interface ExtendedKeyframeAnimationOptions extends KeyframeAnimationOptions {
    reducedMotion?: 'allow';
}
export declare function cssVar(expression: string, el: HTMLElement): string | null;
export declare function animateTo(el: HTMLElement, keyframes: Keyframe[], options?: ExtendedKeyframeAnimationOptions): 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;
    easing?: string;
    offset?: number | null;
}[];
export {};
