Less VS rollup-plugin-postcss

mrkrupski/LESS-Dynamic-Stylesheet - A set of useful mixins for LESS, the CSS pre-processor: http://lesscss.org

Now that we have addressed our scripts, we can focus on our styles. In this setup, we will look at the CSS preprocessor Less which lets us write CSS simpler, use variables and mixins. We can add it to the project with the following command:

The React Library Builder supports both SCSS and CSS out of the box, so you can style your components as you normally would. If you want to use CSS modules, you can refer to the rollup-plugin-postcss documentation for more information.

import { nodeResolve } from "@rollup/plugin-node-resolve"; import postcss from "rollup-plugin-postcss"; import copy from "rollup-plugin-copy"; export default [ { input: "src/js/combine.js", output: { file: "src/js/minified/index.bundle.js", sourcemap: false, } plugins: [ nodeResolve(), postcss({ extract: true, // no way to move output to another folder https://github.com/egoist/rollup-plugin-postcss/issues/250 minimize: true, }), copy({ targets: [ { src: "src/js/minified/index.bundle.css", dest: "src/styles/minified", rename: "fonts.bundle.css", }, ], verbose: true, hook: "writeBundle", }) ], } ];

To process Less files we will use PostCSS, which is a JavaScript build tool for CSS, Less, and other CSS preprocessors. It also comes with a built-in minifier. We can add it to the project with a Rollup plugin: