message: Silences PropTypes warnings
diff: import React from 'react';
  import PropTypes from 'prop-types';
  -import Helmet from 'react-helmet-async';
  const GOOGLE_ANALYTICS_TRACKING_TAG = `
  (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
  @@ -75,11 +74,19 @@ const Page = ({
  </html>
  );
  +const helmetToComponentPropTypes = PropTypes.shape({
  + toComponent: PropTypes.func.isRequired,
  +});
  +
  Page.propTypes = {
  bundleName: PropTypes.string.isRequired,
  asset: PropTypes.func.isRequired,
  - helmet: PropTypes.shape(Helmet.propTypes).isRequired,
  + helmet: PropTypes.shape({
  + title: helmetToComponentPropTypes,
  + meta: helmetToComponentPropTypes,
  + link: helmetToComponentPropTypes,
  + }).isRequired,
  styles: PropTypes.string.isRequired,
  content: PropTypes.node.isRequired,
  