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browserCache.ts
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browserCache.ts
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/**
* Browser cache implementation
*/
import type { CacheHandlers, CacheOptions, Milliseconds } from "./types";
import { isValidKey, makeKey, makeResponse } from "./utils";
export class BrowserCache<T> implements CacheHandlers<T> {
private ns: string;
public type = "browser";
constructor(opt?: CacheOptions) {
this.ns = opt?.namespace || "keyv-cache";
}
private get caches() {
return window.caches;
}
async set(key: string, value: T, ttl: Milliseconds) {
const cache = await this.caches.open(this.ns);
await cache.put(makeKey(key, this.ns), makeResponse(value, ttl));
return "OK";
}
async get(key: string) {
const formattedKey = makeKey(key, this.ns);
const cache = await this.caches.open(this.ns);
const keyRes = await cache.match(formattedKey);
if (!keyRes?.ok || !isValidKey(keyRes)) {
await this.remove(formattedKey);
return null;
}
return keyRes.clone().json();
}
async has(key: string) {
const data = await this.get(key);
return data != null;
}
async remove(key: string) {
const cache = await this.caches.open(this.ns);
return cache.delete(makeKey(key, this.ns));
}
async removePattern(pattern: string) {
const cache = await this.caches.open(this.ns);
const keys = await cache.keys();
const keysToDelete = keys.filter((k) => k.url.includes(pattern));
return Promise.all(keysToDelete.map((k) => cache.delete(k)));
}
async keys() {
const cache = await this.caches.open(this.ns);
return cache.keys().then((keys) => keys.map((k) => k.url));
}
clear() {
return this.caches.delete(this.ns);
}
}