zod
https://github.com/colinhacks/zod
TypeScript
TypeScript-first schema validation with static type inference
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- Issues
- zod4: better usable discriminatedUnions
- Branding gets dropped in zod v4 from transforms and pipes
- Inferred typescript types of schema union combined with intersection do not match validation rules
- Add support for custom nanoid sizes
- feat: support validating circular objects
- Fix Zod lazy cyclical mutual recursion
- Discriminated Union based on nested object property?
- Denial of service with array validations?
- Intersection between `z.object` and `z.record` incorrectly merges validators
- Unable to create an object with readonly property
- Docs
- TypeScript not yet supported