How to integrate FullCalendar v 4.4.2+ to erpnext

Hi everybody.
FullCalendar v 3.4 (current version in frappe) not supporting locals properly and i need to integrate FullCalendar v 4.4.2+. How i should that? please help me…

FullCalendar 4 and 5 use significantly API and DOM interfaces, so upgrading will require more than just dropping in the new library. It’d be a worthwhile thing to do, but it would require some coding.

The place to start would probably be Frappe’s calendar abstraction, found here:

It’s likely that some CSS would need to be updated too, but I’m not sure on that.

thanks for answering. Could you explain me more and tell me the story?!