If you're upgrading a project to jQuery 4.0, this handles the migration path. It includes the jQuery Migrate plugin for compatibility testing and helps you identify breaking changes before they bite you in production. The skill is marked production ready and covers the latest versions (jQuery 4.0.0 and jquery-migrate 4.0.2). It's pretty straightforward: add the migrate plugin, check the console warnings, fix the issues, then remove the plugin once you're clean. Not much more to it than that, but it saves you from hunting down the migration docs yourself. Good for anyone maintaining legacy jQuery codebases who needs to bump to v4.
npx skills add https://github.com/jezweb/claude-skills --skill jquery-4