Zod v4

Rule-first Zod v4.4.3 guidance for TypeScript. Start with the highest-risk matching rule, then load the linked reference only when deeper API detail is needed.

Quick Start

bun add zod@^4.4.3

import { z } from "zod";

const User = z.object({
  name: z.string().min(1, { error: "Required" }),
  email: z.email({ error: "Invalid email" }),
});