storybook/examples/official-storybook/components/addon-a11y/Image.js

import React from 'react';
import PropTypes from 'prop-types';

function Image({ src, alt, presentation }) {
  return <img src={src} alt={alt} role={presentation ? 'presentation' : null} />;
}

Image.propTypes = {
  src: PropTypes.string.isRequired,
  alt: PropTypes.string,
  presentation: PropTypes.bool,
};

Image.defaultProps = {
  alt: null,
  presentation: false,
};

export default Image;