hideOrUnhideNearestPortalsOnFiber() — react Function Reference

Source Code

packages/react-reconciler/src/ReactFiberCommitWork.js lines 1257–1282

function hideOrUnhideNearestPortalsOnFiber(fiber: Fiber, isHidden: boolean) {
  if (!supportsMutation) {
    return;
  }
  switch (fiber.tag) {
    case HostPortal: {
      // Found a portal. Switch back to the normal hide/unhide algorithm to
      // toggle the visibility of its children.
      hideOrUnhideAllChildrenOnFiber(fiber, isHidden);
      return;
    }
    case OffscreenComponent: {
      const offscreenState: OffscreenState | null = fiber.memoizedState;
      if (offscreenState !== null) {
        // Found a nested Offscreen component that is hidden. Don't search any
        // deeper. This tree should remain hidden.
      } else {
        hideOrUnhideNearestPortals(fiber, isHidden);
      }
      return;
    }
    default: {
      hideOrUnhideNearestPortals(fiber, isHidden);
      return;
    }
  }