How to use the webpack-atoms.rules.sass function in webpack-atoms

stats: stats.minimal,
  },

  resolve: {
    alias: {
      'react-big-calendar$': path.resolve(__dirname + '/../src/index.js'),
      'react-big-calendar/lib': path.resolve(__dirname, '../src'),
    },
  },
  module: {
    rules: [
      rules.js({}),
      rules.images(),
      rules.fonts(),
      { oneOf: [rules.css.modules(), rules.css()] },
      rules.sass({ browsers }),
      {
        test: /\.md/,
        use: [loaders.js(), 'markdown-jsx-loader'],
      },
    ],
  },
  plugins: [
    plugins.html({ title: 'React Big Calendar' }),
    plugins.extractCss(),
  ],
}

module.exports = function({ config }) {
  config.module.rules = [
    rules.js(),
    rules.fonts(),
    rules.images(),
    rules.css(),
    rules.sass({ browsers }),
  ]

  return config
}