implement express controller class with typescript
You need to use the bind function to keep the scope of this when the method is invoked:
let user = new User();router.get("/", user.test.bind(user));Or you can do that in the User constructor:
export class User { constructor() { this.test = this.test.bind(this); } test(req, res, next) { ... }}Another option is to use an arrow function:
let user = new User();router.get("/", (req, res, next) => user.test(req, res, next));
You can use export default and instantiate the controller so it can be used without instantiation in whichever file you've imported the controller.
register.controller.ts
import { Router, Request, Response, NextFunction } from 'express';class Register { constructor() { this.register = this.register.bind(this); } register(req: Request, res: Response, next: NextFunction) { // ... removed for brevity }}export default new Register();server.ts or auth.routes.ts
import registerCtrl from '../controllers/auth/register.controller.js';// ... removed for brevityrouter.post('/register', registerCtrl.register);