TypeScript Migration Helper
JS → TS step-by-step
1. Paste Code
2. Type Suggestions
3. tsconfig
4. Checklist
5. Export
Paste Your JavaScript
Analyze & Suggest Types →
Type Suggestions
JavaScript (Original)
TypeScript (Suggested)
← Back
Generate tsconfig →
tsconfig.json Generator
Project Type
Node.js
React
Next.js
Express
Library
Strictness
Strict (recommended)
Moderate
Relaxed (easy migration)
Copy tsconfig
Migration Checklist →
Migration Checklist
Type Utilities Reference
Export Report →
Migration Report
Copy Report
Download .md