RegStore.ts

// Not so perfect
export class RegStore extends ComponentStore<SomeState> {
    private readonly registrationSuccess$ = this.effect(_ => _.pipe(
        tap(() => {
            this.patchState({success: true});
            this.regsCounterAdd$();
        })
    ));
    private readonly regsCounterAdd$ = this.effect(_ => _.pipe(
      siwtchMap(() => this.regSrv.increaseCounter())
    ));
    constructor(private readonly regSrv: RegService) {
      super({});
    } 
}
// Better
export class RegStore extends ComponentStore<SomeState> {
    private readonly registrationSuccess$ = this.effect(_ => _.pipe(
        switchMap(() => {
            this.patchState({success: true});
            return this.regCounterRequest();
        })
    ));
    private regCounterRequest(): Observable<unknown> {
      return this.regSrv.increaseCounter();
    }
    
    constructor(private readonly regSrv: RegService) {
      super({});
    } 
}