import Exceptional from "../util/Exceptional";
export default class Accidental {
    private symbol;
    private offset;
    static size: number;
    private static _values;
    static TRIPLE_FLAT: Accidental;
    static DOUBLE_FLAT: Accidental;
    static FLAT: Accidental;
    static NATURAL: Accidental;
    static SHARP: Accidental;
    static DOUBLE_SHARP: Accidental;
    static TRIPLE_SHARP: Accidental;
    private constructor();
    static values(): Accidental[];
    ordinal(): number;
    static valueOf(accidentalString: string): Accidental;
    static isValid(value: number | string): boolean;
    static fromOffset(offset: number): Exceptional<Accidental>;
    getOffset(): number;
    static fromString(accidentalString: string): Exceptional<Accidental>;
    toString(): string;
}