Zod 4 schema validation patterns. Trigger: When creating or updating Zod v4 schemas for validation/parsing (forms, request payloads, adapters), including v3 -> v4 migration patterns.
npxskills add prowler-cloud/prowler--skill zod-4Loading…
// ❌ Zod 3 (OLD)
z.string().email()
z.string().uuid()
z.string().url()
z.string().nonempty()
z.object({ name: z.string() }).required_error("Required")
// ✅ Zod 4 (NEW)
z.email()
z.uuid()
z.url()
z.string().min(1)
z.object({ name: z.string() }, { error: "Required" })
import { z } from "zod";
// Primitives
const stringSchema = z.string();
const numberSchema = z.number();
const booleanSchema = z.boolean();
const dateSchema = z.date();
// Top-level validators (Zod 4)
const emailSchema = z.email();
const uuidSchema = z.uuid();
const urlSchema = z.url();
// With constraints
const nameSchema = z.string().min(1).max(100);
const ageSchema = z.number().int().positive().max(150);
const priceSchema = z.number().min(0).multipleOf(0.01);
const userSchema = z.object({
id: z.uuid(),
email: z.email({ error: "Invalid email address" }),
name: z.string().min(1, { error: "Name is required" }),
age: z.number().int().positive().optional(),
role: z.enum(["admin", "user", "guest"]),
metadata: z.record(z.string(), z.unknown()).optional(),
});
type User = z.infer<typeof userSchema>;
// Parsing
const user = userSchema.parse(data); // Throws on error
const result = userSchema.safeParse(data); // Returns { success, data/error }
if (result.success) {
console.log(result.data);
} else {
console.log(result.error.issues);
}
// Arrays
const tagsSchema = z.array(z.string()).min(1).max(10);
const numbersSchema = z.array(z.number()).nonempty();
// Records (objects with dynamic keys)
const scoresSchema = z.record(z.string(), z.number());
// { [key: string]: number }
// Tuples
const coordinatesSchema = z.tuple([z.number(), z.number()]);
// [number, number]
// Simple union
const stringOrNumber = z.union([z.string(), z.number()]);
// Discriminated union (more efficient)
const resultSchema = z.discriminatedUnion("status", [
z.object({ status: z.literal("success"), data: z.unknown() }),
z.object({ status: z.literal("error"), error: z.string() }),
]);
// Transform during parsing
const lowercaseEmail = z.email().transform(email => email.toLowerCase());
// Coercion (convert types)
const numberFromString = z.coerce.number(); // "42" → 42
const dateFromString = z.coerce.date(); // "2024-01-01" → Date
// Preprocessing
const trimmedString = z.preprocess(
val => typeof val === "string" ? val.trim() : val,
z.string()
);
const passwordSchema = z.string()
.min(8)
.refine(val => /[A-Z]/.test(val), {
message: "Must contain uppercase letter",
})
.refine(val => /[0-9]/.test(val), {
message: "Must contain number",
});
// With superRefine for multiple errors
const formSchema = z.object({
password: z.string(),
confirmPassword: z.string(),
}).superRefine((data, ctx) => {
if (data.password !== data.confirmPassword) {
ctx.addIssue({
code: z.ZodIssueCode.custom,
message: "Passwords don't match",
path: ["confirmPassword"],
});
}
});
// Optional (T | undefined)
z.string().optional()
// Nullable (T | null)
z.string().nullable()
// Both (T | null | undefined)
z.string().nullish()
// Default values
z.string().default("unknown")
z.number().default(() => Math.random())
// Zod 4: Use 'error' param instead of 'message'
const schema = z.object({
name: z.string({ error: "Name must be a string" }),
email: z.email({ error: "Invalid email format" }),
age: z.number().min(18, { error: "Must be 18 or older" }),
});
// Custom error map
const customSchema = z.string({
error: (issue) => {
if (issue.code === "too_small") {
return "String is too short";
}
return "Invalid string";
},
});
import { useForm } from "react-hook-form";
import { zodResolver } from "@hookform/resolvers/zod";
const schema = z.object({
email: z.email(),
password: z.string().min(8),
});
type FormData = z.infer<typeof schema>;
function Form() {
const { register, handleSubmit, formState: { errors } } = useForm<FormData>({
resolver: zodResolver(schema),
});
return (
<form onSubmit={handleSubmit(onSubmit)}>
<input {...register("email")} />
{errors.email && <span>{errors.email.message}</span>}
</form>
);
}
Create or update AgentSkills. Use when designing, structuring, or packaging skills with scripts, references, and assets.
Create or update AgentSkills. Use when designing, structuring, or packaging skills with scripts, references, and assets.
Set up and use 1Password CLI (op). Use when installing the CLI, enabling desktop app integration, signing in (single or multi-account), or reading/injecting/running secrets via op.
CLI to manage emails via IMAP/SMTP. Use `himalaya` to list, read, write, reply, forward, search, and organize emails from the terminal. Supports multiple accounts and message composition with MML (MIME Meta Language).
Create or update AgentSkills. Use when designing, structuring, or packaging skills with scripts, references, and assets.
Create or update AgentSkills. Use when designing, structuring, or packaging skills with scripts, references, and assets.
Set up and use 1Password CLI (op). Use when installing the CLI, enabling desktop app integration, signing in (single or multi-account), or reading/injecting/running secrets via op.
CLI to manage emails via IMAP/SMTP. Use `himalaya` to list, read, write, reply, forward, search, and organize emails from the terminal. Supports multiple accounts and message composition with MML (MIME Meta Language).