Function bubbleNestedEffectDurations

docs/index.js:22646–22650

(prevEffectDuration)

      return elapsedTime;
    }
    function bubbleNestedEffectDurations(prevEffectDuration) {
      var elapsedTime = profilerEffectDuration;
      profilerEffectDuration += prevEffectDuration;
      return elapsedTime;
    }
    function startProfilerTimer(fiber) {
      profilerStartTime = now();
      0 > fiber.actualStartTime && (fiber.actualStartTime = profilerStartTime);