import * as React from 'react';
import type { ITooltipProps } from './Tooltip.types';
import type { JSXElement } from '@fluentui/utilities';
export declare class TooltipBase extends React.Component<ITooltipProps, any> {
    static defaultProps: Partial<ITooltipProps>;
    private _classNames;
    render(): JSXElement;
    private _onRenderContent;
}