/**
 * @param el The element to animate
 * @param keyframes A list of keyframe definitions
 * @param options Animation options
 * @returns A promise that resolves when the animation is complete or rejects if cancelled
 */
export declare const promisifyAnimation: (el: Element | null | undefined, keyframes: Keyframe[] | PropertyIndexedKeyframes | null, options?: number | KeyframeAnimationOptions) => Promise<AnimationPlaybackEvent>;
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