Dart-Code: Do not start the Dart analysis server from the root if Dart projects are in subfolders

This plugin always runs the analysis server from the root, resulting in a never terminating or hanging analysis in the dart-sdk. This is because the analyzer does not support analysis from the root of the dart-sdk project.

@dcharkes, thanks for the report! Generally, the use case of starting the analysis server from the root of the sdk is not supported.

@sjindel-google mentioned the Emacs plugin does not have the same issue, because it uses the .packages or pubspec.yaml files to determine from which folder to start analysis.

Would it be possible to get this behaviour in the VSCode plugin?

How to reproduce

1. clone https://github.com/dart-lang/sdk
2. open VSCode
3. open the root folder of dart-lang/sdk
4. enable Dart Code plugin

Analysis does not terminate, and generates 10000+ errors.

Expected behaviour

Analysis terminates normally (with a bunch of errors, as this is not a normal Dart project).