WebStorm 2016.1.3, a new bug fix update for WebStorm 2016.1, is now available!
This update brings Angular 2 RC compatibility (the IDE now understands variable declarations with let inside the structural directives such as *ngFor and provides proper auto imports with paths starting with @angular), support for the scoped npm packages, and improvements in the TypeScript support and integration with the build tools. You can find the full list of addressed issues in the release notes for the builds 145.1616 and 145.1503.
A patch-update from WebStorm 2016.1.2 and 2016.1.3 EAP should be available.
Your WebStorm Team