Zod

Complete Zod validation library documentation. Use when working with Zod schema validation, TypeScript type inference, form validation, API validation, error handling, or data parsing. Covers schema definition, refinements, transforms, error customization, and ecosystem integrations.

Testing patterns for Zod schemas using Jest and Vitest. Covers schema correctness testing, mock data generation, error assertion patterns, integration testin...

Validate data with schemas across languages and formats. Use when defining JSON Schema, using Zod (TypeScript) or Pydantic (Python), validating API request/response shapes, checking CSV/JSON data integrity, or setting up data contracts between services.

Build type-safe database queries with Drizzle ORM patterns.

Validate URLs and JSON schemas against format rules.

Detect and fix TypeScript error handling anti-patterns with state persistence and approval workflows. Use when scanning a codebase for silent error failures,...