import { EncodeStream } from '../encode-stream';
import { TypeSet } from '../types/type-set';
import { JSOptions, Value } from './types';
export declare class Set implements Value {
    type: TypeSet;
    items: Value[] | null;
    constructor(type: TypeSet, items: Value[] | null);
    indexOf(value: Value): number;
    at(index: number): Value | undefined;
    toString(): string;
    serialize(stream: EncodeStream): import("../zjson").Value[] | null;
    isUnset(): boolean;
    toJS(opts?: JSOptions): any[] | null;
}