12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485
import { WeekStartOptions } from '../types.ts'import addWeeks from '../addWeeks/index.ts'import startOfWeek from '../startOfWeek/index.ts'import toDate from '../toDate/index.ts'import requiredArgs from '../_lib/requiredArgs/index.ts'
/** * @name eachWeekOfInterval * @category Interval Helpers * @summary Return the array of weeks within the specified time interval. * * @description * Return the array of weeks within the specified time interval. * * ### 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 {Interval} interval - the interval. See [Interval]{@link https://date-fns.org/docs/Interval} * @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 {Date[]} the array with starts of weeks from the week of the interval start to the week of the interval end * @throws {TypeError} 1 argument required * @throws {RangeError} `options.weekStartsOn` must be 0, 1, ..., 6 * @throws {RangeError} The start of an interval cannot be after its end * @throws {RangeError} Date in interval cannot be `Invalid Date` * * @example * // Each week within interval 6 October 2014 - 23 November 2014: * var result = eachWeekOfInterval({ *   start: new Date(2014, 9, 6), *   end: new Date(2014, 10, 23) * }) * //=> [ * //   Sun Oct 05 2014 00:00:00, * //   Sun Oct 12 2014 00:00:00, * //   Sun Oct 19 2014 00:00:00, * //   Sun Oct 26 2014 00:00:00, * //   Sun Nov 02 2014 00:00:00, * //   Sun Nov 09 2014 00:00:00, * //   Sun Nov 16 2014 00:00:00, * //   Sun Nov 23 2014 00:00:00 * // ] */export default function eachWeekOfInterval(  dirtyInterval: Interval,  options?: WeekStartOptions): Date[] {  requiredArgs(1, arguments)
  const interval = dirtyInterval || {}  const startDate = toDate(interval.start)  const endDate = toDate(interval.end)
  var endTime = endDate.getTime()
  // Throw an exception if start date is after end date or if any date is `Invalid Date`  if (!(startDate.getTime() <= endTime)) {    throw new RangeError('Invalid interval')  }
  const startDateWeek = startOfWeek(startDate, options)  const endDateWeek = startOfWeek(endDate, options)
  // Some timezones switch DST at midnight, making start of day unreliable in these timezones, 3pm is a safe bet  startDateWeek.setHours(15)  endDateWeek.setHours(15)
  endTime = endDateWeek.getTime()
  const weeks = []
  let currentWeek = startDateWeek
  while (currentWeek.getTime() <= endTime) {    currentWeek.setHours(0)    weeks.push(toDate(currentWeek))    currentWeek = addWeeks(currentWeek, 1)    currentWeek.setHours(15)  }
  return weeks}