Very cool. In a previous job we ran our JS unit tests on PhantomJS, using a tool that allowed arbitrary code to be piped to Phantom for execution and redirected

Very cool. In a previous job we ran our JS unit tests on PhantomJS, using a tool that allowed arbitrary code to be piped to Phantom for execution and redirected Phantom's console to stdout. (We did all this so our tests ran on something resembling a real browser, as opposed to jsdom.) Something similar should be possible with this.