improve sourcemap generation

config/karma.config.js

@@ -12,7 +12,7 @@ module.exports = function(config) {
       { pattern: 'spec/javascripts/fixtures/**/*@(.json|.html|.html.raw)', included: false },
     ],
     preprocessors: {
-      'spec/javascripts/**/*.js?(.es6)': ['webpack'],
+      'spec/javascripts/**/*.js?(.es6)': ['webpack', 'sourcemap'],
     },
     webpack: webpackConfig,
     webpackMiddleware: { stats: 'errors-only' },

config/webpack.config.js

@@ -40,7 +40,7 @@ var config = {
     filename: IS_PRODUCTION ? '[name]-[chunkhash].js' : '[name].js'
   },
 
-  devtool: 'source-map',
+  devtool: 'inline-source-map',
 
   module: {
     loaders: [
@@ -93,6 +93,7 @@ var config = {
 }
 
 if (IS_PRODUCTION) {
+  config.devtool = 'source-map';
   config.plugins.push(
     new webpack.NoErrorsPlugin(),
     new webpack.optimize.UglifyJsPlugin({

package.json

@@ -27,7 +27,7 @@
     "underscore": "1.8.3",
     "vue": "2.0.3",
     "vue-resource": "0.9.3",
-    "webpack": "^1.13.2",
+    "webpack": "^1.14.0",
     "webpack-dev-server": "^1.16.2"
   },
   "devDependencies": {
@@ -41,6 +41,7 @@
     "jasmine-jquery": "^2.1.1",
     "karma": "^1.3.0",
     "karma-jasmine": "^1.1.0",
+    "karma-sourcemap-loader": "^0.3.7",
     "karma-webpack": "^1.8.0"
   }
 }