fast array filter
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arr-filter NPM version NPM monthly downloads NPM total downloads Linux Build Status

Faster alternative to javascript's native filter method.


Install with npm:

$ npm install --save arr-filter


var filter = require('arr-filter');

filter(['a', {a: 'b'}, 1, 'b', 2, {c: 'd'}, 'c'], function (ele) {
  return typeof ele === 'string';
//=> ['a', 'b', 'c']

Why another array filter?

array-filter is pretty popular, but it's tuned to be used in older browsers and it falls back on native .filter() when available, which is much slower. See jsperf results. The functions used in the benchmarks are the top performers from a dozen or so other functions.


Related projects

  • arr-map: Faster, node.js focused alternative to JavaScript's native array map. | homepage
  • array-each: Loop over each item in an array and call the given function on every element. | homepage
  • collection-map: Returns an array of mapped values from an array or object. | homepage


Pull requests and stars are always welcome. For bugs and feature requests, please create an issue.

Building docs

(This project's is generated by verb, please don't edit the readme directly. Any changes to the readme must be made in the readme template.)

To generate the readme, run the following command:

$ npm install -g verbose/verb#dev verb-generate-readme && verb

Running tests

Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command:

$ npm install && npm test


Jon Schlinkert


Copyright © 2017, Jon Schlinkert. Released under the MIT License.

This file was generated by verb-generate-readme, v0.4.2, on February 26, 2017.