uhr/build-config/rollup.config.css-app.js

import cssbundle from 'rollup-plugin-css-bundle';
import postcss from "postcss";
import cssnano from "cssnano";

export default {
    input: 'build-config/entrypoints/css-app.js',
    plugins: [cssbundle({
        transform: code => postcss([cssnano]).process(code),
        output: 'dist/uhr.min.css'
    })]
}