Vue加载单文件使用vue-loader报错vue-loader was used without the corresponding plugin. Make sure to include Vue

bug

报错信息如下:

vue-loader was used without the corresponding plugin. Make sure to include 
VueLoaderPlugin in your webpack config.

原因:

参考官方文档
https://vue-loader.vuejs.org/migrating.html#a-plugin-is-now-required

解决办法如下:

// webpack.config.js
const VueLoaderPlugin = require('vue-loader/lib/plugin')

module.exports = {
  // ...
  plugins: [
    new VueLoaderPlugin()
  ]
}