text: import toDate from '../toDate/index.js'
  
  /**
   * @name lastDayOfWeek
   * @category Week Helpers
   * @summary Return the last day of a week for the given date.
   *
   * @description
   * Return the last day of a week for the given date.
   * The result will be in the local timezone.
   *
   * @param {Date|String|Number} date - the original date
   * @param {Options} [options] - the object with options. See [Options]{@link https://date-fns.org/docs/Options}
   * @param {0|1|2} [options.additionalDigits=2] - passed to `toDate`. See [toDate]{@link https://date-fns.org/docs/toDate}
   * @param {0|1|2|3|4|5|6} [options.weekStartsOn=0] - the index of the first day of the week (0 - Sunday)
   * @param {Locale} [options.locale=defaultLocale] - the locale object. See [Locale]{@link https://date-fns.org/docs/Locale}
   * @returns {Date} the last day of a week
   * @throws {RangeError} `options.additionalDigits` must be 0, 1 or 2
   * @throws {RangeError} `options.weekStartsOn` must be between 0 and 6
   *
   * @example
   * // The last day of a week for 2 September 2014 11:55:00:
   * var result = lastDayOfWeek(new Date(2014, 8, 2, 11, 55, 0))
   * //=> Sat Sep 06 2014 00:00:00
   *
   * @example
   * // If the week starts on Monday, the last day of the week for 2 September 2014 11:55:00:
   * var result = lastDayOfWeek(new Date(2014, 8, 2, 11, 55, 0), {weekStartsOn: 1})
   * //=> Sun Sep 07 2014 00:00:00
   */
  export default function lastDayOfWeek (dirtyDate, dirtyOptions) {
    var options = dirtyOptions || {}
    var locale = options.locale
    var localeWeekStartsOn = locale && locale.options && locale.options.weekStartsOn
    var defaultWeekStartsOn = localeWeekStartsOn === undefined ? 0 : Number(localeWeekStartsOn)
    var weekStartsOn = options.weekStartsOn === undefined ? defaultWeekStartsOn : Number(options.weekStartsOn)
  
    // Test if weekStartsOn is between 0 and 6 _and_ is not NaN
    if (!(weekStartsOn >= 0 && weekStartsOn <= 6)) {
      throw new RangeError('weekStartsOn must be between 0 and 6')
    }
  
    var date = toDate(dirtyDate, dirtyOptions)
    var day = date.getDay()
    var diff = (day < weekStartsOn ? -7 : 0) + 6 - (day - weekStartsOn)
  
    date.setHours(0, 0, 0, 0)
    date.setDate(date.getDate() + diff)
    return date
  }
  