serviceworker

Question

import React from ' react '; import ReactDOM from ' react-dom '; import ' ./index.css '; import App from ' ./App '; import { Provider } from ' react-redux '; import reportWebVitals from ' ./reportWebVitals '; import { applyMiddleware , createStore } from ' redux '; import promiseMiddleware from ' redux-promise '; import ReduxThunk from ' redux-thunk '; import Reducer from ' ./_reducers ' const createStoreWithMiddleware = applyMiddleware (promiseMiddleware , ReduxThunk)(createStore) ; ReactDOM . render ( < Provider store = { createStoreWithMiddleware (Reducer , window . __REDUX_DEVTOOLS_EXTENSION__ && window . __REDUX_DEVTOOLS_EXTENSION__ () ) } > < App /> , document . getElementById ( ' root ' ) ) ; // If you want to start measuring performance in your app, pass a function // to log results (for example: reportWebVitals(console.log)) // or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals reportWebVitals () ; 저는 강사님 소스코드랑 다르게 serviceWoker가 아니라 reportwebVitals가 import 문이랑 맨 밑에도 있는데 뭐가 문제고 어떻게 해야 하죠..?

TaeHyeon Kim · Answer

구글링해보니까 create-react-app 버전이 올라가면서 바꼈다고 하네요. 크게 상관은 없다는 것 같아요. 관련 링크: https://stackoverflow.com/questions/64850206/serviceworker-missing-from-reactapp