Added babel for JS files

Author: mariusoe

package.json

@@ -39,7 +39,8 @@
     "ts-loader": "^5.3.0",
     "vizceral": "^4.7.3",
     "webpack": "^4.26.0",
-    "webpack-cli": "^3.2.3"
+    "webpack-cli": "^3.2.3",
+    "uglifyjs-webpack-plugin": "1.3.0"
   },
   "dependencies": {
     "lodash": "^4.17.11",

src/graph/GraphGenerator.js

@@ -1,4 +1,4 @@
-var _ = require('lodash');
+import _ from 'lodash';
 
 class GraphGenerator {
 

webpack.config.js

@@ -49,6 +49,16 @@ module.exports = {
   },
   module: {
     rules: [
+      {
+        test: /\.js$/,
+        exclude: /(node_modules|bower_components)/,
+        use: {
+          loader: 'babel-loader',
+          options: {
+            presets: ['@babel/preset-env']
+          }
+        }
+      },
       {
         test: /\.tsx?$/,
         loaders: [