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!