出现了同样的错误，根据https://vue-loader.vuejs.org/guide/提示，修改为如下内容即可。

const path = require('path')

const { VueLoaderPlugin } = require('vue-loader')

module.exports = {

mode: 'development',

entry: './src/index.js',

output: {

path: path.resolve(__dirname, 'dist'),

filename: 'bundle.js'

},

module: {

rules: [

{

test: /\.vue$/,

loader: 'vue-loader'

},

// this will apply to both plain .js files

// AND <script> blocks in vue files

{

test: /\.js$/,

loader: 'babel-loader'

},

// this will apply to both plain .css files

// AND <style> blocks in vue files

{

test: /\.css$/,

use: [

'vue-style-loader',

'css-loader'

]

}

]

},

plugins: [

// make sure to include the plugin for the magic

new VueLoaderPlugin()

]

}

可能还会有错误，例如“ERROR in Entry module not found: Error: Can't resolve 'babel-loader' in 'C:\Users\hbs\own\project\vuetest'”之类的，安装相应包即可。