Updated the files.

my-app/node_modules/karma-source-map-support/lib/index.js

@@ -0,0 +1,20 @@
+const path = require('path');
+
+const smsPath = path.dirname(require.resolve('source-map-support'));
+
+const createPattern = function(pattern) {
+  return {pattern: pattern, included: true, served: true, watched: false};
+};
+
+const init = function(files) {
+  files.unshift(createPattern(path.join(__dirname, 'client.js')));
+  files.unshift(
+    createPattern(path.join(smsPath, 'browser-source-map-support.js'))
+  );
+};
+
+init.$inject = ['config.files'];
+
+module.exports = {
+  'framework:source-map-support': ['factory', init]
+};