Typify: Automated JavaScript to TypeScript Conversion Made Simple
Migrate JavaScript projects to TypeScript effortlessly with Typify - the intelligent CLI tool that handles type annotations while preserving your existing code structure.
🚀 Key Features
Smart Type Inference
- 50+ Common Patterns Detected (Express, React, Axios, Jest, MongoDB, TypeORM, Sequelize)
- Context-Aware Analysis Database connections, API clients, error handling
- Modern TS Support Generics, union types, type guards
Zero Friction Conversion
- 🔄 Automatic
require()→importconversion - 🛡️ Var → Let/Const transformation
- 📦 Preserves comments & code structure
Ecosystem Ready
- ⚡ Auto-adds necessary type imports
- 🧩 Works with existing TS configs
- 🚦 Gradual adoption support
⚙️ Under the Hood
Powered by Babel's AST parser, Typify:
- Analyzes code patterns at scale
- Maps JS idioms to TS equivalents
- Generates precise type annotations
- Maintains original functionality
✅ Why Developers Love Typify
- 85% reduction in manual typing
- 100% compatibility with TS ecosystem
- Minutes instead of hours for migration
⚠️ Current Limitations
- Complex generics need manual polish
- AWS SDK v2 requires separate types
- Custom middleware needs refinement
Ready to type-safe your codebase?
👉 Get Started on npm 👈
Typify: Because your JS deserves TS love 💙
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