export declare function replaceHistory(options: Partial<URL>): void;
export declare function pushHistory(options: Partial<URL>): void;
export declare function getCurrentPage(): number | null;
export declare function getNavigation(bookHtmlContainer?: Element): {
    headersObserver: IntersectionObserver;
    pageObserver: IntersectionObserver;
    observeNavigation: () => void;
    disconnectNavigation: () => void;
};