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KhanMaytok/flatten.js

Forked from the-creature/flatten.js
Created February 1, 2017 04:32
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es6 flat array
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flatten.js
const flatten = arr => arr.reduce(
(a, b) => a.concat(Array.isArray(b) ? flatten(b) : b), []
);
testArr = [[1,2,[3]],4]
console.log(flatten(testArr));
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