Maybe I'm missing something, but yes, I think so. Dart version 0.8.10.3_r29803.

pubspec.yaml:

name: test1 dependencies: browser: any angular: git: https://github.com/angular/angular.dart.git

test1.dart:

import 'package:angular/angular.dart'; main() => ngBootstrap();

dart2js launch => builds test1.dart.js, about 5MB, 142,749 loc.