declare namespace Ext {
    export namespace chart {
        export namespace interactions {
            export interface RotateConfig {
                chart?: Ext.chart.AbstractChart;
                enabled?: boolean;
                listeners?: object;
            }

            export class Rotate extends Ext.chart.interactions.Abstract  {
                public rotateTo(angle?: number, relative?: boolean, animate?: boolean): void;
            }
        }
    }
}