ERROR Pre-transform error: [@vue/compiler-sfc] Failed to resolve extends base type. 6:51:55 PM
If this previously worked in 3.2, you can instruct the compiler to ignore this extend by adding /* @vue-ignore / before it, for example:
interface Props extends / @vue-ignore */ Base {}
Note: both in 3.2 or with the ignore, the properties in the base type are treated as fallthrough attrs at runtime.