Function entangleTransitions

dash/deps/react-dom@18.2.0.js:13538–13564

(root, fiber, lane)

    }
  }
  function entangleTransitions(root, fiber, lane) {
    var updateQueue = fiber.updateQueue;

    if (updateQueue === null) {
      // Only occurs if the fiber has been unmounted.
      return;
    }

    var sharedQueue = updateQueue.shared;

    if (isTransitionLane(lane)) {
      var queueLanes = sharedQueue.lanes; // If any entangled lanes are no longer pending on the root, then they must
      // have finished. We can remove them from the shared queue, which represents
      // a superset of the actually pending lanes. In some cases we may entangle
      // more than we need to, but that's OK. In fact it's worse if we *don't*
      // entangle when we should.

      queueLanes = intersectLanes(queueLanes, root.pendingLanes); // Entangle the new transition lane with the other transition lanes.

      var newQueueLanes = mergeLanes(queueLanes, lane);
      sharedQueue.lanes = newQueueLanes; // Even if queue.lanes already include lane, we don't know for certain if
      // the lane finished since the last time we entangled it. So we need to
      // entangle it again, just to be sure.

      markRootEntangled(root, newQueueLanes);
    }
  }
  function enqueueCapturedUpdate(workInProgress, capturedUpdate) {
    // Captured updates are updates that are thrown by a child during the render
    // phase. They should be discarded if the render is aborted. Therefore,