Flutter/Dart Skills skills

Comprehensive Flutter testing guidance covering unit tests, widget tests, and integration tests. Use when working with Flutter applications to write unit tests for functions/methods/classes, create widget tests to verify UI components, develop integration tests for end-to-end testing, mock dependencies and plugin interactions, debug common testing errors, test Flutter plugins with native code, and run tests in different build modes (debug, profile, release)

Create or update minimal AGENTS.md files in the repository root and nested module directories using progressive disclosure. Works across heterogeneous projects without assuming any fixed agent folder structure.

Complete guide for using drift database library in Dart applications (CLI, server-side, non-Flutter). Use when building Dart apps that need local SQLite database storage or PostgreSQL connection with type-safe queries, reactive streams, migrations, and efficient CRUD operations. Includes setup with sqlite3 package, PostgreSQL support with drift_postgres, connection pooling, and server-side patterns.

Build adaptive and responsive Flutter UIs that work beautifully across all platforms and screen sizes. Use when creating Flutter apps that need to adapt layouts based on screen size, support multiple platforms including mobile tablet desktop and web, handle different input devices like touch mouse and keyboard, implement responsive navigation patterns, optimize for large screens and foldables, or use Capability and Policy patterns for platform-specific behavior.

Comprehensive guide for Flutter navigation and routing including Navigator API, go_router, deep linking, passing/returning data, and web-specific navigation. Use when implementing screen transitions, configuring routing systems, setting up deep links, handling browser history, or managing navigation state in Flutter applications.

Complete guide for internationalizing Flutter apps using gen-l10n and intl packages. Use when Claude needs to add localization support to Flutter applications, translate UI text, format numbers/dates for different locales, or configure multi-language support for Material/Cupertino apps.

Comprehensive guide for implementing animations in Flutter. Use when adding motion and visual effects to Flutter apps: implicit animations (AnimatedContainer, AnimatedOpacity, TweenAnimationBuilder), explicit animations (AnimationController, Tween, AnimatedWidget/AnimatedBuilder), hero animations (shared element transitions), staggered animations (sequential/overlapping), and physics-based animations. Includes workflow for choosing the right animation type, implementation patterns, and best practices for performance and user experience.

Comprehensive Flutter networking guidance including HTTP CRUD operations, WebSocket connections, authentication, error handling, and performance optimization. Use when Claude needs to implement HTTP requests GET POST PUT DELETE, WebSocket real-time communication, authenticated requests with headers and tokens, background parsing with isolates, REST API integration with proper error handling, or any network-related functionality in Flutter applications.

Comprehensive guide for architecting Flutter applications following MVVM pattern and best practices with feature-first project organization. Use when working with Flutter projects to structure code properly, implement clean architecture layers (UI, Data, Domain), apply recommended design patterns, and organize projects using feature-first approach for scalable, maintainable apps.

Complete guide for using drift database library in Flutter applications. Use when building Flutter apps that need local SQLite database storage with type-safe queries, reactive streams, migrations, and efficient CRUD operations. Includes setup with drift_flutter package, StreamBuilder integration, Provider/Riverpod patterns, and Flutter-specific database management for mobile, web, and desktop platforms.

Integrate Duit framework into Flutter applications including setup, driver configuration, HTTP/WebSocket transports, custom widgets, and themes. Use when integrating backend-driven UI, configuring Duit, or adding Duit to Flutter applications.