export declare function ensureDirectoryExists(dirPath: string): void;
export declare function fileExists(filePath: string): boolean;
export declare function readJsonFile<T>(filePath: string): Promise<T>;
export declare function writeJsonFile<T>(filePath: string, data: T): void;
export declare function isValidUrl(url: string): boolean;
export declare function isValidToken(token: string): boolean;
export declare function maskToken(token: string, showLength?: number): string;
export declare function getCurrentTimestamp(): string;
export declare function createBackupFileName(originalPath: string): string;
//# sourceMappingURL=helpers.d.ts.map