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# Array Flatten [![NPM version][npm-image]][npm-url] [![NPM downloads][downloads-image]][downloads-url] [![Build status][travis-image]][travis-url] [![Test coverage][coveralls-image]][coveralls-url] > Flatten an array of nested arrays into a single flat array. Accepts an optional depth. ## Installation ``` npm install array-flatten --save ``` ## Usage ```javascript var flatten = require('array-flatten') flatten([1, [2, [3, [4, [5], 6], 7], 8], 9]) //=> [1, 2, 3, 4, 5, 6, 7, 8, 9] flatten([1, [2, [3, [4, [5], 6], 7], 8], 9], 2) //=> [1, 2, 3, [4, [5], 6], 7, 8, 9] (function () { flatten(arguments) //=> [1, 2, 3] })(1, [2, 3]) ``` ## License MIT [npm-image]: https://img.shields.io/npm/v/array-flatten.svg?style=flat [npm-url]: https://npmjs.org/package/array-flatten [downloads-image]: https://img.shields.io/npm/dm/array-flatten.svg?style=flat [downloads-url]: https://npmjs.org/package/array-flatt