/**
 * Valid browser names for cookie extraction
 */
export declare const VALID_BROWSERS: readonly ["brave", "chrome", "chromium", "edge", "firefox", "opera", "safari", "vivaldi", "whale"];
export type ValidBrowser = typeof VALID_BROWSERS[number];
/**
 * Configuration type definitions
 */
export interface Config {
    file: {
        maxFilenameLength: number;
        downloadsDir: string;
        tempDirPrefix: string;
        sanitize: {
            replaceChar: string;
            truncateSuffix: string;
            illegalChars: RegExp;
            reservedNames: readonly string[];
        };
    };
    tools: {
        required: readonly string[];
    };
    download: {
        defaultResolution: "480p" | "720p" | "1080p" | "best";
        defaultAudioFormat: "m4a" | "mp3";
        defaultSubtitleLanguage: string;
    };
    limits: {
        characterLimit: number;
        maxTranscriptLength: number;
    };
    cookies: {
        file?: string;
        fromBrowser?: string;
    };
}
/**
 * Load configuration
 */
export declare function loadConfig(): Config;
/**
 * Safe filename processing function
 */
export declare function sanitizeFilename(filename: string, config: Config['file']): string;
/**
 * Get cookie-related yt-dlp arguments
 * Priority: file > fromBrowser
 * @param config Configuration object
 * @returns Array of yt-dlp arguments for cookie handling
 */
export declare function getCookieArgs(config: Config): string[];
export declare const CONFIG: Config;