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Swift Optimise

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pproenca·vlatest·frontend·MIT

Rapidly optimizes frontend code for performance gains through automated refactoring and resource reduction.

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Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add pproenca/dot-skills --skill swift-optimise -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

pproenca

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Live repository

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About this skill

What it does

This skill provides a comprehensive guide to optimizing Swift and SwiftUI applications for performance. It offers 19 rules categorized by priority (critical, high, and medium) covering modern concurrency, render/scroll performance, and animation performance. The guidance is tailored for iOS 26 and Swift 6.2, emphasizing features like @Observable and strict concurrency. This skill assumes a clinic modular MVVM-C architecture.

When to use it

  • When migrating to Swift 6's strict concurrency (Sendable, actor isolation).
  • When replacing Combine publishers with async/await.
  • When implementing @MainActor isolation and actor-based concurrency.
  • Before optimizing scroll or render performance.
  • When building performant spring animations and transitions.

Key capabilities

  • Guidance on adopting Swift 6 strict concurrency practices (Sendable).
  • Recommendations for migrating from Combine to async/await.
  • Strategies for decomposing views to reduce state invalidation.
  • Best practices for optimizing scroll and render performance using lazy containers, Canvas, and TimelineView.
  • Techniques for creating high-performance animations and transitions.
  • Suggestions on utilizing SwiftUI Instruments for profiling.

Example prompts

  • "How can I replace a Combine publisher with async/await?"
  • "What's the best way to decompose views in Swift 6?"
  • "Show me how to use Canvas and TimelineView for high-performance rendering."

Tips & gotchas

  • This skill assumes familiarity with the clinic modular MVVM-C architecture.
  • The guidance is specifically targeted for iOS 26 and Swift 6.2; some recommendations may not be applicable to older versions.
  • Always profile your application using SwiftUI Instruments before implementing any optimization techniques.