Override Luxon formatters example

CustomLuxonDateTime.js

import { DateTime } from 'luxon';

export default class CustomLuxonDateTime extends DateTime {
  toISO(opts = {}) {
    if (!this.isValid) {
      return null;
    }

    const timeOpts = {
      suppressMilliseconds: true,
      ...opts,
    };

    return `${this.toISODate(opts)}T${this.toISOTime(timeOpts)}`;
  }
}