declare namespace Ext {
    export namespace fx {
        export namespace animation {
            export interface AbstractConfig {
                before?: object;
                easing?: string;
                listeners?: object;
            }

            export class Abstract extends Ext.Evented  {
                public getBefore(): void;
                public getEasing(): void;
                public setBefore(): void;
                public setEasing(): void;
            }
        }
    }
}