Nestjs Websocket - Emitting an event within a service

chat.gateway.js

@WebSocketGateway()
export class ChatGateway
  implements OnGatewayInit
{
  constructor(
    private roomService: RoomService
  ) {}

  @WebSocketServer()
  public server: Server = new Server();

  afterInit(server: Server) {
    this.roomService.server = server
  }
  // ...
}

room.service.js

@Injectable()
export class RoomService {
  constructor() {}
  public server: Server
  // ...
}

socket.module.js

@Module({
  imports: [ChatModule, RoomModule],
})
export class SocketsModule {}