Add stack-source-map again but only for Chrome.

dist/server/error_enhancements.js

@@ -0,0 +1,12 @@
+'use strict';
+
+var isChrome = function isChrome() {
+  return navigator.userAgent.toLowerCase().indexOf('chrome') > -1;
+};
+
+// This only works with Chrome (AKA V8).
+// So, using this on other browsers cause problems.
+// But this provides a lot of value when debugging bundled code.
+if (isChrome()) {
+  require('stack-source-map/register');
+}

dist/server/webpack.config.js

@@ -20,7 +20,7 @@ var config = {
   devtool: '#cheap-module-eval-source-map',
   entry: {
     manager: [managerEntry],
-    preview: ['webpack-hot-middleware/client']
+    preview: [_path2.default.resolve(__dirname, './error_enhancements'), 'webpack-hot-middleware/client']
   },
   output: {
     path: _path2.default.join(__dirname, 'dist'),

package.json

@@ -36,6 +36,7 @@
     "keycode": "^2.1.1",
     "webpack-dev-middleware": "^1.6.0",
     "webpack-hot-middleware": "^2.10.0",
+    "stack-source-map": "^1.0.5",
     "babel-core": "^6.3.15",
     "babel-loader": "^6.2.0",
     "babel-polyfill": "^6.3.15",

src/server/error_enhancements.js

@@ -0,0 +1,10 @@
+var isChrome = function() {
+ return navigator.userAgent.toLowerCase().indexOf('chrome') > -1;
+};
+
+// This only works with Chrome (AKA V8).
+// So, using this on other browsers cause problems.
+// But this provides a lot of value when debugging bundled code.
+if(isChrome()) {
+  require('stack-source-map/register');
+}

src/server/webpack.config.js

@@ -13,6 +13,7 @@ const config = {
       managerEntry,
     ],
     preview: [
+      path.resolve(__dirname, './error_enhancements'),
       'webpack-hot-middleware/client',
     ],
   },