Unable to use controller function in routes.(get|post|put|...) in place of ...handlers: RequestHandler with extended Request interface

[SwapnilSoni1999]

Getting following error when I use custom extended Request interface

here's how I extend

export interface AuthRequest extends Request {
  user: {
    id: string;
    [key: string]: any;
  };
}

here is the error

Argument of type '(req: AuthRequest, res: Response) => Promise<void>' is not assignable to parameter of type 'RequestHandlerParams<ParamsDictionary, any, any, ParsedQs, Record<string, any>>'

The full error:

 Argument of type '(req: AuthRequest, res: Response) => Promise<void>' is not assignable to parameter of type 'RequestHandlerParams<ParamsDictionary, any, any, ParsedQs, Record<string, any>>'.
      Type '(req: AuthRequest, res: Response) => Promise<void>' is not assignable to type 'RequestHandler<ParamsDictionary, any, any, ParsedQs, Record<string, any>>'.
        Types of parameters 'req' and 'req' are incompatible.
          Type 'Request<ParamsDictionary, any, any, ParsedQs, Record<string, any>>' is not assignable to type 'AuthRequest'.
            Property 'user' is optional in type 'Request<ParamsDictionary, any, any, ParsedQs, Record<string, any>>' but required in type 'AuthRequest'.
            

[markcellus]

Hmm looks like the user needs to be optional. I'm a little rusty with my Typescript but does the following work?

export interface AuthRequest extends Request {
  user?: {
    id: string;
    [key: string]: any;
  };
}