How to use the webpack-atoms.plugins.extractText function in webpack-atoms

module.exports = function(root, config) {
  return merge({}, config, {
    module: {
      rules: [
        { parser: { amd: false } },
        rules.js({ tagName: 'less', extension: '.less' }),
        rules.css(),
        rules.less(),
        rules.images(),
        rules.woff(),
      ],
    },
    plugins: [
      plugins.define(),
      plugins.extractText(),
    ],
    node: {
      Buffer: false,
      fs: 'empty',
      net: 'empty',
      tls: 'empty',
    },
  })
}

'react-widgets/lib': path.resolve('../react-widgets/src'),

        'react-widgets-virtualized$': path.resolve(
          '../virtualized/src/index.js'
        ),
        'react-widgets-virtualized/lib': path.resolve('../virtualized/src'),

        'react-widgets-material-ui$': path.resolve(
          '../material-ui/src/index.js'
        ),
        'react-widgets-material-ui/lib': path.resolve('../material-ui/src'),
      },
    },
    plugins: [
      plugins.define(),
      plugins.extractText({ disable: true }),
      plugins.hotModuleReplacement(),
      ...baseConfig.plugins,
    ],
    node: {
      Buffer: false,
      fs: 'empty',
      net: 'empty',
      tls: 'empty',
    },
  })

module: {
    rules: [rules.js(), rules.css()],
  },
  resolve: {
    alias: {
      'react-dom-lite$': `${__dirname}/lib/react-dom-lite.js`,
    },
  },
  plugins: [
    plugins.html({
      template: `${__dirname}/examples/index.html`,
    }),
    plugins.define({
      __SVG__: false,
    }),
    plugins.extractText(),
    new CompressionPlugin(),
  ],
};