📝 Commit Details:

backend/node_modules/date-fns/eachQuarterOfInterval.js

@@ -0,0 +1,70 @@
+import { normalizeInterval } from "./_lib/normalizeInterval.js";
+import { addQuarters } from "./addQuarters.js";
+import { constructFrom } from "./constructFrom.js";
+import { startOfQuarter } from "./startOfQuarter.js";
+
+/**
+ * The {@link eachQuarterOfInterval} function options.
+ */
+
+/**
+ * The {@link eachQuarterOfInterval} function result type. It resolves the proper data type.
+ * It uses the first argument date object type, starting from the date argument,
+ * then the start interval date, and finally the end interval date. If
+ * a context function is passed, it uses the context function return type.
+ */
+
+/**
+ * @name eachQuarterOfInterval
+ * @category Interval Helpers
+ * @summary Return the array of quarters within the specified time interval.
+ *
+ * @description
+ * Return the array of quarters within the specified time interval.
+ *
+ * @typeParam IntervalType - Interval type.
+ * @typeParam Options - Options type.
+ *
+ * @param interval - The interval
+ * @param options - An object with options
+ *
+ * @returns The array with starts of quarters from the quarter of the interval start to the quarter of the interval end
+ *
+ * @example
+ * // Each quarter within interval 6 February 2014 - 10 August 2014:
+ * const result = eachQuarterOfInterval({
+ *   start: new Date(2014, 1, 6),
+ *   end: new Date(2014, 7, 10),
+ * })
+ * //=> [
+ * //   Wed Jan 01 2014 00:00:00,
+ * //   Tue Apr 01 2014 00:00:00,
+ * //   Tue Jul 01 2014 00:00:00,
+ * // ]
+ */
+export function eachQuarterOfInterval(interval, options) {
+  const { start, end } = normalizeInterval(options?.in, interval);
+
+  let reversed = +start > +end;
+  const endTime = reversed ? +startOfQuarter(start) : +startOfQuarter(end);
+  let date = reversed ? startOfQuarter(end) : startOfQuarter(start);
+
+  let step = options?.step ?? 1;
+  if (!step) return [];
+  if (step < 0) {
+    step = -step;
+    reversed = !reversed;
+  }
+
+  const dates = [];
+
+  while (+date <= endTime) {
+    dates.push(constructFrom(start, date));
+    date = addQuarters(date, step);
+  }
+
+  return reversed ? dates.reverse() : dates;
+}
+
+// Fallback for modularized imports:
+export default eachQuarterOfInterval;