I am currently working on a Flutter project and exploring the new solid_signals state management package. My goal is to achieve fine-grained reactivity and surgical UI rebuilds without relying heavily on BuildContext or high-boilerplate frameworks like Provider and Riverpod.

I have successfully created a basic state machine using a global reactive variable, but I want to make sure I am following the absolute best practices of this package regarding widget lifecycle and deep widget tree performance.

Here is the exact implementation of my counter screen that I am testing:

import 'package:flutter/material.dart';
import 'package:solid_signals/solid_signals.dart';

// Creating a global mutable signal
final counter = Signal(0);

class CounterScreen extends StatelessWidget {
  const CounterScreen({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('Signals Test')),
      body: Center(
        // Using the Observe wrapper to target specific text rebuilds
        child: Observe(() => Text(
          'Count: ${counter.value}',
          style: const TextStyle(fontSize: 24),
        )),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () => counter.value++,
        child: const Icon(Icons.add),
      ),
    );
  }
}