Magic buckets

host.js

var vm = require('vm');
var fs = require('fs');

var logger = {
	log: function() {
		console.log('<foo>');
		console.log.apply(null, arguments);
		console.log('</foo>');
	}
}
var context = vm.createContext({ console: logger, require: require});
var script = fs.readFileSync('script.js', 'utf8');
vm.runInContext(script, context);

module.js

module.exports.writeToLog = function() {
	console.log("this is from a module");
}

OUTPUT

<foo>
this is from the script
</foo>
this is from a module

script.js

var module = require('./module.js');

console.log("this is from the script");
module.writeToLog();