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React Component Performance

Checked
dimillian·vlatest·frontend·MIT

Helps with React, components, 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 dimillian/skills --skill react-component-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

dimillian

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 dimillian/skills at 05ba982bfe.

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

Commit
05ba982bfe
Manifest
react-component-performance/SKILL.md
Scanned
3 files, 212 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

The react-component-performance skill enables AI agents to analyze React component code for performance bottlenecks and suggest specific optimizations. It helps identify inefficient rendering patterns, unnecessary re-renders, and memory leaks within the application structure.

When to use it

  • Reviewing complex dashboard widgets that experience lag during data updates.
  • Optimizing large e-commerce product lists before deployment to improve load times.
  • Debugging slow interactions in single-page applications where state changes trigger excessive renders.
  • Auditing legacy codebases to refactor components for better scalability and efficiency.

Key capabilities

  • Detects inefficient useEffect dependencies and unnecessary re-renders.
  • Identifies missing memoization with React.memo, useMemo, or useCallback.
  • Analyzes component hierarchy to find potential render-blocking elements.
  • Suggests code refactors to reduce bundle size and improve runtime speed.

Example prompts

  • "Analyze this React list component and identify why it re-renders every time the parent state changes."
  • "Optimize the following useEffect hook to prevent unnecessary API calls on every render."
  • "Review this dashboard widget for performance issues and suggest specific memoization strategies."

Tips & gotchas

Ensure the code provided includes necessary imports (like React) so the analysis context is complete. Focus on components with frequent state updates, as these yield the highest improvement potential from optimization suggestions.