`nuxt doctor`

[danielroe]

would be handy to have a command to diagnose issues. It could include utilities to resolve package dependency issues, such as:

1. outdated versions of unjs utils (defu, untyped)
   Error: "defuFn is not a function" in 3.0.0-rc.9-xx nuxt#14768
   rc.6 to rc.7 ERROR Cannot start nuxt: nuxtCtx.tryUse is not a function  nuxt#14538
2. nuxt 2 modules in dep list (even if not in nuxt.config)
   https://github.com/nuxt/nuxt.js/issues/14945
3. monorepo hoisting issues (though workspaceDir nuxt#11074 implementation should have dealt with some of this)
4. mismatched (or multiple) versions of vue deps
   [RC 9] [RC 10] Cannot read properties of undefined (reading 'modules') when vue is installed in parent dir nuxt#14952
5. incorrect casing in nuxt folders (on a case-insensitive file system)

[pi0]

I had been working on nuxt audit module previously (trying to find the code). It might be good idea to be developed as an ad-hoc module. It was mainly purposed for generic audit (not dependency related issues). Dependency related issues should be handled with nuxi upgrade IMO (and nuxi install maybe sometime later).

[TheAlexLichter]

Moving this to CLI ☺️