Function pushHiddenContext

packages/react-reconciler/src/ReactFiberHiddenContext.js:38–50

(fiber: Fiber, context: HiddenContext)

  createCursor(NoLanes);

export function pushHiddenContext(fiber: Fiber, context: HiddenContext): void {
  const prevEntangledRenderLanes = getEntangledRenderLanes();
  push(prevEntangledRenderLanesCursor, prevEntangledRenderLanes, fiber);
  push(currentTreeHiddenStackCursor, context, fiber);

  // When rendering a subtree that's currently hidden, we must include all
  // lanes that would have rendered if the hidden subtree hadn't been deferred.
  // That is, in order to reveal content from hidden -> visible, we must commit
  // all the updates that we skipped when we originally hid the tree.
  setEntangledRenderLanes(
    mergeLanes(prevEntangledRenderLanes, context.baseLanes),
  );
}

export function reuseHiddenContextOnStack(fiber: Fiber): void {
  // This subtree is not currently hidden, so we don't need to add any lanes