I'm following the getting started tutorial.

1. Created the project using tns and it runs fine on the android device
2. Opened the folder as a website in visual studio and added a few files (sighnpView.xml and signUpView.ts). The .ts files do not compile on save.
3. I run the project and the alert statement in the onLoad function does not fire.
4. I added a new file "signupView.js" and it works just fine.

Is nativescript supposed to compile the typescript files or I'll have to make sure the correct js files exist? Not sure if I should add a gulp task to do the compilation.

Thanks.