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array-flat-polyfill
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A polyfill for Array.prototype.flat and Array.prototype.flatMap
Array Flat Polyfill is a polyfill for Array.prototype.flat
and
Array.prototype.flatMap
, following the TC39 Proposal.
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.
[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.
[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.
For immediate usage, add this script to your document:
<script src="https://unpkg.com/array-flat-polyfill"></script>
For Node usage, add Array Flat Polyfill to your project:
npm install array-flat-polyfill
Include Array Flat Polyfill in your JS:
import 'array-flat-polyfill';
1.0.1 (April 12, 2019)
FAQs
A polyfill for Array.prototype.flat and Array.prototype.flatMap
The npm package array-flat-polyfill receives a total of 214,125 weekly downloads. As such, array-flat-polyfill popularity was classified as popular.
We found that array-flat-polyfill demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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