Zod 4

[colinhacks]

Announcement post: v4.zod.dev/v4
Release notes / breaking changes: v4.zod.dev/v4/changelog

Summary by CodeRabbit

• New Features

  • Launched a modern documentation site with comprehensive guides, API references, error handling, and migration resources for Zod 4.
  • Added extensive benchmarking tools and scripts comparing Zod versions and alternative validation libraries.
  • Implemented new configuration files for workspace, formatting, linting, and editor support.
  • Introduced new schema methods and validation features, including template literals, advanced string formats, and improved error customization.
  • Added rich ecosystem resource listings with live GitHub star counts and support indicators.
  • Provided new React components for documentation layout, sidebar, headings, featured sponsors, and navigation enhancements.
  • Enhanced CI/CD workflows with updated branch triggers and package manager usage.

• Bug Fixes

  • Updated workflow triggers and package manager commands to ensure compatibility with the latest tooling and branch naming conventions.

• Documentation

  • Replaced legacy documentation with new, structured content covering usage, migration, metadata, ecosystem, and library author guidance.
  • Added detailed API documentation and migration guides for Zod 4, with improved navigation and metadata.
  • Introduced new error formatting and customization documentation.
  • Added comprehensive docs on JSON Schema conversion, metadata registries, and parsing strategies.

• Chores

  • Migrated the project to a pnpm monorepo structure with workspace and package management enhancements.
  • Removed deprecated configuration files, test suites, and legacy documentation.
  • Updated copyright and license information.
  • Switched package manager from Yarn to pnpm across CI and development scripts.

• Refactor

  • Transitioned from legacy tools (Jest, Babel, ESLint, Prettier) to Biome, Vitest, and pnpm.
  • Streamlined and modernized build, test, and linting scripts.
  • Removed or replaced outdated or redundant files and scripts.
  • Simplified internal module exports and reorganized source structure.

• Style

  • Introduced new formatting and linting standards across the codebase.

• Tests

  • Removed legacy test suites and introduced new benchmarking and validation tests for current and future development.