oref 2.0.2

A reactive state management library for Flutter that adds magic to any Widget with signals, computed values, and effects powered by alien_signals.

2.1.0

Status: Unreleased

💥 BREAKING CHANGES

Remove GlobalSignals.* APIs

• GlobalSignals.create(value) -> signal(null, value)
• GlobalSignals.computed(getter) -> computed(null, getter)
• GlobalSignals.effect(callback) -> effect(null, callback)
• GlobalSignals.effectScope(callback) -> effectScope(null, callback)

2.0.2

Status: Released (2025-09-23)

✨ NEW FEATURES

Reactive Primitives

Now, signal/computed/effect/effectScope make reactive primitives

// After
final count = GlobalSignals.create(0);

// Now
final count = signal(null, 0);

🔧 IMPROVEMENTS

• Deprecate GlobalSignals in favor of direct imports

2.0.1

• Fix ReactiveList.add implementation for non-nullable elements

2.0.0

💥 BREAKING CHANGES

This is a complete rewrite of Oref with breaking changes to most APIs. The new version provides better performance, cleaner APIs, and improved developer experience.

API Changes

• useSignal → signal: Replace useSignal(context, value) with signal(context, value)
• useComputed → computed: Replace useComputed(context, computation) with computed(context, computation)
• useEffect → effect: Replace useEffect(context, callback) with effect(context, callback)
• useEffectScope → effectScope: Replace useEffectScope(context) with effectScope(context)
• Widget Effect Hooks: getWidgetEffect and getWidgetScope renamed to useWidgetEffect and useWidgetScope
• Memoization: resetMemoized renamed to resetMemoizedFor for clarity
• Reactive Access: Direct signal calls now supported in widgets (e.g., Text('${count()}')), replacing the need for SignalBuilder in many cases

Removed Features

• Removed entire old signal system implementation (848 lines deleted)
• Removed global async computed APIs (createGlobalAsyncComputed, useAsyncComputed)
• Removed legacy primitive operators
• Removed old async utilities and global signal management

✨ NEW FEATURES

Reactive Collections

• ReactiveList<T>: Reactive wrapper for List operations with automatic dependency tracking
• ReactiveMap<K, V>: Reactive wrapper for Map operations with automatic dependency tracking
• ReactiveSet<T>: Reactive wrapper for Set operations with automatic dependency tracking
• Factory Constructors: Support for widget-scoped reactive collections via .scoped() constructors
• Global Collections: Support for global reactive collections via default constructors

Enhanced Widget Integration

• SignalBuilder: New widget for explicit reactive UI updates
• SignalBuildContext Extension: Adds context.watch() method for reactive value access
• Direct Signal Access: Signals can now be called directly in widget build methods
• Improved Widget Effects: Better automatic rebuild triggering when signal dependencies change

New Utilities

• GlobalSignals: Utility class for managing global signal instances
• batch() and untrack(): Export utility functions from alien_signals for advanced use cases
• Enhanced Ref System: Improved Ref, StateRef, and WidgetRef utilities moved to dedicated utils module

🔧 IMPROVEMENTS

Performance

• Built on alien_signals v0.5.3 for optimal performance
• Removed global mutable state in computed values
• Improved memoization with better scope handling and lifecycle management
• Simplified effect and scope management for reduced overhead

Developer Experience

• Better Documentation: Comprehensive inline documentation with examples for all APIs
• Cleaner API Surface: More intuitive function names following React hooks conventions
• Simplified Widget Integration: Signals can be used directly in widget build methods without complex setup
• Better Error Handling: Improved assertions and error messages for memoization and widget context usage
• Organized Code Structure: Reorganized exports and moved utilities to separate directories for better maintainability

Architecture

• Complete Rewrite: Built from ground up with lessons learned from v1.x
• Widget Effect System: New widget effect pattern for consistent scope management
• Improved Memoization: Better widget-scoped memoization with proper lifecycle management
• Modular Design: Clear separation between core primitives, reactive collections, utilities, and widgets
• Type Safety: Enhanced type safety throughout the API surface

🔄 MIGRATION GUIDE

Basic Signal Usage

// v1.x
final count = useSignal(context, 0);

// v2.0
final count = signal(context, 0);

Computed Values

// v1.x
final doubled = useComputed(context, () => count.value * 2);

// v2.0
final doubled = computed(context, () => count() * 2);

Effects

// v1.x
useEffect(context, () {
  print('Count: ${count.value}');
});

// v2.0
effect(context, () {
  print('Count: ${count()}');
});

Widget Reactivity

// v1.x - Required SignalBuilder or manual tracking
SignalBuilder(
  signal: count,
  builder: (context, value, _) => Text('Count: $value'),
)

// v2.0 - Direct access supported
Text('Count: ${count()}')
// or explicit watching
Text('Count: ${context.watch(() => count())}')
// or SignalBuilder
SignalBUilder(
  getter: count,
  builder: (context, value) => Text('Count: $value'),
);

Reactive Collections

// v2.0 - New feature
final items = ReactiveList<String>(['a', 'b', 'c']);
final itemsScoped = ReactiveList.scoped(context, ['a', 'b', 'c']);

🗂️ PACKAGE STRUCTURE

The new version features a well-organized package structure:

• Core: signal, computed, effect, effectScope, useMemoized, widget effects
• Reactive: Reactive mixin, ReactiveList, ReactiveMap, ReactiveSet
• Utils: batch, untrack, GlobalSignals, Ref utilities, SignalBuildContext
• Widgets: SignalBuilder for explicit reactive UI

⚡ PERFORMANCE

• Upgraded to alien_signals v0.5.3 for optimal performance
• Removed global state management overhead
• Streamlined memoization and effect tracking
• More efficient widget rebuild patterns

📦 DEPENDENCIES

• alien_signals: ^0.5.3 (upgraded from ^0.4.2)
• Flutter SDK: ^3.8.1 (maintained)

---

1.1.3

• pref: Refactor binding system to use LinkedBindingNode hierarchy

1.1.2

• Not returning use* hooks as expected

1.1.1

• fix: Nested hooks cause context binding to be reset

1.1.0

• refactor: refactor core code to make it easier to maintain and less redundant
• refactor: Remove createGlobalAsyncComputed and useAsyncComputed
• feat: createGlobalSignal supports automatic trigger of Widget
• feat: createGlobalComputed supports automatic trigger of Widget
• feat: Added createGlobalAsyncResult and useAsyncResult to replace createGlobalAsyncComputed/useAsyncComputed

1.0.0

Added

• Initial release of Oref - A reactive state management library for Flutter
• Core reactive primitives:
  • useSignal - Create reactive signals with automatic dependency tracking
  • useComputed - Create computed values that update when dependencies change
  • useEffect - Create side effects that run when dependencies change
  • useEffectScope - Create effect scopes for managing multiple effects
  • ref - Convert non-reactive Widget parameters to reactive signals
• Global APIs for use outside of widgets:
  • createGlobalSignal - Create global signals
  • createGlobalComputed - Create global computed values
  • createGlobalEffect - Create global effects
  • createGlobalEffectScope - Create global effect scopes
  • createGlobalAsyncComputed - Create global async computed values
• Async computed values with useAsyncComputed
• Batching utilities with batch function
• untrack utility for reading signals without creating dependencies
• Built-in type signal operators for enhanced type safety
• Automatic Widget rebuilding integration
• Performance optimizations with alien_signals backend

Features

• 🚀 High performance reactive system built on alien_signals
• 🪄 Magic in widgets - add reactivity to any existing Widget seamlessly
• 🔄 Automatic dependency tracking and updates
• 🎯 Full type safety with Dart's strong type system
• 🔧 Flexible integration with any Flutter widget
• 📦 Lightweight with minimal overhead

Dependencies

• Flutter SDK ^3.8.1
• alien_signals ^0.4.2