Make]: [Node.js]: [es5-shim]: [docs]:


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