Javascript类不是构造函数

我有一个状态机，在那里我进行从一个状态到另一个状态的转换。（例如ReserveState->StartState）

在这个特殊情况下，我有一个从ReserveFailedVMState到ReserveVMState的转换

ReserveFailedVMState的代码：

const { AbstractVMCtrlState } = require("./AbstractVMCtrlState");
const { ReserveVMState } = require("./ReserveVMState");
const { TerminateDuringReservationState } = require("./TerminateDuringReservationState");
const { ResourceUnavailableState } = require("./ResourceUnavailableState");

//>>>> don't change the CUSTOM CODE comments, if you do generation will overwrite your code >>>>
//###START_CUSTOMCODE1
const { Config } = require("../config/Config");
const { Tasker } = require("../libs/tasker/src/Tasker");
//###END_CUSTOMCODE1
class ReserveVMFailedState extends AbstractVMCtrlState {
  //>>>> don't change the CUSTOM CODE comments, if you do generation will overwrite your code >>>>
  //###START_CUSTOMCODE2
  async onEnterState() {
    //TODO: try to remove the reservation, if exists
    this.logMsg("Could not reserve a VM");
    const config = Config.getConfig();
    if (this.SM.getQueueReservationRetries() <= config.queueReservation.requeueReservationMaxRetries) {
      this.logMsg("Retrying queue for Starting a Reservation, attempt # " + this.SM.getQueueReservationRetries());
      this.SM.setIncreaseQueueReservationRetries();
      await this.retryReserveVMCloudTask();
    } else {
      this.logMsg("After maxRetries, reservation could not be done");
      await this.SM.resourceUnavailable();
    }
  }

  // kicking off a cloud task for retrying to reserve a VM
  async retryReserveVMCloudTask() {
    const run_id = this.getRunId();
    const tasker = new Tasker();
    const vmStartTaskId = await tasker.sendRetryReserveVM(run_id);
    this.SM.setVmStartTaskId(vmStartTaskId);
  }
  //###END_CUSTOMCODE2

  constructor() {
    super();
  }

  async onExitState() {}

  reserveVM() {
    this.logMsg("holaaaaa");
    return new ReserveVMState();
  }

  terminateRequested() {
    return new TerminateDuringReservationState();
  }

  resourceUnavailable() {
    return new ResourceUnavailableState();
  }
}

const serialijse = require("serialijse");
serialijse.declarePersistable(ReserveVMFailedState);

module.exports = { ReserveVMFailedState };

我实现了一个记录器，当我尝试此转换时，会出现以下错误：

[OSM]5f64cae6df60d0c4734aa87b-OSM异常：类型错误：ReserveVMState不是构造函数

我尝试过不同的方法，但似乎都不管用，我在这里遗漏了什么

---

提前感谢console.log上的提示，我意识到我的ReserveVMState未定义，这有点奇怪。在进行调查之后，问题是由于NodeJs“require”引起的，我使用此链接作为帮助，我的最终解决方案是将ReserveVMFailedState上的“require”更改为此

const { ReserveVMState } = requireUncached("./ReserveVMState");

---

上面的链接上提供了requireUncached函数。

如果您

console.log（ReserveVMState）

，会发生什么情况？在我的ReserveVMFailedState类上，它是未定义的！，有趣的是，我在前面的转换中使用了相同的引用，console.log throws是一个函数。[函数：ReserveVMState]

const { ReserveVMState } = requireUncached("./ReserveVMState");