Structuring TypeScript: Interfaces, Type Aliases, Enums, and Object Types
You've learned TypeScript's primitive types and the basics of type inference here. Now it's time to model real-world data — users, orders, API responses, configuration objects. That's where interfaces, type aliases, and enums come in.
These three features are what make TypeScript genuinely powerful for building applications. Let's dig in.
Object Types: Describing the Shape of Data
Before we get to interfaces, let's understand object types. When you want to describe the structure of an object, you define what properties it has and what types those properties are:
