updateSuspensePrimaryChildren() — react Function Reference

Source Code

packages/react-reconciler/src/ReactFiberBeginWork.js lines 2715–2750

function updateSuspensePrimaryChildren(
  current: Fiber,
  workInProgress: Fiber,
  primaryChildren: $FlowFixMe,
  renderLanes: Lanes,
) {
  const currentPrimaryChildFragment: Fiber = (current.child: any);
  const currentFallbackChildFragment: Fiber | null =
    currentPrimaryChildFragment.sibling;

  const primaryChildFragment = updateWorkInProgressOffscreenFiber(
    currentPrimaryChildFragment,
    {
      mode: 'visible',
      children: primaryChildren,
    },
  );
  if (!disableLegacyMode && (workInProgress.mode & ConcurrentMode) === NoMode) {
    primaryChildFragment.lanes = renderLanes;
  }
  primaryChildFragment.return = workInProgress;
  primaryChildFragment.sibling = null;
  if (currentFallbackChildFragment !== null) {
    // Delete the fallback child fragment
    const deletions = workInProgress.deletions;
    if (deletions === null) {
      workInProgress.deletions = [currentFallbackChildFragment];
      workInProgress.flags |= ChildDeletion;
    } else {
      deletions.push(currentFallbackChildFragment);
    }
  }

  workInProgress.child = primaryChildFragment;
  return primaryChildFragment;
}