This skill provides specialized guidance for structuring functional applications using the Ports and Adapters (Hexagonal) pattern. It helps developers maintain a 'pure core' of domain logic that is isolated from external side effects like databases, file systems, or third-party APIs. By utilizing function type signatures as ports and dependency injection via partial application or the Environment pattern, this skill enables the creation of modular, maintainable, and highly testable codebases. It is particularly useful for teams looking to move away from stateful service objects toward predictable, transformation-based software design.
주요 기능
01Dependency injection through partial application and Reader patterns
02Error-tracked pipeline composition for domain workflows
03Mock-free unit testing strategies for business logic
04Pure core and side-effect shell separation (Sandwich Pattern)
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06Port definition using function type signatures and aliases
사용 사례
01Implementing testable domain logic independent of external infrastructure
02Architecting complex business workflows using functional pipelines
03Designing modular backend services with clear architectural boundaries