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Vercel React Native Skills TEXT

Provides best practices and coding standards for building performant React Native and Expo applications, focusing on list optimization, animations, and native module integration. It guides developers on using specific libraries like FlashList and Reanimated to ensure high mobile app performance.

10 uses this weeksource vercel-labslicence MIT
Quality gate: PASS · better answers · measured 2026-10-24
Blind-judged against the bare model on 2 requests: average lift +0.5 points (specificity, structure, method, fit).
won 1/2, lift +0.5, tokens ×55.23

Try asking

Say it in your own words; the assistant finds this recipe by itself. Examples:

“Min FlatList er langsom, hvordan kan jeg optimere den med FlashList?”
“Hjælp mig med at animere en knap ved hjælp af Reanimated i min Expo-app.”
“Hvordan håndterer jeg safe areas korrekt i en ScrollView på Android?”
“My FlatList is lagging when I scroll through 5000 items, how do I fix this?”
“Can you refactor this component to use Reanimated for a smoother spring animation?”
“What is the best way to handle safe areas in a ScrollView on iOS?”
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Good for

react-nativeexpomobile-performanceflashlistreanimatedui-patternsnative-moduleslist-optimizationanimations

Not for

Do not use this skill for general web development tasks using React DOM, as the performance optimizations and APIs are specific to mobile environments. It is not suitable for backend API development or database schema design, which require backend-specific skills.

Details

When it is the right choice

Use this skill when developing React Native or Expo components, specifically when optimizing list rendering performance or implementing complex animations. It is also appropriate when configuring native modules, handling platform-specific APIs, or structuring monorepo projects with native dependencies.

The full recipe the assistant reads

React Native Skills

Comprehensive best practices for React Native and Expo applications. Contains rules across multiple categories covering performance, animations, UI patterns, and platform-specific optimizations.

When to Apply

Reference these guidelines when:

  • Building React Native or Expo apps
  • Optimizing list and scroll performance
  • Implementing animations with Reanimated
  • Working with images and media
  • Configuring native modules or fonts
  • Structuring monorepo projects with native dependencies

Rule Categories by Priority

Priority Category Impact Prefix
1 List Performance CRITICAL list-performance-
2 Animation HIGH animation-
3 Navigation HIGH navigation-
4 UI Patterns HIGH ui-
5 State Management MEDIUM react-state-
6 Rendering MEDIUM rendering-
7 Monorepo MEDIUM monorepo-
8 Configuration LOW fonts-, imports-

Quick Reference

1. List Performance (CRITICAL)

  • list-performance-virtualize - Use FlashList for large lists
  • list-performance-item-memo - Memoize list item components
  • list-performance-callbacks - Stabilize callback references
  • list-performance-inline-objects - Avoid inline style objects
  • list-performance-function-references - Extract functions outside render
  • list-performance-images - Optimize images in lists
  • list-performance-item-expensive - Move expensive work outside items
  • list-performance-item-types - Use item types for heterogeneous lists

2. Animation (HIGH)

  • animation-gpu-properties - Animate only transform and opacity
  • animation-derived-value - Use useDerivedValue for computed animations
  • animation-gesture-detector-press - Use Gesture.Tap instead of Pressable

3. Navigation (HIGH)

  • navigation-native-navigators - Use native stack and native tabs over JS navigators

4. UI Patterns (HIGH)

  • ui-expo-image - Use expo-image for all images
  • ui-image-gallery - Use Galeria for image lightboxes
  • ui-pressable - Use Pressable over TouchableOpacity
  • ui-safe-area-scroll - Handle safe areas in ScrollViews
  • ui-scrollview-content-inset - Use contentInset for headers
  • ui-menus - Use native context menus
  • ui-native-modals - Use native modals when possible
  • ui-measure-views - Use onLayout, not measure()
  • ui-styling - Use StyleSheet.create or Nativewind

5. State Management (MEDIUM)

  • react-state-minimize - Minimize state subscriptions
  • react-state-dispatcher - Use dispatcher pattern for callbacks
  • react-state-fallback - Show fallback on first render
  • react-compiler-destructure-functions - Destructure for React Compiler
  • react-compiler-reanimated-shared-values - Handle shared values with compiler

6. Rendering (MEDIUM)

  • rendering-text-in-text-component - Wrap text in Text components
  • rendering-no-falsy-and - Avoid falsy && for conditional rendering

7. Monorepo (MEDIUM)

  • monorepo-native-deps-in-app - Keep native dependencies in app package
  • monorepo-single-dependency-versions - Use single versions across packages

8. Configuration (LOW)

  • fonts-config-plugin - Use config plugins for custom fonts
  • imports-design-system-folder - Organize design system imports
  • js-hoist-intl - Hoist Intl object creation

How to Use

Read individual rule files for detailed explanations and code examples:

rules/list-performance-virtualize.md
rules/animation-gpu-properties.md

Each rule file contains:

  • Brief explanation of why it matters
  • Incorrect code example with explanation
  • Correct code example with explanation
  • Additional context and references

Full Compiled Document

For the complete guide with all rules expanded: AGENTS.md

Files in this skill (42)
  • AGENTS.md
  • README.md
  • SKILL.md
  • metadata.json
  • rules/_sections.md
  • rules/_template.md
  • rules/animation-derived-value.md
  • rules/animation-gesture-detector-press.md
  • rules/animation-gpu-properties.md
  • rules/design-system-compound-components.md
  • rules/fonts-config-plugin.md
  • rules/imports-design-system-folder.md
  • rules/js-hoist-intl.md
  • rules/list-performance-callbacks.md
  • rules/list-performance-function-references.md
  • rules/list-performance-images.md
  • rules/list-performance-inline-objects.md
  • rules/list-performance-item-expensive.md
  • rules/list-performance-item-memo.md
  • rules/list-performance-item-types.md
  • rules/list-performance-virtualize.md
  • rules/monorepo-native-deps-in-app.md
  • rules/monorepo-single-dependency-versions.md
  • rules/navigation-native-navigators.md
  • rules/react-compiler-destructure-functions.md
  • rules/react-compiler-reanimated-shared-values.md
  • rules/react-state-dispatcher.md
  • rules/react-state-fallback.md
  • rules/react-state-minimize.md
  • rules/rendering-no-falsy-and.md
  • rules/rendering-text-in-text-component.md
  • rules/scroll-position-no-state.md
  • rules/state-ground-truth.md
  • rules/ui-expo-image.md
  • rules/ui-image-gallery.md
  • rules/ui-measure-views.md
  • rules/ui-menus.md
  • rules/ui-native-modals.md
  • rules/ui-pressable.md
  • rules/ui-safe-area-scroll.md
  • rules/ui-scrollview-content-inset.md
  • rules/ui-styling.md
Where it comes from

Vendored from vercel-labs/agent-skills, commit 063bee94c3f4, path skills/react-native-skills, licence MIT. The upstream licence file ships inside the skill.