export declare class VEB {
    readonly bound: number;
    private shift;
    private lo_mask;
    private clusters;
    private summary;
    private min;
    private max;
    private _size;
    constructor(bound: number);
    get size(): number;
    insert(x: number): boolean;
    delete(x: number): boolean;
    next(x: number): number;
    has(x: number): boolean;
    prev(x: number): number;
    keys(): Generator<number>;
    values(): Generator<number, any, unknown>;
    entries(): Generator<[number, number]>;
    [Symbol.iterator](): Generator<number, any, unknown>;
}