Method fetchWithCache

web/src/artifact_cache.ts:367–375

* fetch the corresponding url object in response or stored object format * @param url url * @param storetype the storage type for indexedDB * @param signal an optional abort signal to abort fetching * @returns response in json, arraybuffer or pure response format

(url: string, storetype?: string, signal?: AbortSignal)

   * @returns response in json, arraybuffer or pure response format
   */
  async fetchWithCache(url: string, storetype?: string, signal?: AbortSignal): Promise<any> {
    await this.addToCache(url, storetype, signal);
    const result = await this.cache.match(new Request(url));
    if (result === undefined) {
      // Already called `addToCache()`, should expect the request in cache.
      throw Error("Cannot fetch " + url);
    }
    return await this.responseTostoretype(result, storetype);
  }

  async addToCache(url: string, storetype?: string, signal?: AbortSignal) {
    const request = new Request(url, signal ? { signal } : undefined);