Function createUpdate

lib/assets/react-source/development/react.js:15870–15886

(expirationTime, suspenseConfig)

	  }
	}
	function createUpdate(expirationTime, suspenseConfig) {
	  var update = {
	    expirationTime: expirationTime,
	    suspenseConfig: suspenseConfig,
	    tag: UpdateState,
	    payload: null,
	    callback: null,
	    next: null
	  };
	  update.next = update;

	  {
	    update.priority = getCurrentPriorityLevel();
	  }

	  return update;
	}
	function enqueueUpdate(fiber, update) {
	  var updateQueue = fiber.updateQueue;