We use the old JS method of implementing analytics. (I know, we should be using Launch! But we're not there yet!) 🙂
We're creating a new SPA mini-function on the site, and I need to be able to track each iteration of the screens. Previously for SPAs we have imported a part of the URL into the s.pagename, but for this SPA the URL will not change between screens.
If I have understood correctly, you are looking for ways to capture the page name because the URL is not changing. So, I will suggest you to create a custom event & fire that event when the screen changes. Also, capture the variables and events and then fire s.t() or s.tl() call.