import { type FullSpaRoute } from 'spa-router-vir';
/**
 * Top level routes supported by the element-book app.
 *
 * @category Internal
 */
export declare enum BookMainRoute {
    Search = "search",
    Book = "book"
}
/**
 * Valid route paths for the element-book app.
 *
 * @category Internal
 */
export type ValidBookPaths = [BookMainRoute.Search, string] | [BookMainRoute.Book, ...string[]];
/**
 * A full element-book app route. Only paths are supported.
 *
 * @category Internal
 */
export type BookFullRoute = Readonly<FullSpaRoute<ValidBookPaths, undefined, undefined>>;
/**
 * Extract the current search query from the current route paths.
 *
 * @category Internal
 */
export declare function extractSearchQuery(paths: Readonly<ValidBookPaths>): string;
/**
 * The default element-book app route.
 *
 * @category Internal
 */
export declare const defaultBookFullRoute: Readonly<BookFullRoute>;