Polymer-IDE lint reports 99+ problems from bower_components and build

[RuslanKim]

When I enable Polymer-IDE lint reports 99+ problems from "bower_components" (I have a custom one called "lib") and "build" folders.
Actually it does not work at all.
VS Code - v1.11.2
Polymer/polymer#2.0.0-rc.7
How I can exclude: /lib /build from lint?

[JoeRobich]

I have a similar issue where Polymer-IDE linting issues are showing up in files unrelated to Polymer components. In my polymer.json file I am very specific about which files to include as sources, but this extension seems to show errors for any open file.