most simple Node.js+CoffeeScript at Heroku

app.coffee

require('coffee-script')
http = require('http')

port = process.env.PORT or 8080
hostAddress = "0.0.0.0"
if(port == 8080)
  hostAddress = "127.0.0.1"

http.createServer (req, res) ->
  res.writeHead 200, 'Content-Type': 'text/plain'
  res.end 'Hello World from CoffeeScript\n'
.listen port, hostAddress
console.log 'Server running at http://%s:%d/', hostAddress, port

package.json

{
    "name":"hoge",
    "version":"0.0.1",
    "private":true,
    "scripts":{
        "start":"coffee app.coffee"
    },
    "dependencies":{
        "coffee-script":">=1.1.3",
        "socket.io":">=0.8.7"
    }
}

Procfile

web: coffee app.coffee