Function performWork

code/composition/public/app.js:13870–13912

(minExpirationTime, isAsync, dl)

  }

  function performWork(minExpirationTime, isAsync, dl) {
    deadline = dl;

    // Keep working on roots until there's no more work, or until the we reach
    // the deadline.
    findHighestPriorityRoot();

    if (enableUserTimingAPI && deadline !== null) {
      var didExpire = nextFlushedExpirationTime < recalculateCurrentTime();
      stopRequestCallbackTimer(didExpire);
    }

    if (isAsync) {
      while (nextFlushedRoot !== null && nextFlushedExpirationTime !== NoWork && (minExpirationTime === NoWork || minExpirationTime >= nextFlushedExpirationTime) && (!deadlineDidExpire || recalculateCurrentTime() >= nextFlushedExpirationTime)) {
        performWorkOnRoot(nextFlushedRoot, nextFlushedExpirationTime, !deadlineDidExpire);
        findHighestPriorityRoot();
      }
    } else {
      while (nextFlushedRoot !== null && nextFlushedExpirationTime !== NoWork && (minExpirationTime === NoWork || minExpirationTime >= nextFlushedExpirationTime)) {
        performWorkOnRoot(nextFlushedRoot, nextFlushedExpirationTime, false);
        findHighestPriorityRoot();
      }
    }

    // We're done flushing work. Either we ran out of time in this callback,
    // or there's no more work left with sufficient priority.

    // If we're inside a callback, set this to false since we just completed it.
    if (deadline !== null) {
      callbackExpirationTime = NoWork;
      callbackID = -1;
    }
    // If there's work left over, schedule a new callback.
    if (nextFlushedExpirationTime !== NoWork) {
      scheduleCallbackWithExpiration(nextFlushedExpirationTime);
    }

    // Clean-up.
    deadline = null;
    deadlineDidExpire = false;

    finishRendering();
  }

  function flushRoot(root, expirationTime) {
    !!isRendering ? invariant(false, 'work.commit(): Cannot commit while already rendering. This likely means you attempted to commit from inside a lifecycle method.') : void 0;