ob.ts

// why are you passing this 'currentStatus' from the view (first element in the array) if it's
// not being used here anywhere? You only use status and productId to dispatch the action;
// BTW: don't use array indices like arr[0], arr[1] ;-) that's not the reactive way.

this.onReject$
  .switchMap(([currentStatus, status]: string[]): Observable<any> =>
    this.product$.filter(Boolean).first().map((product: any) => {
      const productId = product.get('id');
      return { currentStatus, status, productId };
    })
  )
  .switchMap(({ status, productId }: any): Observable<boolean> => {
    this.productStatusesActions.reject(status, productId);
    return this.isProductRejectSuccess$.filter(Boolean);
  })
  .subscribe(() => this.router.navigate(['/dashboard/product-ideas/products']));


this.onReadyToSell$
  .switchMap(([currentStatus, status]: string[]): Observable<any> =>
    this.product$.filter(Boolean).first().map((product: any) => {
      const productId = product.get('id');
      return { currentStatus, status, productId };
    })
  )
  .switchMap(({ status, productId }: any): Observable<number> => { //productId is a number or string? Change the type here
    this.productStatusesActions.readyToSell(status, productId);
    
    return this.isProductReadyToSellSuccess$
      .filter(Boolean)
      .switchMapTo(Observable.of(productId));
  })
  .subscribe((productId: number) => this.productActions.calculateELC(productId));
/**
* skipUntil won't work because the source emits one value and then completes
* so it skips the first - and only - item of the source observable
* and waits for more value but no more values will come so you'll never hit the subscribe().
* It's like doing Observable.of(1).skipUntil(Observable.empty()).subscribe(console.log)
* The number 1 will never be passed to the subscriber.
**/