Function obsToSinglePromise

packages/service-worker/test/integration_spec.ts:37–39

(obs: Observable<T>)

  const distUpdate = new MockFileSystemBuilder().addFile('/only.txt', 'this is only v2').build();

  function obsToSinglePromise<T>(obs: Observable<T>): Promise<T> {
    return obs.pipe(take(1)).toPromise() as Promise<T>;
  }

  const manifest: Manifest = {
    configVersion: 1,