Business
Jobs
  • About Us
  • Solutions
    • Job Postings
      Post your job and receive qualified candidates in 48h.
    • Candidate Assessments
      500+ technical and psychological tests, plus anti-fraud.
    • Headhunting
      Tailor-made executive search from start to finish.
    • Payroll + EOR
      Payroll dispersal and EOR across 15+ LATAM countries.
  • Pricing
  • Jobs

0

284
Views
TypeError: Cannot read properties of undefined (reading 'prototype') React Typescript + Express

I'm trying to use express at my React-Typescript SPA. But It's giving me the error:

    TypeError: Cannot read properties of undefined (reading 'prototype')
(anonymous function)
node_modules/express/lib/response.js:42
  39 |  * @public
  40 |  */
  41 | 
> 42 | var res = Object.create(http.ServerResponse.prototype)
  43 | 
  44 | /**
  45 |  * Module exports.

I've tried adding target: "node" to my "node_modules/react-scripts/config/webpack.config.js" But it won't work...

Here's some ways I've already tried to solve it:

    import express from "express";
    app = express();
---------------
    import express from "express";
    let app: express.Application;
    app = express();
-------------

    import express from "express";
    let app: any;
    app = express();

-------------
    const express require("express");
    let app: express.Application;
    app = express();
about 4 years ago · Juan Pablo Isaza
2 answers
Answer question

0

You have to instantiate both the app and express, use the const keyword as well.

const express = require('express');
const app = express();

Also, look for anywhere in your code base where you have:

import { response } from 'express';

Often this is put in by mistake and removing this line may solve the error

about 4 years ago · Juan Pablo Isaza Report

0

Faced same issue

it was imported under

import e from "express";

not sure cuz of any random IntelliSense extension or maybe the GH copilot auto-completion

about 4 years ago · Juan Pablo Isaza Report
Answer question
Find remote jobs

Discover the new way to find a job!

Top jobs
Top job categories
Business
Post vacancy Pricing Sales
Legal
Terms and conditions Privacy policy
© 2026 PeakU Inc. All Rights Reserved.
Andres GPT
Show me some job opportunities
There's an error!