declare namespace Ext {
    export namespace util {
        export interface ComponentDraggerConfig {
            autoStart?: boolean | number;
            constrain?: boolean;
            constrainDelegate?: boolean;
            constrainTo?: Ext.util.Region | Ext.dom.Element;
            delegate?: string | Ext.dom.Element;
            el?: Ext.dom.Element | string;
            listeners?: object;
            overCls?: string;
            preventDefault?: boolean;
            stopEvent?: boolean;
            tolerance?: number;
            trackOver?: boolean;
        }

        export class ComponentDragger extends Ext.dd.DragTracker  {
            public constructor(comp?: object, config?: object);
        }
    }
}