This site is a preview of changes to webdev.dartlang.org for Angular 5.0.0-alpha+12 and Dart 2. To see the documentation completion status, view issue #1369. Important: The AngularDart analyzer still requires new and const, even though those keywords are optional in Dart 2. Until issue #1313 is closed, continue to use new and const. Polymer The following documentation describes how to use Polymer in Dart programs: Polymer Dart Developer Guide Dart Academy Polymer tutorials Archive of dartlang.org/polymer-old/ For information on other libraries available for Dart, see the web library overview.