import React, { ReactElement } from 'react';
import TimelineItem from './TimelineItem';
import TimelineItemGroup from './TimelineItemGroup';
import { TimelineProps } from './iTimeline';
declare class Timeline extends React.Component<TimelineProps> {
    static Item: typeof TimelineItem;
    static Group: typeof TimelineItemGroup;
    timelineRef: React.RefObject<HTMLUListElement>;
    hasLabel?: boolean;
    constructor(props: TimelineProps);
    componentDidMount(): void;
    componentDidUpdate(_prevProps: Readonly<TimelineProps>, _prevState: Readonly<{}>, _snapshot?: any): void;
    setLabelWidth: (flag: string) => void;
    isGroup: (ele: ReactElement) => boolean;
    itemToArr: (ele: ReactElement) => any;
    flat: (a: Array<ReactElement>) => React.ReactElement<any, string | React.JSXElementConstructor<any>>[];
    getPositionCls: (ele: ReactElement<any>, idx: number) => string;
    render(): JSX.Element;
}
export default Timeline;