"There are many problems with LibreJS, it blocks some scripts on the FSF
website."
It's not a LibreJS problem but an adoption problem: Even if the JavaScript is
intended to be free, most JavaScript has absolutely no information about
this. How is LibreJS (or even a human looking at the JavaScript) supposed to
know? Neither a human nor a computer can read the mind of the person that
made the website and somehow magically know their intention. People need to
add copyright & licensing information to their programs for it to be free.
This also extends into writing programs that are run inside a web browser.
It's as simple as that.
A common one I see people bring up is jQuery. They say "Oh, it's jQuery,
which is free already", to which I disgaree. jQuery is under the MIT license.
It's not under a copyleft license like the GPL, so people aren't required to
pass on freedom to the people using it. If the website's only offering a
minifed version (essentially a compiled version) of jQuery, how is a computer
(or even a human) intended to know if the author is in fact passing on the
required four freedoms if there is no source code, etc.? (The preferred form
for modification, and a minified JavaScript thing is hardly that.)
My understanding is that the FSF is working on making sure that every single
piece of JavaScript on their site has the proper stuff so that LibreJS will
know that it is free. If you find some that they missed please send them an
email.
You should also talk to other websites that have JavaScript with no copyright
or licensing information included and encourage them to put it in there so
that it can be known to be free.
