Zod

Introducció

Zod is a TypeScript-first validation library.

Using Zod, you can define schemas you can use to validate data, from a simple string to a complex nested object.

import { z } from "zod/v4";

const User = z.object({
  name: z.string(),
});

// some untrusted data...
const input = { /* stuff */ };

// the parsed result is validated and type safe!
const data = User.parse(input);

// so you can use it with confidence :)
console.log(data.name);