Demerzels-lab Refactor Assistant
Code review yourself before anyone else does. Point this at a file and get specific refactoring suggestions with diffs.
One command. Zero config. Just works.
Quick Start
npx ai-refactor src/utils.ts
What It Does
- Analyzes code for improvement opportunities
- Shows colored diffs for suggested changes
- Focuses on readability and patterns
- Can apply changes automatically
Usage Examples
# See suggestions
npx ai-refactor src/utils.ts
# Apply changes directly
npx ai-refactor src/utils.ts --apply
# Focus on specific area
npx ai-refactor src/api.ts --focus "error handling"
Best Practices
- Review before applying - verify suggestions make sense
- Commit first - have a clean state to diff against
- Focus on one thing - don't refactor everything at once
- Run tests after - make sure nothing broke
When to Use This
- Code review prep
- Cleaning up old code
- Learning better patterns
- Technical debt sprints
Part of the LXGIC Dev Toolkit
This is one of 110+ free developer tools built by LXGIC Studios. No paywalls, no sign-ups, no API keys on free tiers. Just tools that work.
Find more:
- GitHub: https://github.com/LXGIC-Studios
- Twitter: https://x.com/lxgicstudios
- Substack: https://lxgicstudios.substack.com
- Website: https://lxgicstudios.com
Requirements
No install needed. Just run with npx. Node.js 18+ recommended. Needs OPENAI_API_KEY environment variable.
npx ai-refactor --help
How It Works
Reads your file, sends it to GPT-4o-mini for analysis, and shows refactoring suggestions as diffs. Looks at readability, duplication, modern patterns, performance, and type safety.
License
MIT. Free forever. Use it however you want.
Built by LXGIC Studios
- GitHub: github.com/lxgicstudios/refactor-suggest
- Twitter: @lxgicstudios