export interface Matcher {
    [Symbol.match](string: string): RegExpMatchArray | null;
}
export declare class Enum {
    readonly value: string;
    get length(): number;
    constructor(value: any);
    toString(): string;
    includes(val: string, position?: number): boolean;
    indexOf(val: string, position?: number): number;
    match(matcher: string | RegExp | Matcher): RegExpMatchArray | null;
    toLowerCase(): Enum;
    toUpperCase(): Enum;
}