NestJS: Resolving dependencies in NestMiddleware? - express-session

Question

I'm trying to combine express-session with a typeorm storage within NestJS framework. Therefore I wrote a NestMiddleware as wrapper for express-session (see below). When I start node, NestJS logs the following
Error message:
UnhandledPromiseRejectionWarning: Unhandled promise rejection
(rejection id: 1): Error: Nest can't resolve dependencies of the
SessionMiddleware (?). Please verify whether [0] argument is available
in the current context.
Express is not started (connection refused), but the Sqlite DB (where the sessions should be stored) is created (also a session table, but not the columns).
To me it looks like there is a special problem in resolving dependencies with #InjectRepository from nestjs/typorm-Module. Does anyone have a hint?
Code:
import { Middleware, NestMiddleware, ExpressMiddleware } from '#nestjs/common';
import * as expressSession from 'express-session';
import { InjectRepository } from '#nestjs/typeorm';
import { Repository } from 'typeorm';
import { TypeormStore } from 'connect-typeorm';
import { Session } from './session.entity';
#Middleware()
export class SessionMiddleware implements NestMiddleware {
constructor(
#InjectRepository(Session)
private readonly sessionRepository: Repository<Session>
) {}
resolve(): ExpressMiddleware {
return expressSession({
store: new TypeormStore({ ttl: 86400 }).connect(this.sessionRepository),
secret: 'secret'
});
}
}

Answer 1

It was my fault. Had the middleware in a module, but was configuring the session middleware at the app module level. On that level the following import statement was missing:
TypeOrmModule.forFeature([Session])
Moved now everything to non-app module including middleware configuration. That solved the problem.