refactoring

Refactor iOS/Swift code by extracting methods and introducing protocols.

8|Updated Feb 12, 2026

Search Tags:#swift #refactor #async-await #design-patterns #dependency-injection #code-smell #code-maintenance

Ready to run

npx skills add https://github.com/ChoshimWy/iOSAgentSkills --skill refactoring-choshimwy

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: refactoring
Source: https://github.com/ChoshimWy/iOSAgentSkills/tree/main/skills/refactoring
Command: npx skills add https://github.com/ChoshimWy/iOSAgentSkills --skill refactoring-choshimwy

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill addresses common code smells that reduce maintainability, such as long functions, duplicated logic, deep nesting, heavy use of callbacks, and God Objects. It guides safe, incremental refactoring without changing functionality.

Core Features & Use Cases

Extract Method: break large methods into smaller, reusable units.
Guard Clause & Async/Await: replace nested conditionals and callback hell with guard clauses and async/await.
Protocol Extraction & DI: extract protocols and introduce dependency injection to decouple components.
Use Case: Refactor a legacy module to reduce coupling while preserving existing behavior.

Quick Start

Identify a target file and apply incremental refactoring steps to remove code smells while preserving behavior.

Frequently Asked Questions about refactoring

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

FAQPage Schema

How do I refactor Swift code with long methods and deep nesting?▼

Refactor Swift code with long methods by extracting smaller reusable units and replacing nested conditionals with guard clauses. This incremental process breaks down large functions to eliminate code smells while preserving original behavior.

What is the best way to replace callback hell with async/await in iOS?▼

The best way to replace callback hell is applying async/await refactoring to flatten asynchronous logic. Converting completion handlers to async patterns reduces deep nesting and improves maintainability without altering functionality.

How do I reduce coupling in a legacy Swift module without changing functionality?▼

Reduce coupling in a legacy Swift module by extracting protocols and introducing dependency injection. This decouples components safely through incremental refactoring while enforcing that existing behavior remains completely preserved.

Can I use dependency injection to break down God Objects in Swift projects?▼

Yes, you can use dependency injection to break down God Objects by extracting protocols and decoupling components. This safely addresses heavy code smells by distributing responsibilities without changing the project's behavior.

What precautions are needed when refactoring touches project files in iOS?▼

When refactoring touches project files, you must run tests and validate builds to preserve behavior. These enforced requirements ensure that incremental modifications to eliminate code smells do not introduce regressions.

Does this refactoring approach support removing duplicated logic in Swift?▼

Yes, this refactoring approach supports removing duplicated logic by applying the Extract Method technique. It guides safe incremental modifications to consolidate repeated code blocks into reusable units while maintaining existing functionality.