준비 환경 VSCode prettier plugin 설치 eslint plugin 설치 eslint-config-airbnb 설치 $ yarn add eslint-config-airbnb yarn add v1.22.4 [1/4] 🔍 Resolving packages... [2/4] 🚚 Fetching packages... [3/4] 🔗 Linking dependencies... warning " > @testing-library/user-event@12.2.0" has unmet peer dependency "@testing-library/dom@>=7.21.4". ...중략... info All dependencies ├─ eslint-config-airbnb-base@14.2.0 └─ eslint-c..