import React, { ReactNode, ElementType } from 'react';
import { BoxProps } from '@mui/material';
export interface HelperTextContentProps extends BoxProps<ElementType> {
    /**
     * Text on the left side
     */
    textLeft?: ReactNode;
    /**
     * Properties applied to text on the left side
     */
    textLeftProps?: BoxProps<ElementType>;
    /**
     * Text on the right side, expected to be characters count, e.g. '0 / 100'
     * It is recommended to also provide aria-label.
     */
    textRight?: ReactNode;
    /**
     * Properties applied to text on the right side
     */
    textRightProps?: BoxProps<ElementType>;
    /**
     * Input value
     */
    value?: string;
    /**
     * Input maxLength
     */
    maxLength?: number;
}
/**
 * Advanced content for the Field's HelperText
 *
 *  <TextField helperText={<HelperTextContent textLeft='Helper text' textRight='0/100' />}>
 */
export declare const HelperTextContent: React.FC<HelperTextContentProps>;