firebase import ERROR

mpiled with problems:X
ERROR in ./src/firebase.js 12:15-37
export 'default' (imported as 'firebase') was not found in 'firebase/app' (possible exports: FirebaseError, SDK_VERSION, _DEFAULT_ENTRY_NAME, _addComponent, _addOrOverwriteComponent, _apps, _clearComponents, _components, _getProvider, _registerComponent, _removeServiceInstance, deleteApp, getApp, getApps, initializeApp, onLog, registerVersion, setLogLevel)

• 읽고 있는 책과 다르게 firebase 버전이 올라가면서 import문이 바뀌었다.
• 기존 firebase 8버전

import firebase from "firebase/app";

• 현재 firebase 9버전 이후

import firebase from 'firebase/compat/app';