/*!
 * Copyright (c) Microsoft Corporation.
 * Licensed under the MIT License.
 */
export declare class SetHelper {
    static new(a: Set<number>, b: Iterable<number>): void;
    static union(a: Set<number>, b: Iterable<number>): void;
    static intersection(a: Set<number>, b: Iterable<number>): void;
    static symmetricDifference(a: Set<number>, b: Iterable<number>): void;
    static difference(a: Set<number>, b: Iterable<number>): void;
}