https://www.gstatic.com/firebasejs/9.6.1/firebase-app-compat.js
https://www.gstatic.com/firebasejs/9.6.1/firebase-auth-compat.js
https://www.gstatic.com/firebasejs/9.6.1/firebase-firestore-compat.js
https://www.gstatic.com/firebasejs/9.6.1/firebase-storage-compat.js