Interval splitAt produces an invalid interval during DST change

[zub0r]

Describe the bug
Interval splitAt produces an invalid interval during DST change

To Reproduce
https://stackblitz.com/edit/luxon-demos-tpff1z?file=index.ts

Actual vs Expected behavior
Interval splitAt should produce valid intervals during DST change

• OS: Ubuntu
• Browser Chrome
• Luxon version 3.4.3
• Your timezone Europe/Bratislava

[diesieben07]

This was already fixed by #1524, the fix will be in the next version of Luxon.
Until then you can work around this bug by converting all split-points to UTC:

const interval = Interval.fromISO('2023-10-29T01:00:00.000+02:00/2023-10-29T04:00:00.000+01:00');
const cutpoints = interval.splitBy({ hour: 1 }).map((i) => i.start.toUTC()); // <== Converting to UTC here
const cuts = interval.splitAt(...cutpoints);