clean_helper #

A Dart CLI tool that scaffolds Flutter projects following Clean Architecture.

Run it from inside a Flutter project root to generate the full directory structure, boilerplate files, routing, DI, BLoC state management, and all required dependencies.

Installation #

dart pub global activate --source git https://github.com/gktirkha/clean_helper

Enable Shell Auto-completion #

clean-helper install-completion-files

Commands #

Command	Description
`clean-helper init`	Full project scaffold — run once on a new Flutter project
`clean-helper bootstrap`	`pub get` → slang → build_runner (re-bootstrap after git pull)
`clean-helper add_network_module`	Set up the network layer (Dio, Retrofit, Chucker)
`clean-helper add_auth_interceptor`	Scaffold AuthInterceptor with token refresh and wire into NetworkModule
`clean-helper add_feature <name> [--di]`	Add a new feature with clean architecture structure
`clean-helper add_repo <feature> <name> [--no_rest]`	Generate the full data layer (entity, domain repo, datasources, models, repo impl)
`clean-helper add_entity <scope> <name> [folder]`	Add an entity (domain) + freezed model (data)
`clean-helper build_runner [clean\|build]`	Run build_runner in the current project (default: build)
`clean-helper remove_feature <name>`	Remove a feature and deregister its router
`clean-helper regenerate_router`	Scan all features on disk and regenerate `app_router_module.dart`
`clean-helper add_vscode_config`	Generate `.vscode/extensions.json`, `launch.json`, and `tasks.json`
`clean-helper generate_localizations`	Generate locales using slang
`clean-helper generate_tools [--overwrite]`	Generate `tools/` scripts in the current project
`clean-helper list_mono_repo_apps`	List all apps declared in `pubspec.yaml` under `clean-helper.mono_repo_apps`

<scope> for add_entity is either core or a feature name (e.g. home, auth). add_repo only supports feature scope.

Usage #

`init` — Bootstrap a Flutter project #

Run this once from the root of a new Flutter project:

cd my_flutter_app
clean-helper init

# Optional flags (can be combined)
clean-helper init --network           # -n  also set up the network layer
clean-helper init --di                # -d  generate a DI module for the home feature
clean-helper init --auth-interceptor  # -a  scaffold auth interceptor (implies --network)
clean-helper init --tools             # -t  generate tools/ scripts

What it does (in order):

Validates pubspec.yaml exists
Reads name: from pubspec.yaml
Creates the full folder scaffold
Generates localization files (slang.yaml, assets/locales/en.locale.json)
Generates asset pipeline files (build.yaml, assets/colors/colors.xml)
Scaffolds packages/clean_router local workspace package (CleanRouterBase + CleanRouterRefresh)
Patches root pubspec.yaml with workspace: - packages/clean_router
Generates core Dart files (main, bootstrap, DI, routing, string extension)
Generates utils (Failure, AppLogger, Debouncer, getCurrentFunctionName, safeCast, safeExecute, listToModelList, type definitions)
Generates home feature scaffold
Generates tools/ scripts (only with --tools)
Installs all runtime and dev dependencies
Updates .gitignore
Generates VSCode config (.vscode/extensions.json, launch.json, tasks.json)
Patches pubspec.yaml flutter assets
Sets up network layer (only with --network or --auth-interceptor)
Scaffolds auth interceptor (only with --auth-interceptor)
Runs dart run slang
Runs dart run build_runner build
Runs dart format .

Dependencies installed:

Type	Packages
Runtime	`flutter_bloc`, `go_router`, `get_it`, `injectable`, `freezed_annotation`, `fpdart`, `slang`, `slang_flutter`, `json_annotation`, `package_info_plus`, `flutter_svg`, `flutter_localizations` (SDK), `pretty_dio_logger` (git), `chucker_flutter` (git)
Dev	`build_runner`, `injectable_generator`, `freezed`, `flutter_gen_runner`, `json_serializable`

`bootstrap` — Re-bootstrap after git pull #

clean-helper bootstrap

Runs flutter pub get → dart run slang → dart run build_runner build in sequence. Use this after pulling changes that added new dependencies or modified generated files.

`add_feature` — Add a new feature #

clean-helper add_feature auth
clean-helper add_feature user_profile
clean-helper add_feature auth --di    # also generate a DI module

Feature name must be snake_case. Generates:

lib/
├── app/navigation/
│   └── auth_navigation_impl.dart      (@LazySingleton, implements AuthNavigation)
└── features/auth/
    ├── data/
    │   ├── constants/
    │   ├── datasources/
    │   ├── models/
    │   │   ├── requests/
    │   │   └── response/
    │   └── repositories/
    ├── di/                            (only with --di flag)
    │   └── auth_module.dart           (@module abstract class AuthModule)
    ├── domain/
    │   ├── entities/
    │   ├── repositories/
    │   └── use_cases/
    ├── presentation/
    │   ├── bloc/auth/
    │   │   ├── auth_bloc.dart         (@lazySingleton, extends Bloc)
    │   │   ├── auth_event.dart        (part of, @freezed)
    │   │   └── auth_state.dart        (part of, @freezed)
    │   ├── pages/
    │   │   └── auth_page.dart         (pure UI widget)
    │   ├── screens/
    │   │   └── auth_screen.dart       (BlocProvider wiring)
    │   └── widgets/
    └── router/
        ├── auth_routes.dart           (sealed class AuthRoutes)
        ├── auth_navigation.dart       (abstract class AuthNavigation)
        └── auth_router.dart           (@lazySingleton, implements CleanRouterBase)

The new feature router is automatically registered in lib/app/router/app_router_module.dart. dart format and build_runner run automatically at the end.

`add_repo` — Add a full data layer #

clean-helper add_repo home invoice
clean-helper add_repo auth user
clean-helper add_repo home invoice --no_rest   # skip REST datasource and API paths

Generates the complete data layer for a repository inside lib/features/<feature>/:

domain/
  entities/invoice_entity.dart                  (abstract class InvoiceEntity)
  repositories/invoice_repository.dart          (abstract interface, get + post methods)
data/
  constants/home_api_paths.dart                 (sealed class HomeApiPaths)
  datasources/invoice_data_source_base.dart     (abstract interface)
  datasources/rest_invoice_data_source.dart     (@RestApi, @Injectable, Retrofit impl)
  models/requests/invoice_request_model.dart    (@JsonSerializable)
  models/response/invoice_response_model.dart   (@freezed, implements InvoiceEntity)
  repositories/invoice_repository_impl.dart     (@Singleton, implements InvoiceRepository)

--no_rest skips rest_invoice_data_source.dart and home_api_paths.dart, even if a network module is present. REST files are also skipped automatically if lib/core/network/di/network_module.dart does not exist.

All internal imports use relative paths. dart format and build_runner run automatically at the end.

`add_entity` — Add an entity + model #

# Feature scope
clean-helper add_entity home invoice

# With subfolder (places model in data/models/requests/)
clean-helper add_entity home invoice requests

# Core scope
clean-helper add_entity core error

Generates a domain entity and a freezed model:

// Domain
abstract class InvoiceEntity {}

// Data (freezed + json_serializable)
@freezed
sealed class InvoiceModel with _$InvoiceModel implements InvoiceEntity {
  const factory InvoiceModel() = _InvoiceModel;
  factory InvoiceModel.fromJson(Map<String, dynamic> json) =>
      _$InvoiceModelFromJson(json);
}

dart format and build_runner run automatically at the end.

`add_auth_interceptor` — Scaffold the auth interceptor #

clean-helper add_auth_interceptor

Run this after add_network_module. Idempotent — skips anything already present. Does three things:

Creates lib/core/network/interceptors/auth_interceptor.dart — a @lazySingleton Dio interceptor with:
- onRequest: attach Bearer token from storage (TODO to implement)
- onError: on 401, refresh the token and retry the original request
- Refresh deduplication — concurrent 401s share a single refresh call
Patches lib/core/di/di_keys.dart — adds DIKeys.noAuthDio constant
Patches lib/core/network/di/network_module.dart:
- Wires AuthInterceptor as the first interceptor in the main Dio provider
- Adds a noAuthDio provider (Dio without AuthInterceptor) used by AuthInterceptor internally to prevent infinite refresh loops

build_runner runs automatically at the end. Fill in the TODOs in auth_interceptor.dart afterwards.

`add_network_module` — Set up the network layer #

clean-helper add_network_module

Generates Dio + Retrofit network files, installs network dependencies (including chucker_flutter), patches AppGoRouter, and runs build_runner automatically.

`build_runner` — Run build_runner #

clean-helper build_runner         # build (default)
clean-helper build_runner build   # build
clean-helper build_runner clean   # clean generated files

`remove_feature` — Remove a feature #

clean-helper remove_feature auth

Deletes the feature directory and deregisters its router from lib/app/router/app_router_module.dart.

`regenerate_router` — Rebuild app_router_module.dart from scratch #

clean-helper regenerate_router

Scans lib/features/ for any feature that has a router/<feature>_router.dart file and regenerates lib/app/router/app_router_module.dart from scratch. Features are sorted alphabetically for deterministic output. app_router_module.dart is fully managed by the tool — do not edit it manually. Useful when the module has drifted out of sync or after manual edits to the features directory.

`add_vscode_config` — Generate VSCode configuration #

clean-helper add_vscode_config

Generates three files under .vscode/:

File	Purpose
`extensions.json`	Recommended extensions for the project
`launch.json`	Debug launch configurations
`tasks.json`	Common project tasks

All files are written with writeFile — skipped if they already exist. Also runs automatically as part of init.

`generate_tools` — Generate tools/ scripts #

clean-helper generate_tools             # skip existing files
clean-helper generate_tools --overwrite # -o  overwrite existing files

Generates helper shell scripts under tools/ in the current project. Use --overwrite to force-update scripts that already exist. Also available as part of init via the --tools flag.

`generate_localizations` — Generate locales #

clean-helper generate_localizations

Runs dart run slang to regenerate lib/generated/locales/locales.g.dart from assets/locales/en.locale.json.

`list_mono_repo_apps` — List declared mono-repo apps #

clean-helper list_mono_repo_apps

Reads clean-helper.mono_repo_apps from pubspec.yaml and prints every declared app. Useful for verifying monorepo configuration or debugging project detection.

Detected mono-repo apps (2):
  1. app1  (apps/app1)
  2. app2  (apps/app2)

If no apps are declared, prints setup instructions instead.

Generated Architecture #

Clean Architecture Structure #

Feature
├── domain/           Pure Dart — no Flutter, no packages
│   ├── entities/     Abstract classes (no JSON, no annotations)
│   ├── repositories/ Abstract interfaces
│   └── use_cases/    Business logic
│
└── data/             Implements domain contracts
    ├── models/       @freezed classes implementing entities
    ├── datasources/  API calls via Retrofit
    └── repositories/ @LazySingleton implementations

Core Utils #

File	Location
`AppLogger`	`lib/core/utils/app_logger.dart`
`Debouncer<T>`	`lib/core/utils/debouncer.dart`
`JsonDecodeFactory` typedef	`lib/core/utils/type_definitions.dart`
`safeCast`	`lib/core/utils/functions/safe_cast.dart`
`safeExecute`	`lib/core/utils/functions/safe_execute.dart`
`listToModelList`	`lib/core/utils/functions/list_to_model_list.dart`
`getCurrentFunctionName`	`lib/core/utils/functions/get_current_function_name.dart`

Dependency Injection — `get_it` + `injectable` #

Annotation	Meaning
`@lazySingleton`	Created on first access, shared instance
`@LazySingleton(as: X)`	Registered as abstract type X
`@Singleton(as: X)`	Eager singleton registered as X
`@module`	Provides third-party or platform instances
`@preResolve`	Awaited before app starts

GetIt instance lives in lib/app/di/di_container.dart. @InjectableInit bootstraps everything via diInitializer(diContainer) in bootstrap.dart.

Routing — `go_router` + `CleanRouterBase` #

Router base classes live in the local packages/clean_router workspace package. Each feature provides a CleanRouterBase implementation:

abstract interface class CleanRouterBase {
  List<RouteBase> get routes;
  List<Stream<dynamic>> get refreshStreams;
  FutureOr<String?> redirect(BuildContext context, GoRouterState state);
  int get priority; // lower = higher priority
}

AppRouterModule collects all CleanRouterBase implementations, sorts by priority, and builds AppGoRouter. app_router_module.dart is tool-owned and regenerated automatically by add_feature, remove_feature, and regenerate_router.

State Management — `flutter_bloc` + `freezed` #

Every feature BLoC:

Extends Bloc<FeatureEvent, FeatureState>
Is annotated @lazySingleton for DI
Events and states are @freezed union types

Error Handling — `fpdart` + `Failure` #

Failure implements Exception with an optional message
Failure.leftFromError(e) wraps any caught object as Left<Failure>
safeCast<T>(data, decoder) — safely casts dynamic API responses to Either<Failure, T>
safeExecute<T>(exec) — wraps any async call in Either<Failure, T>

Network — `dio` + `retrofit` #

Dio instance provided by NetworkModule (@module)
RetrofitLogger (@LazySingleton(as: ParseErrorLogger)) logs Retrofit parse errors via AppLogger
ErrorInterceptor parses {"errors": [...]} API responses into ErrorModel
ChuckerDioInterceptor + PrettyDioLogger added in all builds

Localization — `slang` #

Config: slang.yaml at project root
Source: assets/locales/en.locale.json
Output: lib/generated/locales/locales.g.dart
String.tr extension provides shorthand access to translations

Asset Generation — `flutter_gen` #

Config: build.yaml at project root
Output: lib/generated/flutter_gen/
Colors sourced from assets/colors/colors.xml

Monorepo Support #

clean-helper works with monorepo Flutter workspaces. Run commands from the monorepo root — the tool detects the setup automatically.

Setup #

Add a clean-helper section to the root pubspec.yaml:

clean-helper:
  mono_repo_apps:
    - apps/app1
    - apps/app2

How it works #

Tool is run from the monorepo root (which has a pubspec.yaml but no lib/ folder).

The configured apps are listed and you are prompted to choose one:

📦 Multiple mono-repo projects detected. Please select a project:
  1. app1  (apps/app1)
  2. app2  (apps/app2)
Enter number (1–2):

After selection the command runs as if it were invoked from inside that app's directory — all generated files land in the correct location.

`--scope` flag #

Skip the interactive prompt by passing --scope=<app_name> before the subcommand:

clean-helper --scope=app1 init
clean-helper --scope=app1 add_feature login
clean-helper --scope=app2 add_repo home invoice

The flag matches on the folder name (last segment of the declared path). If two apps share the same name but have different paths, a narrowed prompt is shown for only those matches:

⚠️  Multiple apps named "app1" found. Please select one:
  1. app1  (apps/app1)
  2. app1  (packages/app1)
Enter number (1–2):

If no app matches, the command aborts and lists all available app names.

No config, no `lib/`? #

If the tool is run from a directory with no lib/ and no clean-helper.mono_repo_apps declaration, it exits with instructions to add the configuration.

Requirements #

Dart SDK ^3.11.3
Must be run from the root of a Flutter project (directory containing pubspec.yaml), or from a monorepo root with clean-helper.mono_repo_apps declared

clean_helper 1.1.2 clean_helper: ^1.1.2 copied to clipboard

Metadata

clean_helper #

Installation #

Enable Shell Auto-completion #

Commands #

Usage #

init — Bootstrap a Flutter project #

bootstrap — Re-bootstrap after git pull #

add_feature — Add a new feature #

add_repo — Add a full data layer #

add_entity — Add an entity + model #

add_auth_interceptor — Scaffold the auth interceptor #

add_network_module — Set up the network layer #

build_runner — Run build_runner #

remove_feature — Remove a feature #

regenerate_router — Rebuild app_router_module.dart from scratch #

add_vscode_config — Generate VSCode configuration #

generate_tools — Generate tools/ scripts #

generate_localizations — Generate locales #

list_mono_repo_apps — List declared mono-repo apps #

Generated Architecture #

Clean Architecture Structure #

Core Utils #

Dependency Injection — get_it + injectable #

Routing — go_router + CleanRouterBase #

State Management — flutter_bloc + freezed #

Error Handling — fpdart + Failure #

Network — dio + retrofit #

Localization — slang #

Asset Generation — flutter_gen #