flutter

name	flutter
description	Flutter/Dart development patterns, state management, and widget design.
globs	["**/*.dart","**/pubspec.yaml","**/android/**","**/ios/**"]
priority	85
tags	["framework"]

Flutter Best Practices

Widgets

• Keep build methods small
• Use const constructors where possible
• Extract widgets into separate classes
• Use keys properly for stateful widgets
• Prefer composition over deep widget nesting

State Management

• Use Riverpod for app-level state
• Use ValueNotifier for simple local state
• Use BLoC for complex business logic
• Avoid setState for global state
• Use streams for reactive data

Performance

• Use const widgets to avoid rebuilds
• Use ListView.builder for long lists
• Profile with Flutter DevTools
• Use RepaintBoundary for expensive widgets
• Cache network images

Architecture

• Use clean architecture layers
• Separate UI, domain, and data layers
• Use repository pattern for data access
• Use dependency injection