Zren
commented
6 years ago That's not the only check for == 'owner' but thanks for bringing it to my attention!
https://developers.google.com/google-apps/calendar/v3/reference/calendarList mentions it's just the owner and writer that have write permissions.
I'll be adding another check here in a separate commit after the merge.
I share a family calendar and I needed to include external calendars where the current user has 'writer' role, not just 'owner'. I thought this may be useful for other users too.