import * as React from 'react';
declare class CountDown extends React.Component<any, any> {
    timer: any;
    interval: number;
    constructor(props: any);
    componentDidMount(): void;
    componentWillReceiveProps(nextProps: any): void;
    componentWillUnmount(): void;
    initTime: (props: any) => {
        lastTime: number;
    };
    defaultFormat: (time: any) => JSX.Element;
    tick: () => void;
    render(): JSX.Element;
}
export default CountDown;