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-import startOfWeek from "../startOfWeek/index.js";
-import getTimezoneOffsetInMilliseconds from "../_lib/getTimezoneOffsetInMilliseconds/index.js";
-import requiredArgs from "../_lib/requiredArgs/index.js";
-var MILLISECONDS_IN_WEEK = 604800000;
-
-/**
- * @name differenceInCalendarWeeks
- * @category Week Helpers
- * @summary Get the number of calendar weeks between the given dates.
- *
- * @description
- * Get the number of calendar weeks between the given dates.
- *
- * @param {Date|Number} dateLeft - the later date
- * @param {Date|Number} dateRight - the earlier 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 number of calendar weeks
- * @throws {TypeError} 2 arguments required
- * @throws {RangeError} `options.weekStartsOn` must be between 0 and 6
- *
- * @example
- * // How many calendar weeks are between 5 July 2014 and 20 July 2014?
- * const result = differenceInCalendarWeeks(
- * new Date(2014, 6, 20),
- * new Date(2014, 6, 5)
- * )
- * //=> 3
- *
- * @example
- * // If the week starts on Monday,
- * // how many calendar weeks are between 5 July 2014 and 20 July 2014?
- * const result = differenceInCalendarWeeks(
- * new Date(2014, 6, 20),
- * new Date(2014, 6, 5),
- * { weekStartsOn: 1 }
- * )
- * //=> 2
- */
-export default function differenceInCalendarWeeks(dirtyDateLeft, dirtyDateRight, options) {
- requiredArgs(2, arguments);
- var startOfWeekLeft = startOfWeek(dirtyDateLeft, options);
- var startOfWeekRight = startOfWeek(dirtyDateRight, options);
- var timestampLeft = startOfWeekLeft.getTime() - getTimezoneOffsetInMilliseconds(startOfWeekLeft);
- var timestampRight = startOfWeekRight.getTime() - getTimezoneOffsetInMilliseconds(startOfWeekRight);
-
- // Round the number of days to the nearest integer
- // because the number of milliseconds in a week is not constant
- // (e.g. it's different in the week of the daylight saving time clock shift)
- return Math.round((timestampLeft - timestampRight) / MILLISECONDS_IN_WEEK);
-} \ No newline at end of file
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