app.js

"use strict";
const express = require('express'),
      path = require('path'),
      favicon = require('serve-favicon'),
      logger = require('morgan'),
      cookieParser = require('cookie-parser'),
      bodyParser = require('body-parser'),
      helmet = require('helmet');

if(!global.config) {
  global.config = require('./config');
}

process.env.NODE_ENV = process.env.NODE_ENV || 'local';

var app = express();

app.use(helmet());

app.use(function (req, res, next) {

  res.setHeader('Access-Control-Allow-Origin', global.config.get('ACCESS_CONTROL_ALLOW_ORIGIN'));
  res.setHeader('Access-Control-Allow-Methods', 'GET, POST, OPTIONS, PUT, PATCH, DELETE');
  res.setHeader('Access-Control-Allow-Headers', 'X-Requested-With,content-type');
  res.setHeader('Access-Control-Allow-Credentials', true);
  next();
});

// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());

app.use('/api', require('./routes/index'));

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  var err = new Error('Not Found');
  err.status = 404;
  next(err);
});

// error handlers
if (app.get('env') === 'development') {
  app.use(function(err, req, res, next) {
    res.status(err.status || 500);
  });
}

app.use(function(err, req, res, next) {
  res.status(err.status || 500);
});

module.exports = app;