/**
 * @license chowa v1.1.3
 *
 * Copyright (c) Chowa Techonlogies Co.,Ltd.(http://www.chowa.cn).
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */
import * as React from 'react';
import * as PropTypes from 'prop-types';
import { BaseStatisticProps } from './base-statistic';
import * as moment from 'moment';
import { OmitProps } from '../utils';
interface CountdownFormat {
    value: moment.Duration;
    format: (tpl: string) => string;
}
export interface CountdownProps extends OmitProps<BaseStatisticProps, 'valueNode'> {
    value: number | moment.Moment;
    formatter?: (cf: CountdownFormat) => React.ReactNode;
    onFinish?: () => void;
    refresInterval?: number;
}
export interface CountdownState {
    result: number;
}
declare class Countdown extends React.PureComponent<CountdownProps, CountdownState> {
    static propTypes: {
        value: PropTypes.Validator<number | object>;
        formatter: PropTypes.Requireable<(...args: any[]) => any>;
        onFinish: PropTypes.Requireable<(...args: any[]) => any>;
        refresInterval: PropTypes.Requireable<number>;
    };
    static defaultProps: {
        formatter: (cf: CountdownFormat) => string;
        refresInterval: number;
    };
    private timer;
    constructor(props: CountdownProps);
    componentDidMount(): void;
    componentWillUnmount(): void;
    render(): JSX.Element;
}
export default Countdown;