Jade template packing for client-side usage with Express

jade        = require 'jade'
dive        = require 'diveSync'

compiledTemplates = ''

compileTemplates = (callback) ->
  compiledTemplates = 'window.templates = {};'

  baseDirectory = __dirname + '/templates'

  dive baseDirectory, (err, file) ->
    if err
      throw err

    if path.extname(file) == '.jade'
      name = file.replace(/\//g, '.')
      name = name.substring( 0, name.length - '.jade'.length )
      name = name.substring( baseDirectory.length + 1 )
      compiledTemplates += 'templates.' + name + ' = ' + jade.compile( fs.readFileSync( file, 'utf-8' ), { client: true, compileDebug: false } ).toString() + ';'

# Compile the templates once on startup
compileTemplates()

app.get '/javascripts/jade.js', (req, res) ->
  # Serve the minified Jade runtime to the client
  fs.readFile __dirname + '/node_modules/jade/runtime.min.js', 'utf-8', (err, data) ->
    res.writeHead 200, 'Content-Type': 'text/javascript'
    res.end data

app.get '/javascripts/templates.js', (req, res) ->
  # If we aren't in production, recompile the templates to ensure they are up to date
  if !process.env.PRODUCTION
    compileTemplates()

  res.writeHead 200, 'Content-Type': 'text/javascript'
  res.end compiledTemplates