Whip up a file,
main.js with some require()s in it. You can use relative paths like './foo.js' and '../lib/bar.js' or module paths like 'gamma' that will search node_modules/ using node's module lookup algorithm.
var foo = require('./foo.js'); var bar = require('../lib/bar.js'); var gamma = require('gamma'); var elem = document.getElementById('result'); var x = foo(100) + bar('baz'); elem.textContent = gamma(x);