v1.0 with SW PWA enabled

frontend/node_modules/date-fns/differenceInMonths.mjs

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+import { compareAsc } from "./compareAsc.mjs";
+import { differenceInCalendarMonths } from "./differenceInCalendarMonths.mjs";
+import { isLastDayOfMonth } from "./isLastDayOfMonth.mjs";
+import { toDate } from "./toDate.mjs";
+
+/**
+ * @name differenceInMonths
+ * @category Month Helpers
+ * @summary Get the number of full months between the given dates.
+ *
+ * @description
+ * Get the number of full months between the given dates using trunc as a default rounding method.
+ *
+ * @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 full months
+ *
+ * @example
+ * // How many full months are between 31 January 2014 and 1 September 2014?
+ * const result = differenceInMonths(new Date(2014, 8, 1), new Date(2014, 0, 31))
+ * //=> 7
+ */
+export function differenceInMonths(dateLeft, dateRight) {
+  const _dateLeft = toDate(dateLeft);
+  const _dateRight = toDate(dateRight);
+
+  const sign = compareAsc(_dateLeft, _dateRight);
+  const difference = Math.abs(
+    differenceInCalendarMonths(_dateLeft, _dateRight),
+  );
+  let result;
+
+  // Check for the difference of less than month
+  if (difference < 1) {
+    result = 0;
+  } else {
+    if (_dateLeft.getMonth() === 1 && _dateLeft.getDate() > 27) {
+      // This will check if the date is end of Feb and assign a higher end of month date
+      // to compare it with Jan
+      _dateLeft.setDate(30);
+    }
+
+    _dateLeft.setMonth(_dateLeft.getMonth() - sign * difference);
+
+    // Math.abs(diff in full months - diff in calendar months) === 1 if last calendar month is not full
+    // If so, result must be decreased by 1 in absolute value
+    let isLastMonthNotFull = compareAsc(_dateLeft, _dateRight) === -sign;
+
+    // Check for cases of one full calendar month
+    if (
+      isLastDayOfMonth(toDate(dateLeft)) &&
+      difference === 1 &&
+      compareAsc(dateLeft, _dateRight) === 1
+    ) {
+      isLastMonthNotFull = false;
+    }
+
+    result = sign * (difference - Number(isLastMonthNotFull));
+  }
+
+  // Prevent negative zero
+  return result === 0 ? 0 : result;
+}
+
+// Fallback for modularized imports:
+export default differenceInMonths;