declare namespace Ext {
    export namespace plugin {
        export interface MouseEnterConfig {
            delegate?: string;
            element?: Ext.dom.Element | string;
            handler?: string | CallableFunction;
            id?: string;
            leaveHandler?: string | CallableFunction;
            pluginId?: string;
            scope?: object;
            stateEvents?: string | [];
        }

        export class MouseEnter extends Ext.plugin.Abstract  {
        }
    }
}