unplugin-swc is a plugin that enables SWC (a fast TypeScript/JavaScript compiler) for Vite and Rollup build tools, allowing developers to leverage SWC's compilation capabilities within these bundlers. It automatically infers configuration from tsconfig.json and can be customized with additional options like minification and file inclusion/exclusion patterns. This plugin is ideal for developers using Vite or Rollup who want to replace or complement esbuild with SWC's advanced compilation features.