Big picture is I want the service to return a boolean as I don’t want the consumer to have to do the subscribing/unsubscribing. I want them to call getBooleanFeatureToggle(toggleKey: string) and return the boolean.

  getBooleanFeatureToggleAsObservable(toggleKey: string): Observable<boolean> {
    return from(this.getBooleanFeatureToggleAsPromise(toggleKey));
  }

  public async getMyFlag(toggleKey: string): Promise<boolean> {
    let flag = false;
    const sub = await this.getBooleanFeatureToggleAsObservable(toggleKey).subscribe({

        next: (featureEnabled: boolean) => {
            console.log('featureEnabled', featureEnabled);
            flag = featureEnabled;
        },
        error: (error: any) => console.error(error)
    });

    return await flag;
}

  public getBooleanFeatureToggle(toggleKey: string) {
    const myFlag = this.getMyFlag(toggleKey);
    console.log('myFlag', myFlag);
    return false;
  }