Function getContainerFromFiber

lib/assets/react-source/development/react.js:6609–6611

(fiber)

	  return null;
	}
	function getContainerFromFiber(fiber) {
	  return fiber.tag === HostRoot ? fiber.stateNode.containerInfo : null;
	}
	function isFiberMounted(fiber) {
	  return getNearestMountedFiber(fiber) === fiber;
	}