Skill UI

This expert guides the development of high-performance, cross-platform mobile applications using Flutter 3+ and Dart. It covers best practices for state management (Riverpod, Bloc), UI widget creation, navigation (GoRouter), performance optimization, and thorough testing (unit/widget tests).

A comprehensive, library-agnostic checklist covering best practices for Flutter and Dart applications. It guides developers on architectural principles, state management patterns (BLoC, Riverpod, etc.), Dart idioms, performance optimization, and clean code principles, making it invaluable for code reviews.

A comprehensive guide to idiomatic and robust Dart/Flutter patterns. Covers essential topics including null safety, immutable state management (Freezed), advanced state solutions (BLoC, Riverpod, Provider), reactive routing with GoRouter, secure networking using Dio, and implementing Clean Architecture principles. Ideal for setting up new, scalable Flutter projects.

Guides structured reviews for Flutter/Dart pull or merge requests, checking correctness, security, style, tests, and documentation while verifying branch scope and CI health.

This skill covers the advanced language features introduced in Dart 3, including Pattern Matching, Records, sealed classes, and enhanced control flow structures. Learn how to use `if-case` and switch expressions to write safer, more concise, and idiomatic Dart code, and how to manage complex data shapes using records and patterns.

This comprehensive guide outlines best practices for writing idiomatic, high-quality Dart and Flutter code. It covers detailed conventions for naming (e.g., UpperCamelCase, lowerCamelCase), proper use of types (final, sealed classes), structuring files, managing imports, and writing accurate doc comments. Use this skill when developing new Dart features, refactoring existing code for consistency, or reviewing pull requests for style compliance.

This comprehensive guide details how to properly integrate and configure Firebase within Flutter applications. It covers initial setup using `flutterfire configure`, essential initialization in `main.dart`, handling platform-specific requirements, and advanced techniques for managing multiple app flavors (dev, staging, prod).

Guides Flutter/Dart teams on using Mockito for generating mocks, stubbing behavior, verifying interactions, capturing arguments, and managing fake versus real objects so tests stay predictable and maintainable.

Guides Dart/Flutter developers on using the mocktail package to replace dependencies in tests by defining mocks or fakes, registering fallback values for custom types, stubbing async methods, and verifying interactions with named arguments and matchers.

Guides Flutter/Dart developers through Riverpod setup and best practices for defining providers, using refs, handling lifecycles, combining async data, performing side effects, observing changes, and testing so app state stays consistent and leak-free.

This guide provides comprehensive best practices for writing, structuring, and reviewing tests for Flutter and Dart applications. It covers unit tests, widget tests, golden tests, ensuring test validity, best practices for mocking, and file organization, helping developers write robust and meaningful tests that catch real regressions.