type NativeScrollbarSyncOptions = {
    /** The native `overflow: scroll` container that renders the OS scrollbar. */
    element: HTMLElement;
    /** Child element that is sized to create the scrollable range. */
    spacer: HTMLElement;
    /** Which axis this scrollbar controls. */
    orientation: 'x' | 'y';
};
/**
 * Bridges a native scroll container to the artboard offset.
 *
 * artboard-deluxe is transform-based and has no native scrolling, so the OS
 * scrollbar can't be used directly. This plugin keeps a real `overflow: scroll`
 * element in sync with the artboard offset in both directions, which lets the
 * browser render its default scrollbar while the artboard still owns the
 * pan/zoom model:
 *
 * - artboard → native: the spacer is sized so the native max-scroll equals the
 *   artboard's scrollable range (correct thumb proportions), and `scrollTop`/
 *   `scrollLeft` mirrors the current offset every frame.
 * - native → artboard: user-initiated scrolls (thumb drag, track click, wheel
 *   over the bar) are pushed back to the artboard via `setOffset`.
 */
export declare const nativeScrollbarSync: (options: NativeScrollbarSyncOptions) => import("artboard-deluxe").ArtboardPluginDefinition<NativeScrollbarSyncOptions, object>;
export {};