export declare class Guard {
    private static instance;
    private constructor();
    static get Against(): Guard;
    NullOrUndefined<T>(value: T | undefined, paramName: string): T;
    NullOrEmpty<T>(value: T | undefined, paramName: string): T;
    Enums<T extends {
        [s: string]: unknown;
    }>(e: T, value: any, enumName: string): void;
    private isSomeEnum;
}