I built a CLI that migrates your JS codebase to TypeScript automatically using AI

The Problem Migrating a JavaScript codebase to TypeScript is painful. I spent 3 weeks doing it manually and thought — there has to be a better way. The Solution I built RepoSurgeon — a CLI tool that does it automatically. npm install -g reposurgeon reposurgeon migrate . That's it. Your TypeScript project appears in ./reposurgeon-output with a full diff report. Supports 17 AI Providers The best part — it works with whatever AI key you have: OpenAI, Claude, Gemini, Groq (free!), Mistral DeepSeek, xAI Grok, OpenRouter Ollama, LM Studio, Jan (local & free!) Just set one key in .env and run. Try It Free No credit card needed: GitHub github.com/nikeshsundar/reposurgeon Star it if you find it useful!