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
 15var EventEmitter = require('events').EventEmitter;
 16var mixin = require('merge-descriptors');
 17var proto = require('./application');
 18var Route = require('./router/route');
 19var Router = require('./router');
 20var req = require('./request');
 21var res = require('./response');
 22
 23/**
 24 * Expose `createApplication()`.
 25 */
 26
 27exports = module.exports = createApplication;
 28
 29/**
 30 * Create an express application.
 31 *
 32 * @return {Function}
 33 * @api public
 34 */
 35
 36function 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  app.request = { __proto__: req, app: app };
 45  app.response = { __proto__: res, app: app };
 46  app.init();
 47  return app;
 48}
 49
 50/**
 51 * Expose the prototypes.
 52 */
 53
 54exports.application = proto;
 55exports.request = req;
 56exports.response = res;
 57
 58/**
 59 * Expose constructors.
 60 */
 61
 62exports.Route = Route;
 63exports.Router = Router;
 64
 65/**
 66 * Expose middleware
 67 */
 68
 69exports.query = require('./middleware/query');
 70exports.static = require('serve-static');
 71
 72/**
 73 * Replace removed middleware with an appropriate error message.
 74 */
 75
 76[
 77  'json',
 78  'urlencoded',
 79  'bodyParser',
 80  'compress',
 81  'cookieSession',
 82  'session',
 83  'logger',
 84  'cookieParser',
 85  'favicon',
 86  'responseTime',
 87  'errorHandler',
 88  'timeout',
 89  'methodOverride',
 90  'vhost',
 91  'csrf',
 92  'directory',
 93  'limit',
 94  'multipart',
 95  'staticCache',
 96].forEach(function (name) {
 97  Object.defineProperty(exports, name, {
 98    get: function () {
 99      throw new Error('Most middleware (like ' + name + ') is no longer bundled with Express and must be installed separately. Please see https://github.com/senchalabs/connect#middleware.');
100    },
101    configurable: true
102  });
103});