When scaffolding new app, TypeScript Error in vitest.config.ts

[dustindowns]

When scaffolding a new app with TypeScript and Vitest using npm init vue@latest, there's a TypeScript error in vitest.config.ts related with the usage of mergeConfig.

Argument of type 'UserConfigExport' is not assignable to parameter of type 'UserConfig | Promise'.
Type 'UserConfigFn' is not assignable to type 'UserConfig | Promise'.ts(2345)

It seems the actual types in use for the "mergeConfig" arguments are UserConfigExport, but "mergeConfig" is expecting them to be of type UserConfig.

Here are the prompt selections:

After installing dependencies, the following error shows up in vitest.config.ts:

[haoqunjiang]

Workaround:

1. Update Vite to the latest version
2. Then apply this patch: b948832