flat

Flattens nested iterable to given depth. [:running:] [:vhs:] [:package:] [:moon:]

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

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

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

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

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

references

• Array.prototype.flat(): MDN web docs
• _.flatten(): lodash [:running:]: https://npm.runkit.com/@extra-iterable/flat [:vhs:]: https://asciinema.org/a/BjrrSTyTvTgRnpZaPtJENA4VO [:package:]: https://www.npmjs.com/package/@extra-iterable/flat [:moon:]: https://www.npmjs.com/package/@extra-iterable/flat.min