refactor: subchapter 6.1 with nunjucks

.gitignore

@@ -25,6 +25,7 @@ build/Release
 # Dependency directory
 # https://www.npmjs.org/doc/misc/npm-faq.html#should-i-check-my-node_modules-folder-into-git
 node_modules
+package-lock.json
 
 # min files
 public

README.md

@@ -45,8 +45,8 @@ Execute a partir do diretório em que você for escrever a aplicação, pois ser
 
 ```
 $ npm i bluebird body-parser config debug express jwt-simple method-override moment
-$ npm i jshint mongojs mongoose mocha passport passport-http cors swig json2xml hbs jade
-$ npm i gulp gulp-concat gulp-minify-css gulp-uglify gulp-livereload gulp-util
+$ npm i jshint mongojs mongoose mocha passport passport-http cors swig nunjucks json2xml hbs jade
+$ npm i gulp gulp-concat gulp-minify-css gulp-clean-css gulp-uglify gulp-livereload gulp-util
 $ npm i grunt grunt-contrib-watch grunt-contrib-uglify grunt-contrib-cssmin
 $ npm i -g mocha istanbul gulp grunt nodemon
 ```

capitulo_6/capitulo_6.1/app.js

@@ -3,25 +3,30 @@
  */
 
 'use strict';
-var express = require('express'),
-    path    = require('path'),
-    swig    = require('swig'),
-    debug   = require('debug')('livro_nodejs:app'),
-    app     = express();
+const express = require('express');
+const path    = require('path');
+const nunjucks = require('nunjucks');
+const debug   = require('debug')('livro_nodejs:app');
+const app     = express();
 
 // config
 app.use(express.static(path.join(__dirname, 'public')));
 
 app.set('view engine', 'html');
 app.set('views', path.join(__dirname, 'views'));
-app.engine('html', swig.renderFile);
+
+nunjucks.configure('views', {
+  autoescape: true,
+  express: app,
+  tags: ''
+});
 
 // routes
 app.use('/', require('./routes'));
 
 // errors handling
 app.use(function(request, response, next) {
-  var err = new Error('Not Found');
+  let err = new Error('Not Found');
   err.status = 404;
   next(err);
 });

capitulo_6/capitulo_6.1/package.json

@@ -14,7 +14,7 @@
     "debug": "^2.2.0",
     "express": "^4.12.4",
     "json2xml": "^0.1.1",
-    "swig": "^1.4.2"
+    "nunjucks": "^3.0.0"
   },
   "devDependencies": {
     "gulp": "^3.9.0",

capitulo_6/capitulo_6.1/routes/index.js

@@ -1,5 +1,5 @@
-var express = require('express'),
-    router = express.Router();
+const express = require('express');
+const router = express.Router();
 
 router.get('/', function (request, response) {
   response.render('index', { title: 'Stormtroopers API' });
@@ -12,7 +12,8 @@ router.get('/loop', function (request, response) {
       { name: 'Episode IV: A New Hope'},
       { name: 'Episode V: The Empire Strikes Back'},
       { name: 'Episode VI: Return of the Jedi'},
-      { name: 'Episode VII: The Force Awakens'}
+      { name: 'Episode VII: The Force Awakens'},
+      { name: 'Episode VIII: The Last Jedi'}
     ]});
 });
 router.get('/if', function (request, response) {
@@ -24,10 +25,10 @@ router.get('/xml', function (request, response) {
   response.send('<?xml version="1.0" encoding="UTF-8"?><characters><character><name>Boba Fett</name><homeworld>Kamino</homeworld></character><character><name>Jango Fett</name><homeworld>Concord Dawn</homeworld></character><character><name>Chewbacca</name><homeworld>Kashyyyk</homeworld></character></characters>');
 });
 
-var json2xml = require('json2xml');
+let json2xml = require('json2xml');
 router.get('/xml-mapper', function (request, response) {
   response.header('Content-Type','text/xml');
-  var obj = { "characters": [
+  let obj = { "characters": [
     { "character": { "name": "Boba Fett", "homeworld": "Kamino" } },
     { "character": { "name": "Jango Fett", "homeworld": "Concord Dawn" } },
     { "character": { "name": "Chewbacca", "homeworld": "Kashyyyk" } }