Vetur: TypeScript 3.7 features interpreted as errors

[NicoAiko]

• [x] I have searched through existing issues
• [x] I have read through docs
• [x] I have read FAQ

Info

• Platform: macOS Catalina
• Vetur version: 0.22.6
• VS Code version: 1.40.0

Problem

TypeScript v3.7 introduced some new features, like optional chaining and nullish coalesce.
These changes produce errors for Vetur though.

Reproducible Case

Just create a .vue file with its script being typescript (obviously on v3.7+) and create a function that uses the new features.

[ktsn]

Enable Vetur: Use Workspace Dependencies to let Vetur use 3.7. See https://github.com/vuejs/vetur/issues/1438#issuecomment-551911880