Подключение css файлов в webpack 2 (ReferenceError: ExtractTextPlugin)

const ExtractTextPlugin = require('extract-text-webpack-plugin'); 
 
module.exports = function(paths) { 
    return { 
        module: { 
            rules: [ 
                { 
                    test: /\.scss$/, 
                    include: paths, 
                    use: ExtractTextPlugin.extract({ 
                        publicPath: '../', 
                        fallback: 'style-loader', 
                        use: ['css-loader','sass-loader'], 
                    }), 
                }, 
                { 
                    test: /\.css$/, 
                    include: paths, 
                    use: ExtractTextPlugin.extract({ 
                        fallback: 'style-loader', 
                        use: 'css-loader', 
                    }), 
                }, 
            ], 
        }, 
        plugins: [ 
            new ExtractTextPlugin('./css/[name].css'), 
        ], 
    }; 
};

const webpack = require('webpack'); 
const UglifyJSPlugin = require('uglifyjs-webpack-plugin'); 
require("extract-text-webpack-plugin"); 
require('./css.extract'); 
 
 
module.exports = { 
    entry: 
        './zero.js', 
    output: { 
        filename: "./main.js" 
    }, 
    plugins: [ 
        new webpack.ProvidePlugin({ 
            $: 'jquery', 
            jQuery: 'jquery' 
        }), 
        new webpack.ProvidePlugin({ 
            Vue: ['vue/dist/vue.esm.js', 'default'] 
        }), 
        new UglifyJSPlugin(), 
        new ExtractTextPlugin("styles.css") 
    ] 
};