What prevents me from extending an Express Request Type?

My current code looks like this:

import { Request, Response, NextFunction } from 'express';
interface IUserRequest extends Request {
  user: User;
}


  async use(req: IUserRequest, res: Response, next: NextFunction) {
    const apiKey: string = String(req.headers['x-api-key']).trim();

However, TypeScript version 3.7.4 is showing an error:

Property 'headers' does not exist on type 'IUserRequest'
.

Can you help me understand what I might be doing wrong?

Answer №1

How silly of me - I realized that my express package was actually in the devDependencies. After installing them, everything ran smoothly without any issues.

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