As of jsmacros 1.8.0, lnaguage extensions are no longer minecraft mods, to install them see instructions on this page
This literally just works to add luaj (lua 5.2) support to the JS Macros mod, it's completely dependent on JS Macros and adds nothing else.
on jsmacros libraries, : must be used instead of . as a it needs the library passed as the first argument of functions.
