Function onMessageSent

onMessageSent(
messaging: Messaging,
listener: (messageId: string) => any,
): () => void
When sending a RemoteMessage, this listener is called when the message has been sent to FCM.
Parameters
- messaging: Messaging
  Messaging instance.
- listener: (messageId: string) => any
  Called when the FCM sends the remote message to FCM.
Returns () => void
Function to unsubscribe from the message sent listener.
- Defined in modular.ts:283