flutter-core:flutter-architecture

To structure a Flutter app with clean architecture and MVVM, define domain entities and repositories, implement data sources, wire dependencies with a DI container, and create presentation layers that consume domain use cases. This separates concerns across Presentation, Domain, and Data layers.

Refactoring a large Flutter codebase for maintainability involves applying proven architecture patterns like MVVM, Clean Architecture, and dependency injection to establish clear layer boundaries, separate concerns, and improve testability across growing teams and multiplying features.

Yes, implementing clean architecture in Flutter requires dependency injection tooling to wire dependencies. Specifically, this approach uses get_it with injectable to manage dependency injection, implement layer boundaries, and create testable use cases across the application.

You should apply domain-driven design concepts to a Flutter project when starting a new application, onboarding new engineers with a common structure, or establishing reusable feature modules across teams to create robust, extensible, and highly scalable codebases.

Separating Presentation, Domain, and Data layers improves Flutter testing by applying clear layer boundaries and dependency injection to isolate concerns. This structure ensures use cases are testable and domain logic remains independent of UI and data sources.