Zod

What is Zod?

A TypeScript-first schema declaration and validation library that provides static type inference and runtime validation. Allows you to define schemas to validate data, ensuring type safety and reducing runtime errors. Features zero external dependencies, works seamlessly in both Node.js and modern browsers, and provides excellent TypeScript integration. Powers type-safe applications for companies and developers worldwide. Known for its developer-friendly API, excellent error messages, and seamless integration with TypeScript.

When to use it

• Perfect for validating API responses, form inputs, environment variables, and any data that needs runtime validation with TypeScript type safety.
• Ideal when you need to ensure data conforms to expected shapes at runtime while maintaining type safety at compile time.
• Excellent for building type-safe APIs, validating user input, and ensuring data integrity throughout your application.
• Commonly used with React Hook Form, tRPC, and any TypeScript application requiring validation.

When NOT to use it

• Non-TypeScript projects - Zod is designed for TypeScript integration
• When you need runtime validation only - Yup or Joi work without TypeScript
• Very simple validation needs - manual checks might be sufficient
• When you prefer class-based validation - class-validator offers different approach

Related Technologies

More in Tool

Learning Resources