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.
• Family and typed-predicate filtering. Mute BLoCs without formatting caller-owned objects.
• Zero configuration. Set Bloc.observer and the rest is done.

Install

dependencies:
  flutter_bloc: ^8.0.0
  ispectify: ^7.0.0-dev3
  ispectify_bloc: ^7.0.0-dev3

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 event/state payloads are written to trace meta. Full bounded payloads are captured and redacted by default. The compact preset keeps lifecycle visibility while replacing values with coarse structural labels such as String, int, List, or Map.

const settings = ISpectBlocSettings(
  printEvents: true,
  printTransitions: true,
  printChanges: true,
  printCreations: true,
  printClosings: true,
  printCompletions: true,
  printErrors: true,
  printEventFullData: true,
  printStateFullData: true,
  enableRedaction: true,
);

Presets

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

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

ISpectBlocObserver(settings: ISpectBlocSettings.compact);

Filtering noisy blocs

ISpectBlocObserver(
  // Pattern filters see only Bloc, Cubit, or BlocBase.
  filters: ['Cubit'],

  // Use explicit type checks when an exact application class must be muted.
  filterPredicate: (candidate) =>
      candidate is AnalyticsBloc || candidate is MetricsCubit,

  settings: ISpectBlocSettings(
    // Or skip individual events / transitions / changes by inspecting them.
    eventFilter: (bloc, event) => event is! HeartbeatEvent,
  ),
);

Data redaction

Sensitive data is masked before it reaches logs or observers. Redaction is on by default. The built-in rules cover auth headers, tokens, passwords, API keys, cookies, common PII (SSN, passport, driver's license), financial data (credit cards, IBAN), and phone numbers.

The default policy is a single source of truth. Configure it once and core logs, traces, persistence, network and database adapters, BLoC and Riverpod observers, supported exports, clipboard helpers, and cURL generation resolve it when each diagnostic operation runs.

Redaction works best paired with deliberate capture. Use the integration's metadataOnly() or compact preset when payload values are unnecessary, and register project-specific keys for the business identifiers only your application understands.

Global configuration

import 'package:ispectify/ispectify.dart';

ISpectRedaction.configure(
  service: RedactionService(
    additionalSensitiveKeys: {
      'x-custom-secret',
      'internal_token',
    },
    additionalSensitiveKeyPatterns: [
      RegExp(r'my_app_secret_\w+', caseSensitive: false),
    ],
    fullyMaskedKeys: {'filename'},
    placeholder: '***',
    visibleEdgeLength: 3,
  ),
);

additionalSensitiveKeys and additionalSensitiveKeyPatterns extend the built-in policy. Use sensitiveKeys or sensitiveKeyPatterns only when you intentionally want to replace the corresponding defaults:

final replacementPolicy = RedactionService(
  sensitiveKeys: {
    'x-custom-secret',
    'internal_token',
  },
  sensitiveKeyPatterns: [
    RegExp(r'my_app_secret_\w+', caseSensitive: false),
  ],
);

Flutter apps can pass the same policy as ISpect.run(redactionService: ...); ISpect.dispose() restores the policy that was active before that run. An explicit RedactionService supplied to one integration stays local and takes precedence over the global policy. Existing integrations without an explicit service pick up later global reconfiguration. The policy is scoped to the current Dart isolate.

Local exceptions

final redactor = RedactionService(
  ignoredKeys: {'mobile', 'platform_token'},
  ignoredValues: {'<test-token>', 'public-api-key'},
);

Disabling

ISpectRedaction.configure(enabled: false) is the global content-masking opt-out. Each interceptor also accepts enableRedaction: false on its settings object for a local opt-out. Size limits, non-executing snapshots, private-storage checks, and the compile-time ISPECT_ENABLED gate remain enforced.

Only disable redaction in isolated local or deterministic test environments. Exported sessions and observer events should be handled according to the data they contain.

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	Provider-agnostic WebSocket capture (any client) 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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