declare namespace Ext {
    export namespace fx {
        export interface AnimConfig {
            to?: object;
            alternate?: boolean;
            autoEnd?: boolean;
            callback?: string | CallableFunction;
            delay?: number;
            duration?: number;
            dynamic?: boolean;
            easing?: string;
            from?: object;
            iterations?: number;
            keyframes?: object;
            listeners?: object;
            remove?: boolean;
            reverse?: boolean;
            scope?: object;
            target?: string | object;
        }

        export class Anim extends Ext.Base  {
            public currentIteration?: number;
            public isAnimation?: boolean;
            public paused?: boolean;
            public running?: boolean;
            public startTime?: Date;
            public end(suppressEvent?: object): void;
            public jumpToEnd(): void;
        }
    }
}