📝 Commit Details:

backend/node_modules/date-fns/lastDayOfWeek.js

@@ -0,0 +1,45 @@
+import { getDefaultOptions } from "./_lib/defaultOptions.js";
+import { toDate } from "./toDate.js";
+
+/**
+ * The {@link lastDayOfWeek} function options.
+ */
+
+/**
+ * @name lastDayOfWeek
+ * @category Week Helpers
+ * @summary Return the last day of a week for the given date.
+ *
+ * @description
+ * Return the last day of a week for the given date.
+ * The result will be in the local timezone unless a context is specified.
+ *
+ * @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).
+ * @typeParam ResultDate - The result `Date` type, it is the type returned from the context function if it is passed, or inferred from the arguments.
+ *
+ * @param date - The original date
+ * @param options - An object with options
+ *
+ * @returns The last day of a week
+ */
+export function lastDayOfWeek(date, options) {
+  const defaultOptions = getDefaultOptions();
+  const weekStartsOn =
+    options?.weekStartsOn ??
+    options?.locale?.options?.weekStartsOn ??
+    defaultOptions.weekStartsOn ??
+    defaultOptions.locale?.options?.weekStartsOn ??
+    0;
+
+  const _date = toDate(date, options?.in);
+  const day = _date.getDay();
+  const diff = (day < weekStartsOn ? -7 : 0) + 6 - (day - weekStartsOn);
+
+  _date.setHours(0, 0, 0, 0);
+  _date.setDate(_date.getDate() + diff);
+
+  return _date;
+}
+
+// Fallback for modularized imports:
+export default lastDayOfWeek;