optimization-phase

What problem does it solve?

This Skill prevents the deployment of features that are slow, inaccessible, or insecure, which can lead to poor user experience, legal risks, and reputational damage.

Core Features & Use Cases

• Performance Benchmarking: Audits backend API response times and frontend Core Web Vitals (FCP, LCP, CLS) to meet speed targets.
• Accessibility Audit: Conducts automated (Lighthouse, axe-core) and manual checks for WCAG 2.1 AA compliance, ensuring inclusivity.
• Security Review: Verifies authentication, input validation, data protection, and security headers to prevent vulnerabilities.
• Use Case: Before a feature goes live, use this Skill to rigorously audit its performance, accessibility, and security. For example, run Lighthouse to ensure a high score, check for SQL injection vulnerabilities, and verify that all critical business logic has at least 80% test coverage.

Quick Start

Run Lighthouse performance audit

npx lighthouse http://localhost:3000 --only-categories=performance --output=json

Run Lighthouse accessibility audit

npx lighthouse http://localhost:3000 --only-categories=accessibility --output=json

Check for duplicate code

npx jscpd src/