⚡ bloc_signals_bloc "With the rigor of BLoC and the flex and speed of Signals" Bidirectional interoperability adapters and extensions connecting BlocSignal / CubitSignal state containers with classic package:bloc and flutter_bloc.

Supports both bloc 8.x and bloc 9.x out of the box.

🌐 Ecosystem Packages #

The BlocSignal monorepo consists of 11 modular packages:

Package	Version	Description
bloc_signals		Core pure Dart reactive state primitives bridging BLoC & Signals
bloc_signals_flutter		Flutter UI bindings, providers, builders, listeners & selectors
bloc_signals_bloc		Classic BLoC 8/9 interop adapters & bidirectional event bridges
bloc_signals_riverpod		Bidirectional Riverpod 2/3 interop adapters & provider extensions
bloc_signals_jaspr		Jaspr web component integration and state binding for BlocSignal
bloc_signals_hydrate		Automated synchronous local state persistence & hydration
bloc_signals_replay		Undo & redo state history tracking for CubitSignal and BlocSignal
bloc_signals_otel		OpenTelemetry tracing and span generation for state transitions
bloc_signals_devtools		Universal DevTools telemetry observer using dart:developer
bloc_signals_test		Declarative unit testing utilities (blocSignalTest)
bloc_signals_lint		Custom analyzer lint rules & automated IDE quick-fixes

⚡ Key Features #

• 🔄 Bidirectional classicBloc.toBlocSignal(): Convert any classic Bloc into a ClassicBlocSignal exposing synchronous reactive signal reading (.stateValue / .state) and mutation via .add(event).
• 🔀 Bidirectional classicCubit.toBlocSignal(): Convert any classic Cubit into a ClassicCubitSignal exposing typed .cubit method access alongside reactive signals.
• ⚡ Reverse blocSignal.toClassicBloc() / .toClassicCubit(): Drop modern streamless BlocSignal containers directly into legacy flutter_bloc UI widgets (BlocBuilder, BlocListener, BlocConsumer, BlocSelector) with zero widget rewrites.
• 🎯 Eliminate Stream Delay: Provide instant, glitch-free synchronous UI rebuilds on classic Blocs without microtask queue latency.
• 🔒 Lifecycle & AutoClose: Configurable autoClose: true for clean scoped disposal.

🚀 Getting Started #

Add bloc_signals_bloc to your pubspec.yaml:

dependencies:
  bloc: ^8.1.0 # or ^9.0.0
  bloc_signals: ^1.0.0
  bloc_signals_bloc: ^1.0.0

💡 Quick Examples #

1. Classic BLoC → BlocSignal (Bidirectional Read & Mutate) #

import 'package:bloc_signals_bloc/bloc_signals_bloc.dart';

final classicBloc = CounterBloc();

// Convert classic Bloc into a synchronous BlocSignal:
final blocSignal = classicBloc.toBlocSignal();

// 1. Synchronous reactive read:
print(blocSignal.stateValue);

// 2. Dispatch events directly through the signal container:
blocSignal.add(IncrementEvent());

2. Modern BlocSignal → Classic BLoC (Legacy UI Compatibility) #

import 'package:bloc_signals_bloc/bloc_signals_bloc.dart';

final modernBloc = ModernCounterBloc();

// Adapt modern BlocSignal into a classic Bloc for legacy widgets:
final classicAdapter = modernBloc.toClassicBloc();

// Consumed directly by legacy flutter_bloc widgets:
BlocBuilder<BlocSignalToClassicBloc<CounterEvent, int>, int>(
  bloc: classicAdapter,
  builder: (context, state) => Text('$state'),
);

🔄 Lifecycle Semantics #

🤖 AI Coding Assistant Skill #

This package is supported by an official pre-packaged AI Coding Skill representing architectural best practices, migration patterns, and bidirectional state bridge rules for BlocSignal.