There is vulcanize like tool for polymer.dart (done by polymer transformer), that nicely puts all the imported components inline and makes it easy to serve the app by reducing t
You can use template-cache-transformer. From it's home page:
The Template Cache Transformer generates the template cache and
optionally merges the CSS and HTML of AngularDart components into
a hosting Web page.
AngularDart has the template_cache_generator which creates a Dart file to pre-populate Angular's template cache.
As far as I know, we have not done to work to include the template cache generator in the Angular transformer group. There is no technical reason why it can't be there.