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6/19/2026

Structuring TypeScript: Interfaces, Type Aliases, Enums, and Object Types
Short summary
Learn when to use TypeScript interfaces, type aliases, and enums for modeling real-world data. Interfaces describe object shapes with optional/readonly properties and inheritance; type aliases handle primitives and unions flexibly; enums group named constants with readable values. Includes comparison tables and realistic user/order workflow examples.
- •Interfaces describe object shapes with optional/readonly properties and inheritance support
- •Type aliases handle primitives, unions, and combinations more flexibly than interfaces
- •Enums provide named constant groups with human-readable string values preferred for APIs
- •Use interfaces for real-world entities and type aliases for flexible type combinations
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