lib/express.js

   1 /*!
   2  * express
   3  * Copyright(c) 2009-2013 TJ Holowaychuk
   4  * Copyright(c) 2013 Roman Shtylman
   5  * Copyright(c) 2014-2015 Douglas Christopher Wilson
   6  * MIT Licensed
   7  */
   8
   9 'use strict';
  10
  11 /**
  12  * Module dependencies.
  13  */
  14
  15 var bodyParser = require('body-parser')
  16 var EventEmitter = require('events').EventEmitter;
  17 var mixin = require('merge-descriptors');
  18 var proto = require('./application');
  19 var Router = require('router');
  20 var req = require('./request');
  21 var res = require('./response');
  22
  23 /**
  24  * Expose `createApplication()`.
  25  */
  26
  27 exports = module.exports = createApplication;
  28
  29 /**
  30  * Create an express application.
  31  *
  32  * @return {Function}
  33  * @api public
  34  */
  35
  36 function createApplication() {
  37   var app = function(req, res, next) {
  38     app.handle(req, res, next);
  39   };
  40
  41   mixin(app, EventEmitter.prototype, false);
  42   mixin(app, proto, false);
  43
  44   // expose the prototype that will get set on requests
  45   app.request = Object.create(req, {
  46     app: { configurable: true, enumerable: true, writable: true, value: app }
  47   })
  48
  49   // expose the prototype that will get set on responses
  50   app.response = Object.create(res, {
  51     app: { configurable: true, enumerable: true, writable: true, value: app }
  52   })
  53
  54   app.init();
  55   return app;
  56 }
  57
  58 /**
  59  * Expose the prototypes.
  60  */
  61
  62 exports.application = proto;
  63 exports.request = req;
  64 exports.response = res;
  65
  66 /**
  67  * Expose constructors.
  68  */
  69
  70 exports.Route = Router.Route;
  71 exports.Router = Router;
  72
  73 /**
  74  * Expose middleware
  75  */
  76
  77 exports.json = bodyParser.json
  78 exports.raw = bodyParser.raw
  79 exports.static = require('serve-static');
  80 exports.text = bodyParser.text
  81 exports.urlencoded = bodyParser.urlencoded