Google Analytics for Firebase の設定方法（Web）

Firebase コンソール
  > プロジェクト設定
    > 統合
      > Google Analytics
        > 有効にする

// Import the functions you need from the SDKs you need
import { initializeApp } from 'firebase/app';
import { getAnalytics } from 'firebase/analytics';
// TODO: Add SDKs for Firebase products that you want to use
// https://firebase.google.com/docs/web/setup#available-libraries

// Your web app's Firebase configuration
// For Firebase JS SDK v7.20.0 and later, measurementId is optional
const firebaseConfig = {
  apiKey: '***************************************',
  authDomain: 'example-project.firebaseapp.com',
  projectId: 'example-project',
  storageBucket: 'example-project.appspot.com',
  messagingSenderId: '1234567890123',
  appId: '1:1234567890123:web:**********************',
  measurementId: 'G-**********',
};

// Initialize Firebase
const app = initializeApp(firebaseConfig);
const analytics = getAnalytics(app);

import { logEvent } from 'firebase/analytics';

logEvent(analytics, 'notification_received');