add sameyear fn

lib/helpers/isSameYear.js

@@ -0,0 +1,12 @@
+import { isSameYear as sameYear } from 'date-fns';
+
+/**
+ * The function `isSameYear` checks if two dates are on the same day.
+ * @param {Date} earlierDate - The `earlierDate` parameter represents the date that occurs earlier in time
+ * @param {Date} laterDate - A date representing a later point in time.
+ * when comparing two dates.
+ * @return {boolean}
+ */
+const isSameYear = (earlierDate, laterDate) => sameYear(laterDate, earlierDate, { in: true });
+
+export default isSameYear;