TypeScriptIntermediate

TypeScript Interfaces and Types

Understand TypeScript interfaces, type annotations, and how they improve your code safety.

By CodeForge AI

TypeScript interfaces define the shape of objects, enabling type checking at compile time. They help catch bugs early and serve as documentation for your code. ## What you'll learn - Defining interfaces - Optional and readonly properties - Extending interfaces - Type vs Interface - Using interfaces with functions ## Why use interfaces? - Catch type errors before runtime - Better IDE autocomplete and refactoring - Self-documenting code - Enforce API contracts

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