Chris, you know better than this nonsense. No experts know the answer, but the FSF strongly advocates the position that JS running on your computer is just like any other software running on your computer. The AGPL was written to require a server operator to free their patches to software running on their server, not in your browser.

https://www.fsf.org/news/announcing-js-labels https://www.gnu.org/philosophy/javascript-trap.en.html

It isn't at all clear how courts will decide the case if such a case ever comes to trial.

The AGPL exists to close a loophole for code running on the server. Code being served to the client obviously needs the permission of the code’s copyright holder. Otherwise, all those movie piracy streaming sites wouldn’t get constantly shut down.