text: import toDate from "../toDate/index.js";
  import requiredArgs from "../_lib/requiredArgs/index.js";
  /**
   * @name lastDayOfMonth
   * @category Month Helpers
   * @summary Return the last day of a month for the given date.
   *
   * @description
   * Return the last day of a month for the given date.
   * The result will be in the local timezone.
   *
   * ### v2.0.0 breaking changes:
   *
   * - [Changes that are common for the whole library](https://github.com/date-fns/date-fns/blob/master/docs/upgradeGuide.md#Common-Changes).
   *
   * @param {Date|Number} date - the original date
   * @returns {Date} the last day of a month
   * @throws {TypeError} 1 argument required
   *
   * @example
   * // The last day of a month for 2 September 2014 11:55:00:
   * var result = lastDayOfMonth(new Date(2014, 8, 2, 11, 55, 0))
   * //=> Tue Sep 30 2014 00:00:00
   */
  
  export default function lastDayOfMonth(dirtyDate) {
    requiredArgs(1, arguments);
    var date = toDate(dirtyDate);
    var month = date.getMonth();
    date.setFullYear(date.getFullYear(), month + 1, 0);
    date.setHours(0, 0, 0, 0);
    return date;
  }