Vitest should install correct ui/browser package versions via CLI

[yannbf]

Describe the bug

When running tests with specific flags which the project is not ready for, e.g. --ui or --browser, the CLI detects the need to install such dependencies:

However, the dependencies don't follow the version of the CLI. In my project, I'm using vitest: 2.0.0-beta.9 and when prompted to install @vitest/browser, I end up getting latest (1.6.0). This causes further issues as the packages won't play nicely if they differ in versions, especially major versions.

It would be nice if the code which installs dependencies, if such dependencies are vitest ones e.g. @vitest/browser or @vitest/ui, that they use the same version of the installed Vitest CLI:

vitest/packages/vitest/src/node/packageInstaller.ts

Line 43 in 52d545b

await (await import('@antfu/install-pkg')).installPackage(dependency, { dev: true })

Reproduction

• Create any vitest project using a specific, non-latest version
• Run vitest --browser
• Get prompted, see the installed version being different than the Vitest CLI

Used Package Manager

npm

Validations

• Follow our Code of Conduct
• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Check that this is a concrete bug. For Q&A open a GitHub Discussion or join our Discord Chat Server.
• The provided reproduction is a minimal reproducible example of the bug.

[AriPerkkio]

This is also an issue with code coverage packages. As we (intentionally) require all Vitest packages to be on same version, it's not guaranteed that vitest@1.2.0 and @vitest/<package>@1.5.0 work together. When auto-installing prompted coverage packages while running older versions of Vitest, you may end up in a situation where newer version @vitest/coverage-* is installed.