Visit https://lsif.dev/ to learn about LSIF.
Required tools:
Install dependencies:
cd $HOME/your-dart-project
pub get
Run lsif-dart:
cd $HOME
git clone https://github.com/sourcegraph/lsif-dart
cd lsif-dart
pub get
pub run crossdart --input $HOME/your-dart-project
lsif-dart builds off of crossdart for language analysis and adds an LSIF output mode.