text: const React = require('react');
  
  exports.onRenderBody = ({
    setHeadComponents
  }, options) => {
    if (options.linkStyles === false) return false;
    const link = React.createElement('link', {
      key: 'leaflet',
      rel: 'stylesheet',
      href: 'https://unpkg.com/leaflet@1.7.1/dist/leaflet.css',
      integrity: 'sha512-xodZBNTC5n17Xt2atTPuE1HxjVMSvLVW9ocqUKLsCC5CXdbqCmblAshOMAS6/keqq/sMZMZ19scR4PsZChSR7A==',
      crossOrigin: ''
    });
    setHeadComponents([link]);
  };