ipfs-upload.effects.ts

 loadFile$ = createEffect(
        () =>
          this.actions$.pipe(
            ofType(IpfsUploadActions.load_image),
            withLatestFrom(this.store$.pipe(select(fromStore.getIpfsHash))),
            map(([action, ipfsHash]) => ipfsHash),
            exhaustMap((ipfsHash: string) => 
              this.ipfsSrv.getFile(ipfsHash).pipe(
                map((image: Blob) => IpfsUploadActions.load_image_success({ image })),
                catchError((err: Error) =>
                  of(ErrorActions.errorMessage({ errorMsg: err.message }))
              )
             )
            )
          )
        );