Function clearTransitionsForLanes

packages/react-reconciler/src/ReactFiberLane.js:1251–1267

(root: FiberRoot, lanes: Lane | Lanes)

}

export function clearTransitionsForLanes(root: FiberRoot, lanes: Lane | Lanes) {
  if (!enableTransitionTracing) {
    return;
  }

  while (lanes > 0) {
    const index = laneToIndex(lanes);
    const lane = 1 << index;

    const transitions = root.transitionLanes[index];
    if (transitions !== null) {
      root.transitionLanes[index] = null;
    }

    lanes &= ~lane;
  }
}

// Used to name the Performance Track
export function getGroupNameOfHighestPriorityLane(lanes: Lanes): string {