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Citrusbyte.com - flatten array
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| function flatten (a) { | |
| return [].concat( ...a.map(x => Array.isArray(x) ? flatten(x) : x) ) | |
| } | |
| flatten([1, 2, [3, 4, [5], 6, [7, [8]]]]) | |
| // [ 1, 2, 3, 4, 5, 6, 7, 8 ] |
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