Ext JS 6.2 - Extend from D3 base class example

MyD3Chart.js

Ext.define("Engine.view.charts.MyD3Chart",{
    extend: "Ext.panel.Panel",
    xtype: 'myd3chart',
    requires: [
        'Ext.d3.svg.Svg'
    ],
    layout: 'fit',
    scrollable: true,
    items: [{
        xtype: 'd3',
        cls: 'chart',
        listeners: {
            scenesetup: function (component, scene) {
		//custom D3 stuff here
            }
        }
    }]
});