📝 Commit Details:

backend/node_modules/date-fns/eachWeekOfInterval.js

@@ -0,0 +1,83 @@
+import { normalizeInterval } from "./_lib/normalizeInterval.js";
+import { addWeeks } from "./addWeeks.js";
+import { constructFrom } from "./constructFrom.js";
+import { startOfWeek } from "./startOfWeek.js";
+
+/**
+ * The {@link eachWeekOfInterval} function options.
+ */
+
+/**
+ * The {@link eachWeekOfInterval} function result type. It resolves the proper data type.
+ * It uses the first argument date object type, starting from the interval start date,
+ * then the end interval date. If a context function is passed, it uses the context function return type.
+ */
+
+/**
+ * @name eachWeekOfInterval
+ * @category Interval Helpers
+ * @summary Return the array of weeks within the specified time interval.
+ *
+ * @description
+ * Return the array of weeks within the specified time interval.
+ *
+ * @param interval - The interval.
+ * @param options - An object with options.
+ *
+ * @returns The array with starts of weeks from the week of the interval start to the week of the interval end
+ *
+ * @example
+ * // Each week within interval 6 October 2014 - 23 November 2014:
+ * const result = eachWeekOfInterval({
+ *   start: new Date(2014, 9, 6),
+ *   end: new Date(2014, 10, 23)
+ * })
+ * //=> [
+ * //   Sun Oct 05 2014 00:00:00,
+ * //   Sun Oct 12 2014 00:00:00,
+ * //   Sun Oct 19 2014 00:00:00,
+ * //   Sun Oct 26 2014 00:00:00,
+ * //   Sun Nov 02 2014 00:00:00,
+ * //   Sun Nov 09 2014 00:00:00,
+ * //   Sun Nov 16 2014 00:00:00,
+ * //   Sun Nov 23 2014 00:00:00
+ * // ]
+ */
+export function eachWeekOfInterval(interval, options) {
+  const { start, end } = normalizeInterval(options?.in, interval);
+
+  let reversed = +start > +end;
+  const startDateWeek = reversed
+    ? startOfWeek(end, options)
+    : startOfWeek(start, options);
+  const endDateWeek = reversed
+    ? startOfWeek(start, options)
+    : startOfWeek(end, options);
+
+  startDateWeek.setHours(15);
+  endDateWeek.setHours(15);
+
+  const endTime = +endDateWeek.getTime();
+  let currentDate = startDateWeek;
+
+  let step = options?.step ?? 1;
+  if (!step) return [];
+  if (step < 0) {
+    step = -step;
+    reversed = !reversed;
+  }
+
+  const dates = [];
+
+  while (+currentDate <= endTime) {
+    currentDate.setHours(0);
+    dates.push(constructFrom(start, currentDate));
+    currentDate = addWeeks(currentDate, step);
+    currentDate.setHours(15);
+  }
+
+  return reversed ? dates.reverse() : dates;
+}
+
+// Fallback for modularized imports:
+export default eachWeekOfInterval;