There are several ways for running JavaScript inside of a Ruby script. For example, there is ExecJS which is frequently used for porting NPM modules to Ruby. So, is there a "ExecRuby" for Node?
You can invoke Ruby like any other shell command using child_process.exec()
var exec = require("child_process").exec;
exec('ruby -e "puts \'Hello from Ruby!\'"', function (err, stdout, stderr) {
console.log(stdout);
});
Don't know if that's what you're looking for?