api-and-interface-design

REST API design relies on principles like Hyrum's Law and the One-Version Rule to ensure stability. By applying contract-first design, you create robust APIs with consistent error handling and boundary validation.

To design a GraphQL endpoint with consistent error handling, apply contract-first design guidelines. This approach ensures inputs are validated effectively at boundaries, maintaining robust and well-documented API contracts.

Yes, applying these interface design guidelines requires knowledge of TypeScript and API design principles. It provides specific TypeScript interface patterns and naming conventions to structure your module boundaries effectively.

The best way to validate inputs at API boundaries is through contract-first design. This method enforces strict interface agreements before implementation, ensuring data integrity and consistent error handling across REST and GraphQL APIs.

You should use contract-first design for module boundaries when developing public interfaces or new APIs. It prevents breaking changes by defining strict contracts and validation rules before writing the underlying implementation logic.