chore: Code cleanup

Author: Jasenkoo

src/VueDatePicker/utils/timezone.ts

@@ -43,6 +43,6 @@ export const getTimezoneOffset = (timezone?: string, localDate?: Date) => {
     const utcDate = new Date(date.toLocaleString('en-US', { timeZone: 'UTC' }));
     const specificDate = new Date(date.toLocaleString('en-US', { timeZone: timezone }));
     const dateToOffset = isDST(localDate ?? specificDate) ? specificDate : (localDate ?? specificDate);
-    const dstOffset = dateToOffset!.getTimezoneOffset() / 60;
+    const dstOffset = dateToOffset.getTimezoneOffset() / 60;
     return (+utcDate - +specificDate) / (1000 * 60 * 60) - dstOffset;
 };

tests/unit/behaviour.spec.ts

@@ -95,7 +95,6 @@ describe('It should validate various picker scenarios', () => {
     it('Should not switch calendars in 1 month range with multi-calendars enabled (#472)', async () => {
         const start = set(new Date(), { month: 5 });
         const dp = await openMenu({ multiCalendars: true, range: true, startDate: start });
-        // const firstDate = resetDateTime(start);
         const end = set(start, { month: getMonth(addMonths(start, 1)), date: 15 });
 
         const firstDateEl = getCalendarCell(dp, start);