After whinging gratuitously about how cruddy non-browser JavaScript is, Mark Fowler kindly pointed me in the right direction to get Perl integration working: JavaScript.pm.
So now I’ve wrapped up JSLint into a small command line tool (and Perl lib), JavaScript::Lint.
It’s fairly simple at the moment. I plan to add support for the options in jslint soon.
Jabbering Giraffe 