import { HashMap } from "@tsplus/stdlib/collections/HashMap/definition";
import { Hash } from "@tsplus/stdlib/structure/Hash";
import { Equals } from "@tsplus/stdlib/structure/Equals";
import { HashSet, HashSetSym } from "@tsplus/stdlib/collections/HashSet/definition";
export declare class HashSetInternal<A> implements HashSet<A> {
    readonly _keyMap: HashMap<A, unknown>;
    readonly [HashSetSym]: HashSetSym;
    constructor(_keyMap: HashMap<A, unknown>);
    [Symbol.iterator](): Iterator<A>;
    [Hash.sym](): number;
    [Equals.sym](that: unknown): boolean;
}
/**
 * @tsplus macro remove
 */
export declare function realHashSet<A>(_: HashSet<A>): asserts _ is HashSetInternal<A>;
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