export declare function animationTo(element: HTMLElement, keyframes: Keyframe | Keyframe[], options?: KeyframeAnimationOptions): Animation;
export declare const KEYFRAMES: {
    fadeIn: {
        opacity: number;
        easing: string;
        offset: number;
    }[];
    fadeOut: {
        opacity: number;
        easing: string;
        offset: number;
    }[];
};