export interface GuidValue {
    toString: () => string;
}
/**
 * Class to create a guid
 */
export declare class Guid implements GuidValue {
    private static _empty;
    static newGuid(): GuidValue;
    static get empty(): GuidValue;
    static isValid(guid: string | GuidValue): boolean;
    private value;
    constructor(guid: string);
    toString(): string;
    toJSON: () => string;
    valueOf(): string;
}