export declare const downloadYoutubeMusic: (duration: number, { getYoutubeUrl, download, convert, truncate, }?: {
    getYoutubeUrl?: (() => Promise<string>) | undefined;
    download?: ((url: string) => Promise<string>) | undefined;
    convert?: ((m4aFile: string) => Promise<string>) | undefined;
    truncate?: ((mp3File: string, duration: number) => Promise<string>) | undefined;
}) => Promise<string>;