When should this skill be used?

Use it when auditing slow page loads, heavy assets, or rendering delays related to JavaScript libraries.

What does it check libraries against?

It checks that libraries are secure and up to date.

Does it work on any website?

It audits pages where load problems may come from JavaScript libraries; you supply the page data to analyze.

Use secure and up-to-date JS libraries

SkillMedia

js-libraries is a skill for AI agents that audits slow page loads caused by outdated or heavy JavaScript libraries. It guides the agent to verify the actual bottleneck in DevTools, Lighthouse, or field data before recommending changes, so fixes target real rendering delays and heavy assets rather than guesses.

Use Use secure and up-to-date JS libraries in Claude, ChatGPT or Ahel Desktop

Free. Sign in, add Use secure and up-to-date JS libraries and connect your AI. About a minute.

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Then ask your AI: use the Use secure and up-to-date JS libraries skill

Details

Instructions available. Your AI can read the instructions. Execution depends on the setup they require.

Account requirements not reviewed. Check the skill instructions before use; ahel provides instructions and does not run this skill.

No other account needed.

Have an agent that supports loading skills.

Use secure and up-to-date JS librariesStart free

What your AI can do with it

Audit slow page loads related to JavaScript libraries
Identify heavy assets contributing to load time
Investigate rendering delays tied to JS libraries
Verify the actual bottleneck in DevTools
Confirm issues using Lighthouse or field data before recommending changes
Recommend secure and up-to-date JS libraries

Getting started

Have an agent that supports loading skills.
Add the js-libraries skill to the agent's available skills.
Prepare the page or site data you want audited, such as DevTools traces, Lighthouse reports, or field data.
Ask the agent to audit the page load and apply the skill.

What this skill tells your AI

The instructions your AI receives, as published by thedaviddias/front-end-checklist in skills/js-libraries/SKILL.md and read by ahel’s review.

Outdated or vulnerable libraries pose security risks and often include unnecessary bloat that degrades performance.

Quick Reference

Regularly audit dependencies for known security vulnerabilities
Replace heavy libraries with lightweight alternatives (e.g., date-fns vs moment)
Ensure libraries are properly versioned and served via reliable CDNs or self-hosted

Check

Check the project's JavaScript dependencies for known vulnerabilities and outdated versions.

Fix

Update vulnerable libraries to secure versions and replace bloated dependencies with modern, lightweight alternatives.

Explain

Explain the risks of using outdated JavaScript libraries and the benefits of using lightweight alternatives.

Code Review

Review the routes, assets, and loading behavior that affect Use secure and up-to-date JS libraries. Flag exact files, requests, or rendering steps that add unnecessary network, CPU, or layout cost, and describe the measurement method used to confirm the issue.

For full implementation details, code examples, and framework-specific guidance, see references/rule.md.

Rule page: https://frontendchecklist.io/en/rules/performance/js-libraries

Signals

GitHub stars: 74k
Forks: 7k
Last commit: Oct 2026

Questions

When should this skill be used?: Use it when auditing slow page loads, heavy assets, or rendering delays related to JavaScript libraries.
Does it recommend changes right away?: No. It verifies the actual bottleneck in DevTools, Lighthouse, or field data before recommending changes.
What does it check libraries against?: It checks that libraries are secure and up to date.
Does it work on any website?: It audits pages where load problems may come from JavaScript libraries; you supply the page data to analyze.

Advanced

Item type: skill
Key: js-libraries
Source: github.com/thedaviddias/front-end-checklist

github.com/thedaviddias/front-end-checklist