My first problem is that "a server" only tells me it probably listens on a socket.
Is it a web server, a web framework, a PBX, telnet or general TCP, UDP or Unix socket support functions? Which protocols does it run? Is it a library? Is it a daemon?
It says so little, it could be literally anything.
I guess it has something to do with HTTP and I guess it's a library/framework because I guess a web developer wrote this, but only because it mentions JavaScript and doesn't specify further. But these are still just guesses, I wouldn't know from the text alone.
> works out of the box with modern Javascript
Does it work with other languages too, just not out of the box? If not, the "out of the box" doesn't add anything here. Doesn't similar code work out of the box anyway?