import { PureComponent } from 'react';
export interface PortalProps {
    children?: any;
    className?: string;
    mounted?: boolean;
    mountDelay?: number;
    root?: any;
    unmountDelay?: number;
}
export interface PortalState {
    mounted?: boolean;
}
declare class Portal extends PureComponent<PortalProps, PortalState> {
    static propTypes: {
        children: import("prop-types").Validator<string | number | boolean | {} | import("prop-types").ReactElementLike | import("prop-types").ReactNodeArray>;
        className: import("prop-types").Requireable<string>;
        mounted: import("prop-types").Requireable<boolean>;
        mountAfter: import("prop-types").Requireable<number>;
        unmountAfter: import("prop-types").Requireable<number>;
        root: import("prop-types").Requireable<any>;
    };
    static defaultProps: Partial<PortalProps>;
    private element;
    private deferred;
    constructor(props: PortalProps);
    componentDidMount(): void;
    componentDidUpdate(prevProps: PortalProps): void;
    handlePortal: (type: string) => void;
    render(): JSX.Element | null;
}
export default Portal;