/// <reference types="react" />
import { PureComponent } from 'react';
import { IPopper } from './popper';
export interface Props {
    autoPosition?: boolean;
    align?: 'left' | 'center' | 'right';
    onOutsideClick?: () => void;
    target?: HTMLElement;
    spacing?: 'none';
}
export interface State {
    position?: string;
    transform?: string;
}
export default class Panel extends PureComponent<Props, State> {
    state: State;
    popper?: IPopper;
    componentDidMount(): void;
    componentWillUnmount(): void;
    componentWillReceiveProps(nextProps: Props): void;
    extractStyles: (state: any) => void;
    private applyPopper(props);
    render(): JSX.Element;
    private findBoundary(elem);
    private popperPlacement();
}