https://github.com/facebook/react/blob/30b47103d4354d9187dc0f1fb804855a5208ca9f/packages/scheduler/src/Scheduler.js#L180-L185
Scheduler.unstable_advanceTime(100);
      });
      scheduleCallback(NormalPriority, () => {
        Scheduler.unstable_yieldValue('B');
        Scheduler.unstable_advanceTime(100);
      });
      scheduleCallback(NormalPriority, () => {
        Scheduler.unstable_yieldValue('C');
        Scheduler.unstable_advanceTime(100);
      });
      scheduleCallback(NormalPriority, () => {
        Scheduler.unstable_yieldValue('D');
        Scheduler.unstable_advanceTime(100);
      });
      
      
      expect(Scheduler).toFlushAndYield([
        'A',
        'Timer 1',
        'B',
        'C',
        'Timer 2',
        'D',
      ]);
    });
    it('interleaves delayed tasks with time-sliced tasks', () => {
      
      
      scheduleCallback(
        UserBlockingPriority,