Method promise

src/service/timer-impl.js:105–113

* Returns a promise that will resolve after the delay. Optionally, the * resolved value can be provided as opt_result argument. * @param {number=} opt_delay * @return {!Promise}

(opt_delay)

   * @return {!Promise}
   */
  promise(opt_delay) {
    return new this.win.Promise((resolve) => {
      // Avoid wrapping in closure if no specific result is produced.
      const timerKey = this.delay(resolve, opt_delay);
      if (timerKey == -1) {
        throw new Error('Failed to schedule timer.');
      }
    });
  }

  /**
   * Returns a promise that will fail after the specified delay. Optionally,