Here are the scripts used by this page (at the time of this writing):
First script:
https://trisquel.info/files/js/js_3d9d0c9c4619540c6e8259882d462ab9.js
Second script:
Third script:
/* */
The first one has a license, but LibreJS doesn't detect it because the
license indicator comments LibreJS expects aren't used.
The last two don't have any sort of license indicated. I suppose the
reasoning is that they're trivial. I think LibreJS disagrees, though, because
of something it isn't able to check properly for triviality.