import React, { useEffect } from 'react'; import PropTypes from 'prop-types'; const SwitchToMirrorMode = (props) => { // setup effect useEffect(() => { document.body.classList.add('mirror'); // remove this props.onDeleteRender(this); }, [props]); return <>; }; SwitchToMirrorMode.propTypes = { onDeleteRender: PropTypes.func.isRequired, }; export default SwitchToMirrorMode;