nodejs in titanium

Hello everyone! am new to titanium I installed this:npm install mcrypt and I put this code in alloy.js

var mcrypt = require('mcrypt');
 
var algos = mcrypt.getAlgorithmNames();
console.log(algos);

I get an error 404, says that the library does not exist (mcrypt.js) However, I have created an application nodejs external titanium and everything works fine. why can not I use library node in titanium? Thanks.