export declare class FakeHashSet {
    value: any;
    constructor(...arr: any[]);
    add(v: any): boolean;
    addAll(all: any): boolean;
    clear(): void;
    remove(v: any): boolean;
    removeAll(c: any): boolean;
    contains(v: any): boolean;
    get size(): any;
    get length(): any;
    isEmpty(): boolean;
    [Symbol.iterator](): any;
    iterator(): {
        next(): any;
        hasNext(): boolean;
    };
    toArray(): any;
    toJSON(): any;
}
export declare const fakeSet: (...arr: any[]) => FakeHashSet;