Exploring Webpack: Combining CSS-modules with external CSS imports - A comprehensive guide!

In my React application using css-modules, I encountered an issue when trying to import CSS files from external libraries. Due to the inability to globally wrap them in a :global block, webpack interprets them as styles intended for objects only.

Is there a way to import CSS files as global CSS for imported plugins?

For example, in src/index.js:

import 'draft-js/dist/Draft.css';
//unable to include in :global block
import 'react-responsive-carousel/lib/styles/carousel.min.css'; 
//successfully wrapped in :global {...} block and works correctly
import './styles/app.css'; 

This is the Webpack configuration adopted from Create-React-App:

test: /\.css$/,
loader: [
  require.resolve('style-loader'),
  {
   loader: require.resolve('css-loader'),
   options: {
     importLoaders: 1,
     modules: true,
     minimize: true,
    },
   },
    'postcss-loader'
]

Answer №1

To optimize your webpack configuration, consider creating separate rules for handling styles from the src folder and those from node_modules. Make sure to set the modules option to true only in the configuration for src. Here's an example structure to follow:

{
    test: /\.css$/,
    exclude: /node_modules/,
    loader: [
        require.resolve('style-loader'),
        {
            loader: require.resolve('css-loader'),
            options: {
                importLoaders: 1,
                modules: true,
                minimize: true,
            },
        },
        'postcss-loader'
    ]
},
{
    test: /\.css$/,
    include: /node_modules/,
    loader: [
        require.resolve('style-loader'),
        {
            loader: require.resolve('css-loader'),
            options: {
                importLoaders: 1,
                minimize: true,
            },
        },
        'postcss-loader'
    ]
}

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