Zod

A complete roadmap for Zod, the TypeScript-first schema declaration and validation library. The series begins with schema definition using z.object() and primitives, parsing with .parse() and .safeParse(), error handling through ZodError and issues, and type inference with z.infer. It covers string formats, unions and discriminated unions, enums, refinements, transformations, coercion, async validation, and the unified error parameter in v4. It then moves into integrations—React Hook Form via zodResolver, Express middleware, environment variable parsing, and JSON Schema conversion—plus Zod Mini, performance, and the v3-to-v4 migration with the codemod.