example.webpack.config.js

module.exports = {
  module: {
    rules: [
      {
        test: /\.module\.sass$/i,
        use: [
          mode === 'development' ? 
            'style-loader' : 
            MiniCssExtractPlugin.loader,
          {
            loader: 'css-loader',
            options: {
              modules: {
                localIdentName:
                  mode === 'development'
                    ? '[local]___[hash:base64:5]'
                    : '[hash:base64:5]',
                mode: 'local'
              }
            }
          },
          'postcss-loader',
          'sass-loader'
        ]
      },
		]
	}
}