Javascript RESTful API中的Typescript自定义错误

我有一个从另一个项目截取的代码，在RESTful API中有自定义错误。在我将其重构为typescript之前，这一切都很好。我不理解错误构造函数是如何工作的，这个范围内不知道这个.response

我如何抛出此错误

async function authenticate(request, response, next) {
    if(!request.body.email) {
        return next(new ErrorREST(Errors.BadRequest, "User name missing."));
    }
}

return next(new ErrorREST(Errors.Unauthorized));
return next(new ErrorREST(Errors.Unauthorized), "Authentication credentials not valid.");

error.js

const Errors = {
  BadRequest: {
    status: 400,
    message: "Request has wrong format."
  },
  Unauthorized: {
    status: 401,
    message: "Authentication credentials not valid."
  },
  Forbidden: {
    status: 403,
    message: "You're missing permission to execute this request."
  }
}

export class ErrorREST extends Error {
   public response: { status: number; message: string; detail: string };

    constructor(error: { status: number, message: string }, detail: string = undefined, ...args) {
       super(...args);
       this.response = {status: error.status, message: error.message, detail: detail};
   }
}

 this.express.use('/api/users', usersRouter);

 this.express.use(function (error, request, response, next) {

      logRequest(console.error, request);
      console.error("ERROR OCCURRED:");
      console.error(error);

   if (error == null || error.response == null) {//error is not a custom error
      error = new ErrorREST(Errors.InternalServerError);
   } 

   response.status(error.response.status).send(error.response);

const错误={
请求：{
现状：400，
消息：“请求的格式错误。”
},
未经授权：{
状况：401，
消息：“身份验证凭据无效。”
},
禁止：{
现状：403，
消息：“您缺少执行此请求的权限。”
}
}
类ErrorREST扩展了Error{
构造函数（类型，细节=未定义，…参数）{
超级（…args）；
如果（类型的类型！=='object'）{
返回新错误（“您需要提供错误类型”）；
}
这个。响应=类型；
如果（细节！==未定义）{
this.response.detail=细节；
}
}
}

JavaScript在调用时创建此.response。所以我创建了这个字段，TypeScript就知道了

第二个问题是，在错误处理之后，我在app.ts中定义了我的路由

错误。ts

const Errors = {
  BadRequest: {
    status: 400,
    message: "Request has wrong format."
  },
  Unauthorized: {
    status: 401,
    message: "Authentication credentials not valid."
  },
  Forbidden: {
    status: 403,
    message: "You're missing permission to execute this request."
  }
}

export class ErrorREST extends Error {
   public response: { status: number; message: string; detail: string };

    constructor(error: { status: number, message: string }, detail: string = undefined, ...args) {
       super(...args);
       this.response = {status: error.status, message: error.message, detail: detail};
   }
}

 this.express.use('/api/users', usersRouter);

 this.express.use(function (error, request, response, next) {

      logRequest(console.error, request);
      console.error("ERROR OCCURRED:");
      console.error(error);

   if (error == null || error.response == null) {//error is not a custom error
      error = new ErrorREST(Errors.InternalServerError);
   } 

   response.status(error.response.status).send(error.response);

应用程序ts

const Errors = {
  BadRequest: {
    status: 400,
    message: "Request has wrong format."
  },
  Unauthorized: {
    status: 401,
    message: "Authentication credentials not valid."
  },
  Forbidden: {
    status: 403,
    message: "You're missing permission to execute this request."
  }
}

export class ErrorREST extends Error {
   public response: { status: number; message: string; detail: string };

    constructor(error: { status: number, message: string }, detail: string = undefined, ...args) {
       super(...args);
       this.response = {status: error.status, message: error.message, detail: detail};
   }
}

 this.express.use('/api/users', usersRouter);

 this.express.use(function (error, request, response, next) {

      logRequest(console.error, request);
      console.error("ERROR OCCURRED:");
      console.error(error);

   if (error == null || error.response == null) {//error is not a custom error
      error = new ErrorREST(Errors.InternalServerError);
   } 

   response.status(error.response.status).send(error.response);

将错误返回给用户

async function authenticate(request, response, next) {
    if(!request.body.email) {
        return next(new ErrorREST(Errors.BadRequest, "User name missing."));
    }
}

return next(new ErrorREST(Errors.Unauthorized));
return next(new ErrorREST(Errors.Unauthorized), "Authentication credentials not valid.");

---

这里的问题并不明显。

type

参数的类型必须为

{status:number，message:string}

。如果不是这样，你的问题是什么？这是一个很好的提示，但主要问题是这个。在这个范围内不知道响应。因为我不知道这在JavaScript中是如何工作的，所以我无法在typescript中修复它