export declare enum Accidental {
    DOUBLE_FLAT = -2,
    FLAT = -1,
    NATURAL = 0,
    SHARP = 1,
    DOUBLE_SHARP = 2
}
export declare namespace Accidental {
    const names: string[];
    function toString(accidental: Accidental): string;
    function fromString(accidental: string): Accidental | undefined;
}