arborium-javascript 2.16.0

/*!
 * express
 * Copyright(c) 2009-2013 TJ Holowaychuk
 * Copyright(c) 2013 Roman Shtylman
 * Copyright(c) 2014-2015 Douglas Christopher Wilson
 * MIT Licensed
 */

'use strict';

/**
 * Module dependencies.
 * @private
 */

var finalhandler = require('finalhandler');
var debug = require('debug')('express:application');
var View = require('./view');
var http = require('node:http');
var methods = require('./utils').methods;
var compileETag = require('./utils').compileETag;
var compileQueryParser = require('./utils').compileQueryParser;
var compileTrust = require('./utils').compileTrust;
var resolve = require('node:path').resolve;
var once = require('once')
var Router = require('router');

/**
 * Module variables.
 * @private
 */

var slice = Array.prototype.slice;
var flatten = Array.prototype.flat;

/**
 * Application prototype.
 */

var app = exports = module.exports = {};

/**
 * Variable for trust proxy inheritance back-compat
 * @private
 */

var trustProxyDefaultSymbol = '@@symbol:trust_proxy_default';

/**
 * Initialize the server.
 *
 *   - setup default configuration
 *   - setup default middleware
 *   - setup route reflection methods
 *
 * @private
 */

app.init = function init() {
  var router = null;

  this.cache = Object.create(null);
  this.engines = Object.create(null);
  this.settings = Object.create(null);

  this.defaultConfiguration();

  // Setup getting to lazily add base router
  Object.defineProperty(this, 'router', {
    configurable: true,
    enumerable: true,
    get: function getrouter() {
      if (router === null) {
        router = new Router({
          caseSensitive: this.enabled('case sensitive routing'),
          strict: this.enabled('strict routing')
        });
      }

      return router;
    }
  });
};

/**
 * Initialize application configuration.
 * @private
 */

app.defaultConfiguration = function defaultConfiguration() {
  var env = process.env.NODE_ENV || 'development';

  // default settings
  this.enable('x-powered-by');
  this.set('etag', 'weak');
  this.set('env', env);
  this.set('query parser', 'simple')
  this.set('subdomain offset', 2);
  this.set('trust proxy', false);

  // trust proxy inherit back-compat
  Object.defineProperty(this.settings, trustProxyDefaultSymbol, {
    configurable: true,
    value: true
  });

  debug('booting in %s mode', env);

  this.on('mount', function onmount(parent) {
    // inherit trust proxy
    if (this.settings[trustProxyDefaultSymbol] === true
      && typeof parent.settings['trust proxy fn'] === 'function') {
      delete this.settings['trust proxy'];
      delete this.settings['trust proxy fn'];
    }

    // inherit protos
    Object.setPrototypeOf(this.request, parent.request)
    Object.setPrototypeOf(this.response, parent.response)
    Object.setPrototypeOf(this.engines, parent.engines)