<div id="app"></div>
  <script src="dist/bundle.js"></script>

//引入node的path路徑組件和vueloader插件
const path = require('path');
const VueLoaderPlugin = require('vue-loader/lib/plugin');
module.exports = {
 //工作模式
 mode: 'development',
 //入口
 entry: path.resolve("./app/main.js"),
 //出口
 output: {
  publicPath:'dist',
  filename:"bundle.js"
 },
 module: {
 //配置loader
  rules: [{
   test: /.jsx?$/,
   include: [
    path.resolve(__dirname, 'app')
   ],
   exclude: [
    path.resolve(__dirname, 'node_modules')
   ],
  },
  {
   test: /\.vue$/,
   loader: 'vue-loader'
  },
  {
   test: /\.less$/,
   use: [
    'vue-style-loader',
    'css-loader',
    'less-loader'
   ]
  }
 ]
 },
 //雜項
 resolve: {
 //省略文件格式
  extensions: ['.json', '.js', '.jsx','vue']
 },
 plugins: [
 //使用vueloader插件
  new VueLoaderPlugin()
 ]
};

./App/main.js  //入口文件
import Vue from "vue";
import App from "./app.vue";
new Vue({
  el:"#app",
  render(h){
    return h(App)
  }
})

./App/app.vue //根組件
<template>
  <div>
    Hello World
  </div>
</template>
<script>
  export default {
  }
</script>
<style scoped>
</style>