code: function cssLoaderOptions(options) {
    const DefaultCSSLoaderOptions = {
      modules: true,
      importLoaders: 1,
      camelCase: true,
      sourceMap: true,
      minimize: false
    }
    
    return {
      loader: 'css-loader',
      options: Object.assign({}, DefaultCSSLoaderOptions, options, {
        minimize: options.env === 'development' ? false : true
      })
    }
  }
docs: CSSLoader
  
  option.root: String = '/'
  option.modules: Boolean = false
  option.import: Boolean = true
  option.url: Boolean = true
  option.minimize: {Boolean|Object<any>} = false
  option.sourceMap: Boolean = false
  option.camelCase: Boolean = false
  option.importLoaders: Number = 0
  
  @link [css-loader](https://github.com/webpack-contrib/css-loader)
  @link [css nano](http://cssnano.co/optimisations/)