How to use global variables in CSS-Modules?

Question

I\'m busy learning React with CSS-Modules and I don\'t quite understand how one would store variables? For example, in Sass you\'re able to do this:

// _variable         


        

Answer 1

The CSS-Modules documentation mentions variables here: https://github.com/css-modules/css-modules/blob/master/docs/values-variables.md

With this you can import variables as so:

@value colors: "../../main/colors.css";
@value primary, secondary, tertiary from colors;

which can be used in your css:

.main {
    background-color: tertiary;
    border-top: 30px solid primary;
}

To make this work postcss-loader and postcss-modules-values need to be added to your webpack config. See below:

        {
            test: /\.css$/,
            use: [{
                    loader: 'style-loader'
                },
                {
                    loader: 'css-loader',
                    options: {
                        modules: true,
                        localIdentName: '[name]_[local]_[hash:base64:5]'
                    }
                },
                {
                    loader: 'postcss-loader',
                    options: {
                        plugins: [postcssModulesValues]
                    }
                }
            ]
        }