projection changes between v4-v5: how to work with three.js/threebox?

[prusswan]

I am trying to understand what is needed for threebox/three.js to work properly with the latest maplibre v5.

I had asked a similar question at jscastro76/threebox#444 and verified that threebox's example is able to work with maplibre v4 even though that project does not officially support maplibre. I just need some information on the possible changes that are needed if I want to use threebox with maplibre v5.