Class RequestIdleCallbackService

packages/core/src/defer/idle_service.ts:83–94

* Default implementation of `IDLE_SERVICE` which uses `requestIdleCallback` when available or * `setTimeout` when not.

 * `setTimeout` when not.
 */
class RequestIdleCallbackService implements IdleService {
  private readonly requestIdleCallback = _requestIdleCallback();
  private readonly cancelIdleCallback = _cancelIdleCallback();

  requestOnIdle(callback: (deadline?: IdleDeadline) => void, options?: IdleRequestOptions): number {
    return this.requestIdleCallback(callback, options);
  }

  cancelOnIdle(id: number): void {
    return this.cancelIdleCallback(id);
  }
}