First, you will need to add a git dependency on pub to your pubspec.yaml:
dev_dependencies:
pub:
git:
url: https://github.com/dart-lang/pub/
ref: master
Then, you can just run pub run pub serve --compiler=dartdevc
and it will use ddc instead of dart2js.
A couple notes:
- This requires the latest dev sdk
- Hasn't been tested really on windows