Function assertIsMounted

lib/assets/react-source/development/react.js:6640–6646

(fiber)

	}

	function assertIsMounted(fiber) {
	  if (!(getNearestMountedFiber(fiber) === fiber)) {
	    {
	      throw Error( "Unable to find node on an unmounted component." );
	    }
	  }
	}

	function findCurrentFiberUsingSlowPath(fiber) {
	  var alternate = fiber.alternate;