import { ExtensionKey } from "../http/index.js";
/**
 * Path parameters matched from request.
 */
export type PathParams = {
    [key: string]: string | undefined;
};
/**
 * Path parameters extension key.
 */
export declare const PATH_PARAMS: ExtensionKey<PathParams>;
/**
 * Extension key for the nested path.
 */
export declare const NESTED_PATH: ExtensionKey<string>;
export declare const ROUTE_NOT_FOUND: unique symbol;