How to use the @reactivex/rxjs.Observable.combineLatestObj function in @reactivex/rxjs

/* ========================== handlers ====================================== */

export const increaseCount =
  Observable.of(() => {
    dispatch(Actions.COUNTER_INCREASED)
  })

export const decreaseCount =
  Observable.of(() => {
    dispatch(Actions.COUNTER_DECREASED)
  })

/* ======================== all together ==================================== */

export default
  Observable
    .combineLatestObj({count, increaseCount, decreaseCount})