nstater 0.0.4

NStater is a minimal and fast way to manage state in Flutter. You control the lifecycle of controllers and reactive values yourself, using your own types and subscriptions.

NStater — lightweight state management with zero dependencies

NStater is a minimal and fast way to manage state in Flutter. You control the lifecycle of controllers and reactive values yourself, using your own types and subscriptions.

📦 Features

• NVar — a typed reactive variable that notifies listeners about changes
• NField — a widget that listens to an NVar and rebuilds only when the value actually changes
• NController — a base state controller class
• NState — widget that creates a controller and manages its lifecycle
• No dependency on ChangeNotifier/ValueNotifier
• You can combine multiple NVar щк NController instances on a single screen

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🔍 Quick API

NVar<T>

Reactive value with subscribe / unsubscribe:

final n = NVar<int>(0);
n.addListener((v) => print('new value: $v'));
// new value: 0
n.value = 42;
print(n.value);
// 42

NField<T>

A widget that listens to an NVar and rebuilds only when the value actually changes:

NField<int>(
  data: counter,
  builder: (v) => Text('$v'),
);

NController

Base controller class with subscriptions and no dependencies:

class MyController extends NController {
  int count = 0;
  void inc() {
    count++;
    notify();
  }
}

NState<C extends NController>

Builds UI based on a controller and automatically creates and disposes it:

NState<MyController>(
  create: () => MyController(),
  builder: (c) => Text('${c.count}'),
);