skill:jquery-4 — Migrate jQuery 3.x to 4.0.0

Version: 1.0.0

Purpose

Safely migrate jQuery 3.x codebases to jQuery 4.0.0, with first-class support for WordPress themes, plugins, and legacy web applications. This skill systematically audits every breaking change introduced in jQuery 4.0, generates a prioritized migration plan with exact code replacements, and produces safe, reviewable patches.

Use this skill when:

• Upgrading a WordPress site or plugin from jQuery 3.x to 4.0
• Migrating a legacy web application that depends on removed jQuery APIs
• Auditing a codebase for jQuery 4.0 compatibility before upgrading
• Resolving jQuery Migrate plugin warnings in preparation for jQuery 4.0

File Structure