14 lines
308 B
JavaScript
14 lines
308 B
JavaScript
function uniqBy(arr, mapper) {
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const map = new Map();
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for (let i = 0; i < arr.length; i++) {
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const item = arr[i];
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const key = mapper(item, i, arr);
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if (!map.has(key)) {
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map.set(key, item);
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}
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}
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return Array.from(map.values());
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}
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export { uniqBy };
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