The bloc package is a Dart library that implements the BLoC (Business Logic Component) design pattern for managing application state in a predictable and testable way. It helps developers separate business logic from UI code, making it easier to test, reuse, and maintain state across Flutter apps, web applications, and other Dart projects. Developers use it to handle complex state transitions, manage concurrent operations, and keep their codebase organized as applications grow.

76 open issues · last updated Jul 21, 2026