feat: add knip plugin

[dreyfus92]

Add knip as peer dependency plugin with feature flags

Implements #41 by integrating knip as an optional peer dependency that runs via npx.

Changes

• Plugin Architecture: knip runs as part of the existing plugin system in analyze command
• Feature Flags: New --features flag controls which analysis tools run:
  • --features unused - runs only knip
  • --features types,publish - runs attw + publint, skips knip
  • No flags = runs all available plugins
• Peer Dependency: knip is not a hard dependency; runs automatically if installed locally/globally
• Local FS Only: knip only runs on local directories, not tarball files

Usage

# Run all analysis (including knip if installed)
npm run cli analyze

# Run only knip analysis
npm run cli analyze --features <file-name>

# Run types + publish analysis (skip knip)
npm run cli analyze --features types,publish

Closes #41

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/e18e/cli/@e18e/cli@45

commit: 6e30495

[43081j]

what's the purpose of this?

the pack type mirrors whats in publint so im surprised this works

[dreyfus92]

the purpose of setting pack = 'none' when a directory is detected is to use LocalFileSystem instead of TarballFileSystem.
the current behavior:
No path provided → pack = 'auto' → packs directory → TarballFileSystem → publint ✅ works
Directory path provided → pack = 'none' → LocalFileSystem → publint ❌ skipped

The inconsistency is that directory paths bypass the packing process while everything else uses tarballs. This is why knip works with directories but publint/attw don't.

"Always pack, separate knip command" would mean:

• Remove the pack = 'none' override for directories
• Always pack directories (like the default behavior)
• Add a separate command/flag for knip analysis that works with local filesystem

so let me know if we should refactor it.

[michaelfaith]

I don't believe which will run on Windows. Is that a concern?

[dreyfus92]

hello @michaelfaith, nice catch, but i don't think it is a concern right now, since we are in early development 😁

[dreyfus92]

also we stumbled upon a big rabbit hole with this one that's why it has become stale.