@wuyuchentr/package-check

Scan your project to find unused dependencies. Helps keep node_modules lean.

Install

npm install -g @wuyuchentr/package-check

Usage

# Scan current directory
package-check

# Scan a specific project
package-check /path/to/project

# Or use npx
npx @wuyuchentr/package-check

Example output

Found 3 unused dependencies out of 42:

  lodash (devDependency)
  moment
  @types/express

If all dependencies are used, it exits with code 0.

How it works

1. Reads package.json to get all declared dependencies
2. Recursively scans .js/.ts/.jsx/.tsx/.vue/.svelte/.mjs files (skipping node_modules and .git)
3. Extracts all import, require(), import(), and export from statements
4. Cross-references declared vs used dependencies

Notes

• @types/xxx packages are automatically excluded if xxx is found in use.
• Relative imports are always ignored.
• It only scans static import strings — dynamic expressions like require(`pkg-${x}`) are not detected.