Package Exports

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (vow) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

NOTE. Documentation for old versions of the library can be found at https://github.com/dfilatov/vow/blob/0.3.x/README.md.

Vow 0.4.7

Vow is a Promises/A+ implementation. It also supports ES6 Promises specification.

Getting Started

In Node.js

You can install using Node Package Manager (npm):

npm install vow

In Browsers

<script type="text/javascript" src="vow.min.js"></script>

It also supports RequireJS module format and YM module format.

Vow has been tested in IE6+, Mozilla Firefox 3+, Chrome 5+, Safari 5+, Opera 10+.

Usage

Creating a promise

There are two possible ways to create a promise.

1. Using a deferred

function doSomethingAsync() {
    var deferred = vow.defer();
    
    // now you can resolve, reject, notify corresponging promise within `deferred`
    // e.g. `defer.resolve('ok');`
        
    return deferred.promise(); // and return corresponding promise to subscribe to reactions
}

doSomethingAsync().then(
    function() {}, // onFulfilled reaction
    function() {}, // onRejected reaction
    function() {}  // onNotified reaction
    );

The difference between deferred and promise is that deferred contains methods to resolve, reject and notify corresponding promise, but the promise by itself allows only to subscribe on these actions.

2. ES6-compatible way

function doSomethingAsync() {
    return new vow.Promise(function(resolve, reject, notify) {
        // now you can resolve, reject, notify the promise
    });
}

doSomethingAsync().then(
    function() {}, // onFulfilled reaction
    function() {}, // onRejected reaction
    function() {}  // onNotified reaction
    );

Full API reference can be found at http://dfilatov.github.io/vow/.

vow-fs — vow-based file I/O for Node.js
vow-node — extension for vow to work with nodejs-style callbacks
vow-queue — vow-based task queue with weights and priorities
vow-asker — wraps asker API in the vow promises implementation

vow