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Last change
on this file since 8d391a1 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
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initial commit
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-
Property mode
set to
100644
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File size:
515 bytes
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| 1 | module.exports = function flatten(list, depth) {
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| 2 | depth = (typeof depth == 'number') ? depth : Infinity;
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| 3 |
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| 4 | if (!depth) {
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| 5 | if (Array.isArray(list)) {
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| 6 | return list.map(function(i) { return i; });
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| 7 | }
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| 8 | return list;
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| 9 | }
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| 10 |
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| 11 | return _flatten(list, 1);
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| 12 |
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| 13 | function _flatten(list, d) {
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| 14 | return list.reduce(function (acc, item) {
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| 15 | if (Array.isArray(item) && d < depth) {
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| 16 | return acc.concat(_flatten(item, d + 1));
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| 17 | }
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| 18 | else {
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| 19 | return acc.concat(item);
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| 20 | }
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| 21 | }, []);
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| 22 | }
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| 23 | };
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