messaging

The current FirebaseApp instance for this Firebase service.

app: FirebaseApp;

Returns whether messaging auto initialization is enabled or disabled for the device.

isAutoInitEnabled: boolean;

Returns a boolean value whether the user has registered for remote notifications via registerDeviceForRemoteMessages().

isDeviceRegisteredForRemoteMessages: boolean;

Removes access to an FCM token previously authorized by it's scope. Messages sent by the server to this token will fail.

deleteToken(authorizedEntity?: undefined | string, scope?: undefined | string): Promise<void>;

On iOS, it is possible to get the users APNs token. This may be required if you want to send messages to your iOS devices without using the FCM service.

getAPNSToken(): Promise<string | null>;

When a notification from FCM has triggered the application to open from a quit state, this method will return a RemoteMessage containing the notification data, or null if the app was opened via another method.

getInitialNotification(): Promise<RemoteMessage | null>;

Returns an FCM token for this device. Optionally you can specify a custom authorized entity or scope to tailor tokens to your own use-case.

getToken(authorizedEntity?: undefined | string, scope?: undefined | string): Promise<string>;

Returns a AuthorizationStatus as to whether the user has messaging permission for this app.

hasPermission(): Promise<AuthorizationStatus>;

Called when the FCM server deletes pending messages. This may be due to:

onDeletedMessages(listener: () => void): () => void;

When any FCM payload is received, the listener callback is called with a RemoteMessage.

onMessage(listener: (message: RemoteMessage) => any): () => void;

When sending a RemoteMessage, this listener is called when the message has been sent to FCM.

onMessageSent(listener: (messageId: string) => any): () => void;

When the user presses a notification displayed via FCM, this listener will be called if the app has opened from a background state.

onNotificationOpenedApp(listener: (message: RemoteMessage) => any): () => void;

When sending a RemoteMessage, this listener is called when an error is thrown and the message could not be sent.

onSendError(listener: (evt: SendErrorEvent) => any): () => void;

Called when a new registration token is generated for the device. For example, this event can happen when a token expires or when the server invalidates the token.

onTokenRefresh(listener: (token: string) => any): () => void;

On iOS, if your app wants to receive remote messages from FCM (via APNs), you must explicitly register with APNs if auto-registration has been disabled.

registerDeviceForRemoteMessages(): Promise<void>;

On iOS, messaging permission must be requested by the current application before messages can be received or sent.

requestPermission(permissions?: IOSPermissions): Promise<AuthorizationStatus>;

Send a new RemoteMessage to the FCM server.

sendMessage(message: RemoteMessage): Promise<void>;

Sets whether auto initialization for messaging is enabled or disabled.

setAutoInitEnabled(enabled: boolean): Promise<void>;

Set a message handler function which is called when the app is in the background or terminated. In Android, a headless task is created, allowing you to access the React Native environment to perform tasks such as updating local storage, or sending a network request.

setBackgroundMessageHandler(handler: (message: RemoteMessage) => Promise<any>): any;

Apps can subscribe to a topic, which allows the FCM server to send targeted messages to only those devices subscribed to that topic.

subscribeToTopic(topic: string): Promise<void>;

Unregisters the app from receiving remote notifications.

unregisterDeviceForRemoteMessages(): Promise<void>;

Unsubscribe the device from a topic.

unsubscribeFromTopic(topic: string): Promise<void>;