Update webpack.base.conf.js

build/webpack.base.conf.js

@@ -58,10 +58,17 @@ module.exports = {
       {
         test: /\.js$/,
         loader: 'babel-loader?cacheDirectory',
+        include: [resolve('src'), resolve('test')]
+      },
+      {
+        test: /\.js$/,
+        use: [{
+          loader: 'babel-loader',
           options: {
              presets: ['es2015']
-        },
-        include: [resolve('src'), resolve('test')]
+          }
+        }],
+        exclude: /node_modules/
       },
       {
         test: /\.(png|jpe?g|gif|svg)(\?.*)?$/,