How to use the @grafana/data.dateMath.parse function in @grafana/data

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: TimeZone = this.dashboard ? this.dashboard.getTimezone() : undefined;

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

export function processResponsePacket(packet: DataQueryResponse, state: RunningQueryState): RunningQueryState {
  const request = state.panelData.request;
  const packets: MapOfResponsePackets = {
    ...state.packets,
  };

  packets[packet.key || 'A'] = packet;

  let loadingState = packet.state || LoadingState.Done;
  let error: DataQueryError | undefined = undefined;

  // Update the time range
  const range = { ...request.range };
  const timeRange = isString(range.raw.from)
    ? {
        from: dateMath.parse(range.raw.from, false),
        to: dateMath.parse(range.raw.to, true),
        raw: range.raw,
      }
    : range;

  const combinedData = flatten(
    lodashMap(packets, (packet: DataQueryResponse) => {
      if (packet.error) {
        loadingState = LoadingState.Error;
        error = packet.error;
      }
      return packet.data;
    })
  );

  const panelData = {

translateTime(date: any, roundUp: any, timezone: any) {
    if (_.isString(date)) {
      if (date === 'now') {
        return 'now';
      } else if (date.indexOf('now-') >= 0 && date.indexOf('/') === -1) {
        date = date.substring(3);
        date = date.replace('m', 'min');
        date = date.replace('M', 'mon');
        return date;
      }
      date = dateMath.parse(date, roundUp, timezone);
    }

    // graphite' s from filter is exclusive
    // here we step back one minute in order
    // to guarantee that we get all the data that
    // exists for the specified range
    if (roundUp) {
      if (date.get('s')) {
        date.add(1, 's');
      }
    } else if (roundUp === false) {
      if (date.get('s')) {
        date.subtract(1, 's');
      }
    }

addPoint() {
    this.target.points = this.target.points || [];
    this.newPointTime = dateMath.parse(this.newPointTime);
    this.target.points.push([this.newPointValue, this.newPointTime.valueOf()]);
    this.target.points = _.sortBy(this.target.points, p => p[1]);
    this.refresh();
  }

getPrometheusTime(date: string | DateTime, roundUp: boolean) {
    if (typeof date === 'string') {
      date = dateMath.parse(date, roundUp);
    }

    return Math.ceil(date.valueOf() / 1000);
  }

getTime(date: string | DateTime, roundUp: boolean) {
    if (typeof date === 'string') {
      date = dateMath.parse(date, roundUp);
    }

    return Math.ceil(date.valueOf() * 1e6);
  }

export const getTimeRangeFromUrl = (range: RawTimeRange, timeZone: TimeZone): TimeRange => {
  const raw = {
    from: parseRawTime(range.from),
    to: parseRawTime(range.to),
  };

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

const stringToDateTime = (value: string | DateTime, roundUp?: boolean, timeZone?: TimeZone): DateTime => {
  if (isDateTime(value)) {
    if (timeZone === 'utc') {
      return value.utc();
    }
    return value;
  }

  if (value.indexOf('now') !== -1) {
    if (!dateMath.isValid(value)) {
      return dateTime();
    }

    const parsed = dateMath.parse(value, roundUp, timeZone);
    return parsed || dateTime();
  }

  return dateTimeForTimeZone(timeZone, value, TIME_FORMAT);
};

convertToCloudWatchTime(date: any, roundUp: any) {
    if (_.isString(date)) {
      date = dateMath.parse(date, roundUp);
    }
    return Math.round(date.valueOf() / 1000);
  }