import type { SliderInstance } from "./types.js";
export interface SyncThumbnailsOptions {
    /** Loop the thumbnail strip. Defaults to true. */
    loop?: boolean;
}
/**
 * Links a thumbnail slider to a primary one: clicking a thumbnail navigates the
 * primary, and the strip follows the primary's active slide. Returns a teardown.
 */
export declare function syncThumbnails(primary: SliderInstance, thumbnails: SliderInstance, options?: SyncThumbnailsOptions): () => void;