Analytics

The application supports tracking page views with pluggable analytics handlers.

Google Analytics

Google Analytics (GA) is supported by default. The enable GA, set the GA tracker ID to the environment variable REACT_APP_GOOGLE_ANALYTICS_ID;

If you want to add a new analytics library, you can do as follows:

Add the analytics library script

If the analytics library has an external script, add the library script tag to the src/public/index.html file. If you need more control, see how the GA script is added in server/renderer.js.
Create a handler

To track page views, create a custom handler e.g. in src/analytics/handlers.js. The handler should be a class that implements a trackPageView(url) method.

Note that the url parameter might not be the same as in the URL bar of the browser. It is the canonical form of the URL. For example, in the listing page it doesn't have the dynamic title slug in the middle. This allows unified analytics and correct tracking of pages that can be accessed from multiple different URLs.

If you analytics library takes the page URL from the browser, you might need to override that behavior to use the canonical URL that is given to the method.
Initialise the handler

Initialise the handler in the setupAnalyticsHandlers() function in src/index.js.