missing def

client/notifications/notification.js

@@ -62,6 +62,7 @@ Meteor.startup(function() {
 				// This logic is duplicated in /client/startup/unread.coffee.
 				const hasFocus = readMessage.isEnable();
 				const messageIsInOpenedRoom = openedRoomId === notification.payload.rid;
+				const muteFocusedConversations = RocketChat.getUserPreference(Meteor.user(), 'muteFocusedConversations');
 
 				if (RocketChat.Layout.isEmbedded()) {
 					if (!hasFocus && messageIsInOpenedRoom) {