| 1 | export default function uniqueBy(arr, fn) {
|
| 2 | var identifiers = new Set();
|
| 3 | return arr.filter(function (item) {
|
| 4 | var identifier = fn(item);
|
| 5 |
|
| 6 | if (!identifiers.has(identifier)) {
|
| 7 | identifiers.add(identifier);
|
| 8 | return true;
|
| 9 | }
|
| 10 | });
|
| 11 | } |
| \ | No newline at end of file |