Function pushHostContext

packages/react-reconciler/src/ReactFiberHostContext.js:92–110

(fiber: Fiber)

}

function pushHostContext(fiber: Fiber): void {
  const stateHook: Hook | null = fiber.memoizedState;
  if (stateHook !== null) {
    // Only provide context if this fiber has been upgraded by a host
    // transition. We use the same optimization for regular host context below.
    push(hostTransitionProviderCursor, fiber, fiber);
  }

  const context: HostContext = requiredContext(contextStackCursor.current);
  const nextContext = getChildHostContext(context, fiber.type);

  // Don't push this Fiber's context unless it's unique.
  if (context !== nextContext) {
    // Track the context and the Fiber that provided it.
    // This enables us to pop only Fibers that provide unique contexts.
    push(contextFiberStackCursor, fiber, fiber);
    push(contextStackCursor, nextContext, fiber);
  }
}

function popHostContext(fiber: Fiber): void {
  if (contextFiberStackCursor.current === fiber) {