Refactor away init middleware

lib/application.js

@@ -6,7 +6,6 @@ var finalhandler = require('finalhandler');
 var mixin = require('utils-merge');
 var Router = require('./router');
 var methods = require('methods');
-var middleware = require('./middleware/init');
 var debug = require('debug')('express:application');
 var View = require('./view');
 var http = require('http');
@@ -98,8 +97,6 @@ app.lazyrouter = function() {
       caseSensitive: this.enabled('case sensitive routing'),
       strict: this.enabled('strict routing')
     });
-
-    this._router.use(middleware.init(this));
   }
 };
 
@@ -128,6 +125,24 @@ app.handle = function(req, res, done) {
     return;
   }
 
+  // set powered by header
+  if (this.enabled('x-powered-by')) {
+    res.setHeader('X-Powered-By', 'Express');
+  }
+
+  // set circular references
+  req.res = res;
+  res.req = req;
+
+  // alter the prototypes
+  req.__proto__ = this.request;
+  res.__proto__ = this.response;
+
+  // setup locals
+  if (!res.locals) {
+    res.locals = Object.create(null);
+  }
+
   router.handle(req, res, done);
 };