webpack vue-loader was used with

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

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

. Vue-loader在15.*之后的版本都是 vue-loader的使用都是需要伴生 VueLoaderPlugin的,

在webpack.config.js中加入

const VueLoaderPlugin = require('vue-loader/lib/plugin');

module.exports = {

    devtool: "sourcemap",

    entry: './js/entry.js', // 入口文件    output: {

        filename: 'bundle.js' // 打包出来的wenjian    },

    plugins: [

        // make sure to include the plugin for the magic        new VueLoaderPlugin()

    ],

    module : {

    ...

}

}

参照：https://blog.csdn.net/cominglately/article/details/80555210