Function waitForServices

src/render-delaying-services.js:62–82

(win)

 *     as the detected render delaying services
 */
export function waitForServices(win) {
  const promises = includedServices(win).map((serviceId) => {
    const serviceReadyPromise = getServicePromise(win, serviceId).then(
      (service) => {
        if (service && isRenderDelayingService(service)) {
          return service.whenReady().then(() => {
            return service;
          });
        }
        return service;
      }
    );

    return Services.timerFor(win).timeoutPromise(
      LOAD_TIMEOUT,
      serviceReadyPromise,
      `Render timeout waiting for service ${serviceId} to be ready.`
    );
  });
  return Promise.all(promises);
}

/**
 * Returns true if the page has a render delaying service.