Environment
CLI: @next
Plugin(s): nativescript-dev-webpack@next

Describe the bug
webpack compilation doesn't stop on syntactic errors in js/vue apps

To Reproduce

1. tns create js_app --js
2. npm i nativescript-dev-webpack@next --save-dev --save-exact
3. node_modules/.bin/update-ns-webpack --deps --configs
4. tns run iOS
5. In main-view-model.js make syntactic error (add additional " somewhere)
   Result: webpack doesn't stop on error the app is deployed and crashes

Expected behavior
the build should stop on the error and app should not be deployed broken

Additional context
Not reproducible with nativescript-dev-webpack@1.2.1
It is reproducible withrun android too