Ext.define('Ext.overrides.app.domain.View', { override: 'Ext.app.domain.View', requires: [ 'Ext.Component' ], constructor: function(controller) { this.callParent([controller]); // The base class handles Ext.Widget, which encompasses // component for modern, so we only need the override here. this.monitoredClasses.push(Ext.Component); }});