LXGIC-Studios Validator Generator
You have TypeScript types but need runtime validation. This generates Zod or Yup schemas from your types.
One command. Zero config. Just works.
Quick Start
npx ai-validator ./types/user.ts
What It Does
- Reads TypeScript types
- Generates Zod or Yup schemas
- Matches your type definitions
- Includes helpful error messages
Usage Examples
# Generate from types file
npx ai-validator ./types/user.ts
# Yup instead of Zod
npx ai-validator ./types/product.ts --library yup
Best Practices
- Keep types and validators in sync - regenerate when types change
- Add custom messages - users need clear errors
- Validate at boundaries - API inputs, form data
- Test edge cases - empty strings, nulls, etc.
When to Use This
- Adding validation to existing types
- Keeping types and validators synced
- Migrating between validation libraries
- Learning schema patterns
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-validator --help
How It Works
Parses your TypeScript types and generates equivalent validation schemas. Handles complex types, optional fields, and nested objects.
License
MIT. Free forever. Use it however you want.