Audit and improve SwiftUI runtime performance from code review and architecture. Use for requests to diagnose slow rendering, janky scrolling, high CPU/memory usage, excessive view updates, or layout thrash in SwiftUI apps, and to provide guidance for user-run Instruments profiling when code review alone is insufficient.
npxskills add dimillian/skills--skill swiftui-performance-auditLoading…
Use this skill to diagnose SwiftUI performance issues from code first, then request profiling evidence when code review alone cannot explain the symptoms.
references/code-smells.md.references/profiling-intake.md.references/report-template.md.Collect:
@State, @Binding, environment dependencies, and observable models.Ask the user to classify the issue if possible:
For the full profiling intake checklist, read references/profiling-intake.md.
Focus on:
ForEach.body or view builders.GeometryReader, or preference chains.Use references/code-smells.md for the detailed smell catalog and fix guidance.
Provide:
If code review does not explain the issue, ask for runtime evidence:
Use references/profiling-intake.md for the exact checklist and collection steps.
Apply targeted fixes:
ForEach and lists.body into derived state updated from inputs, model-layer precomputation, memoized helpers, or background preprocessing. Use @State only for view-owned state, not as an ad hoc cache for arbitrary computation.equatable() only when equality is cheaper than recomputing the subtree and the inputs are truly value-semantic.Use references/code-smells.md for examples, Observation-specific fan-out guidance, and remediation patterns.
Ask the user to re-run the same capture and compare with baseline metrics. Summarize the delta (CPU, frame drops, memory peak) if provided.
Provide:
Use references/report-template.md when formatting the final audit.
references/profiling-intake.mdreferences/code-smells.mdreferences/report-template.mdreferences/ as they are supplied by the user.references/optimizing-swiftui-performance-instruments.mdreferences/understanding-improving-swiftui-performance.mdreferences/understanding-hangs-in-your-app.mdreferences/demystify-swiftui-performance-wwdc23.md
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Create or update AgentSkills. Use when designing, structuring, or packaging skills with scripts, references, and assets.
Create or update AgentSkills. Use when designing, structuring, or packaging skills with scripts, references, and assets.
Set up and use 1Password CLI (op). Use when installing the CLI, enabling desktop app integration, signing in (single or multi-account), or reading/injecting/running secrets via op.
CLI to manage emails via IMAP/SMTP. Use `himalaya` to list, read, write, reply, forward, search, and organize emails from the terminal. Supports multiple accounts and message composition with MML (MIME Meta Language).