我们有一个用Express和Typescript编写的大型API，这就是我们处理此类情况的方式:

We have a large API written in Express and Typescript, and this is how we handle such scenarios:

我们将请求定义保存在一个文件中:

We keep the request definitions in one file:

import { Request } from "express"
export interface IGetUserAuthInfoRequest extends Request {
  user: string // or any other type
}

然后在我们要编写控制器功能的文件中:

And then in the file where we are writing the controller functions:

import { Response } from "express"
import { IGetUserAuthInfoRequest } from "./definitionfile"

app.get('/auth/userInfo', validateUser,  (req: IGetUserAuthInfoRequest, res: Response) => {
  res.status(200).json(req.user); // Start calling status function to be compliant with Express 5.0
});

请注意，用户"不是Express的Request对象中本机可用的属性.确保您正在使用将此类属性添加到请求对象的中间件.

Be advised that "user" is not a property that is available natively in the Request object of Express. Make sure that you are using a middleware that adds such property to the request object.