Array Flat Polyfill [][Array Flat Polyfill]

[![NPM Version][npm-img]][npm-url]
[![Build Status][cli-img]][cli-url]
[![Support Chat][git-img]][git-url]

[Array Flat Polyfill] is a polyfill for Array.prototype.flat and
Array.prototype.flatMap, following the [TC39 Proposal].

``sh
npm install array-flat-polyfill --save
`

The flat() method creates a new array with all sub-array elements
concatenated into it recursively up to the specified depth.

`js
[1, 2, [3, 4, [5, 6]]].flat(2) // [1, 2, 3, 4, 5, 6]
`

The flatMap() method maps each element using a mapping function, then
flattens the result into a new array.

`js
[1, 2, 3, 4].flatMap(x => [x * 2]); // [2, 4, 6, 8]
`

The script is 261 bytes when minified and gzipped. It works in all browsers,
going as far back as Internet Explorer 9.

Usage

For immediate usage, add this script to your document:

`html

`

For Node usage, add [Array Flat Polyfill] to your project:

`sh
npm install array-flat-polyfill
`

Include [Array Flat Polyfill] in your JS:

`js
import 'array-flat-polyfill';
``

[cli-img]: https://img.shields.io/travis/jonathantneal/array-flat-polyfill/master.svg
[cli-url]: https://travis-ci.org/jonathantneal/array-flat-polyfill
[git-img]: https://img.shields.io/badge/support-chat-blue.svg
[git-url]: https://gitter.im/postcss/postcss
[npm-img]: https://img.shields.io/npm/v/array-flat-polyfill.svg
[npm-url]: https://www.npmjs.com/package/array-flat-polyfill

[Array Flat Polyfill]: https://github.com/jonathantneal/array-flat-polyfill
[TC39 Proposal]: https://tc39.github.io/proposal-flatMap/#sec-Array.prototype.flat