alt="Promises/A+ logo"
title="Promises/A+ 1.1 compliant" align="right" />


PPP

A slim promise implementation.

- Status: UNSTABLE - Versions 0.8.x are preview releases, with possible API breaking changes between patch versions. I look forward to nailing down the API for version 1.0.x.

$3

- to provide a simple, no-frills, compliant promise implementation.
- to limit the use of closure scope / function binding in an effort to lower memory thrashing in projects that make extensive promise use.
- to provide a measure of debug-ability despite asynchronous execution.

$3

``
npm install ppp
`

`javascript
var ppp = require('ppp');

var defer = ppp.Promise.defer();

defer.promise.then(function onSuccess(res) {
console.log(res);
});

defer.resolve('hello world');
`

##### As a native polyfill

`javascript
(function (global) {
if (!global.Promise) {
global.Promise = require('ppp').Promise;
}
})(this);
`

$3

- Promises A+ Spec
- ECMAScript 2015 Promise

$3

##### grunt benchmark

`
# Memory:All
ppp@0.8.6: 1.65 MB ±0.08 MB

bluebird@2.9.30: 1.96 MB ±0.15 MB
q@1.4.1: 6.66 MB ±1.05 MB
vow@0.4.10: 3.65 MB ±0.38 MB

# Memory:Then
ppp@0.8.6: 0.63 MB ±0.04 MB

bluebird@2.9.30: 1.31 MB ±0.13 MB
q@1.4.1: 3.52 MB ±0.49 MB
vow@0.4.10: 1.37 MB ±0.15 MB

# Cpu:All
ppp@0.8.6: 461 ops/sec ±1.18 %

bluebird@2.9.30: 419 ops/sec ±1.44 %
q@1.4.1: 142 ops/sec ±3.94 %
vow@0.4.10: 426 ops/sec ±1.10 %

# Cpu:Then
ppp@0.8.6: 486 ops/sec ±1.39 %

bluebird@2.9.30: 417 ops/sec ±2.03 %
q@1.4.1: 191 ops/sec ±3.40 %
vow@0.4.10: 459 ops/sec ±1.51 %
`

##### test/benchmark.html (Chrome)

`
# Cpu:All
ppp: 156 ops/sec ±0.61 %

bluebird: 78.70 ops/sec ±0.48 %
q: 134 ops/sec ±4.08 %
vow: 155 ops/sec ±0.77 %

# Cpu:Then
ppp: 158 ops/sec ±0.61 %

bluebird: 76.47 ops/sec ±1.20 %
q: 159 ops/sec ±2.70 %
vow: 156 ops/sec ±0.37 %
``