I’m building a application using BullMQ and NestJS. It’s all working fine, but there is something bugging me.

When register a new queue on my application I do something like that:

    @Module({
       imports: [             
             BullModule.registerQueueAsync({
              name: 'email-queue',
           }),
      ],
      controllers: [EmailController],
      providers: [ ],
    })

Then, when I’m using it on a NestJS service, I’d do something like that:

@Injectable()
export class WhatsappQueueService {
  constructor(
    @InjectQueue('email-queue') private queue: Queue,
  ) {}

  async addMessage(dtoSendMessage: any) {
    const included = await this.queue.add(
      'send-message',
      dtoSendMessage,
    );
    return included;
  }

}

The problem is that I’d like to create a constant with the value ’email-queue’, export it from the service and use it on the Module definition. So, I don’t have to manually manage the queue names.

When I use the constant, I get a error saying that NestJS can’t find the Queue. I believe that’s something to do with the @InjectQueue() decorator.

How can I use constants to name my queues?