auto-refresh in an express/angular project

application.coffee

  watcher.watch __dirname + '/../public'
  watcher.watch __dirname + '/../views'

  io.sockets.on 'connection', (socket) ->
        watcher.on 'changed', -> socket.emit 'cmd:refresh'

controllers.js

function products($rootScope, $scope, $http, socket) {
    socket.on("cmd:refresh", function() { window.location.reload(true); });

watcher.coffee

class Watcher extends EventEmitter
    constructor: ->
        @watchers = []


    watch: (directory) =>
        fs.exists directory, =>
            finder = findit.find directory

            watchit = (f) =>
                @watchers.push fs.watch f, => @emit 'changed'

            finder.on 'directory', watchit
            finder.on 'file', watchit

    stop: =>
        _.each @watchers, (w) -> w.close()