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Expo React Native Performance

Checked
pproenca·vlatest·frontend·MIT

Helps with Expo, React, performance optimization as part of building frontend UIs and user experiences workflows.

Repository

Install on your platform

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 expo-react-native-performance -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

Taken from the source listing. We haven't verified who controls this account.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No undeclared network calls: passed

    Makes no network calls.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned pproenca/dot-skills at cf93c57cac.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
cf93c57cac
Manifest
skills/.experimental/expo-react-native-performance/SKILL.md
Scanned
48 files, 5,062 lines
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

expo-react-native-performance

What it does

This skill enables AI agents to analyze and optimize the performance of React Native applications built with Expo. It specifically targets reducing bundle sizes, improving startup times, and enhancing runtime efficiency through targeted code analysis and configuration adjustments.

When to use it

  • Diagnosing slow app launch times on mobile devices during development or production builds.
  • Reducing the initial download size (bundle) to improve network performance for users with limited connectivity.
  • Identifying memory leaks or inefficient rendering patterns that cause frame drops during complex UI interactions.
  • Optimizing asset loading strategies, such as lazy loading images and media, before deployment.

Key capabilities

  • Analyzing Metro bundler configurations to minimize unnecessary code inclusion.
  • Suggesting specific Expo SDK settings to reduce build artifacts.
  • Identifying heavy dependencies that can be replaced with lighter alternatives.
  • Generating reports on bundle composition and tree-shaking opportunities.

Example prompts

  • "Analyze my current Expo project structure and suggest changes to reduce the initial bundle size by at least 20%."
  • "Identify potential memory leaks in this React Native component and provide code fixes to improve runtime performance."
  • "Optimize my app's startup sequence by reordering initialization logic and configuring lazy loading for non-critical assets."

Tips & gotchas

Ensure your project is using the latest stable version of Expo SDK, as performance optimizations often rely on specific native modules available only in recent releases. Always test performance changes on real devices rather than relying solely on emulators, as network conditions and hardware variations significantly impact metrics like bundle size and startup time.