TS Error with your on-site example library '@internationalized/date' in 3.5.5 version.

[uigywnkiub]

The error - Type 'CalendarDate' is not assignable to type 'DateValue'.
Type 'CalendarDate' is not assignable to type 'ZonedDateTime'.
Property '#private' in type 'CalendarDate' refers to a different member that cannot be accessed from within type 'ZonedDateTime'.ts(2322)
On 3.5.4 all was good.

const toCalendarDate = (date: Date) => {
  return new CalendarDate(getYear(date), getMonth(date) + 1, getDate(date))
}

// startOfMonth() and startOfToday() functions are from 'date-fns'

 const [selectedDate, setSelectedDate] = useState<RangeValue<DateValue>>({
    start: toCalendarDate(startOfMonth(startOfToday())),
    end: toCalendarDate(endOfMonth(endOfToday())),
  })