/**
 * Mutable holder for a single scheduled animation frame.
 */
export type AnimationFrameHandle = {
    frameId: number | null;
};
/**
 * Schedules callback for the next animation frame.
 * Any previously scheduled frame in this handle is canceled first.
 */
export declare function scheduleAnimationFrame(handle: AnimationFrameHandle, callback: () => void): void;
/**
 * Cancels a scheduled animation frame and clears the handle.
 */
export declare function cancelScheduledAnimationFrame(handle: AnimationFrameHandle): void;
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