fix: export default theme type

[Estelle00]

No description provided.

[brc-dd]

Fixes: #483 (comment), #438, #442

x-ref: #484 (comment), #494

[yyx990803]

I realized this file is no longer necessary - you can just do import { DefaultTheme } from 'vitepress'. My bad, I got confused by the type export!

[brc-dd]

I realized this file is no longer necessary - you can just do import { DefaultTheme } from 'vitepress'.

@yyx990803 That's just the DefaultTheme interface, not the actual default theme. One needs to write import DefaultTheme from 'vitepress/dist/client/theme-default' to get the default theme. But that too has no type definitions as vitepress/dist/client/theme-default/index.d.ts is not bundled. Check #494 for a possible fix.

PS: actually the title of this PR is somewhat confusing. It should be something like: "fix: bundle vitepress/theme type definition file".

[yyx990803]

Thanks, #494 is close but the Theme interface is meant as a constraint type instead of the actual type of the default theme. See eabf6d2