This package describes the dart:ui library, which is the interface between Dart and the Flutter Engine. This package also contains a number of Flutter shell binaries that let you run code that uses the dart:ui library on various platforms.
Add this to your package's pubspec.yaml file:
dependencies: sky_engine: ^0.0.99
You can install packages from the command line:
$ pub get
Alternatively, your editor might support
Check the docs for your editor to learn more.