type-safe-form-validation

Runtime form validation with TypeScript uses Zod to define schemas that generate compile-time types and validate data at runtime. Define a Zod schema, infer its TypeScript type, and validate form submissions on both client and server to catch errors before they reach your database or API.

Yes. A single Zod schema serves as your source of truth for client-side form validation, server-side form handling, and API request/response validation. This eliminates duplicate validation logic and keeps types synchronized across your application.

Zod validation errors can be transformed into user-friendly messages using helper functions that map errors to form fields. The schema-driven approach ensures consistent error formatting across all forms without manual error handling in each component.

Composable Zod schemas let you build reusable validation pieces and combine them into larger schemas without repeating logic. This approach scales validation across multiple forms and API endpoints while maintaining a single, maintainable source of truth.

No. The same Zod schema validates both API requests and responses, ensuring end-to-end type safety. This prevents runtime surprises from unexpected response shapes and keeps your API contract tightly coupled to your type definitions.