webcoderspeed.com
4 articles
Extract reliable structured data from LLMs using JSON mode, Zod validation, and intelligent retry logic to eliminate parsing failures and hallucinations.
Stop treating process.env.X as a string | undefined. Use T3 Env and Zod to validate environment variables at startup with compile-time type safety.
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.