extract-text-webpack-plugin打包.vue文件中的styl部分生成一个css是文件失败

Question

这是webpack.config.js

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const CleanWebpackPlugin = require('clean-webpack-plugin');
const UglifyJSPlugin = require('uglifyjs-webpack-plugin');
const ExtractTextPlugin = require("extract-text-webpack-plugin")
const webpack = require('webpack');

module.exports = {
    entry: {
        coco: './src/main.js'
    },
    devtool: 'inline-source-map',
    output: {
        filename: '[hash].js',
        path: path.resolve(__dirname, 'dist'),
        publicPath: '/'
    },
    devServer: {
        contentBase: './dist',
        hot: true
    },
    module: {
        rules: [{
                test: /\.(png|svg|jpg|gif|woff|woff2|eot|ttf|otf)$/,
                use: ['file-loader']
            },
            {
                test: /\.vue$/,
                exclude: /node_modules/,
                use: [{
                    loader: 'vue-loader',
                    options: {
                        loaders: {
                            use: ExtractTextPlugin.extract({
                                fallback: 'style-loader',
                                use: ['css-loader', 'stylus-loader']
                            })
                        }
                    }
                }]
            }, {
                test: /\.(css|styl)$/,
                use: ExtractTextPlugin.extract({
                    fallback: 'style-loader',
                    use: ['css-loader', 'stylus-loader']
                })
            },
            //  {
            //     enforce: "pre",
            //     test: /\.js$/,
            //     exclude: /node_modules/,
            //     loader: "eslint-loader",
            //     options: {

            //     }
            // }, 
            {
                test: /\.js$/,
                exclude: /(node_modules|bower_components)/,
                use: {
                    loader: 'babel-loader',
                    options: {
                        presets: ['env']
                    }
                }
            }
        ]
    },
    plugins: [
        new UglifyJSPlugin(),
        new CleanWebpackPlugin(['dist']),
        new HtmlWebpackPlugin({
            title: 'coding',
            template: path.resolve(__dirname, './index.html'),
            // filename: 'coco.html',
            favicon: './src/images/OEM/coco.ico',
            hash: true,
            cache: true,
            showErrors: true
        }),
        new ExtractTextPlugin({
            filename: 'styles.css',
            allChunks: true,
        }),
        new webpack.NamedModulesPlugin(),
        new webpack.HotModuleReplacementPlugin()
    ],
    resolve: {
        extensions: ['.js', '.vue', '.json'],
        alias: {
            'vue': 'vue/dist/vue.js'
        }
    }
};

大神帮忙看一眼有哪里不对吗(build和run都没有报错.)