await gb.loadFeatures({ autoRefresh: true });

constructor(
    @Inject(AB_TESTING_OPTIONS) private options: ABTestingOptions,
    private abTestingIntegrationService: ABTestingIntegrationService,
    private logger: LoggerService
  ) {
    logger.setContext(ABTestingService.name);

    setPolyfills({
      // Required for Node 17 or earlier
      fetch: fetch,
      EventSource: EventSource
    });

    this.growthbook = new GrowthBook({
      apiHost: '<https://cdn.growthbook.io>',
      clientKey: this.options.growthbookSdkKey,
      enableDevMode: true,
      trackingCallback: this.trackingCallback.bind(this)
    });
  }

  public async onApplicationBootstrap() {
    await this.growthbook.loadFeatures({
      autoRefresh: true,
      timeout: 2000
    });
  }