postcss-pipeline-webpack-plugin

Webpack 5 plugin that processes generated CSS assets with PostCSS pipelines, enabling multi-file transformations like critical CSS extraction and minification where loaders fall short. Version 6.0.0 (latest) requires Node >=10 and webpack ^5; for webpack 4 use v5, for webpack 3 use v3. Key differentiator: processes all generated CSS files (including those from plugins like MiniCssExtractPlugin) through PostCSS plugins in a pipeline, with support for custom filters, naming (prefix, suffix, transformName), and source maps. Supports PostCSS 6, 7, 8.0.