Custom Guardian example for new Universal Login

The minimal example custom Guardian code at auth0-guardian.js/basic_widget.html at master · auth0/auth0-guardian.js · GitHub is now out of date with the new Universal Login experience. The new Universal Login does not require the user to respond to a Guardian push notification when enrolling – rather after enrollment it displays a recovery code and then the user is logged in. How would I modify the referenced code to achieve the same behavior?