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| if(!Array.prototype.isArray){ | |
| Array.prototype.isArray = function (variable) { | |
| return variable.constructor === Array; | |
| } | |
| } | |
| function flatten(arr, result) { | |
| result = result || []; | |
| for (let i = 0, length = arr.length; i < length; i++) { | |
| var value = arr[i]; | |
| if (Array.isArray(value)) { | |
| for (var j = 0, length2 = value.length; j < length2; j++) { | |
| var value2 = value[j]; | |
| if (Array.isArray(value2)) { | |
| flatten(value2, result) | |
| } else { | |
| result.push(value2) | |
| } | |
| } | |
| } else { | |
| result.push(value) | |
| } | |
| } | |
| return result | |
| } |
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