Valibot
Valibot is an open-source schema library for TypeScript designed to validate unknown data with a focus on bundle size, type safety, and developer experience.
Our verdict
Who it's for
Validate unknown data with confidence using this modular and type-safe schema library for TypeScript.
Who should look elsewhere
Relies on partners and sponsors for funding, which could impact long-term development if not sustained
Pros
- +Significantly reduces bundle size compared to alternatives like Zod (up to 95%)
- +Ensures type safety of unknown data at runtime
- +Open source and free to use under the MIT License
- +Excellent developer experience due to well-designed API
- +Comprehensive test coverage for reliability
Cons
- −Relies on partners and sponsors for funding, which could impact long-term development if not sustained
Key features
- ✓Fully type safe with static type inference
- ✓Modular API design for small bundle size (less than 700 bytes initially)
- ✓Supports validation of almost any TypeScript type
- ✓Includes important validation and transformation helpers
- ✓100% test coverage for source code
- ✓Minimal, readable, and well-thought-out API
Pricing
| Plan | Price | Billing | Notes |
|---|---|---|---|
| Valibot | — | month | — |