How to extend Express Request?

[george-norris-salesforce]

Why is Typescript NOT extending the Request object? I'm beyond frustrated trying to get this to work..

Declare the type.. after installing the @types/Express package..

// global.d.ts

declare namespace Express {
  interface Request {
    user: string;
  }
}

(req, res) => {
  const user = req.user
}

Property 'user' does not exist on type 'Request'

WHY? WHY? WHY?

[joeflateau]

https://joeflateau.net/posts/extending-express-request-response-objects-in-typescript

[forivall]

The declaration needs to be in a declare global block.

Your global.d.ts should read:

declare global {
  namespace Express {
    interface Request {
      user: string;
    }
  }
}

[orta]

Hi thread, we're moving DefinitelyTyped to use GitHub Discussions for conversations the @types modules in DefinitelyTyped.

To help with the transition, we're closing all issues which haven't had activity in the last 6 months, which includes this issue. If you think closing this issue is a mistake, please pop into the TypeScript Community Discord and mention the issue in the definitely-typed channel.