# Garbage Detection
Review changes in the PRE_COMMIT phase and detect unnecessary code.
## Criteria
For each changed file, decide whether to **keep** or **discard**.
### Discard
1. **Debug output**
- Debug statements like `console.log()`, `print()`, `var_dump()`, `dd()`
- Temporary logging added for debugging purposes
2. **Commented-out code**
- Code that was commented out instead of deleted
- Old code kept "just in case"
3. **Unrequested files**
- Test files not requested by the user
- Changes to unrelated files
4. **Temporary hacks**
- Workarounds with TODO comments
- Dirty code written with the assumption of "fixing later"
5. **Unrelated changes**
- Format-only changes (when not requested)
- Adding/removing blank lines only
- Import order changes only
6. **Unreachable code**
- Dead code branches like `if (false) { ... }`
- Feature flags that are always off
- Code after unconditional `return`/`throw`
7. **Unused imports**
- Imports added during debugging but not used
- Extra imports from copy-paste
### Risk Level
- **SAFE to discard**: Debug output, commented code, unused imports
- **CAREFUL**: Code that might be used via dynamic imports or reflection
- **RISKY (keep)**: Public API, shared utilities, config files
### Keep
1. **Implementation code for the requested feature**
2. **Necessary validation and error handling**
3. **Related type definitions and interface changes**
4. **Requested tests**
5. **Necessary configuration file changes**
## Before Discarding
- [ ] Grep for all references in codebase
- [ ] Check for dynamic imports (string patterns like `import()`)
- [ ] Verify not part of public API or exports
## Notes
- **When in doubt, keep** - The risk of removing necessary code is greater
- **Read the diff in context** - Understand the purpose of each change
- **Check the user's request** - Compare against the original request
## Output Format
```json
{
"reviewed_files": [
{"path": "file.py", "decision": "keep"},
{"path": "debug.log", "decision": "discard", "reason": "Debug output file"}
]
}
```
**reason is required only for discard decisions**
