go_router_modular 5.5.2

Modular Routing and Dependency Injection for Flutter with GoRouter. Features event-driven architecture for seamless module communication and micro-frontend support.

Unreleased

5.5.2

• Documentation: reworked the README for a cleaner, pub.dev-friendly layout — added an Installation section and a step-by-step Quick Start (configure, compose modules, define a feature module, navigate), a features table, and a collapsible events add-on section. The layout no longer relies on centering, which pub.dev strips.
• Fixed: the go-router-modular Agent Skill was silently skipped by the skills CLI because a : inside its SKILL.md frontmatter description produced invalid YAML. The description was corrected so the skill is discovered and installable again.

5.5.0

• Route-state reads consolidated on the Modular facade with better names. The read utilities moved off the BuildContext extension and onto the facade, following the ...Of(context) convention. Beyond path and parameters, there is now explicit access to the useful go_router utilities (query params, uri, location, and typed extra) from a single entry point:

  final state    = Modular.routerStateOf(context);        // the GoRouterState
  final path     = Modular.currentPathOf(context);        // the current path
  final id       = Modular.pathParamOf(context, 'id');    // a path parameter
  final params   = Modular.pathParamsOf(context);         // all path parameters
  final ref      = Modular.queryParamOf(context, 'ref');  // a query parameter
  final queries  = Modular.queryParamsOf(context);        // all query parameters
  final uri      = Modular.currentUriOf(context);         // the current Uri
  final location = Modular.currentLocationOf(context);    // the current location
  final payload  = Modular.extraOf<MyPayload>(context);   // the typed extra
  

  The go_router utilities (GoRouterState, context.go, context.push, …) are still re-exported by the package barrel, so you can use them directly by importing only package:go_router_modular/go_router_modular.dart.

  Deprecations (still functional, will be removed in a future major release):

  • Extension: context.getPathParam('id') → Modular.pathParamOf(context, 'id'); context.getPath → Modular.currentPathOf(context); context.state → Modular.routerStateOf(context).
  • Facade: Modular.getCurrentPathOf(context) → currentPathOf(context); Modular.stateOf(context) → routerStateOf(context).

5.4.0

• Simplified EventModule composition; unused event APIs removed. The composition mechanism based on eventImports() + ModularEventListener was removed (it was dead code, with no consumers). To compose another module's listeners, call AnotherEventModule().listen() synchronously inside your own listen() — the child's listeners inherit the host's lifecycle (they are disposed together with it, with no duplication when recreated).

  class EventModuleA extends EventModule {
    @override
    void listen() {
      on<EventFromA>((event, context) { /* ... */ });
      EventModuleB().listen(); // direct composition
    }
  }
  

  In addition, the listening logic is no longer exposed as the public EventListenerMixin mixin — it was incorporated directly into EventModule (which is still a Module). The only public mixin in the events subsystem is now ModularEventMixin (for State<StatefulWidget>).

  Migration:

  • Remove eventImports() overrides and any use of ModularEventListener; move the on<T> calls into the listen() of an EventModule and compose via AnotherEventModule().listen().
  • If you referenced EventListenerMixin directly, use EventModule instead.

5.3.0

Added

• copyWith on the modular router. Override individual GoRouter options at the point where the router is consumed, reusing everything passed to Modular.configure(...). Useful when ModularApp.router doesn't expose an option you need — for example attaching a NavigatorObserver:

  MaterialApp.router(
    routerConfig: Modular.routerConfig.copyWith(
      observers: [MyAnalyticsObserver()],
    ),
    builder: (context, child) => ModularLoader.builder(context, child),
  );
  

  Overridable options include observers, redirect, refreshListenable, errorBuilder, errorPageBuilder, redirectLimit, navigatorKey, restorationScopeId, and more. The derived router is memoized, so widget rebuilds reuse the same instance and navigation state is preserved.

Changed

• Bumped the go_router constraint to ^17.3.0, pulling in the chained top-level redirect resolution fix (17.2.1) and the pop() + onExit stale-configuration fix (17.2.2).

5.2.0

Breaking

• Untyped factory binds no longer auto-resolve through supertypes. Applies to any supertype relationship — interfaces, abstract classes, concrete superclasses, and mixins — not just interfaces. The previous compatibility search probed every factory bind in bindsMap to type-check it against the requested supertype, invoking the factory's constructor (with all its side effects: event publication, stream subscription, HTTP calls, etc.) and discarding the resulting instance. Production traces showed cubits being silently instantiated multiple times per session as a byproduct of unrelated get<T>() calls. The compatibility search now skips factory binds entirely; only singletons (whose probe instance is cached and reused) participate. Migration:

  // Before — works by accident, instantiates ServiceImpl as a probe side-effect
  i.addFactory((i) => ServiceImpl());
  i.get<IService>(); // ✅ resolved
  
  // After — explicit, no probe, zero side effects until first real get
  i.addFactory<IService>((i) => ServiceImpl());
  i.get<IService>(); // ✅ resolved via Strategy 2 (direct lookup)
  
  // Or, if singleton semantics are acceptable:
  i.addSingleton((i) => ServiceImpl());
  i.get<IService>(); // ✅ resolved (singleton cached, probe-safe)
  

  Direct lookups by the registered concrete type (get<ServiceImpl>()) still work for untyped factories — only the supertype auto-discovery is removed.

Fixed

• Phantom factory instances during interface lookup (the breaking change above is the fix). Reproduction: with 4 factory binds in a module, every unrelated get<IUnregistered> instantiated all 4 (running their constructors). After 100 lookups in a session, ~400 phantom Cubit/Service instances leaked — each potentially opening WebSockets, subscribing to streams, or firing events. Now: zero phantom invocations.
• Cross-type circular dependency now surfaces a clear error. A → B → A previously fell into the global hasBlockedBinds bypass and was masked as Bind not found for type "A" at the deepest probe level. The validation bypass is now tightened to the specific self-reference case (addFactory<I>((i) => i.get())) using a typed (bind, requestedType) invocation stack. Cross-type cycles now throw ModularException: Circular dependency detected while resolving type "A". Dependency chain: A -> B -> A.
• BindRegistry.register indexes typed binds under the declared type. Bind.factory<IService>((i) => ServiceImpl()) previously stored the bind only under ServiceImpl (the discovered runtime type), making get<IService> miss Strategy 2 and depend on probing. Typed binds now occupy bindsMap[IService] directly; the discovered runtime type is also indexed for get<ServiceImpl> lookups.

Improved

• BindSearchProtection is re-entrant safe. Replaced Set<Object> _blockedBinds with a counter-backed Map<Object, int> so nested invocations of the same bind don't prematurely "unblock" each other on the first pop.
• Single helper for factory invocations. Extracted BindLocator._withInvocation(bind, requestedType, action) — every factory call goes through here, eliminating the previous four-way duplication of pushInvocation / try / finally / popInvocation.

---

5.1.0

Added

• Stateful shell branch transitions: StatefulShellBranchTransitions helpers (e.g. withGoTransition, fade presets) so bottom tabs/branches can reuse the same transition style as modular GoRoutes.

Improved

• Dependency injection — batch registration: Typed binds (Bind<T>) are now indexed up front in registerBatch, so any bind in the same batch can resolve siblings in any declaration order. commitBatch runs in three phases: materialize singletons, propagate cached instances to duplicate Bind objects, then fall back to deferred resolution for Bind<Object> registrations.
• Dependency injection — code quality: Extracted _writeToCanonicalSlot to centralise the dual-map invariant (bindsMap for unkeyed, bindsMapByKey for keyed binds). Replaced the ambiguous bool _handleExistingBind with a _SlotConflictResolution enum. Renamed _pendingBatch to _uncommittedBatch. Swallowed registration errors now surface via dart:developer.log when debugLogModular is enabled.

Fixed

• Singleton identity across interface lookups: BindLocator._searchCompatibleBind now reuses the canonical bind when resolving through an interface, preventing a new factory call on every Injector.get<IFoo>() call.
• Self-referential interface factory (addFactory<I>((i) => i.get())): The locator now detects recursive resolution for the same type and skips the executing bind, falling through to the concrete implementation. Previously this threw "Type IFoo is already being searched".
• ConcurrentModificationError during interface lookup: _searchCompatibleBind now iterates a snapshot of bindsMap.entries instead of the live view, making in-loop writes safe under nested resolution.
• Singleton instantiated multiple times via imports: Duplicate Bind objects created by re-imported modules now receive the cached instance from the already-registered bind, preventing repeated factory calls.
• Injector.get<IService>() after typed registration: A singleton registered with an explicit generic (e.g. i.addSingleton<IAuthApi>(...)) is now reachable through both the interface and the concrete runtimeType.
• Keyed + unkeyed singleton on the same type: bindsMap[type] now holds only the unkeyed bind; keyed binds live exclusively in bindsMapByKey, making Injector.get<IClient>() order-independent.

---

5.0.6

Fixed

• Duplicate singleton construction via imports: _collectImportedBinds created new Bind objects with cachedInstance == null on every registration pass. commitBatch now propagates cachedInstance to duplicate binds before downstream methods run, preventing 2× extra factory calls.
• Orphaned singleton instances: When two imported modules declare the same type, commitBatch now checks _isSingletonAlreadyRegistered before calling factoryFunction, completely preventing duplicate factory calls and leaked instances (open streams, duplicate subscriptions).

---

5.0.5

Fixed

• Dependency injection: Singleton and lazySingleton constructors were called multiple times during module registration. The system now correctly reuses the cached instance after the first creation.

---

5.0.4

Fixed

• onExit in ChildRoute: Fixed propagation of the onExit callback across all route creation paths.

---

5.0.3

Added

• Detailed error messages: Missing dependency errors now include which component made the request and a full dependency chain (e.g. A ➔ B ➔ C).
• Circular dependency detection: Detects infinite recursion during bind resolution and surfaces a clear, actionable error message.
• Safer resource cleanup: CleanBind now handles dispose, close, and cancel more robustly, with safe fallback for NoSuchMethodError.

---

5.0.2

Improved

• Dependency injection: Switched from nested search to a commit-based approach for better performance.

---

5.0.1

Added

• Bind.lazySingleton: Creates singleton instances only on first access — useful for expensive resources that may not always be needed.

  i.lazySingleton<ExpensiveService>((i) => ExpensiveService());
  

• Page transitions: Built-in transition system for smooth route animations.

  • Presets: fade, slide, scale, rotate, and more.
  • Child routes automatically inherit transitions from parent modules.
  • Platform-specific styles: Cupertino (iOS/macOS) and Material (Android).
  • Chainable effects: GoTransitions.slide.toRight.withFade.

  ModuleRoute('/home', module: HomeModule(),
    transition: GoTransitions.fadeUpwards,
    duration: Duration(milliseconds: 300))
  
  ChildRoute('/details', child: (_, __) => DetailsPage(),
    transition: GoTransitions.slide.toRight.withFade)
  

---

5.0.0

Breaking Changes

• New binds API: Changed from FutureOr<List<Bind<Object>>> binds() to FutureBinds binds(Injector i). Binds are now registered via injector methods instead of returning a list.

  // Before (4.x)
  FutureOr<List<Bind<Object>>> binds() => [
    Bind.factory<ApiService>((i) => ApiService()),
    Bind.singleton<DatabaseService>((i) => DatabaseService()),
  ];
  
  // After (5.x)
  FutureBinds binds(Injector i) {
    i.add<ApiService>((i) => ApiService());
    i.addSingleton<DatabaseService>((i) => DatabaseService());
  }
  

Added

• Native injector: Removed dependency on auto_injector. Direct registration methods: i.add(), i.addSingleton(), i.addLazySingleton().
• Performance: ~4× faster dependency resolution and reduced memory overhead.
• Better error messages: Clearer type mismatch and cycle detection errors.

---

4.2.2

Improved

• Improved the dispose process to ensure proper resource release and prevent memory leaks.

---

4.2.0+4

Fixed

• Added validation to prevent overwriting already-registered singletons for the same type and key.

---

4.2.0

Added

• Event broadcasting: Modules can now broadcast events across multiple modules with improved subscription management.

Improved

• Error messages: More descriptive errors throughout the dependency injection system.

---

4.1.0

Added

• autoDisposeEventBus parameter in Modular.configure to control whether events are automatically disposed when modules are destroyed (default: true).

Fixed

• Nullable context in EventModule to handle web scenarios where context may not be available during page refreshes or redirects.

---

4.0.0

Breaking Changes

• ModularApp.router: Replaces MaterialApp.router. routerConfig is set automatically — remove it from your code.

• Async binds and imports: binds() and imports() now return FutureOr<List<T>> instead of List<T>.

  // Before (3.x)
  List<Bind<Object>> get binds => [Bind.singleton<MyService>((i) => MyService())];
  List<Module> get imports => [SharedModule()];
  
  // After (4.x)
  FutureOr<List<Bind<Object>>> binds() => [Bind.singleton<MyService>((i) => MyService())];
  FutureOr<List<Module>> imports() => [SharedModule()];
  

Added

• ModularApp.router: Extends MaterialApp.router with automatic loader display during module registration.
• ModularLoader: Built-in loading overlay with ModularLoader.show() / ModularLoader.hide() and a CustomModularLoader abstract class for full appearance customisation.

---

3.0.0

Breaking Changes

• Root route required: Modules must now declare a root ChildRoute('/') as their entry point. An assertion error is thrown if it is missing.

  List<ModularRoute> get routes => [
    ChildRoute('/', child: (_, __) => HomePage()), // required
    ChildRoute('/details', child: (_, __) => DetailsPage()),
  ];
  

---

2.0.3+1

Added

• initState and dispose lifecycle methods in modules.
• Recursive binding imports between modules.

Fixed

• Auto-dispose mechanism to ensure proper resource cleanup.

---

2.0.2+1

Added

• InternalLogs class for consistent debug output across route registration and bind management.

Fixed

• _register was not being called during route redirects, causing missing dependency injection before page construction.

Improved

• Bind registration is skipped when no redirect occurs, reducing redundant operations and log noise.