Function pushContextProvider

lib/assets/react-source/development/react.js:14536–14550

(workInProgress)

	}

	function pushContextProvider(workInProgress) {
	  {
	    var instance = workInProgress.stateNode; // We push the context as early as possible to ensure stack integrity.
	    // If the instance does not exist yet, we will push null at first,
	    // and replace it on the stack later when invalidating the context.

	    var memoizedMergedChildContext = instance && instance.__reactInternalMemoizedMergedChildContext || emptyContextObject; // Remember the parent context so we can merge with it later.
	    // Inherit the parent's did-perform-work value to avoid inadvertently blocking updates.

	    previousContext = contextStackCursor.current;
	    push(contextStackCursor, memoizedMergedChildContext, workInProgress);
	    push(didPerformWorkStackCursor, didPerformWorkStackCursor.current, workInProgress);
	    return true;
	  }
	}

	function invalidateContextProvider(workInProgress, type, didChange) {
	  {