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swift-concurrency-pro

Review Swift concurrency code for correctness and async/await pitfalls.

Updated May 6, 2026
Search Tags:#code review#concurrency#swift#async await#actors#cancellation#async stream
One-click install
npx skills add https://github.com/Roy-wonji/claude-config --skill swift-concurrency-pro-roy-wonji
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: swift-concurrency-pro
Source: https://github.com/Roy-wonji/claude-config/tree/main/skills/swift-concurrency-pro
Command: npx skills add https://github.com/Roy-wonji/claude-config --skill swift-concurrency-pro-roy-wonji

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

It helps you review Swift concurrency code to prevent data races, actor isolation mistakes, incorrect async/await usage, and subtle cancellation or streaming bugs that only show up under load.

Core Features & Use Cases

  • Concurrency-correctness review: Identify genuine problems in async/await code, actor usage, and isolation boundaries without nitpicking.
  • Structured vs unstructured validation: Ensure structured concurrency patterns are preferred and flag incorrect unstructured task usage.
  • Cancellation and stream safety checks: Verify cancellation handling and correctness of AsyncStream/continuation lifecycles, plus sync↔async bridging.

Quick Start

Ask the assistant to review your Swift concurrency codebase for correctness and common async/await pitfalls using strict concurrency rules for Swift 6.2 and later.

Frequently Asked Questions about swift-concurrency-pro

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

FAQPage Schema
How do I review Swift async/await code for concurrency correctness?▼

To review Swift async/await code for concurrency correctness, identify data races, actor isolation mistakes, and subtle cancellation bugs by validating structured concurrency patterns and enforcing safe sendability rules without unsafe workarounds.

What are common Swift async/await pitfalls when handling cancellation and AsyncStream?▼

Common Swift async/await pitfalls include incorrect cancellation handling and AsyncStream or continuation lifecycle errors that cause streaming bugs under load. Validating sync-to-async bridging ensures these continuation lifecycles remain safe.

How do I validate structured vs unstructured task usage in Swift concurrency?▼

Validating structured vs unstructured task usage in Swift concurrency requires preferring structured concurrency patterns and flagging incorrect unstructured task usage to prevent data races and isolation boundary violations in async/await implementations.

Does this Swift concurrency review approach support Swift 6.2 strict concurrency rules?▼

Yes, this Swift concurrency review approach supports Swift 6.2 strict concurrency rules by validating changes with reference rules, prioritizing genuine hotspot issues, and enforcing safe patterns without recommending unsafe sendability workarounds.

Why does my Swift actor isolation code still have data races during an async code review?▼

Swift actor isolation code can still have data races due to subtle async/await usage mistakes or incorrect unstructured task execution. Reviewing isolation boundaries and validating structured concurrency patterns catches these hidden bugs.

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