import { ChangeFlag, MutationContext, Persistent } from '@collectable/core';
import { AnyNode, Empty, NodeType } from './types';
export declare class EmptyNode<K, V> implements Empty<K, V> {
    readonly '@@mctx': MutationContext;
    group: number;
    type: NodeType.EMPTY;
    '@@clone'(mctx: MutationContext): EmptyNode<K, V>;
    modify(owner: Persistent, change: ChangeFlag, shift: number, get: (value?: any) => any, hash: number, key: K): AnyNode<K, V>;
}
export declare const EMPTY: EmptyNode<any, any>;
export declare function empty<K, V>(): Empty<K, V>;