Namespacing for Node.js

namespace.coffee

path = require('path')

loader = (ns) ->
    ns = ns.toString()
    parts = ns.split /\./
    requirePath = ns.replace /\./g, '/'

    try
        requirePath = path.dirname(require.main.filename) + '/' + requirePath
        require requirePath
    catch err
        try
            mod = loader(parts[0..parts.length-2].join('.'))[parts[parts.length-1]] if parts.length - 2 > 0
        catch moderr
            throw new Error 'namespace (' + ns + ') invalid'
            
        if mod is undefined
            throw new Error 'namespace (' + ns + ') invalid'
        else
            mod

module.exports = (ns) ->
    try
        loader ns
    catch err
        console.error err.message
        process.exit()