/**
 * TTPlayer（千千静听）sample content — the declarative data layer for the app
 * (mechanism/content separation: the component only implements the player
 * mechanism; everything a user sees as "content" lives here).
 *
 * Track metadata nods to the 2002–2007 C-pop era TTPlayer belongs to (titles
 * and artist names are facts, not copyrightable expression). The lyrics are
 * ORIGINAL placeholder lines written for this project in LRC style — they are
 * deliberately not the copyrighted originals (see NOTICE.md).
 */
export interface LrcLine {
    /** Seconds from track start. */
    time: number;
    text: string;
}
export interface TTTrack {
    id: string;
    title: string;
    artist: string;
    /** Displayed track length in seconds. */
    duration: number;
    lrc: LrcLine[];
}
/**
 * Every track the in-app "add" button can offer. The initial playlist is the
 * subset listed in DEFAULT_PLAYLIST_IDS; the rest are added on demand.
 */
export declare const TRACK_POOL: TTTrack[];
/** IDs of the tracks shown when the app first opens. */
export declare const DEFAULT_PLAYLIST_IDS: string[];