Function createUpdate

docs/external/js/react-dom.development.js:12310–12326

(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;