zod-4

Handle Zod validation errors with unified error API, custom messages, error formatting, and user-friendly display

Integrate Zod v4 with React Hook Form, Next.js, Express, tRPC, and other frameworks for type-safe validation

Complete migration guide from Zod v3 to v4 covering all breaking changes and upgrade patterns

Optimize Zod validation performance with safeParse, bulk array validation, schema reuse, and passthrough patterns

Review Zod schemas for correctness, performance, and v4 best practices

Test Zod schemas comprehensively with unit tests, integration tests, and type tests for validation logic

Write type-safe transformations with Zod including string methods, custom transforms, codecs, and pipelines

Validate code for Zod v4 compatibility by detecting deprecated APIs and ensuring adherence to v4 patterns

Guide to Zod v4 new features including top-level string formats, string transformations, codecs, and stringbool

4 hooks across 3 events