import * as React from 'react';
export interface ToTopProps {
    prefixCls?: string;
    className?: string;
    style?: React.CSSProperties;
    onClick?: (e: any) => void;
    children?: React.ReactNode;
    displayHeight?: number;
    visible?: boolean;
}
export interface State {
    visible: boolean;
}
declare class ToTop extends React.PureComponent<ToTopProps, State> {
    static defaultProps: {
        prefixCls: string;
        style: {};
        displayHeight: number;
    };
    constructor(props: ToTopProps);
    componentDidMount(): void;
    componentWillUnmount(): void;
    static setScrollTop(parameters: {
        value: any;
    }): void;
    handleScroll: () => void;
    scrollToTop: (e: any) => void;
    render(): JSX.Element;
}
export default ToTop;