Individual skill
deprecation-and-migration
Use when removing old APIs, migrating to new patterns, or cleaning up legacy code — treats code as liability and follows a structured removal process
skills/development/deprecation-and-migration/SKILL.md
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# Deprecation and Migration
## When to Use
- API/함수를 제거하거나 교체할 때
- 라이브러리 또는 패턴을 마이그레이션할 때
- 레거시 코드를 점진적으로 제거할 때
- Breaking change를 포함한 메이저 버전 릴리즈 준비
> 코드는 자산이 아닌 **부채**다. 유지해야 할 코드가 많을수록 비용이 증가한다.
## Prerequisites
- 현재 사용처 파악 (`grep -rn "deprecated_api"`)