Method setupUpdate

packages/service-worker/worker/src/driver.ts:1008–1051

(manifest: Manifest, hash: string)

  }

  private async setupUpdate(manifest: Manifest, hash: string): Promise<void> {
    try {
      const newVersion = new AppVersion(
        this.scope,
        this.adapter,
        this.db,
        this.idle,
        this.debugger,
        manifest,
        hash,
      );

      // Firstly, check if the manifest version is correct.
      if (manifest.configVersion !== SUPPORTED_CONFIG_VERSION) {
        await this.deleteAllCaches();
        await this.scope.registration.unregister();
        throw new Error(
          `Invalid config version: expected ${SUPPORTED_CONFIG_VERSION}, got ${manifest.configVersion}.`,
        );
      }

      // Cause the new version to become fully initialized. If this fails, then the
      // version will not be available for use.
      await newVersion.initializeFully(this);

      // Install this as an active version of the app.
      this.versions.set(hash, newVersion);
      // Future new clients will use this hash as the latest version.
      this.latestHash = hash;

      // If we are in `EXISTING_CLIENTS_ONLY` mode (meaning we didn't have a clean copy of the last
      // latest version), we can now recover to `NORMAL` mode and start accepting new clients.
      if (this.state === DriverReadyState.EXISTING_CLIENTS_ONLY) {
        this.state = DriverReadyState.NORMAL;
        this.stateMessage = '(nominal)';
      }

      await this.sync();
      await this.notifyClientsAboutVersionReady(manifest, hash);
    } catch (e) {
      await this.notifyClientsAboutVersionInstallationFailed(manifest, hash, e);
      throw e;
    }
  }

  async checkForUpdate(): Promise<boolean> {
    let hash: string = '(unknown)';