webpack app/index.js dist/bundle.js 명령을 실행하니...

ARNING in configuration

The 'mode' option has not been set, webpack will fallback to 'production' for this value. Set 'mode' option to 'development' or 'production' to enable defaults for each environment.

You can also set it to 'none' to disable any default behavior. Learn more: https://webpack.js.org/concepts/mode/

ERROR in multi ./app/index.js dist/bundle.js

Module not found: Error: Can't resolve 'dist/bundle.js' in '/Users/imac.suntae/Projects/Z_Study/LearnWebpack/getting-started'

@ multi ./app/index.js dist/bundle.js

이런 오류가 뜹니다.

검색해보니 package.json 에서 scripts부분을 수정하고 명령어도 다른 형식을 실행해야 하던데 어떻게 된건가요?