energylink/public/app/plugins/panel/table2/sortable.tsx

// Libraries
import isNumber from 'lodash/isNumber';

import { TableData } from '@grafana/ui';

export function sortTableData(data: TableData, sortIndex?: number, reverse = false): TableData {
  if (isNumber(sortIndex)) {
    const copy = {
      ...data,
      rows: data.rows.map((row, index) => {
        return row;
      }),
    };

    copy.rows.sort((a, b) => {
      a = a[sortIndex];
      b = b[sortIndex];
      // Sort null or undefined separately from comparable values
      return +(a == null) - +(b == null) || +(a > b) || -(a < b);
    });

    if (reverse) {
      copy.rows.reverse();
    }

    return copy;
  }
  return data;
}