Is this skill compatible with React Hook Form?

Yes, it includes specific implementation guides for using the zodResolver with React Hook Form for seamless frontend validation.

Does it support data transformation during validation?

Absolutely. It covers .transform() for modifying data, .preprocess() for early cleanup, and z.coerce for converting types like strings to numbers or dates.

Can this skill help me generate TypeScript types?

Yes, it provides patterns for using z.infer to automatically extract TypeScript types from your runtime Zod schemas, ensuring a single source of truth.

What are the primary breaking changes in Zod 4?

Zod 4 introduces top-level validators like z.email() and z.uuid() instead of chaining them off z.string(), and updates the object error syntax to use an 'error' property.

How does it handle complex conditional validation?

It utilizes refinements and superRefine patterns to handle cross-field validation, such as checking if password and confirmPassword fields match.

Zod 4 Validation Patterns

Name: Zod 4 Validation Patterns
Author: JantonioFC

byJantonioFC

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Desarrollo de API

Implements robust TypeScript schema validation using Zod 4 patterns and modernizes legacy Zod 3 syntax.

This skill provides comprehensive guidance for implementing Zod 4, the industry-standard TypeScript-first schema declaration and validation library. It assists developers in leveraging the latest V4 syntax—such as top-level validators for emails and UUIDs—while providing clear migration paths from Zod 3. Whether you are building complex object transformations, handling data coercion, or integrating with React Hook Form, this skill ensures your application maintains high type safety and provides clear, actionable validation errors.

Características Principales

01Advanced schema refinements and custom error mapping

02Type-safe integration with React Hook Form and TypeScript inference

03Implementation of top-level validators for emails, UUIDs, and URLs

042 GitHub stars

05Data transformation and type coercion patterns

06Automatic migration of Zod 3 breaking changes to Zod 4 syntax

Casos de Uso

01Upgrading legacy TypeScript projects from Zod 3 to Zod 4

02Implementing complex multi-step form validation in React applications

03Building type-safe API request and response validation layers

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add jantoniofc/skillsbank zod-4

For use in Claude.ai and ChatGPT