import RestModel from 'discourse/models/rest'; import Singleton from 'discourse/mixins/singleton'; // A data model representing current session data. You can put transient // data here you might want later. It is not stored or serialized anywhere. const Session = RestModel.extend({ init: function() { this.set('highestSeenByTopic', {}); } }); Session.reopenClass(Singleton); export default Session;