Function markUpdateLaneFromFiberToRoot

dash/deps/react-dom@18.3.1.js:14508–14551

(sourceFiber, lane)

  var unsafe_markUpdateLaneFromFiberToRoot = markUpdateLaneFromFiberToRoot;

  function markUpdateLaneFromFiberToRoot(sourceFiber, lane) {
    // Update the source fiber's lanes
    sourceFiber.lanes = mergeLanes(sourceFiber.lanes, lane);
    var alternate = sourceFiber.alternate;

    if (alternate !== null) {
      alternate.lanes = mergeLanes(alternate.lanes, lane);
    }

    {
      if (alternate === null && (sourceFiber.flags & (Placement | Hydrating)) !== NoFlags) {
        warnAboutUpdateOnNotYetMountedFiberInDEV(sourceFiber);
      }
    } // Walk the parent path to the root and update the child lanes.


    var node = sourceFiber;
    var parent = sourceFiber.return;

    while (parent !== null) {
      parent.childLanes = mergeLanes(parent.childLanes, lane);
      alternate = parent.alternate;

      if (alternate !== null) {
        alternate.childLanes = mergeLanes(alternate.childLanes, lane);
      } else {
        {
          if ((parent.flags & (Placement | Hydrating)) !== NoFlags) {
            warnAboutUpdateOnNotYetMountedFiberInDEV(sourceFiber);
          }
        }
      }

      node = parent;
      parent = parent.return;
    }

    if (node.tag === HostRoot) {
      var root = node.stateNode;
      return root;
    } else {
      return null;
    }
  }

  var UpdateState = 0;
  var ReplaceState = 1;