/**
 * Runs a callback on every animation frame with delta time.
 * Automatically cleans up on unmount.
 *
 * @param {(deltaMs: number) => void} callback - Called each frame with time elapsed since last frame in ms
 * @param {boolean} [enabled=true] - Whether the animation loop is running
 *
 * @example
 * useAnimationFrame((delta) => {
 *   // delta is ~16ms at 60fps
 *   rotation.current += speed * delta;
 *   element.style.transform = `rotate(${rotation.current}deg)`;
 * });
 */
export declare function useAnimationFrame(callback: (deltaMs: number) => void, enabled?: boolean): void;