p5.js-web-editor/client/components/useAsModal.jsx

import React from 'react';
import styled from 'styled-components';
import { useModalBehavior } from '../utils/custom-hooks';

const BackgroundOverlay = styled.div`
  position: fixed;
  z-index: 2;
  width: 100% !important;
  height: 100% !important;
  
  background: black;
  opacity: 0.3;
`;

export default (Element, hasOverlay = false) => {
  const [visible, toggle, setRef] = useModalBehavior();

  const wrapper = () => (visible &&
    <div>
      {hasOverlay && <BackgroundOverlay />}
      <div ref={setRef}>
        { (typeof (Element) === 'function')
          ? Element(toggle)
          : Element}
      </div>
    </div>);

  return [toggle, wrapper];
};