Router.get method in Express is called with the wrong type: The request handler is mistaken for a child application #6304

Note: I use the typescript
When using the tokenRouter.get method in the auth/token.ts file to define a route handler, the TypeScript compiler throws a type mismatch error. The error message is as follows:

The console messages

auth/token.ts:15:30 - error TS2769: No overload matches this call.
The last overload gave the following error.
Argument of type '(req: Request<ParamsDictionary, any, any, ParsedQs, Record<string, any>>, res: Response<any, Record<string, any>>) => Response<...> | undefined' is not assignable to parameter of type 'Application<Record<string, any>>'.
Type '(req: Request<ParamsDictionary, any, any, ParsedQs, Record<string, any>>, res: Response<any, Record<string, any>>) => Response<...> | undefined' is missing the following properties from type 'Application<Record<string, any>>': init, defaultConfiguration, engine, set, and 63 more.

15 tokenRouter.get('/getToken', function(req: Request, res: Response) {
~~~~~~~~

node_modules/@types/express-serve-static-core/index.d.ts:168:5
168 (path: PathParams, subApplication: Application): T;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The last overload is declared here.

Found 1 error in auth/token.ts:15

Code part

import express, { Request, Response, Router } from 'express';

const tokenRouter: Router = express.Router();

tokenRouter.get('/getToken', function(req: Request, res: Response) {
    // 这里是处理逻辑
    const token = 'example_token';
    return res.json({ token });
});