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Flatten an array of nested arrays
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| /* | |
| * This function returns a flat array given an array of arbitrarily nested arrays | |
| * e.g. [[1,2,[3]],4] -> [1,2,3,4]. | |
| */ | |
| const flattenArray = arr => { | |
| const result = [] | |
| arr.map(item => { | |
| if (Array.isArray(item)) { | |
| result.push(...flattenArray(item)) | |
| } else { | |
| result.push(item) | |
| } | |
| }) | |
| return result | |
| } |
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