export declare class Chord {
    private static readonly KEYS;
    private static readonly FIX_KEYS;
    private static readonly FLAT_SHARP_KEYS;
    static readonly AllChords: string[];
    private static readonly ValidNumberList;
    private static readonly ValidChordPartList;
    static FixChord(chord: string): string;
    static UnFixChord(chord: string): string;
    static FlatToSharpChord(chord: string): string;
    static SharpToFlatChord(chord: string): string;
    static FixAllChords(text: string): string;
    static ConvertSharpToFlat(text: string): string;
    static ConvertFlatToSharp(text: string): string;
    static SharpFlatConvertions(text: string, fromSharpToFlat: boolean): string;
    static IsChord(chord: string): boolean;
    static IsChord(chord: string, keyIndexRef: {
        value: number;
    }): boolean;
    static Transpose(chord: string, transposeAmt: number): string;
    static TransposeAmt(fromChord: string, toChord: string): number;
    static fixChord(chord: string): string;
    static isChord(chord: string): boolean;
    static transpose(chord: string, transposeAmt: number): string;
    private static GetKeyIndex;
    private static IsValidChordNumber;
    private static IsValidPart;
    private static IsMainChord;
    private static TransposePart;
}