To work on Dart code in the SDK repo, we recommend either IntelliJ Community Edition or IntelliJ Ultimate.
To open the sdk repo using IntelliJ, choose File
> Open...
and select the <sdk>/client/idea
directory.
To open from the command-line, type:
idea <sdk>/client/idea
This depends on having previously set up the IntelliJ command-line launcher. To do this, from the Tools
menu, select Create Command-line Launcher...
.