How to use it:

$ ./beamjs -pa ../beamjs_misultin/ebin -pa ../beamjs_misultin/deps/misultin/ebin/ -mod http beamjs_misultin 
beam.js> require('http').createServer(function (request, response) {  response.writeHead(200, {'Content-Type': 'text/plain'}); response.end('Hello World\n');}).listen(8124);
{"port":8124}

... done!