4 articles
Master Zod for runtime type validation in TypeScript. Covers schema definition, parsing, custom validators, Express middleware integration, error formatting, and Zod 4 features.
Learn how to validate, sanitize, and enforce structured output from LLMs in production. Covers schema validation, retry with feedback, content safety, and graceful fallbacks.
Master Zod for runtime validation of untrusted input. Learn schema patterns, parse vs safeParse, transformations, discriminated unions, environment validation, middleware, and API error formatting.
Zod v4 brings 20x performance improvements, `z.file()` validation, and `z.pipe()` for composable transforms. Learn what changed from v3 and how to migrate.