Swift Skill

Swift concurrency and testing: async/await, Actors, TaskGroups, Sendable, structured concurrency, XCTest, Swift Testing framework, and async test patterns.

Reference Loading Table

Signal	Reference	Size
async/await, Task, Sendable	`references/fundamentals.md`	~20 lines
Actor, @MainActor, nonisolated	`references/actor-isolation.md`	~20 lines
TaskGroup, AsyncSequence, AsyncStream, cancellation	`references/task-patterns.md`	~20 lines
Failure modes, common mistakes	`references/preferred-patterns.md`	~20 lines
concurrency overview, structured concurrency patterns	`references/swift-concurrency.md`	~30 lines
XCTest, Swift Testing, test doubles, async tests, UI tests	`references/swift-testing.md`	~250 lines

Loading rule. Read the references whose signals match the task before responding.

swift

Swift Skill

Reference Loading Table