Function finishQueueingConcurrentUpdates

docs/index.js:5855–5879

()

  concurrentQueuesIndex = 0,
  concurrentlyUpdatedLanes = 0;
function finishQueueingConcurrentUpdates() {
  for (
    var endIndex = concurrentQueuesIndex,
      i = (concurrentlyUpdatedLanes = concurrentQueuesIndex = 0);
    i < endIndex;

  ) {
    var fiber = concurrentQueues[i];
    concurrentQueues[i++] = null;
    var queue = concurrentQueues[i];
    concurrentQueues[i++] = null;
    var update = concurrentQueues[i];
    concurrentQueues[i++] = null;
    var lane = concurrentQueues[i];
    concurrentQueues[i++] = null;
    if (null !== queue && null !== update) {
      var pending = queue.pending;
      null === pending
        ? (update.next = update)
        : ((update.next = pending.next), (pending.next = update));
      queue.pending = update;
    }
    0 !== lane && markUpdateLaneFromFiberToRoot(fiber, update, lane);
  }
}
function enqueueUpdate$1(fiber, queue, update, lane) {
  concurrentQueues[concurrentQueuesIndex++] = fiber;
  concurrentQueues[concurrentQueuesIndex++] = queue;