Express 3.x to 4.x Migration

app.js

@@ -3,34 +3,40 @@
  * Module dependencies.
  */
 
-var express = require('express'),
-  routes = require('./routes'),
-  api = require('./routes/api');
-
-var app = module.exports = express.createServer();
-
-// Configuration
-
-app.configure(function(){
-  app.set('views', __dirname + '/views');
-  app.set('view engine', 'jade');
-  app.set('view options', {
-    layout: false
-  });
-  app.use(express.bodyParser());
-  app.use(express.methodOverride());
-  app.use(express.static(__dirname + '/public'));
-  app.use(app.router);
-});
-
-
-app.configure('development', function(){
-  app.use(express.errorHandler({ dumpExceptions: true, showStack: true }));
-});
-
-app.configure('production', function(){
-  app.use(express.errorHandler());
-});
+var http = require('http');
+var express = require('express');
+var routes = require('./routes');
+var api = require('./routes/api');
+var path = require('path');
+
+var favicon = require('serve-favicon');
+var logger = require('morgan');
+var methodOverride = require('method-override');
+var session = require('express-session');
+var bodyParser = require('body-parser');
+var multer = require('multer');
+var errorHandler = require('errorhandler');
+
+var app = express();
+
+// all environments
+app.set('port', process.env.PORT || 3000);
+app.set('views', path.join(__dirname, 'views'));
+app.set('view engine', 'jade');
+app.use(logger('dev'));
+app.use(methodOverride());
+app.use(session({ resave: true,
+                  saveUninitialized: true,
+                  secret: 'uwotm8' }));
+app.use(bodyParser.json());
+app.use(bodyParser.urlencoded({ extended: true }));
+app.use(express.static(path.join(__dirname, 'public')));
+
+// error handling middleware should be loaded after the loading the routes
+
+if ('development' == app.get('env')) {
+  app.use(errorHandler());
+}
 
 // Routes
 
@@ -40,17 +46,18 @@ app.get('/partials/:name', routes.partials);
 // JSON API
 
 app.get('/api/posts', api.posts);
-
 app.get('/api/post/:id', api.post);
 app.post('/api/post', api.addPost);
 app.put('/api/post/:id', api.editPost);
 app.delete('/api/post/:id', api.deletePost);
 
 // redirect all others to the index (HTML5 history)
+
 app.get('*', routes.index);
 
 // Start server
 
-app.listen(3000, function(){
-  console.log("Express server listening on port %d in %s mode", app.address().port, app.settings.env);
+var server = http.createServer(app);
+server.listen(app.get('port'), function(){
+  console.log('Express server listening on port ' + app.get('port'));
 });

package.json

@@ -1,9 +1,22 @@
 {
-    "name": "application-name"
-  , "version": "0.0.1"
-  , "private": true
-  , "dependencies": {
-      "express": "2.5.10"
-    , "jade": ">= 0.0.1"
+  "name": "application-name",
+  "version": "1.0.0",
+  "main": "app.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "dependencies": {
+    "angularjs": "0.0.1",
+    "body-parser": "^1.16.0",
+    "connect": "^3.5.0",
+    "errorhandler": "^1.5.0",
+    "express": "^4.14.0",
+    "express-session": "^1.15.0",
+    "jade": "^1.11.0",
+    "method-override": "^2.3.7",
+    "morgan": "^1.7.0",
+    "multer": "^1.2.1",
+    "pug": "^2.0.0-beta6",
+    "serve-favicon": "^2.3.2"
   }
-}
+}

routes/api.js

@@ -75,4 +75,4 @@ exports.deletePost = function (req, res) {
   } else {
     res.json(false);
   }
-};
+};