Use grunt-babel with babel-polyfill for ES6 transpilation (RocketMap#…

…1675)

* Use grunt-babel with babel-polyfill for ES6 transpilation

* Use grunt-babel with babel-polyfill for ES6 transpilation

* Moved static/js/map.js back to static/map.js and fixed newly added undeclared variable references in map.js

Gruntfile.js

@@ -22,13 +22,25 @@ module.exports = function(grunt) {
         }
       }
     },
+    babel: {
+      options: {
+        sourceMap: true,
+        presets: ['es2015']
+      },
+      dist: {
+        files: {
+          'static/dist/js/app.js': 'static/js/app.js',
+          'static/dist/js/map.js': 'static/map.js'
+        }
+      }
+    },
     uglify: {
       options: {
         banner: '/*\n <%= pkg.name %> <%= grunt.template.today("yyyy-mm-dd") %> \n*/\n'
       },
       build: {
         files: {
-          'static/dist/js/app.min.js': 'static/js/app.js'
+          'static/dist/js/app.min.js': 'static/dist/js/app.js'
         }
       }
     },
@@ -44,7 +56,7 @@ module.exports = function(grunt) {
   		js: {
   			files: ['**/*.js', '!node_modules/**/*.js', '!static/dist/**/*.js'],
   			options: { livereload: true },
-        tasks: ['uglify']
+        tasks: ['babel', 'uglify']
   		},
   		css: {
   			files: '**/*.scss',
@@ -77,7 +89,8 @@ module.exports = function(grunt) {
   grunt.loadNpmTasks('grunt-usemin');
   grunt.loadNpmTasks('grunt-contrib-concat');
   grunt.loadNpmTasks('grunt-html-validation');
+  grunt.loadNpmTasks('grunt-babel');
 
-  grunt.registerTask('default', ['jshint', 'sass', 'cssmin', 'uglify', 'watch']);
+  grunt.registerTask('default', ['jshint', 'sass', 'cssmin', 'babel', 'uglify', 'watch']);
 
 };

package.json

@@ -4,7 +4,9 @@
   "description": "Pokemon Go Map - Live Visualization",
   "main": "Gruntfile.js",
   "devDependencies": {
+    "babel-preset-es2015": "^6.9.0",
     "grunt": "^0.4.5",
+    "grunt-babel": "^6.0.0",
     "grunt-contrib-clean": "latest",
     "grunt-contrib-concat": "latest",
     "grunt-contrib-connect": "latest",