export type TocItem = {
    title: string;
    url: string;
    items?: TocItem[];
};
export type TableOfContents = {
    items?: TocItem[];
};
export declare function useToc(getItemIds: () => string[]): {
    readonly activeId: string | null;
    readonly markerTopStyle: string;
    readonly markerHeightStyle: string;
    isActive: (item: TocItem) => boolean;
    isLastItem: (item: TocItem) => boolean;
};
export type TocState = ReturnType<typeof useToc>;