Prerequisites

• I'm using the latest version
• I've read the relevant documentation
• I've searched for existing issues
• I've checked the list of known issues
• I've read the issue reproduction guide

Reproduction url

https://stackblitz.com/edit/github-zgkdats5

Reproduction access

• I've made sure the reproduction is publicly accessible

Description of the issue

Hello,

since v6.21.0 using nuxt test-utils' defineVitestProject in vitest.config.ts to setup the nuxt test environment results in knip listing a few packages as "Unlisted Dependencies". Those packages are dependencies of dependencies, e.g. "@iconify/vue" as a dependency of "@nuxt/ui" (which is a direct dependency of the project).

The vitest.config.ts is set-up as described in the nuxt docs here: https://nuxt.com/docs/4.x/getting-started/testing#setup. If I comment out the await defineVitestProject part, knip no longer marks those dependencies as unlisted.

In the repro only "@iconify/vue" is listed, but in my real project the same set-up causes more "Unlisted Dependency" warnings for packages like "@unovis/vue", "@unovis/ts" and "vue-chrts".

Note: The unlisted dependency warning for "vitest-environment-nuxt" was showing up in other versions as well and is unrelated to this new behaviour.

Analyzing workspace…
Unlisted dependencies (2)
vitest-environment-nuxt  vitest.config.ts
@iconify/vue             vitest.config.ts