init

mc_test/node_modules/date-fns/esm/setISOWeek/index.js

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+import toInteger from "../_lib/toInteger/index.js";
+import toDate from "../toDate/index.js";
+import getISOWeek from "../getISOWeek/index.js";
+import requiredArgs from "../_lib/requiredArgs/index.js";
+/**
+ * @name setISOWeek
+ * @category ISO Week Helpers
+ * @summary Set the ISO week to the given date.
+ *
+ * @description
+ * Set the ISO week to the given date, saving the weekday number.
+ *
+ * ISO week-numbering year: http://en.wikipedia.org/wiki/ISO_week_date
+ *
+ * @param {Date|Number} date - the date to be changed
+ * @param {Number} isoWeek - the ISO week of the new date
+ * @returns {Date} the new date with the ISO week set
+ * @throws {TypeError} 2 arguments required
+ *
+ * @example
+ * // Set the 53rd ISO week to 7 August 2004:
+ * const result = setISOWeek(new Date(2004, 7, 7), 53)
+ * //=> Sat Jan 01 2005 00:00:00
+ */
+export default function setISOWeek(dirtyDate, dirtyISOWeek) {
+  requiredArgs(2, arguments);
+  var date = toDate(dirtyDate);
+  var isoWeek = toInteger(dirtyISOWeek);
+  var diff = getISOWeek(date) - isoWeek;
+  date.setDate(date.getDate() - diff * 7);
+  return date;
+}