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josenaves/flattenArray.js

Created November 29, 2017 16:59
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Flatten an array (ES6)
Raw
flattenArray.js
const arr = [[1,2,[3]],4];
const flattenArray = list =>
list.reduce(
(a, b) => a.concat(Array.isArray(b) ? flattenArray(b) : b), []
);
console.log(flattenArray(arr));
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