1 | import { MemoCache } from '@naturalcycles/js-lib'
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2 | import * as LRUCache from 'lru-cache'
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3 |
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4 |
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5 | export type LRUMemoCacheOptions<KEY, VALUE> = Partial<LRUCache.Options<KEY, VALUE>>
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6 |
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7 |
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8 |
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9 |
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10 |
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11 |
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12 |
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13 |
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14 | export class LRUMemoCache<KEY = any, VALUE = any> implements MemoCache<KEY, VALUE> {
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15 | constructor(opt: LRUMemoCacheOptions<KEY, VALUE>) {
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16 | this.lru = new LRUCache<KEY, VALUE>({
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17 | max: 100,
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18 | ...opt,
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19 | })
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20 | }
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21 |
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22 | private lru!: LRUCache<KEY, VALUE>
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23 |
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24 | has(k: any): boolean {
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25 | return this.lru.has(k)
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26 | }
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27 |
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28 | get(k: any): any {
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29 | return this.lru.get(k)
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30 | }
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31 |
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32 | set(k: any, v: any): void {
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33 | this.lru.set(k, v)
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34 | }
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35 |
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36 | clear(): void {
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37 | this.lru.clear()
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38 | }
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39 | }
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