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`test` field gives a TS error in Vite 3

See original GitHub issue

Describe the bug

When using with TypeScript upgrading to Vite 3 beta suddenly gives a TypeError for the test field in the vite.config.ts file. Namely that Argument of type '{ test: {}; }' is not assignable to parameter of type 'UserConfigExport'. The vitest types are referenced with the triple slash command and it all work using Vite 2.

Reproduction

https://stackblitz.com/edit/vitest-dev-vitest-9wpbx8?file=vite.config.ts

System Info

System:
    OS: macOS 12.3.1
    CPU: (8) arm64 Apple M1
    Memory: 94.69 MB / 16.00 GB
    Shell: 5.8 - /bin/zsh
  Binaries:
    Node: 16.14.2 - ~/.nvm/versions/node/v16.14.2/bin/node
    Yarn: 1.22.15 - ~/.nvm/versions/node/v16.14.2/bin/yarn
    npm: 8.5.0 - ~/.nvm/versions/node/v16.14.2/bin/npm
  Browsers:
    Brave Browser: 102.1.39.122
    Firefox: 101.0.1
    Safari: 15.4
  npmPackages:
    @vitejs/plugin-vue: ^2.3.3 => 2.3.3 
    vite: 3.0.0-beta.1 => 3.0.0-beta.1 
    vitest: ^0.14.2 => 0.14.2



### Used Package Manager

pnpm

### Validations

- [X] Follow our [Code of Conduct](https://github.com/vitest-dev/vitest/blob/main/CODE_OF_CONDUCT.md)
- [X] Read the [Contributing Guidelines](https://github.com/vitest-dev/vitest/blob/main/CONTRIBUTING.md).
- [X] Read the [docs](https://vitest.dev/guide/).
- [X] Check that there isn't [already an issue](https://github.com/vitest-dev/vitest/issues) that reports the same bug to avoid creating a duplicate.
- [X] Check that this is a concrete bug. For Q&A open a [GitHub Discussion](https://github.com/vitest-dev/vitest/discussions) or join our [Discord Chat Server](https://chat.vitest.dev).
- [X] The provided reproduction is a [minimal reproducible example](https://stackoverflow.com/help/minimal-reproducible-example) of the bug.