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---
name: deps-unused
description: Finds packages in package.json that are not actually used in the codebase
user-invocable: true
allowed-tools: Bash Read Edit
effort: low
---
## Find Unused Dependencies
1. Run automated analysis:
```bash
npx depcheck 2>/dev/null | head -40
npx unimported 2>/dev/null | head -40
```
2. For each flagged package, manually verify:
```bash
grep -r "require\|from\|import" src/ --include="*.ts" --include="*.js" | grep "package-name" | head -5
```
3. Watch for false positives:
- Packages used in config files (`.eslintrc`, `jest.config`)
- `@types/*` packages (used by TypeScript compiler)
- Peer dependencies (required by other packages)
- Dev tools used in scripts
4. Classify each:
- **Safe to remove**: confirmed unused, no config reference
- **Keep**: used in config or indirectly
- **Investigate**: uncertain
5. For safe removals, show the `npm uninstall` commands. Ask for confirmation before running.
6. Estimate bundle size savings.
