However, there are two problems:
1. In main.js file, properties from those libraries are underlined as "Unresolved variable" (strange.. these are the same properties that get code hints during typing)
2. In index.html file where the libraries are included using <script> tag, they are colored and marked as "There is no locally stored library for the HTTP link".
How to tell PHPStorm where those libraries are to get rid of those problems?