<h1 align="center">Neo-Async</h1>

<p align="center">

<img src="https://raw.githubusercontent.com/wiki/suguru03/neo-async/images/neo_async_v2.png" width="250px" />

</p>

<p align="center">

<a href="https://www.npmjs.com/package/neo-async"><img alt="npm" src="https://img.shields.io/npm/v/neo-async.svg"></a>
<a href="https://travis-ci.org/suguru03/neo-async"><img alt="Travis Status" src="https://img.shields.io/travis/suguru03/neo-async.svg"></a>
<a href="https://codecov.io/gh/suguru03/neo-async"><img alt="Coverage Status" src="https://img.shields.io/codecov/c/github/suguru03/neo-async/master.svg"></a>
<a href="https://www.npmjs.com/package/neo-async"><img alt="download" src="https://img.shields.io/npm/dm/neo-async.svg"></a>
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</p>

Neo-Async is thought to be used as a drop-in replacement for Async, it almost fully covers its functionality and runs [faster](#benchmark).

Benchmark is [here](#benchmark)!

Bluebird's benchmark is here!

Code Coverage

!coverage

Installation

In a browser

html
<script src="async.min.js"></script>

In an AMD loader

js
require(['async'], function(async) {});

Promise and async/await

I recommend to use [Aigle](https://github.com/suguru03/aigle).

It is optimized for Promise handling and has almost the same functionality as neo-async.

Node.js

standard

bash
$ npm install neo-async

js
var async = require('neo-async');

replacement

bash
$ npm install neo-async
$ ln -s ./node_modules/neo-async ./node_modules/async

js
var async = require('async');

Bower

bash
bower install neo-async

Feature

JSDoc

\* not in Async

Collections

• [each](http://suguru03.github.io/neo-async/doc/async.each.html)
• [eachSeries](http://suguru03.github.io/neo-async/doc/async.eachSeries.html)
• [eachLimit](http://suguru03.github.io/neo-async/doc/async.eachLimit.html)
• [forEach](http://suguru03.github.io/neo-async/doc/async.each.html) -> [each](http://suguru03.github.io/neo-async/doc/async.each.html)
• [forEachSeries](http://suguru03.github.io/neo-async/doc/async.eachSeries.html) -> [eachSeries](http://suguru03.github.io/neo-async/doc/async.eachSeries.html)
• [forEachLimit](http://suguru03.github.io/neo-async/doc/async.eachLimit.html) -> [eachLimit](http://suguru03.github.io/neo-async/doc/async.eachLimit.html)
• [eachOf](http://suguru03.github.io/neo-async/doc/async.each.html) -> [each](http://suguru03.github.io/neo-async/doc/async.each.html)
• [eachOfSeries](http://suguru03.github.io/neo-async/doc/async.eachSeries.html) -> [eachSeries](http://suguru03.github.io/neo-async/doc/async.eachSeries.html)
• [eachOfLimit](http://suguru03.github.io/neo-async/doc/async.eachLimit.html) -> [eachLimit](http://suguru03.github.io/neo-async/doc/async.eachLimit.html)
• [forEachOf](http://suguru03.github.io/neo-async/doc/async.each.html) -> [each](http://suguru03.github.io/neo-async/doc/async.each.html)
• [forEachOfSeries](http://suguru03.github.io/neo-async/doc/async.eachSeries.html) -> [eachSeries](http://suguru03.github.io/neo-async/doc/async.eachSeries.html)
• [eachOfLimit](http://suguru03.github.io/neo-async/doc/async.eachLimit.html) -> [forEachLimit](http://suguru03.github.io/neo-async/doc/async.eachLimit.html)
• [map](http://suguru03.github.io/neo-async/doc/async.map.html)
• [mapSeries](http://suguru03.github.io/neo-async/doc/async.mapSeries.html)
• [mapLimit](http://suguru03.github.io/neo-async/doc/async.mapLimit.html)
• [mapValues](http://suguru03.github.io/neo-async/doc/async.mapValues.html)
• [mapValuesSeries](http://suguru03.github.io/neo-async/doc/async.mapValuesSeries.html)
• [mapValuesLimit](http://suguru03.github.io/neo-async/doc/async.mapValuesLimit.html)
• [filter](http://suguru03.github.io/neo-async/doc/async.filter.html)
• [filterSeries](http://suguru03.github.io/neo-async/doc/async.filterSeries.html)
• [filterLimit](http://suguru03.github.io/neo-async/doc/async.filterLimit.html)
• [select](http://suguru03.github.io/neo-async/doc/async.filter.html) -> [filter](http://suguru03.github.io/neo-async/doc/async.filter.html)
• [selectSeries](http://suguru03.github.io/neo-async/doc/async.filterSeries.html) -> [filterSeries](http://suguru03.github.io/neo-async/doc/async.filterSeries.html)
• [selectLimit](http://suguru03.github.io/neo-async/doc/async.filterLimit.html) -> [filterLimit](http://suguru03.github.io/neo-async/doc/async.filterLimit.html)
• [reject](http://suguru03.github.io/neo-async/doc/async.reject.html)
• [rejectSeries](http://suguru03.github.io/neo-async/doc/async.rejectSeries.html)
• [rejectLimit](http://suguru03.github.io/neo-async/doc/async.rejectLimit.html)
• [detect](http://suguru03.github.io/neo-async/doc/async.detect.html)
• [detectSeries](http://suguru03.github.io/neo-async/doc/async.detectSeries.html)
• [detectLimit](http://suguru03.github.io/neo-async/doc/async.detectLimit.html)
• [find](http://suguru03.github.io/neo-async/doc/async.detect.html) -> [detect](http://suguru03.github.io/neo-async/doc/async.detect.html)
• [findSeries](http://suguru03.github.io/neo-async/doc/async.detectSeries.html) -> [detectSeries](http://suguru03.github.io/neo-async/doc/async.detectSeries.html)
• [findLimit](http://suguru03.github.io/neo-async/doc/async.detectLimit.html) -> [detectLimit](http://suguru03.github.io/neo-async/doc/async.detectLimit.html)
• [pick](http://suguru03.github.io/neo-async/doc/async.pick.html) *
• [pickSeries](http://suguru03.github.io/neo-async/doc/async.pickSeries.html) *
• [pickLimit](http://suguru03.github.io/neo-async/doc/async.pickLimit.html) *
• [omit](http://suguru03.github.io/neo-async/doc/async.omit.html) *
• [omitSeries](http://suguru03.github.io/neo-async/doc/async.omitSeries.html) *
• [omitLimit](http://suguru03.github.io/neo-async/doc/async.omitLimit.html) *
• [reduce](http://suguru03.github.io/neo-async/doc/async.reduce.html)
• [inject](http://suguru03.github.io/neo-async/doc/async.reduce.html) -> [reduce](http://suguru03.github.io/neo-async/doc/async.reduce.html)
• [foldl](http://suguru03.github.io/neo-async/doc/async.reduce.html) -> [reduce](http://suguru03.github.io/neo-async/doc/async.reduce.html)
• [reduceRight](http://suguru03.github.io/neo-async/doc/async.reduceRight.html)
• [foldr](http://suguru03.github.io/neo-async/doc/async.reduceRight.html) -> [reduceRight](http://suguru03.github.io/neo-async/doc/async.reduceRight.html)
• [transform](http://suguru03.github.io/neo-async/doc/async.transform.html)
• [transformSeries](http://suguru03.github.io/neo-async/doc/async.transformSeries.html) *
• [transformLimit](http://suguru03.github.io/neo-async/doc/async.transformLimit.html) *
• [sortBy](http://suguru03.github.io/neo-async/doc/async.sortBy.html)
• [sortBySeries](http://suguru03.github.io/neo-async/doc/async.sortBySeries.html) *
• [sortByLimit](http://suguru03.github.io/neo-async/doc/async.sortByLimit.html) *
• [some](http://suguru03.github.io/neo-async/doc/async.some.html)
• [someSeries](http://suguru03.github.io/neo-async/doc/async.someSeries.html)
• [someLimit](http://suguru03.github.io/neo-async/doc/async.someLimit.html)
• [any](http://suguru03.github.io/neo-async/doc/async.some.html) -> [some](http://suguru03.github.io/neo-async/doc/async.some.html)
• [anySeries](http://suguru03.github.io/neo-async/doc/async.someSeries.html) -> [someSeries](http://suguru03.github.io/neo-async/doc/async.someSeries.html)
• [anyLimit](http://suguru03.github.io/neo-async/doc/async.someLimit.html) -> [someLimit](http://suguru03.github.io/neo-async/doc/async.someLimit.html)
• [every](http://suguru03.github.io/neo-async/doc/async.every.html)
• [everySeries](http://suguru03.github.io/neo-async/doc/async.everySeries.html)
• [everyLimit](http://suguru03.github.io/neo-async/doc/async.everyLimit.html)
• [all](http://suguru03.github.io/neo-async/doc/async.every.html) -> [every](http://suguru03.github.io/neo-async/doc/async.every.html)
• [allSeries](http://suguru03.github.io/neo-async/doc/async.everySeries.html) -> [every](http://suguru03.github.io/neo-async/doc/async.everySeries.html)
• [allLimit](http://suguru03.github.io/neo-async/doc/async.everyLimit.html) -> [every](http://suguru03.github.io/neo-async/doc/async.everyLimit.html)
• [concat](http://suguru03.github.io/neo-async/doc/async.concat.html)
• [concatSeries](http://suguru03.github.io/neo-async/doc/async.concatSeries.html)
• [concatLimit](http://suguru03.github.io/neo-async/doc/async.concatLimit.html) *

Control Flow

• [parallel](http://suguru03.github.io/neo-async/doc/async.parallel.html)
• [series](http://suguru03.github.io/neo-async/doc/async.series.html)
• [parallelLimit](http://suguru03.github.io/neo-async/doc/async.series.html)
• [tryEach](http://suguru03.github.io/neo-async/doc/async.tryEach.html)
• [waterfall](http://suguru03.github.io/neo-async/doc/async.waterfall.html)
• [angelFall](http://suguru03.github.io/neo-async/doc/async.angelFall.html) *
• [angelfall](http://suguru03.github.io/neo-async/doc/async.angelFall.html) -> [angelFall](http://suguru03.github.io/neo-async/doc/async.angelFall.html) *
• [whilst](#whilst)
• [doWhilst](#doWhilst)
• [until](#until)
• [doUntil](#doUntil)
• [during](#during)
• [doDuring](#doDuring)
• [forever](#forever)
• [compose](#compose)
• [seq](#seq)
• [applyEach](#applyEach)
• [applyEachSeries](#applyEachSeries)
• [queue](#queue)
• [priorityQueue](#priorityQueue)
• [cargo](#cargo)
• [auto](#auto)
• [autoInject](#autoInject)
• [retry](#retry)
• [retryable](#retryable)
• [iterator](#iterator)
• [times](http://suguru03.github.io/neo-async/doc/async.times.html)
• [timesSeries](http://suguru03.github.io/neo-async/doc/async.timesSeries.html)
• [timesLimit](http://suguru03.github.io/neo-async/doc/async.timesLimit.html)
• [race](#race)

• 1. Utils
• [apply](#apply)
• [setImmediate](#setImmediate)
• [nextTick](#nextTick)
• [memoize](#memoize)
• [unmemoize](#unmemoize)
• [ensureAsync](#ensureAsync)
• [constant](#constant)
• [asyncify](#asyncify)
• [wrapSync](#asyncify) -> [asyncify](#asyncify)
• [log](#log)
• [dir](#dir)
• [timeout](http://suguru03.github.io/neo-async/doc/async.timeout.html)
• [reflect](#reflect)
• [reflectAll](#reflectAll)
• [createLogger](#createLogger)

• 1. Mode
• [safe](#safe) *
• [fast](#fast) *

Benchmark

Benchmark: Async vs Neo-Async

How to check

bash
$ node perf

Environment

• Darwin 17.3.0 x64
• Node.js v8.9.4
• async v2.6.0
• neo-async v2.5.0
• benchmark v2.1.4

Result

The value is the ratio (Neo-Async/Async) of the average speed.

Collections

Control Flow

License