zod
https://github.com/colinhacks/zod
TypeScript
TypeScript-first schema validation with static type inference
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- Issues
- Object JIT erros when an async schema is found.
- docs: warns about codec usage in discriminatedUnion
- fix: superRefine() errors surfacing on optional() fields
- fix(v4): prevent superRefine suppression on missing optional fields (#5653)
- Add deprecated target aliases to toJSONSchema types
- intersection (.and(...)) does not run check, superRefine or transform functions (and probably others)
- Invalid discriminator errors in Zod 4 do not list possible options like Zod 3
- z.fromJSONSchema is not supporting circular references (dereferenced schema)
- Allow Registry Reference within z.fromJSONSchema
- `abort: true` in refine does not stop further validations
- Docs
- TypeScript not yet supported