flat

Flattens nested array to given depth. 🏃 📼 📦 🌔 📒

array.flat(x, [dep]);
// x:   a nested array
// dep: maximum depth (-1)

const array = require('extra-array');

var x = [[1, 2], [3, [4, [5]]]];
array.flat(x);
// [ 1, 2, 3, 4, 5 ]

array.flat(x, 1);
// [ 1, 2, 3, [ 4, [ 5 ] ] ]

array.flat(x, 2);
// [ 1, 2, 3, 4, [ 5 ] ]

references

• Array.prototype.flat: MDN web docs
• _.flatten: lodash