DefaultPuppeteerBrowser at index [0] is available

[khwerhahn]

Hi,

I cannot get my app to work.

Error: Nest can't resolve dependencies of the ScrapeAccountService (?). Please make sure that the argument DefaultPuppeteerBrowser at index [0] is available in the AppModule context.

What am I missing?

app.module.ts:

@Module({
  imports: [
    PuppeteerModule.forRoot(
      {
        pipe: true,
        isGlobal: true,
      }, // optional, any Puppeteer launch options here or leave empty for good defaults */,
      'ScrapeInstance', // optional, can be useful for using Chrome and Firefox in the same project
    ),
    ClientsModule.register([
      {
        name: 'MQ_CLIENT',
        transport: Transport.MQTT,
        options: {
          url: 'ws://mosquitto:1883',
          clientId: 'scraper_' + Math.random().toString(16).substr(2, 8),
        },
      },
    ]),
  ],
  controllers: [AppController, BrokerFlatexAccountController],
  providers: [AppService, BrokerFlatexAccountService],
})
export class AppModule { }

controller:

@Controller('broker-flatex-account')
export class BrokerFlatexAccountController implements OnApplicationBootstrap {
    constructor(
        @Inject('MQ_CLIENT') private client: ClientProxy,
        private flatex: BrokerFlatexAccountService,
    ) { }

    async onApplicationBootstrap(): Promise<void> {
        return await this.client.connect();
    }

    async publish(data) {
        console.log('sending back', data);
        this.client.emit<number>('broker-flatex-account-scraped', data);
    }


    @EventPattern('broker-flatex-account-scrape')
    async handleMessagePrinted(data: Record<string, unknown>) {
        console.log('broker-flatex-account-scrape', data);

        let accounts = await this.flatex.srvScrapeFlatexAccounts(data.user, data.pwd)

        this.publish(accounts)
    }
}

service (cut some code)

@Injectable()
export class BrokerFlatexAccountService {
    constructor(@InjectBrowser() private readonly browser: Browser) { }

    async srvScrapeFlatexAccounts(user) {
        return await scrapeFlatex(user, this.browser)
    }
}

[wdsrocha]

It seems that the second parameter of forRoot have a bug. I just had the same problem, and after removing this parameter, everything worked normally.

[wdsrocha]

Nevermind! Just realized that @InjectBrowser must receive the same instanceName that you have defined

So your service constructor should be

- 	constructor(@InjectBrowser() private readonly browser: Browser) { }
+ 	constructor(@InjectBrowser('ScrapeInstance') private readonly browser: Browser) { }

I think the problem here is that the error message is quite misleading.