wip:milestone 0 fixes

control-plane-ui/node_modules/date-fns/differenceInCalendarMonths.mjs

@@ -0,0 +1,37 @@
+import { toDate } from "./toDate.mjs";
+
+/**
+ * @name differenceInCalendarMonths
+ * @category Month Helpers
+ * @summary Get the number of calendar months between the given dates.
+ *
+ * @description
+ * Get the number of calendar months between the given dates.
+ *
+ * @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).
+ *
+ * @param dateLeft - The later date
+ * @param dateRight - The earlier date
+ *
+ * @returns The number of calendar months
+ *
+ * @example
+ * // How many calendar months are between 31 January 2014 and 1 September 2014?
+ * const result = differenceInCalendarMonths(
+ *   new Date(2014, 8, 1),
+ *   new Date(2014, 0, 31)
+ * )
+ * //=> 8
+ */
+export function differenceInCalendarMonths(dateLeft, dateRight) {
+  const _dateLeft = toDate(dateLeft);
+  const _dateRight = toDate(dateRight);
+
+  const yearDiff = _dateLeft.getFullYear() - _dateRight.getFullYear();
+  const monthDiff = _dateLeft.getMonth() - _dateRight.getMonth();
+
+  return yearDiff * 12 + monthDiff;
+}
+
+// Fallback for modularized imports:
+export default differenceInCalendarMonths;