recursivelyTraverseReappearLayoutEffects() — react Function Reference

Source Code

packages/react-reconciler/src/ReactFiberCommitWork.js lines 3332–3356

function recursivelyTraverseReappearLayoutEffects(
  finishedRoot: FiberRoot,
  parentFiber: Fiber,
  includeWorkInProgressEffects: boolean,
) {
  // This function visits both newly finished work and nodes that were re-used
  // from a previously committed tree. We cannot check non-static flags if the
  // node was reused.
  const childShouldIncludeWorkInProgressEffects =
    includeWorkInProgressEffects &&
    (parentFiber.subtreeFlags & LayoutMask) !== NoFlags;

  // TODO (Offscreen) Check: flags & (RefStatic | LayoutStatic)
  let child = parentFiber.child;
  while (child !== null) {
    const current = child.alternate;
    reappearLayoutEffects(
      finishedRoot,
      current,
      child,
      childShouldIncludeWorkInProgressEffects,
    );
    child = child.sibling;
  }
}