dart-resource-management

Manage Dart and Flutter resource disposal with dispose and close patterns.

5|Updated Oct 14, 2025
One-click install
npx skills add https://github.com/reloveution/dart-flutter-rules --skill dart-resource-management
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: dart-resource-management
Source: https://github.com/reloveution/dart-flutter-rules/tree/main/skills/dart-resource-management
Command: npx skills add https://github.com/reloveution/dart-flutter-rules --skill dart-resource-management

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill prevents memory leaks and unexpected behavior in Dart and Flutter applications by ensuring that all managed resources (like timers, streams, and network requests) are properly disposed of when they are no longer needed.

Core Features & Use Cases

  • Resource Disposal: Ensures dispose() or close() methods are used correctly for timers, subscriptions, stream controllers, animations, and native resources.
  • Cancellation: Handles cancellation of network requests and pending futures to avoid operating on disposed widgets.
  • Lifecycle Management: Integrates resource management with the application and widget lifecycles.
  • Use Case: When a Flutter widget that uses a StreamController and a Timer is removed from the screen, this Skill ensures both are properly closed and cancelled, preventing memory leaks.

Quick Start

Use the dart-resource-management skill to ensure all timers and subscriptions are properly cancelled and nullified in the dispose method.

Frequently Asked Questions about dart-resource-management

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I prevent memory leaks in Flutter widgets using timers and stream controllers?

Prevent memory leaks in Flutter by calling dispose() or close() on timers and stream controllers when the widget is removed. This safely manages resource lifecycles and cancels pending operations to maintain application stability.

What is the correct way to dispose of Dart resources like network requests and animations?

Disposing of Dart resources requires adhering to dispose and close patterns for network requests, animations, and file handles. This cancellation prevents your application from operating on disposed widgets and avoids memory leaks.

When do I need to cancel pending futures and network requests in a Flutter application?

Cancel pending futures and network requests when a widget is removed from the screen or during application lifecycle changes. This stops operations from acting on disposed widgets and prevents unexpected behavior.

How do I manage native resources and file handles across Dart application lifecycles?

Manage native resources and file handles by integrating close patterns with the Dart application lifecycle. This ensures that all managed resources are properly disposed of when they are no longer needed, preventing leaks.

What are the limitations of relying on Dart garbage collection for managing stream subscriptions?

Garbage collection cannot reliably manage active stream subscriptions or timers, so you must explicitly call cancel and dispose. Without this, stream controllers remain open and cause memory leaks in your application.

Can I use this resource management approach for both widget and application lifecycles in Flutter?

Yes, you can integrate resource management across both widget and application lifecycles in Flutter. This ensures timers, file handles, and streams are properly closed regardless of the lifecycle state changes.