📝 Commit Details:

backend/node_modules/date-fns/startOfWeekYear.d.cts

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+import type {
+  ContextOptions,
+  DateArg,
+  FirstWeekContainsDateOptions,
+  LocalizedOptions,
+  WeekOptions,
+} from "./types.js";
+/**
+ * The {@link startOfWeekYear} function options.
+ */
+export interface StartOfWeekYearOptions<DateType extends Date = Date>
+  extends LocalizedOptions<"options">,
+    FirstWeekContainsDateOptions,
+    WeekOptions,
+    ContextOptions<DateType> {}
+/**
+ * @name startOfWeekYear
+ * @category Week-Numbering Year Helpers
+ * @summary Return the start of a local week-numbering year for the given date.
+ *
+ * @description
+ * Return the start of a local week-numbering year.
+ * The exact calculation depends on the values of
+ * `options.weekStartsOn` (which is the index of the first day of the week)
+ * and `options.firstWeekContainsDate` (which is the day of January, which is always in
+ * the first week of the week-numbering year)
+ *
+ * Week numbering: https://en.wikipedia.org/wiki/Week#The_ISO_week_date_system
+ *
+ * @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.
+ *
+ * @param date - The original date
+ * @param options - An object with options
+ *
+ * @returns The start of a week-numbering year
+ *
+ * @example
+ * // The start of an a week-numbering year for 2 July 2005 with default settings:
+ * const result = startOfWeekYear(new Date(2005, 6, 2))
+ * //=> Sun Dec 26 2004 00:00:00
+ *
+ * @example
+ * // The start of a week-numbering year for 2 July 2005
+ * // if Monday is the first day of week
+ * // and 4 January is always in the first week of the year:
+ * const result = startOfWeekYear(new Date(2005, 6, 2), {
+ *   weekStartsOn: 1,
+ *   firstWeekContainsDate: 4
+ * })
+ * //=> Mon Jan 03 2005 00:00:00
+ */
+export declare function startOfWeekYear<
+  DateType extends Date,
+  ResultDate extends Date = DateType,
+>(
+  date: DateArg<DateType>,
+  options?: StartOfWeekYearOptions<ResultDate>,
+): ResultDate;