Function trackPage

src/withTracker.js:7–17

const withTracker = (WrappedComponent, options = {}) => {
  const trackPage = page => {
    if (process.env.NODE_ENV !== "production") {
      return;
    }

    GoogleAnalytics.set({
      page,
      ...options
    });
    GoogleAnalytics.pageview(page);
  };

  const BASENAME = process.env.REACT_APP_BASENAME || "";