v1.0 with SW PWA enabled

frontend/node_modules/date-fns/lastDayOfISOWeekYear.mjs

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+import { getISOWeekYear } from "./getISOWeekYear.mjs";
+import { startOfISOWeek } from "./startOfISOWeek.mjs";
+import { constructFrom } from "./constructFrom.mjs";
+
+/**
+ * @name lastDayOfISOWeekYear
+ * @category ISO Week-Numbering Year Helpers
+ * @summary Return the last day of an ISO week-numbering year for the given date.
+ *
+ * @description
+ * Return the last day of an ISO week-numbering year,
+ * which always starts 3 days before the year's first Thursday.
+ * The result will be in the local timezone.
+ *
+ * ISO week-numbering year: http://en.wikipedia.org/wiki/ISO_week_date
+ *
+ * @typeParam DateType - The `Date` type, the function operates on. Gets inferred from passed arguments. Allows to use extensions like [`UTCDate`](https://github.com/date-fns/utc).
+ *
+ * @param date - The original date
+ *
+ * @returns The end of an ISO week-numbering year
+ *
+ * @example
+ * // The last day of an ISO week-numbering year for 2 July 2005:
+ * const result = lastDayOfISOWeekYear(new Date(2005, 6, 2))
+ * //=> Sun Jan 01 2006 00:00:00
+ */
+export function lastDayOfISOWeekYear(date) {
+  const year = getISOWeekYear(date);
+  const fourthOfJanuary = constructFrom(date, 0);
+  fourthOfJanuary.setFullYear(year + 1, 0, 4);
+  fourthOfJanuary.setHours(0, 0, 0, 0);
+  const _date = startOfISOWeek(fourthOfJanuary);
+  _date.setDate(_date.getDate() - 1);
+  return _date;
+}
+
+// Fallback for modularized imports:
+export default lastDayOfISOWeekYear;