suretype

Suretype is a ridiculously fast and type-safe JSON schema validator for TypeScript and JavaScript. Current stable version is 3.3.1 (pure ESM, Node >=14.13.1 or >=16.0.0). It compiles validator functions using Ajv, extracts JSON Schema, and deduces TypeScript types at compile-time. Key differentiators: ~70x faster than Joi, ~100x faster than Superstruct, ~2500x faster than Zod; supports full JSON Schema but nothing beyond; errors prettified with awesome-ajv-errors; integrates with typeconv for conversion to/from JSON Schema, Open API, TypeScript types, or GraphQL. Works in browsers.