declare global {
    interface Window {
        _routerInitialized: Symbol;
    }
}
/**
 * 检查即将进入的路由，是前进还是后退
 */
export declare function direction(fromPath: string): 'forward' | 'backward';
export declare function historyLength(): number;
export declare function historyDepth(url: string): number;
export declare function init(): void;
export declare const router: {
    init: typeof init;
    direction: typeof direction;
    historyDepth: typeof historyDepth;
    historyLength: typeof historyLength;
};