ispectify_bloc plugs the bloc and flutter_bloc ecosystem into the ISpect toolkit. One BlocObserver forwards every event, state change, transition, and error through the log pipeline, so the whole state-management timeline shows up in the log viewer.

• Events, transitions, errors, and create/close lifecycle hooks.
• Per-type filtering. Mute specific Bloc or Cubit classes without touching their code.
• Zero configuration. Set Bloc.observer and the rest is done.

Install

dependencies:
  flutter_bloc: ^8.0.0
  ispectify: ^5.2.0-dev.10
  ispectify_bloc: ^5.2.0-dev.10

Quick start

import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:ispect/ispect.dart';
import 'package:ispectify_bloc/ispectify_bloc.dart';

ISpect.run(
  () => runApp(const MyApp()),
  onInit: () {
    Bloc.observer = ISpectBlocObserver(logger: ISpect.logger);
  },
);

The observer emits logs under the bloc-event, bloc-transition, bloc-state, bloc-create, bloc-close, bloc-done, and bloc-error log-type keys, each with a dedicated icon, palette entry, and localized description in the log viewer. Filter them in the debug panel or through ISpectSettingsState.disabledLogTypes.

Settings

ISpectBlocSettings controls which lifecycle events are captured and whether raw event/state payloads are written to trace meta. Payload capture is off by default — runtime types are emitted instead, so it is safe to leave the observer enabled in shared environments.

const settings = ISpectBlocSettings(
  printEvents: true,
  printTransitions: true,
  printChanges: true,
  printCreations: true,
  printClosings: true,
  printCompletions: true,
  printErrors: true,
  printEventFullData: false, // raw event payloads off by default
  printStateFullData: false, // raw state payloads off by default
  enableRedaction: true,     // route meta values through RedactionService when set
);

Presets

// Logs disabled entirely.
ISpectBlocObserver(settings: ISpectBlocSettings.silent);

// Skip per-change / per-completion noise — keeps creations, transitions, errors.
ISpectBlocObserver(settings: ISpectBlocSettings.minimal);

// Full state payloads on transitions and changes.
ISpectBlocObserver(settings: ISpectBlocSettings.verbose);

Filtering noisy blocs

ISpectBlocObserver(
  // Drop everything for blocs whose runtime type matches one of these patterns.
  filters: [RegExp(r'AnalyticsBloc'), 'MetricsCubit'],
  settings: ISpectBlocSettings(
    // Or skip individual events / transitions / changes by inspecting them.
    eventFilter: (bloc, event) => event is! HeartbeatEvent,
  ),
);

The ISpect toolkit

ISpect is a modular monorepo. Pick the packages your project needs. Each one works on its own.

Package	What it does
ispect	Flutter UI: debug panel, log viewer, navigation observer, inspector integration.
ispect_layout	Visual layout inspector with sizes, constraints, decorations, compare mode, and a color picker.
ispectify	Pure-Dart logging core: typed log entries, filtering, tracing, observers.
ispectify_dio	Dio HTTP interceptor with automatic redaction.
ispectify_http	http package interceptor with automatic redaction.
ispectify_ws	WebSocket traffic capture with automatic redaction.
ispectify_db	Database operation tracing for SQL, ORMs, and KV stores.
ispectify_bloc	BLoC event, state, transition, and error observer.
ispectify_riverpod	Riverpod provider add, update, dispose, and failure observer.

Contributing

Contributions are welcome. See CONTRIBUTING.md for guidelines, and open issues or pull requests at the ISpect repository.

License

MIT. See LICENSE.

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