this.notificationListener = firebase
  .notifications()
  .onNotification((notification: Notification) => {

    const channel = new firebase.notifications.Android.Channel(
      'test-channel',
      'Test Channel',
      firebase.notifications.Android.Importance.Max
    ).setDescription('My apps test channel');

    if (notification && notification.data) {
      const data = notification.data;
      if (data && data.messageKey) {

        if (
          data.messageKey === '3001' ||
          data.messageKey === '3006'
        ) {

          channel.setSound('alert');
        } else {

          channel.setSound('chime');
        }
      }
    }

    // Create the channel
    firebase.notifications().android.createChannel(channel);
    // Process your notification as required
    notification
    .android.setChannelId('test-channel')
    .android.setSmallIcon(Images.logoSmall);


firebase.notifications()
    .displayNotification(notification);
  });