Why is a local DisposeBag considered an issue?

A local DisposeBag is deallocated as soon as the function scope ends, which immediately cancels the subscription. This skill flags this as it usually leads to logic errors or unintended behavior.

How does this skill detect memory leaks in RxSwift?

The skill uses Grep and Glob tools to scan the codebase for subscription patterns, then analyzes the syntax to ensure subscriptions are correctly added to a DisposeBag and closures use weak references.

Does it provide the actual code to fix the issues?

Yes, for every issue identified, the skill generates a 'Current' vs 'Fix' code block that you can apply directly to your Swift files.

What common patterns does the detector look for?

It specifically looks for missing .disposed(by:) calls, strong self references in subscribe closures, and DisposeBags that are incorrectly defined as local variables instead of class properties.

RxSwift Memory Leak Detector

Name: RxSwift Memory Leak Detector
Author: daispacy

bydaispacy

Mobile Development

Detects and fixes RxSwift memory leaks, retain cycles, and improper subscription disposal in iOS applications.

About

The RxSwift Memory Leak Detector is a specialized tool for iOS developers designed to audit reactive code for common memory management pitfalls. By scanning your project for unmanaged subscriptions, missing dispose bags, and dangerous strong self-references in closures, it helps prevent memory-related crashes and resource accumulation. This skill provides a structured reporting format that identifies critical issues by severity, offering immediate code fixes to ensure your application's memory profile remains healthy and stable.

Key Features

0 GitHub stars
Automated discovery of RxSwift subscriptions using Grep patterns
Detailed reporting with file locations, impact analysis, and ready-to-use fixes
Validation of DisposeBag scope to prevent premature cancellation
Detection of missing .disposed(by: disposeBag) calls
Identification of retain cycles from strong self references in closures

Use Cases

Automated code review for RxSwift best practices and memory safety
Debugging unexpected memory growth or crashes in iOS apps
Pre-release quality assurance to verify deallocation of ViewControllers

About

Key Features

0 GitHub stars
Automated discovery of RxSwift subscriptions using Grep patterns
Detailed reporting with file locations, impact analysis, and ready-to-use fixes
Validation of DisposeBag scope to prevent premature cancellation
Detection of missing .disposed(by: disposeBag) calls
Identification of retain cycles from strong self references in closures

Use Cases

Automated code review for RxSwift best practices and memory safety
Debugging unexpected memory growth or crashes in iOS apps
Pre-release quality assurance to verify deallocation of ViewControllers