There's also already a Lisp-on-Node project called Sibilant. Jake's got a neat live-compile-in-the-browser demo up here:
And the source is available here (and as an NPM package):
And the source is available here (and as an NPM package):
All of the docs on Parenscript seem to assume you're using it to render bits of JS and HTML from a Common Lisp server. It would be useful if there were a tutorial that showed how to use Parenscript for this use case, simply to compile lisp-like code into standalone JS files for use with whatever arbitrary backend.
Interesting what you say about foo.bar; PS originally did that, and I was one of the people who lobbied against it. It does make getting started a little easier, but interferes with macros down the road. For example, if you want to do anything like transforming foo.bar to foox.barx, you end up having to parse the symbols to split them, which seems wrong. Since Lisp-style metaprogramming is pretty much Parenscript's raison d'être (well, that and interoperability with CL for the crazy few who care), it seems foolish to do anything to compromise it.
There's something satisfyingly elegant about using an interpreted language to interpret another language - macros can actually modify the compiler at compile-time, from within the language. I hope to make more use of this possibility in the future, as it's currently only used for macros.