coderx

A lightweight and reactive state management system for Flutter. Easily manage global or local state, handle async states, computed values, and react to changes with builders, consumers, listeners, and observers — all with simple Dart classes.

🚀 Features

• ✅ Simple and lightweight
• 🔄 Reactive updates with ChangeNotifier
• 💥 Built-in builder, listener, observer, and consumer widgets
• 📦 Global or local state
• 🌍 App config (theme, locale) management
• 🧮 Computed values (CoderComputed)
• 🔁 Async state (CoderAsync)

📦 Installation

Add this to your pubspec.yaml:

dependencies:
  coderx: ^latest_version

🛠️ Basic Usage

🔹 Import

import 'package:coderx/coderx.dart';

🔹 Create a State

final counter = CoderState<int>(0);

🔹 Use CoderConsumer to rebuild on state change

CoderConsumer<int>(
  state: counter,
  builder: (context, count) => Text('Count: $count'),
);

🔹 Update State

counter.value++;

🧱 Multi-State Consumption

Use CoderMultiConsumer to listen to multiple states.

CoderMultiConsumer(
  states: [themeMode, locale],
  builder: (context) {
    return MaterialApp(
      themeMode: themeMode.value,
      locale: locale.value,
      home: const HomeScreen(),
    );
  },
);

🎧 Listen for State Changes (Side Effects)

CoderListener<String?>(
  state: errorState,
  listener: (context, value) {
    if (value != null) {
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(content: Text("Error: $value")),
      );
    }
  },
  child: const HomeScreen(),
);

🧮 Computed State

final username = CoderState<String>("Guest");

final welcomeMessage = CoderComputed<String>(
  compute: () => "👋 Welcome, ${username.value}!",
  dependencies: [username],
);

🔄 Async State

final userAsync = CoderAsync<List<String>>();

Future<void> loadUsers() async {
  await userAsync.run(() async {
    await Future.delayed(Duration(seconds: 2));
    return ['Alice', 'Bob', 'Charlie'];
  });
}

// Display UI based on async state
CoderConsumer<CoderAsyncState<List<String>>>(
  state: userAsync.state,
  builder: (context, async) {
    if (async.isLoading) return CircularProgressIndicator();
    if (async.hasError) return Text("Error: ${async.error}");
    if (async.hasData) return Column(
      children: async.data!.map((e) => Text(e)).toList(),
    );
    return SizedBox();
  },
);

#### ⚙️ AppConfig (Global States)
```dart
class AppConfig {
final themeMode = CoderState<ThemeMode>(ThemeMode.light);
final locale = CoderState<Locale>(const Locale('en'));
final counter = CoderState<int>(0);
final username = CoderState<String>('Guest');
final loading = CoderState<bool>(false);
final error = CoderState<String?>(null);
final userList = CoderState<List<String>>([]);

late final welcomeMessage = CoderComputed<String>(
  compute: () => "👋 Welcome, ${username.value}!",
  dependencies: [username],
);

static final AppConfig _instance = AppConfig._internal();
factory AppConfig() => _instance;
AppConfig._internal();
}

final config = AppConfig();

🚀 About Me

👨‍💻 Senior Flutter Developer
💡 One principle I always code by:
"Don’t just develop — Develop Innovative"

📝 Author Profile

Support

Feel free to contribute or raise issues. For support, email thoriyaprahalad@gmail.com