grafana-jool/public/app/features/explore/utils/time.ts

import { isDateTime, RawTimeRange, TimeRange } from '@grafana/data';

export 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,
  };
};