Function constructor

packages/service-worker/worker/src/assets.ts:57–84

(
    protected scope: ServiceWorkerGlobalScope,
    protected adapter: Adapter,
    protected idle: IdleScheduler,
    protected config: AssetGroupConfig,
    protected hashes: Map<string, string>,
    protected db: Database,
    cacheNamePrefix: string,
  )

  protected metadata: Promise<Table>;

  constructor(
    protected scope: ServiceWorkerGlobalScope,
    protected adapter: Adapter,
    protected idle: IdleScheduler,
    protected config: AssetGroupConfig,
    protected hashes: Map<string, string>,
    protected db: Database,
    cacheNamePrefix: string,
  ) {
    this.name = config.name;

    // Normalize the config's URLs to take the ServiceWorker's scope into account.
    this.urls = config.urls.map((url) => adapter.normalizeUrl(url));

    // Patterns in the config are regular expressions disguised as strings. Breathe life into them.
    this.patterns = config.patterns.map((pattern) => new RegExp(pattern));

    // This is the primary cache, which holds all of the cached requests for this group. If a
    // resource isn't in this cache, it hasn't been fetched yet.
    this.cache = adapter.caches.open(`${cacheNamePrefix}:${config.name}:cache`);

    // This is the metadata table, which holds specific information for each cached URL, such as
    // the timestamp of when it was added to the cache.
    this.metadata = this.db.open(
      `${cacheNamePrefix}:${config.name}:meta`,
      config.cacheQueryOptions,
    );
  }

  async cacheStatus(url: string): Promise<UpdateCacheStatus> {
    const cache = await this.cache;