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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 | 2x 2x 14x 15x 19x 19x 9x 10x 10x 5x 5x 8x 8x | import { ICache, Cacheable, CACHE_KEY_PREFIX, getKeyWithPrefix, removePrefixFromKey } from './shared'
/**
* Implementation of caching that uses local storage
* */
export class LocalStorageCache implements ICache {
constructor(public prefix: string = CACHE_KEY_PREFIX) {}
public set<T = Cacheable>(key: string, entry: T) {
window.localStorage.setItem(getKeyWithPrefix(key, this.prefix), JSON.stringify(entry))
}
public get<T = Cacheable>(key: string) {
const json = window.localStorage.getItem(getKeyWithPrefix(key, this.prefix))
if (!json) {
return
}
try {
return JSON.parse(json) as T
} catch (e) {
return
}
}
public remove(key: string) {
window.localStorage.removeItem(getKeyWithPrefix(key, this.prefix))
}
public allKeys() {
return Object.keys(window.localStorage)
.filter((key) => key.startsWith(this.prefix))
.map((key) => removePrefixFromKey(key, this.prefix))
}
}
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