export declare class ConvertSong {
    private static readonly converter;
    private readonly tempPath;
    FromFontName: string;
    ToFontName: string;
    constructor(tempPath?: string | null);
    constructor(fromFontName: string, toFontName: string);
    Convert(sourceText: string): string;
    static Convert(sourceText: string, fromFontName: string, toFontName: string, _tempPath?: string | null): string;
    static GetChordStartAndEndIndex(text: string): {
        start: number;
        end: number;
    } | null;
}