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pproenca/dot-skills · updated Apr 8, 2026

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$npx skills add https://github.com/pproenca/dot-skills --skill expo
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summary

Comprehensive performance optimization guide for Expo React Native applications. Contains 54 rules across 9 categories, prioritized by impact to guide automated refactoring and code generation.

skill.md

Community Expo React Native Best Practices

Comprehensive performance optimization guide for Expo React Native applications. Contains 54 rules across 9 categories, prioritized by impact to guide automated refactoring and code generation.

When to Apply

Reference these guidelines when:

  • Writing new Expo React Native components
  • Optimizing app startup and Time to Interactive
  • Implementing lists, images, or animations
  • Reducing bundle size and memory usage
  • Reviewing code for mobile performance issues

Rule Categories by Priority

Priority Category Impact Prefix
1 Launch Time Optimization CRITICAL launch-
2 Bundle Size Optimization CRITICAL bundle-
3 List Virtualization HIGH list-
4 Image Optimization HIGH image-
5 Data Fetching Patterns HIGH data-
6 Navigation Performance MEDIUM-HIGH nav-
7 Re-render Prevention MEDIUM rerender-
8 Animation Performance MEDIUM anim-
9 Memory Management LOW-MEDIUM mem-

Quick Reference

1. Launch Time Optimization (CRITICAL)

  • launch-splash-screen-control - Control splash screen visibility during asset loading
  • launch-preload-critical-assets - Preload fonts and images during splash
  • launch-hermes-engine - Use Hermes engine for faster startup
  • launch-defer-non-critical - Defer non-critical initialization
  • launch-new-architecture - Enable New Architecture for synchronous native communication
  • launch-minimize-root-imports - Minimize imports in root App component

2. Bundle Size Optimization (CRITICAL)

  • bundle-avoid-barrel-files - Avoid barrel file imports
  • bundle-analyze-size - Analyze bundle size before release
  • bundle-remove-unused-dependencies - Remove unused dependencies
  • bundle-split-by-architecture - Generate architecture-specific APKs
  • bundle-enable-proguard - Enable ProGuard for Android release builds
  • bundle-optimize-fonts - Subset custom fonts to used characters
  • bundle-use-lightweight-alternatives - Use lightweight library alternatives

3. List Virtualization (HIGH)

  • list-use-flashlist - Use FlashList instead of FlatList
  • list-provide-estimated-size - Provide accurate estimatedItemSize
  • list-avoid-inline-functions - Avoid inline functions in renderItem
  • list-provide-getitemlayout - Provide getItemLayout for fixed-height items
  • list-avoid-key-prop - Avoid key prop inside FlashList items
  • list-batch-rendering - Configure list batch rendering
  • list-memoize-item-components - Memoize list item components

4. Image Optimization (HIGH)

  • image-use-expo-image - Use expo-image instead of React Native Image
  • image-resize-to-display-size - Resize images to display size
  • image-use-webp-format - Use WebP format for smaller file sizes
  • image-use-placeholders - Use BlurHash or ThumbHash placeholders
  • image-preload-critical - Preload critical above-the-fold images
  • image-lazy-load-offscreen - Lazy load off-screen images

5. Data Fetching Patterns (HIGH)

  • data-parallel-fetching - Fetch independent data in parallel
  • data-request-deduplication - Deduplicate concurrent requests
  • data-abort-requests - Abort requests on component unmount
  • data-pagination - Implement efficient pagination strategies
  • data-cache-strategies - Use appropriate caching strategies
  • data-optimistic-updates - Apply optimistic updates for responsiveness

6. Navigation Performance (MEDIUM-HIGH)

  • nav-use-native-stack - Use native stack navigator
  • nav-unmount-inactive-screens - Unmount inactive tab screens
  • nav-prefetch-screen-data - Prefetch data before navigation
  • nav-optimize-screen-options - Optimize screen options
  • nav-avoid-deep-nesting - Avoid deeply nested navigators

7. Re-render Prevention (MEDIUM)

  • rerender-use-memo-components - Memoize expensive components with React.memo
  • rerender-use-callback - Stabilize callbacks with useCallback
  • rerender-use-memo-values - Memoize expensive computations with useMemo
  • rerender-avoid-context-overuse - Avoid overusing Context for frequent updates
  • rerender-split-component-state - Split components to isolate updating state
  • rerender-use-react-compiler - Enable React Compiler for automatic memoization
  • rerender-avoid-anonymous-components - Avoid anonymous components in JSX

8. Animation Performance (MEDIUM)

  • anim-use-reanimated - Use Reanimated for UI thread animations
  • anim-use-native-driver - Enable useNativeDriver for Animated API
  • anim-avoid-layout-animation - Prefer transform over layout animations
  • anim-gesture-handler-integration - Use Gesture Handler with Reanimated
  • anim-interaction-manager - Defer heavy work during animations

9. Memory Management (LOW-MEDIUM)

  • mem-cleanup-useeffect - Clean up subscriptions and timers
  • mem-abort-fetch-requests - Abort fetch requests on unmount
  • mem-avoid-closure-leaks - Avoid closure-based memory leaks
  • mem-release-heavy-resources - Release heavy resources when not needed
  • mem-profile-with-tools - Profile memory usage with development tools

How to Use

Read individual reference files for detailed explanations and code examples:

Full Compiled Document

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

how to use expo

How to use expo on Cursor

AI-first code editor with Composer

1

Prerequisites

Before installing skills in Cursor, ensure your development environment meets these requirements:

  • ›Cursor installed and configured on your development machine
  • ›Node.js version 16.0+ with npm package manager (verify with node --version)
  • ›Active project directory or workspace where you want to add expo
2

Execute installation command

Execute the skills CLI command in your project's root directory to begin installation:

$npx skills add https://github.com/pproenca/dot-skills --skill expo

The skills CLI fetches expo from GitHub repository pproenca/dot-skills and configures it for Cursor.

3

Select Cursor when prompted

The CLI will show a list of available agents. Use arrow keys to navigate and space to select Cursor:

◆ Which agents do you want to install to?
│
│ ── Universal (.agents/skills) ── always included ────
│ • Amp
│ • Antigravity
│ • Cline
│ • Codex
│ ●Cursor(selected)
│ • Cursor
│ • Windsurf
4

Verify installation

Confirm successful installation by checking the skill directory location:

.cursor/skills/expo

Reload or restart Cursor to activate expo. Access the skill through slash commands (e.g., /expo) or your agent's skill management interface.

⚠

Security & Verification Notice

We perform automated surface-level scans (Gen AI Scanner, Socket, Snyk) during installation. These checks detect common vulnerabilities but do not guarantee complete security. Always review skill source code and verify the publisher's reputation before production use.

Skills execute code in your development environment. Always verify the publisher's identity, review recent commits, and test in isolated environments before production deployment.

Additional Resources

›View source code on GitHub›Skills CLI documentation›Learn more about Cursor›What are agent skills?

List & Monetize Your Skill

Submit your Claude Code skill and start earning

GET_STARTED →

Use Cases▌

User Story & Requirements Generation

Create detailed user stories, acceptance criteria, and feature specs

Example

Generate user stories for 'password reset feature' with acceptance criteria, edge cases, and test scenarios

✓

Reduce spec writing time by 50%, ensure comprehensive coverage

Competitive Analysis

Research competitors, compare features, identify gaps

Example

Analyze 5 competitor products, create feature comparison matrix, suggest differentiation opportunities

✓

Complete competitive research in 2 hours instead of 2 days

Roadmap Prioritization

Evaluate features using frameworks (RICE, ICE, Kano) and create prioritized backlogs

Example

Score 20 feature ideas using RICE framework, generate prioritized roadmap with rationale

✓

Make data-driven prioritization decisions faster

Stakeholder Communication

Draft PRDs, status updates, and stakeholder presentations

Example

Create executive summary of Q3 roadmap, monthly progress report, feature launch announcement

✓

Save 3-5 hours/week on communication overhead

Implementation Guide▌

Prerequisites

  • ›Claude Desktop or compatible AI client
  • ›Access to product documentation and roadmap tools (Jira, Notion, etc.)
  • ›Understanding of product management frameworks (RICE, Jobs-to-be-Done, etc.)
  • ›Stakeholder contact information and communication channels

Time Estimate

30-60 minutes to see productivity improvements

Installation Steps

  1. 1.Install product management skill
  2. 2.Start with user story generation for known feature
  3. 3.Progress to competitive analysis: research 2-3 competitors
  4. 4.Use for roadmap prioritization: apply RICE/ICE scoring
  5. 5.Draft stakeholder communications and refine based on feedback
  6. 6.Build template library for recurring PM tasks
  7. 7.Share effective prompts with product team

Common Pitfalls

  • ⚠Not validating competitive research—verify facts before sharing
  • ⚠Accepting user stories without involving engineering team
  • ⚠Over-relying on frameworks without qualitative judgment
  • ⚠Not customizing outputs to company culture and communication style
  • ⚠Skipping stakeholder validation of generated requirements

Best Practices▌

✓ Do

  • +Validate research and competitive analysis with real data
  • +Collaborate with engineering when generating technical requirements
  • +Customize frameworks and templates to your company context
  • +Use skill for first drafts, refine with stakeholder input
  • +Document successful prompt patterns for PM tasks
  • +Combine AI efficiency with human judgment and intuition

✗ Don't

  • −Don't publish competitive analysis without fact-checking
  • −Don't finalize user stories without engineering review
  • −Don't make prioritization decisions solely on AI scoring
  • −Don't skip customer validation of generated requirements
  • −Don't ignore company-specific context and culture

💡 Pro Tips

  • ★Provide context: company goals, constraints, customer feedback
  • ★Ask for alternatives: 'Show 3 ways to prioritize this roadmap'
  • ★Request stakeholder-specific formatting: 'Executive summary vs. engineering spec'
  • ★Use skill for 70% generation + 30% customization to company needs

When to Use This▌

✓ Use When

Use for user story writing, competitive research, roadmap prioritization, stakeholder communication, and PRD drafting. Best for reducing repetitive documentation and research work.

✗ Avoid When

Avoid for strategic product vision (requires deep customer empathy), pricing decisions (needs market and financial expertise), or when face-to-face customer discovery is more valuable than speed.

Learning Path▌

  1. 1Basic: user stories, feature specs, status updates
  2. 2Intermediate: competitive analysis, prioritization frameworks, PRDs
  3. 3Advanced: product strategy, go-to-market planning, OKR setting
  4. 4Expert: product vision, market positioning, business model innovation

Discussion

Product Hunt–style comments (not star reviews)
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general reviews

Ratings

4.7★★★★★72 reviews
  • ★★★★★Anika Khan· Dec 24, 2024

    expo fits our agent workflows well — practical, well scoped, and easy to wire into existing repos.

  • ★★★★★Sakura Zhang· Dec 20, 2024

    Useful defaults in expo — fewer surprises than typical one-off scripts, and it plays nicely with `npx skills` flows.

  • ★★★★★Mei Haddad· Dec 12, 2024

    Registry listing for expo matched our evaluation — installs cleanly and behaves as described in the markdown.

  • ★★★★★Mateo Gupta· Dec 4, 2024

    expo reduced setup friction for our internal harness; good balance of opinion and flexibility.

  • ★★★★★Evelyn Thomas· Nov 23, 2024

    We added expo from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.

  • ★★★★★Mei Khan· Nov 15, 2024

    Registry listing for expo matched our evaluation — installs cleanly and behaves as described in the markdown.

  • ★★★★★Harper Shah· Nov 11, 2024

    expo is among the better-maintained entries we tried; worth keeping pinned for repeat workflows.

  • ★★★★★Harper Srinivasan· Nov 3, 2024

    expo fits our agent workflows well — practical, well scoped, and easy to wire into existing repos.

  • ★★★★★Kiara Sethi· Oct 22, 2024

    We added expo from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.

  • ★★★★★Kiara Reddy· Oct 14, 2024

    expo fits our agent workflows well — practical, well scoped, and easy to wire into existing repos.

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