export interface UnorderedSetOptions<T> {
    id?: Uint8Array | string;
    initialValues?: T[];
}
export declare class UnorderedSet<T> {
    private readonly setId;
    constructor(options?: UnorderedSetOptions<T>);
    id(): string;
    idBytes(): Uint8Array;
    add(value: T): boolean;
    has(value: T): boolean;
    delete(value: T): boolean;
    clear(): void;
    size(): number;
    toArray(): T[];
    toJSON(): Record<string, unknown>;
}
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