zod-docs

Zod email validation uses the `.email()` method on a string schema. Define a schema with `z.string().email()` to enforce email format, then parse user input against it to catch validation errors before processing.

Zod returns detailed error objects when validation fails. Catch errors by checking the result's success property, then access the issues array to extract field-specific messages and codes for user-friendly error handling.

Zod supports nested objects, arrays, unions, and refinements for complex schemas. Compose schemas using `z.object()`, `z.array()`, and `.refine()` to validate relationships between fields and apply custom logic beyond primitive type checking.

Yes, Zod integrates seamlessly with tRPC. Define input and output schemas directly in procedure definitions using `.input(zodSchema)` and `.output(zodSchema)` to enforce type safety across your API layer automatically.

Use `z.infer<typeof schema>` to extract TypeScript types directly from Zod schemas. This keeps your type definitions and validation logic synchronized, eliminating duplicate type declarations.

Yes, Zod transforms data using `.transform()` and `.pipe()` methods. Apply transformations like trimming strings or converting dates during validation to normalize input before your application processes it.