import * as React from 'react';
export declare const addEventListenerWrap: (target: any, eventType: any, cb: any) => any;
export declare const contains: (root: any, child: any) => boolean;
export declare const getRootDomNode: (element: any) => HTMLElement;
export declare const saveRef: (name: any, component: any) => void;
export declare const ConfigContext: React.Context<{}>;