Primer was a hypermedia-oriented technology at Facebook in the late 2000s/early 2010s. I learned about it randomly by someone pointing me to this talk:<p><a href="https://www.youtube.com/watch?v=wHlyLEPtL9o" rel="nofollow">https://www.youtube.com/watch?v=wHlyLEPtL9o</a><p>It's crazy to think that in some alternate universe, rather than me boring you all to tears about htmx, instead Facebook might have chosen Primer as their main UI technology, making that the defacto standard of web development!