fix issues that cause .d.ts problems
fix issues that cause .d.ts problems

arshaw/fullcalendar,fullcalendar/fullcalendar,arshaw/fullcalendar,fullcalendar/fullcalendar,oleg-babintsev/fullcalendar,fullcalendar/fullcalendar,kleisauke/fullcalendar,fullcalendar/fullcalendar,oleg-babintsev/fullcalendar,oleg-babintsev/fullcalendar,kleisauke/fullcalendar,arshaw/fullcalendar,arshaw/fullcalendar,kleisauke/fullcalendar,kleisauke/fullcalendar