import React from 'react';
import { HeaderProps, HeaderState } from '../interfaces';
declare class Header extends React.PureComponent<HeaderProps, HeaderState> {
    constructor(props: HeaderProps);
    componentDidMount(): void;
    componentWillReceiveProps(nextProps: HeaderProps): void;
    onlineCount: () => JSX.Element;
    render(): JSX.Element;
}
export default Header;