Life-changing CSS workflow, leveraging the magic of Stylus, Webpack, and CSS Modules. Stylepack gives you:

• CSS with all the features of Stylus
• Proper style isolation using CSS Modules (optional)
• Shared variables between your JavaScript and styles
• Support for webpack's awesome Hot Module Replacement for development mode

npm install --save stylepack stylus

Simple example:

// webpack.config.js

const webpackConfig = {
    // ... your existing webpack configuration ...
};

// Pass the webpack config object through this function to add
// stylus & CSS module goodness to your webpack setup:
const applyStylepack = require('stylepack')({
    webpack: require('webpack'),
    // optional stylepack config goes here
})
module.exports = applyStylepack(webpackConfig)

Now, say you have a foo.styl file in your project as follows:

.bar
    color: red
    font-weight: bold

Then in your client-side JS code, you can import this stylus file, and webpack will compile and bundle it automatically. The default import will be a hash of classnames that you can use in your JavaScript (eg. for React components):

import classes from './foo.styl'

document.body.classList.add(classes.bar)

The stylepack function takes an optional configuration object, with the following supported keys:

• cssModules - Set this to true to enable CSS Modules
• vars - An object containing variables that will be available to the stylus files. This allows you to share variables across your stylesheets and application JavaScript (eg. colours, animation times, media query breakpoints). Note: nested objects and arrays are not yet supported within the vars option
• fileMatchRegex - A RegExp used to match files that Stylepack will process. (default: /\.styl$/)
• extractTo - The name of a CSS file to extract the style rules into. Usually you only want to enable this option in production mode

• Remove webpack dependency. It's only in the package.json because extract-text-webpack-plugin errors out without it. Ideally you should be able to "bring your own" webpack version, without this plugin also requiring it directly.