import "../../_dnt.polyfills.js";
export declare const setHelper: {
    sort<T>(a: Iterable<T>, compareFn?: ((a: T, b: T) => number) | undefined): T[];
    union<T_1>(a: Iterable<T_1>, b: Iterable<T_1>): Set<T_1>;
    intersect<T_2>(a: Iterable<T_2>, b: Iterable<T_2>): Set<T_2>;
    subtract<T_3>(a: Iterable<T_3>, b: Iterable<T_3>): Set<T_3>;
    equals<T_4>(a: Iterable<T_4>, b: Iterable<T_4>): boolean;
    add<T_5>(target: Set<T_5>, value: T_5): boolean;
};
//# sourceMappingURL=setHelper.d.ts.map