interface SecondFunction<T> {
    <S>(second: T | S): second is T;
}
interface FirstFunction {
    <T>(first: T): SecondFunction<T>;
}
export declare const equals: FirstFunction;
export declare const less: FirstFunction;
export declare const greater: FirstFunction;
export declare const lessOrEqual: FirstFunction;
export declare const greaterOrEqual: FirstFunction;
export {};