📝 Commit Details:

backend/node_modules/date-fns/getISOWeek.cjs

@@ -0,0 +1,42 @@
+"use strict";
+exports.getISOWeek = getISOWeek;
+var _index = require("./constants.cjs");
+var _index2 = require("./startOfISOWeek.cjs");
+var _index3 = require("./startOfISOWeekYear.cjs");
+var _index4 = require("./toDate.cjs");
+
+/**
+ * The {@link getISOWeek} function options.
+ */
+
+/**
+ * @name getISOWeek
+ * @category ISO Week Helpers
+ * @summary Get the ISO week of the given date.
+ *
+ * @description
+ * Get the ISO week of the given date.
+ *
+ * ISO week-numbering year: http://en.wikipedia.org/wiki/ISO_week_date
+ *
+ * @param date - The given date
+ * @param options - The options
+ *
+ * @returns The ISO week
+ *
+ * @example
+ * // Which week of the ISO-week numbering year is 2 January 2005?
+ * const result = getISOWeek(new Date(2005, 0, 2))
+ * //=> 53
+ */
+function getISOWeek(date, options) {
+  const _date = (0, _index4.toDate)(date, options?.in);
+  const diff =
+    +(0, _index2.startOfISOWeek)(_date) -
+    +(0, _index3.startOfISOWeekYear)(_date);
+
+  // Round the number of weeks 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(diff / _index.millisecondsInWeek) + 1;
+}