Enforce functional error handling in Flutter with Dartz and freezed.
npx skills add https://github.com/ngxtm/skill-rule --skill flutter-error-handling
Please help me install this Agent Skill. Skill: Flutter Error Handling Source: https://github.com/ngxtm/skill-rule/tree/main/rules/flutter/error-handling Command: npx skills add https://github.com/ngxtm/skill-rule --skill flutter-error-handling
This Skill addresses the challenge of managing errors and exceptions in Flutter applications by enforcing a standardized, functional approach, preventing raw exceptions from reaching the UI.
Either pattern for predictable error propagation.@freezed unions for clear, typed error representations.Either<Failure, Data>, allowing BLoCs to gracefully handle network issues, server errors, or authentication failures without crashing.Implement functional error handling by returning Either<Failure, T> from repositories and using .fold() in BLoCs.
High-intent search queries and answers about installing and using this skill.
Functional error handling in Flutter uses the Dartz library to return `Either<Failure, SuccessType>` from repositories, ensuring raw exceptions are mapped to domain-specific failures and never reach the UI.
Predictable state management in Flutter BLoCs is achieved by consuming `Either<Failure, Data>` using the `.fold()` method, which gracefully maps network issues or server errors into distinct UI states without crashing.
Domain-specific failures in Flutter are defined using the `@freezed` unions, which provide clear, typed error representations for various exceptions like authentication failures or network issues across the infrastructure layer.
Yes, this approach integrates directly with Flutter BLoC state management by returning `Either<Failure, T>` from repositories and using `.fold()` to handle success and failure states predictably within BLoC events.
You should use the Either pattern for error handling in Flutter when you need to enforce standardized, functional error propagation across asynchronous operations, preventing unpredictable raw exceptions from crashing the application.
wildbitcaStandardize Flutter repository error handling with Either<Failure, T> and fold.
wildbitcaModel Flutter UI events and states with BLoC and Cubit.
titabashGenerate type-safe immutable Freezed data models for Flutter applications.
theslashdojoCapture exceptions and messages in Node/JavaScript apps with Sentry.