#Zod

Pasting a JSON sample into a Zod schema generator surfaces four non-obvious algorithm choices: children-first const ordering, z.union vs chained .or, .optional vs .nullish, and named-const-per-object. Walkthrough with code.

Compare schema validation libraries on TypeScript inference, bundle size, performance, and DX. Zod's dominance, Valibot's lean approach, and where Yup still fits.

Why manual validation is a recipe for disaster and how Zod can make your Node.js applications type-safe and robust.

Three TypeScript validators, three different type-system tricks. Same login form. Internals, benchmarks, and where each one breaks down.

Every project starts the same way. You set up Zod, define your form schema, and then spend the next...