test.jsx

import React from 'react';
import GoogleAnalytics from 'react-ga';
const { NODE_ENV } = process.env;

GoogleAnalytics.initialize('UA-47365686-9');

const withTracker = (WrappedComponent) => {
  const trackPage = (page) => {
    GoogleAnalytics.set({ page });
    GoogleAnalytics.pageview(page);
  };

  const HOC = (props) => {
    const page = props.location.pathname;

    if (NODE_ENV === 'production') {
        trackPage(page);
    }

    window.Intercom("update");

    return (
      <WrappedComponent {...props} />
    );
  };

  return HOC;
};

export default withTracker;