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import getDate from '../getDate/index.ts'import getDay from '../getDay/index.ts'import startOfMonth from '../startOfMonth/index.ts'import toInteger from '../_lib/toInteger/index.ts'import requiredArgs from '../_lib/requiredArgs/index.ts'
/** * @name getWeekOfMonth * @category Week Helpers * @summary Get the week of the month of the given date. * * @description * Get the week of the month of the given date. * * ### 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 given date * @param {Object} [options] - an object with options. * @param {Locale} [options.locale=defaultLocale] - the locale object. See [Locale]{@link https://date-fns.org/docs/Locale} * @param {0|1|2|3|4|5|6} [options.weekStartsOn=0] - the index of the first day of the week (0 - Sunday) * @returns {Number} the week of month * @throws {TypeError} 1 argument required * @throws {RangeError} `options.weekStartsOn` must be between 0 and 6 * * @example * // Which week of the month is 9 November 2017? * var result = getWeekOfMonth(new Date(2017, 10, 9)) * //=> 2 */export default function getWeekOfMonth(date, dirtyOptions) {  requiredArgs(1, arguments)
  var options = dirtyOptions || {}  var locale = options.locale  var localeWeekStartsOn =    locale && locale.options && locale.options.weekStartsOn  var defaultWeekStartsOn =    localeWeekStartsOn == null ? 0 : toInteger(localeWeekStartsOn)  var weekStartsOn =    options.weekStartsOn == null      ? defaultWeekStartsOn      : toInteger(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 inclusively')  }
  var currentDayOfMonth = getDate(date)  if (isNaN(currentDayOfMonth)) {    return currentDayOfMonth  }
  var startWeekDay = getDay(startOfMonth(date))  var lastDayOfFirstWeek = 0
  if (startWeekDay >= weekStartsOn) {    lastDayOfFirstWeek = weekStartsOn + 7 - startWeekDay  } else {    lastDayOfFirstWeek = weekStartsOn - startWeekDay  }
  var weekNumber = 1
  if (currentDayOfMonth > lastDayOfFirstWeek) {    var remainingDaysAfterFirstWeek = currentDayOfMonth - lastDayOfFirstWeek    weekNumber = weekNumber + Math.ceil(remainingDaysAfterFirstWeek / 7)  }  return weekNumber}