I have this line of code:

import {response, request, next} from 'express'

However, i get this error from the typescript compiler, in vscode:

Module '"express"' has no exported member 'next'.

EDIT: I'm importing these types in a file different from my "server.ts", therefore I would like (if possible, of course) a solution that would keep my code lean, and import just what is strictly necessary.

CodePudding user response：

Try importin the express like this:

import express from 'express';

After you created the expressApp, you can use it like this with your endpoint:

this.expressApp.post('endpointName', async (req, res, next) => { })

CodePudding user response：

The correct type for the next callback argument is NextFunction:

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

export default function (req : Request , res : Response, next : NextFunction ) {
  …
}

CodePudding user response：

Thanks for everyone's feedback.

I installed express with an "npm i express" and the version that came with it was: version 4.18.1. For this version, I solved the problem by using npm i @types/express, and, then, using "NextFunction" as the type (e.g.: import {Response, Request, NextFunction} from 'express' and then const auth = async (req : Request,res : Response , next: NextFunction))