import React, { PureComponent } from 'react';
import PropTypes from 'prop-types';
import { ContextValue } from '../configProvider/context';
import '@douyinfe/semi-foundation/lib/es/_portal/portal.css';
export interface PortalProps {
    children: React.ReactNode;
    style?: React.CSSProperties;
    prefixCls?: string;
    className?: string;
    getPopupContainer?: () => HTMLElement;
    didUpdate?: (props: PortalProps) => void;
}
export interface PortalState {
    container: undefined | HTMLElement;
}
declare class Portal extends PureComponent<PortalProps, PortalState> {
    static contextType: React.Context<ContextValue>;
    static defaultProps: {
        prefixCls: string;
    };
    static propTypes: {
        children: PropTypes.Requireable<PropTypes.ReactNodeLike>;
        prefixCls: PropTypes.Requireable<string>;
        getPopupContainer: PropTypes.Requireable<(...args: any[]) => any>;
        className: PropTypes.Requireable<string>;
        didUpdate: PropTypes.Requireable<(...args: any[]) => any>;
    };
    el: HTMLElement;
    context: ContextValue;
    constructor(props: PortalProps, context: ContextValue);
    componentDidMount(): void;
    initContainer: (context: ContextValue, catchError?: boolean) => HTMLElement;
    componentDidUpdate(prevProps: PortalProps): void;
    componentWillUnmount(): void;
    addStyle: (style?: {}) => void;
    addClass: (prefixCls: string, context?: ContextValue, ...classNames: string[]) => void;
    render(): React.ReactPortal;
}
export default Portal;