export declare function animateTo(el: HTMLElement, keyframes: Keyframe[], options?: KeyframeAnimationOptions): Promise<unknown>;
export declare function parseDuration(delay: number | string): number;
export declare function prefersReducedMotion(): boolean;
export declare function stopAnimations(el: HTMLElement): Promise<unknown[]>;
export declare function shimKeyframesHeightAuto(keyframes: Keyframe[], calculatedHeight: number): {
    height: string | number | null | undefined;
    composite?: CompositeOperationOrAuto | undefined;
    easing?: string | undefined;
    offset?: number | null | undefined;
}[];
export declare const animate_show: ({
    height: number;
    overflow: string;
} | {
    height: string;
    overflow: string;
})[];
export declare const animate_hide: ({
    height: string;
    overflow: string;
} | {
    height: number;
    overflow: string;
})[];