text: import firebase from '@firebase/app';
  import '@firebase/firestore';
  
  const config = {
    apiKey: 'AIzaSyBVctIzfUAsFWGaREyKO34sEsclnRgDMB0',
    authDomain: 'yizhangyichi-dev.firebaseapp.com',
    databaseURL: 'https://yizhangyichi-dev.firebaseio.com',
    projectId: 'yizhangyichi-dev',
    storageBucket: 'yizhangyichi-dev.appspot.com',
    messagingSenderId: '994409866375',
  };
  
  const app = firebase.initializeApp(config);
  const firestore = firebase.firestore(app);
  
  export default firestore;
  