Invalid assignment target in v-model data binding with type assertion when building for production

[kingyue737]

Environment

https://stackblitz.com/edit/github-4n1bjaud

Reproduction

1. Add type assertion in v-model, for example, v-model="foo as any"
2. npm run build

Describe the bug

Error during build:

According to the maintainer of vue vuejs/core#12620 (comment), it may be an issue of unimport. There is no error if ref is imported explicitly

Additional context

No response

Logs

No response

[noootwo]

I do some research, I set a breakpoint during unimport initialization, but it never reached the breakpoint before the program crashed.This error is threw by esbuild, before unimport do anything.

When the ref is not be imported, vue will analysis the data as the setup-maybe-ref, so the result with error will be generated.
So, vue team think unimport should import ref before vue compilation, see vuejs/core#12620.

I try to set the unimport plugin option enforce as 'pre', but the same error occurs.
I think this issue is also related to the packaging process of nuxt, WDYT? @antfu