Does it require k6 to be installed locally?

No, it includes support for Docker-based k6 execution, allowing you to run load tests without a local installation.

What metrics does the bundle analysis provide?

It identifies total bundle size, the largest JS files/chunks, and integrates with source-map-explorer for deep inspection of dependencies.

Does it support Core Web Vitals?

Yes, the Lighthouse integration specifically parses and reports on FCP, LCP, TBT, and CLS metrics with pass/fail status.

Can I run Lighthouse tests against a production URL?

Yes, the skill can discover environment URLs from your constants or .env files to run audits against deployed environments.

How are backend tests configured?

The skill reads package.json scripts from your backend directory, supporting standard k6 test configurations for smoke, load, and stress scenarios.

Expo Performance & Load Testing

Name: Expo Performance & Load Testing
Author: CodySwannGT

byCodySwannGT

•

Analíticas y Monitorización

Analyzes Expo and serverless backend performance through Lighthouse audits, bundle size verification, and k6 load testing.

This skill provides a comprehensive performance suite for Expo-based applications and their serverless backends, enabling developers to automate Lighthouse audits, investigate JavaScript bundle sizes, and execute complex k6 load tests directly within Claude Code. It streamlines the process of identifying performance bottlenecks across the entire stack—from frontend Core Web Vitals to backend stress testing—ensuring applications remain responsive and scalable under various traffic conditions through automated enforcement and detailed reporting.

Características Principales

01Detailed JavaScript bundle size analysis and chunk visualization

02Core Web Vitals tracking and threshold validation

03Automated Lighthouse audits for local and deployed environments

04Comprehensive k6 load testing suite including smoke, load, stress, and spike tests

05Serverless backend performance benchmarking and error rate monitoring

061 GitHub stars

Casos de Uso

01Benchmarking application performance before a major production release

02Identifying large dependencies in the Expo web bundle to improve load times

03Simulating traffic spikes on a serverless API to determine scalability limits

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add codyswanngt/lisa ops-performance

For use in Claude.ai and ChatGPT