[React] 디자인 패턴 (개인기록용) velog.io/@mollang/19.12.05-%EB%A6%AC%EC%95%A1%ED%8A%B8-%EB%94%94%EC%9E%90%EC%9D%B8-%ED%8C%A8%ED%84%B4 Develop/React & React Native 2020.09.19