fix error: dont use arguments in arrow func
fix error: dont use arguments in arrow func

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