zod
https://github.com/colinhacks/zod
TypeScript
TypeScript-first schema validation with static type inference
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- Issues
- feat(v4): add z.abaRoutingNumber() string format with ABA checksum
- `z.jwt()` rejects valid tokens whose header contains `-` or `_`
- Avoid decoded-string allocation in z.base64() validation for large inputs
- toJSONSchema({ unrepresentable: "any" }) silently rounds bigint literals outside the safe-integer range
- Default with partial in zod 4
- Input type is not inferred in error function of .refine()
- Non-English locales lose Infinity/-Infinity in "invalid type" messages
- Rollup tries to interpret references to `@__PURE__` annotations in Zod's comments
- IMO number validator
- Expose ZodFunction `meta` from .implement() result
- Docs
- TypeScript not yet supported