# Used docs

https://firebase.google.com/docs/cloud-messaging/js/client?hl=en&authuser=0

https://firebase.google.com/docs/cloud-messaging/js/receive?hl=en&authuser=0

https://github.com/firebase/firebase-js-sdk/issues/5403

# Problem in Brave Browser when registering the FCM > Enable "Use Google services for push messaging"

brave://settings/privacy