import { ImmutableQueue } from "@tsplus/stdlib/collections/ImmutableQueue/definition";
import { List } from "@tsplus/stdlib/collections/List/definition";
import { Hash } from "@tsplus/stdlib/structure/Hash";
import { Equals } from "@tsplus/stdlib/structure/Equals";
import { _A, ImmutableQueueSym } from "@tsplus/stdlib/collections/ImmutableQueue/definition";
export declare class ImmutableQueueInternal<A> implements ImmutableQueue<A> {
    readonly backingList: List<A>;
    readonly [ImmutableQueueSym]: ImmutableQueueSym;
    readonly [_A]: () => A;
    constructor(backingList: List<A>);
    [Hash.sym](): number;
    [Equals.sym](u: unknown): boolean;
    [Symbol.iterator](): Iterator<A>;
}
/**
 * @tsplus macro remove
 */
export declare function concreteImmutableQueue<A>(_: ImmutableQueue<A>): asserts _ is ImmutableQueueInternal<A>;
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