rollup-plugin-postcss-export

A Rollup plugin that integrates PostCSS processing and bundles processed CSS into a single external file. Version 1.0.3 is the latest stable release. Features include custom PostCSS plugins, source maps, CSS modules support via postcss-modules, and configurable file extensions. Key differentiators: it exports all CSS to one external file rather than inlining or emitting separate chunks, and it supports CSS modules with a getExport callback. The plugin is lightweight and focused, but has low maintenance activity.