Zod

Zod validates data at runtime and infers TypeScript types from your schemas. Define the shape once, get both validation and types.

Overview

• What: Schema validation library for TypeScript/JavaScript
• Install: npm install zod
• Key feature: z.infer<typeof Schema> gives you the TypeScript type for free
• Use cases: Form validation, API response validation, environment variable parsing
• Size: ~13KB minified

Contents

• Concepts - How Zod works
  • Schemas - Defining shapes, nesting, composing
• Quickstart - Get started
  • Basic Usage - Define, validate, infer types
• Deep Dives - Advanced patterns
• Notes - Tips and gotchas

Resources

• Zod docs
• Zod GitHub