Method minus

demo/index.tsx:64–73

(count$: Observable<number>)

  @Effect()
  minus(count$: Observable<number>): Observable<EffectAction> {
    return count$.pipe(
      mergeMap((subCount) =>
        of(
          this.getActions().add(-subCount),
          this.tips.getActions().showTips(`click minus button at ${Date.now()}`),
        ),
      ),
    )
  }
}

const InputComponent = React.memo(() => {