Scope a Flutter application

Create the application container before runApp, then attach it:

DiRootScope(
  container: application,
  child: const App(),
)

Create a feature Scope inside the widget tree:

DiScope(
  configure: (binder) {
    binder.bindFactory<FeaturePresenter>(
      (resolver) => FeaturePresenter(resolver.get<CatalogRepository>()),
    );
  },
  child: const FeatureScreen(),
)

Use context.di from build or didChangeDependencies when the code must follow Scope replacement. Use context.readDi for one-off callback reads. The widget that owns a container closes it when its ownership ends.