react / webpack ] export 'filename' was not found in './xx'

에러 메세지

export 'filename' was not found in './xx'

브라우저 에러

Uncaught Error: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports.

해결

컴포넌트를 불러올 때

기존 : import { TestComponent } from './test/TestComponent'

수정 : import TestComponent from './test/TestComponent'