upgrade to webpack 2.2.x

config/webpack.config.js

@@ -48,24 +48,23 @@ var config = {
   devtool: 'inline-source-map',
 
   module: {
-    loaders: [
+    rules: [
       {
         test: /\.(js|es6)$/,
         exclude: /(node_modules|vendor\/assets)/,
         loader: 'babel-loader',
-        query: {
-          presets: ['es2015', 'stage-2']
+        options: {
+          presets: [
+            ["es2015", {"modules": false}],
+            'stage-2'
+          ]
         }
       },
       {
         test: /\.(js|es6)$/,
         exclude: /node_modules/,
         loader: 'imports-loader',
-        query: 'this=>window'
-      },
-      {
-        test: /\.json$/,
-        loader: 'json-loader'
+        options: 'this=>window'
       }
     ]
   },
@@ -86,7 +85,7 @@ var config = {
   ],
 
   resolve: {
-    extensions: ['', '.js', '.es6', '.js.es6'],
+    extensions: ['.js', '.es6', '.js.es6'],
     alias: {
       '~':              path.join(ROOT_PATH, 'app/assets/javascripts'),
       'bootstrap/js':   'bootstrap-sass/assets/javascripts/bootstrap',
@@ -102,14 +101,16 @@ if (IS_PRODUCTION) {
   config.devtool = 'source-map';
   config.plugins.push(
     new webpack.NoErrorsPlugin(),
+    new webpack.LoaderOptionsPlugin({
+      minimize: true,
+      debug: false
+    }),
     new webpack.optimize.UglifyJsPlugin({
-      compress: { warnings: false }
+      sourceMap: true
     }),
     new webpack.DefinePlugin({
       'process.env': { NODE_ENV: JSON.stringify('production') }
-    }),
-    new webpack.optimize.DedupePlugin(),
-    new webpack.optimize.OccurrenceOrderPlugin()
+    })
   );
 }
 

package.json

@@ -19,21 +19,19 @@
     "compression-webpack-plugin": "^0.3.2",
     "d3": "3.5.11",
     "dropzone": "4.2.0",
-    "exports-loader": "^0.6.3",
     "imports-loader": "^0.6.5",
     "jquery": "2.2.1",
     "jquery-ui": "github:jquery/jquery-ui#1.11.4",
     "jquery-ujs": "1.2.1",
-    "json-loader": "^0.5.4",
     "mousetrap": "1.4.6",
     "pikaday": "^1.5.1",
     "select2": "3.5.2-browserify",
-    "stats-webpack-plugin": "^0.4.2",
+    "stats-webpack-plugin": "^0.4.3",
     "underscore": "1.8.3",
     "vue": "2.0.3",
     "vue-resource": "0.9.3",
-    "webpack": "^1.14.0",
-    "webpack-dev-server": "^1.16.2"
+    "webpack": "^2.2.1",
+    "webpack-dev-server": "^2.3.0"
   },
   "devDependencies": {
     "eslint": "^3.10.1",