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