import React from 'react';
import { MDCSelectHelperTextAdapter } from '@material/select/helper-text/adapter';
import { MDCSelectHelperTextFoundation } from '@material/select/helper-text/foundation';
export interface SelectHelperTextProps extends React.HTMLProps<HTMLParagraphElement> {
    persistent?: boolean;
    setHelperTextFoundation?: (foundation?: MDCSelectHelperTextFoundation) => void;
}
interface ElementAttributes {
    'aria-hidden'?: boolean | 'false' | 'true';
    role?: string;
}
interface SelectHelperTextState extends ElementAttributes {
    classList: Set<string>;
}
export declare class SelectHelperText extends React.Component<SelectHelperTextProps, SelectHelperTextState> {
    foundation?: MDCSelectHelperTextFoundation;
    state: SelectHelperTextState;
    componentDidMount(): void;
    componentWillUnmount(): void;
    readonly classes: string;
    readonly adapter: MDCSelectHelperTextAdapter;
    render(): JSX.Element;
}
export {};