timeRangeForUrl() {
    const range = this.timeRange().raw;

    if (isDateTime(range.from)) {
      range.from = range.from.valueOf().toString();
    }
    if (isDateTime(range.to)) {
      range.to = range.to.valueOf().toString();
    }

    return range;
  }

  timeRange(): TimeRange {
    // make copies if they are moment  (do not want to return out internal moment, because they are mutable!)
    const raw = {
      from: isDateTime(this.time.from) ? dateTime(this.time.from) : this.time.from,
      to: isDateTime(this.time.to) ? dateTime(this.time.to) : this.time.to,
    };

    const timezone = this.dashboard && this.dashboard.getTimezone();

    return {
      from: dateMath.parse(raw.from, false, timezone),
      to: dateMath.parse(raw.to, true, timezone),
      raw: raw,
    };
  }

const toRawTimeRange = (range: TimeRange): RawTimeRange => {
  let from = range.raw.from;
  if (isDateTime(from)) {
    from = from.valueOf().toString(10);
  }

  let to = range.raw.to;
  if (isDateTime(to)) {
    to = to.valueOf().toString(10);
  }

  return {
    from,
    to,
  };
};

 const toUser = currentValue => {
   if (isDateTime(currentValue)) {
     return currentValue.format(format);
   } else {
     return currentValue;
   }
 };

  setTime(time: RawTimeRange, fromRouteUpdate?: boolean) {
    _.extend(this.time, time);

    // disable refresh if zoom in or zoom out
    if (isDateTime(time.to)) {
      this.oldRefresh = this.dashboard.refresh || this.oldRefresh;
      this.setAutoRefresh(false);
    } else if (this.oldRefresh && this.oldRefresh !== this.dashboard.refresh) {
      this.setAutoRefresh(this.oldRefresh);
      this.oldRefresh = null;
    }

    // update url
    if (fromRouteUpdate !== true) {
      const urlRange = this.timeRangeForUrl();
      const urlParams = this.$location.search();
      urlParams.from = urlRange.from;
      urlParams.to = urlRange.to;
      this.$location.search(urlParams);
    }

    this.$timeout(this.refreshDashboard.bind(this), 0);
  }

 it('should return parsed when parse is true', () => {
   timeSrv.setTime({ from: 'now', to: 'now-1h' });
   const time = timeSrv.timeRange();
   expect(isDateTime(time.from)).toBe(true);
   expect(isDateTime(time.to)).toBe(true);
 });