export interface BackupOptions {
    maxGenerations?: number;
    maxAgeMs?: number;
}
/**
 * Get backup directory path for a library
 */
export declare function getBackupDirectory(libraryName: string): string;
/**
 * Create a backup of the given file
 */
export declare function createBackup(sourceFile: string, libraryName: string): Promise<string>;
/**
 * List all backups for a library (sorted by modification time, newest first)
 */
export declare function listBackups(libraryName: string): Promise<string[]>;
/**
 * Clean up old backups based on generation count and age
 */
export declare function cleanupOldBackups(libraryName: string, options?: BackupOptions): Promise<void>;
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