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+import startOfISOWeekYear from "../startOfISOWeekYear/index.js";
+import requiredArgs from "../_lib/requiredArgs/index.js";
+/**
+ * @name isSameISOWeekYear
+ * @category ISO Week-Numbering Year Helpers
+ * @summary Are the given dates in the same ISO week-numbering year?
+ *
+ * @description
+ * Are the given dates in the same ISO week-numbering year?
+ *
+ * ISO week-numbering year: http://en.wikipedia.org/wiki/ISO_week_date
+ *
+ * @param {Date|Number} dateLeft - the first date to check
+ * @param {Date|Number} dateRight - the second date to check
+ * @returns {Boolean} the dates are in the same ISO week-numbering year
+ * @throws {TypeError} 2 arguments required
+ *
+ * @example
+ * // Are 29 December 2003 and 2 January 2005 in the same ISO week-numbering year?
+ * const result = isSameISOWeekYear(new Date(2003, 11, 29), new Date(2005, 0, 2))
+ * //=> true
+ */
+export default function isSameISOWeekYear(dirtyDateLeft, dirtyDateRight) {
+ requiredArgs(2, arguments);
+ var dateLeftStartOfYear = startOfISOWeekYear(dirtyDateLeft);
+ var dateRightStartOfYear = startOfISOWeekYear(dirtyDateRight);
+ return dateLeftStartOfYear.getTime() === dateRightStartOfYear.getTime();
+} \ No newline at end of file
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