React은(는) UMD 전역을 참조하지만 현재 파일은 모듈입니다. 대신 가져오기를 추가해보세요. 오류해결 현상react component 내에 작성된 JSX 표현식에서 에러가 발생했다 stackoverflow 댓글에서 해결 방법을 찾았다https://stackoverflow.com/questions/64656055/react-refers-to-a-umd-global-but-the-current-file-is-a-module 'React' refers to a UMD global, but the current file is a moduleI updated my project to create react app 4.0, and I'm slowing moving over my files to TypeScri..