trackEnterViewTransitions() — react Function Reference

Source Code

packages/react-reconciler/src/ReactFiberCommitViewTransitions.js lines 76–88

export function trackEnterViewTransitions(placement: Fiber): void {
  if (
    placement.tag === ViewTransitionComponent ||
    (placement.subtreeFlags & ViewTransitionStatic) !== NoFlags
  ) {
    // If an inserted or appearing Fiber is a ViewTransition component or has one as
    // an immediate child, then that will trigger as an "Enter" in future passes.
    // We don't do anything else for that case in the "before mutation" phase but we
    // still have to mark it as needing to call startViewTransition if nothing else
    // updates.
    shouldStartViewTransition = true;
  }
}