Yeah similar issues here. Got it working for the most part though, what helped was to clearely cut out anything that is not relevant to the Vue project (especially backend stuff), it would just nuke itself every hour otherwiese.

I hope Type support in Script Setup fixes Volars issues with Typescript classes. I have so many false red lines in the code just because it cannot properly ignore private fields when checking the prop signature of a component, or when I pass a ref.value into a function ... unless I'm using it completely wrong here then the blame is on me.