import * as React from 'react';
export interface FormGroupProps {
    className?: string;
    style?: React.CSSProperties;
    controlId?: string;
    validationState?: 'success' | 'warning' | 'error';
}
export declare class FormGroup extends React.Component<FormGroupProps, {}> {
    private static childContextTypes;
    constructor(props: FormGroupProps, context?: any);
    getChildContext: () => {
        $bs_formGroup: {
            controlId: string;
            validationState: "error" | "success" | "warning";
        };
    };
    hasFeedback: (children: any) => any;
    render(): JSX.Element;
}