/**
 * Output module
 * Handles file output
 */
import type { BannerResult } from './types.js';
/**
 * Save banner result to text file
 */
export declare function saveToFile(result: BannerResult, outputDir: string, filename?: string): Promise<string>;
/**
 * Save raw banner text
 */
export declare function saveRawText(text: string, outputPath: string): Promise<string>;
/**
 * Check if a path is writable
 */
export declare function isWritable(dirPath: string): Promise<boolean>;
/**
 * Ensure directory exists
 */
export declare function ensureDir(dirPath: string): Promise<void>;
/**
 * Generate unique filename if file exists
 */
export declare function getUniqueFilename(dirPath: string, baseName: string, extension: string): Promise<string>;
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