commitActivityHydrationCallbacks() — react Function Reference

Source Code

packages/react-reconciler/src/ReactFiberCommitWork.js lines 1831–1863

function commitActivityHydrationCallbacks(
  finishedRoot: FiberRoot,
  finishedWork: Fiber,
) {
  if (!supportsHydration) {
    return;
  }
  const newState: ActivityState | null = finishedWork.memoizedState;
  if (newState === null) {
    const current = finishedWork.alternate;
    if (current !== null) {
      const prevState: ActivityState | null = current.memoizedState;
      if (prevState !== null) {
        const activityInstance = prevState.dehydrated;
        commitHostHydratedActivity(activityInstance, finishedWork);
        if (enableSuspenseCallback) {
          try {
            // TODO: Delete this feature. It's not properly covered by DEV features.
            const hydrationCallbacks = finishedRoot.hydrationCallbacks;
            if (hydrationCallbacks !== null) {
              const onHydrated = hydrationCallbacks.onHydrated;
              if (onHydrated) {
                onHydrated(activityInstance);
              }
            }
          } catch (error) {
            captureCommitPhaseError(finishedWork, finishedWork.return, error);
          }
        }
      }
    }
  }
}