[react] React Hook useEffect has a missing dependency는 왜 표시되는 걸까?

1. 문제상황 1) 문제 파악 React 개발 중에 아래와 같은 경고(warning)를 많이 만나봤을 것이다. [eslint] src/App.js Line 11:6: React Hook useEffect has a missing dependency: 'counter'. Either include it or remove the dependency array react-hooks/exhaustive-deps Search for the keywords to learn more about each warning. To ignore, add // eslint-disable-next-line to the line before. WARNING in [eslint] src/App.js Line 11:6:..