The Dart project is an exciting new initiative from Google that helps you build and maintain large structured modern web apps. It comes with all batteries included, including a comprehensive library, rich Eclipse and JetBrains IDE's, built-in debugging in Dartium and Chrome (with source maps) and is being developed by many of the top talent behind Googles world-leading V8 JavaScript engine and the comprehensive GWT toolkit.
See Dart ServiceStack Reference for a complete end-to-end Typed solution for consuming ServiceStack Services from any of Dart's Flutter, Dart VM, AngularDart and Web platforms.