以下のファイルにfirebaseの各種設定を記述
/src/firebase/config.js
// firebase設定
export const firebaseConfig = {
apiKey: 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX',
authDomain: 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX',
databaseURL: 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX',
projectId: 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX',
storageBucket: 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX',
messagingSenderId: 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX',
};
詳細については下記を参照