import { IndexedCollection } from '@collectable/core';
import { Associative, MutationContext } from '@collectable/core';
import { AnyNode } from './nodes';
export declare class HashMapStructure<K, V> implements IndexedCollection<K, V, [K, V], Associative<V>> {
    _root: AnyNode<K, V>;
    _size: number;
    /** @internal */
    constructor(mctx: MutationContext, _root: AnyNode<K, V>, _size: number);
    /** @internal */
    readonly '@@is-collection': true;
    /** @internal */
    readonly '@@size': number;
    /** @internal */
    readonly '@@mctx': MutationContext;
    /** @internal */
    '@@clone'(mctx: MutationContext): HashMapStructure<K, V>;
    /** @internal */
    '@@equals'(other: HashMapStructure<K, V>): boolean;
    /** @internal */
    '@@hash'(): number;
    /** @internal */
    '@@unwrap'(): Associative<V>;
    /** @internal */
    '@@unwrapInto'(target: Associative<V>): Associative<V>;
    /** @internal */
    '@@createUnwrapTarget'(): Associative<V>;
    /** @internal */
    '@@get'(key: K): V | undefined;
    /** @internal */
    '@@has'(key: K): boolean;
    /** @internal */
    '@@set'(key: K, value: V): this;
    /** @internal */
    '@@update'(updater: (value: V, map: this) => any, key: K): this;
    /** @internal */
    '@@verifyKey'(key: K): boolean;
    [Symbol.iterator](): IterableIterator<[K, V]>;
}
export declare function isHashMap<K, V>(arg: any): arg is HashMapStructure<K, V>;