Expo React Native Performance

A comprehensive reference with 42 rules across 8 categories for optimizing Expo React Native apps, from startup time to list rendering to animation performance. The priorities are well organized: critical stuff like enabling Hermes and switching to FlashList comes first, then re-render optimization and animation best practices, down to platform-specific tweaks. Each rule links to its own reference file with examples. The structure is opinionated in a good way, basically giving you a checklist for code review or refactoring. If you're building production Expo apps and hitting performance issues, this gives you a systematic way to find the actual problems instead of randomly memoizing everything.

skills.sh installs: 1.5K
GitHub stars: 222
last updated: Aug 21, 2026

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Install

$ npx -y skills add pproenca/dot-skills --skill expo-react-native-performance --agent claude-code

Installs into .claude/skills of the current project.

Files

Expo React Native Performance Best Practices

Comprehensive performance optimization guide for Expo React Native applications. Contains 42 rules across 8 categories, prioritized by impact to guide automated refactoring and code generation.

When to Apply

Reference these guidelines when:

Writing new React Native components or screens
Implementing lists with FlatList or FlashList
Adding animations or transitions
Optimizing images and asset loading
Reviewing code for performance issues

Rule Categories by Priority

Priority	Category	Impact	Prefix
1	App Startup & Bundle Size	CRITICAL	`startup-`
2	List Virtualization	CRITICAL	`list-`
3	Re-render Optimization	HIGH	`rerender-`
4	Animation Performance	HIGH	`anim-`
5	Image & Asset Loading	MEDIUM-HIGH	`asset-`
6	Memory Management	MEDIUM	`mem-`
7	Async & Data Fetching	MEDIUM	`async-`
8	Platform Optimizations	LOW-MEDIUM	`platform-`