如何在注銷時取消注冊FCM設備令牌和服務工作人員以及如何重新初始化Firebase應用程序? [英]How to unregister FCM device token and service worker on logout and how to reinitialize the Firebase app?
通過 firebase 雲函數向 web 應用發送 FCM 消息 [英]Sending FCM messages to web apps through firebase cloud functions