| // Stack grow safe implementation |
| |
| "use strict"; |
| |
| var ensureValue = require("../../object/valid-value") |
| , isArray = Array.isArray |
| , objHasOwnProperty = Object.prototype.hasOwnProperty; |
| |
| module.exports = function () { |
| var input = ensureValue(this), index = 0, remaining, remainingIndexes, length, i, result = []; |
| // Jslint: ignore |
| main: while (input) { |
| length = input.length; |
| for (i = index; i < length; ++i) { |
| if (!objHasOwnProperty.call(input, i)) continue; |
| if (isArray(input[i])) { |
| if (i < length - 1) { |
| // eslint-disable-next-line max-depth |
| if (!remaining) { |
| remaining = []; |
| remainingIndexes = []; |
| } |
| remaining.push(input); |
| remainingIndexes.push(i + 1); |
| } |
| input = input[i]; |
| index = 0; |
| continue main; |
| } |
| result.push(input[i]); |
| } |
| if (remaining) { |
| input = remaining.pop(); |
| index = remainingIndexes.pop(); |
| } else { |
| input = null; |
| } |
| } |
| return result; |
| }; |
