Bug, feature request, or proposal:

• Bug

What is the expected behavior?

What is the current behavior?

What are the steps to reproduce?

Simply use any card or button components and build in prod mode.

$ ng build -prod # is breaking
$ ng build -dev # OK

Which versions of Angular, Material, OS, browsers are affected?

angular2@2.0.0-rc5, angular-cli@1.0.0-beta.10, @angular2-material@2.0.0-alpha-7-3

Is there anything else we should know?