How to use the react-dates.isNextDay function in react-dates

withFullScreenPortal={true}
                    onFocusChange={arg => {}}
                    onNextMonthClick={e => {}}
                    onPrevMonthClick={e => {}}
                    numberOfMonths={2}
                    orientation="horizontal"
                    monthFormat="MM"
                    renderDay={day => day.toString()}
                    />
    }
}


const isInclusivelyAfterDayResult: boolean = isInclusivelyAfterDay(moment(),moment());
const isInclusivelyBeforeDayResult: boolean = isInclusivelyBeforeDay(moment(),moment());
const isNextDayDayResult: boolean = isNextDay(moment(),moment());
const isSameDayResult: boolean = isSameDay(moment(),moment());
const toISODateStringResult: string | null = toISODateString(moment(), "dd.mm.yyyy");
const toLocalizedDateStringResult: string | null = toLocalizedDateString(moment(), "dd.mm.yyyy");
const toMomentObjectResult: moment.Moment | null = toMomentObject(moment(), "dd.mm.yyyy");

}












const isInclusivelyAfterDayResult: boolean = isInclusivelyAfterDay(moment(),moment());
const isInclusivelyBeforeDayResult: boolean = isInclusivelyBeforeDay(moment(),moment());
const isNextDayDayResult: boolean = isNextDay(moment(),moment());
const isSameDayResult: boolean = isSameDay(moment(),moment());
const toISODateStringResult: string | null = toISODateString(moment(), "dd.mm.yyyy");
const toLocalizedDateStringResult: string | null = toLocalizedDateString(moment(), "dd.mm.yyyy");
const toMomentObjectResult: moment.Moment | null = toMomentObject(moment(), "dd.mm.yyyy");