create a browser compatible fork of jsonlint

Author: siddharthkp

packages/app/config/webpack.common.js

@@ -375,7 +375,7 @@ module.exports = {
   },
 
   // To make jsonlint work
-  externals: ['file', 'system', 'jsdom', 'prettier', 'cosmiconfig'],
+  externals: ['jsdom', 'prettier', 'cosmiconfig'],
 
   resolve: {
     mainFields: ['browser', 'module', 'jsnext:main', 'main'],