import { CategoriesConfig } from '../config/categoryConfig';
export declare function useActiveCategoryScrollDetection({ setActiveCategory, setVisibleCategories, categories, }: {
    setActiveCategory: (category: string) => void;
    setVisibleCategories: (categories: string[]) => void;
    /**
     * Effective category list. The merged array reference only changes when
     * the configuration is re-merged, so the observer re-subscribes exactly
     * when sections are added or removed — no serialization involved.
     */
    categories: CategoriesConfig;
}): void;