1 |
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2 |
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3 | import { isUndefined } from "./is/undefined.js";
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4 | import { stringify } from "./stringify.js";
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5 |
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6 | function defaultGetId() {
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7 | return 'none';
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8 | }
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9 |
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10 |
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11 | export function memoize(fn, {
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12 | getInstanceId = defaultGetId
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13 | } = {}) {
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14 | const cache = {};
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15 |
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16 | const memoized = (...args) => {
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17 | const stringParams = stringify(args);
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18 | const instanceId = getInstanceId();
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19 |
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20 | if (!cache[instanceId]) {
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21 | cache[instanceId] = {};
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22 | }
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23 |
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24 | if (isUndefined(cache[instanceId][stringParams])) {
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25 | cache[instanceId][stringParams] = fn(...args);
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26 | }
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27 |
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28 | return cache[instanceId][stringParams];
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29 | };
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30 |
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31 | memoized.unmemoize = (...args) => {
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32 | const stringParams = stringify(args);
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33 | const instanceId = getInstanceId();
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34 |
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35 | if (cache[instanceId] && !isUndefined(cache[instanceId][stringParams])) {
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36 | delete cache[instanceId][stringParams];
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37 | }
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38 | };
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39 |
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40 | return memoized;
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41 | } |
\ | No newline at end of file |