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23 lines
553 B
23 lines
553 B
2 years ago
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'use strict';
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module.exports = function (items, comparator) {
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comparator = comparator
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? comparator
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: (a, b) => {
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if (a < b) return -1;
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if (a > b) return 1;
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return 0;
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};
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let stabilizedItems = items.map((el, index) => [el, index]);
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const stableComparator = (a, b) => {
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let order = comparator(a[0], b[0]);
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if (order != 0) return order;
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return a[1] - b[1];
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};
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stabilizedItems.sort(stableComparator);
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for (let i = 0; i < items.length; i++) {
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items[i] = stabilizedItems[i][0];
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}
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return items;
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};
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