Function startProfilerTimer

docs/index.js:22651–22654

(fiber)

      return elapsedTime;
    }
    function startProfilerTimer(fiber) {
      profilerStartTime = now();
      0 > fiber.actualStartTime && (fiber.actualStartTime = profilerStartTime);
    }
    function stopProfilerTimerIfRunningAndRecordDuration(fiber) {
      if (0 <= profilerStartTime) {
        var elapsedTime = now() - profilerStartTime;