How to use the react-day-picker.DateUtils.isDayBefore function in react-day-picker

isSelectingFirstDay(from: RangeState['from'], to: RangeState['to'], day: Date) {
    // @ts-ignore
    const isBeforeFirstDay = from && DateUtils.isDayBefore(day, from);
    const isRangeSelected = from && to;

    return !from || isBeforeFirstDay || isRangeSelected;
  }

isSelectingFirstDay = (from, to, day) => {
        const isBeforeFirstDay = from && DateUtils.isDayBefore(day, from);
        const isRangeSelected = from && to;
        return !from || isBeforeFirstDay || isRangeSelected;
    }

const isSelectingFirstDay = (from, to, day) => {
  const isBeforeFirstDay = from && DateUtils.isDayBefore(day, from);
  const isRangeSelected = from && to;
  return !from || isBeforeFirstDay || isRangeSelected;
};

isSelectingFirstDay(from, to, day) {
    const isBeforeFirstDay = from && DateUtils.isDayBefore(day, from);
    const isRangeSelected = from && to;
    return !from || isBeforeFirstDay || isRangeSelected;
  }

this.setState(oldState => {
      let oldTimeFrom = oldState.queryParams.timeFrom;
      if (DateUtils.isDayBefore(new Date(e), new Date(oldTimeFrom))) {
        oldTimeFrom = DateUtils.addMonths(new Date(e), -1);
      }
      return {
        queryParams: {
          ...oldState.queryParams,
          timeTo: moment(e),
          timeFrom: moment(oldTimeFrom),
        },
      };
    });
  }