import React, { ReactNode } from "react";
import { createPortal as domCreatePortal } from "react-dom";
type RouterPush = (url: string) => void | Promise<void>;
type CreatePortal = typeof domCreatePortal;
interface Ui89OverrideType {
    routerPush?: RouterPush;
    currentZIndex: number;
    nextZIndex: () => number;
    createPortal: CreatePortal;
}
export interface Ui89OverrideProps {
    children?: ReactNode;
    routerPush?: RouterPush;
    createPortal?: CreatePortal;
}
export declare const Ui89Provider: React.FC<Ui89OverrideProps>;
export declare const useUi89: () => Ui89OverrideType;
export {};