See https://pub.dev/packages/context_watch

Usage

Add MobxContextWatcher.instance to additionalWatchers of ContextPlus.root:

ContextPlus.root(
  additionalWatchers: [
    MobxContextWatcher.instance,
  ],
  child: ...,
);

Observe MobX Observable with Observable.watch(context) or Observable.watchOnly(context, () => ...), without wrapping anything with Observer or subclassing the ObserverStatelessWidget:

final _counter = Observable(0);

class Example extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final counter = _counter.watch(context);
    return Text('Counter: $counter');
  }
}