md/src/main.js

import Vue from "vue";
import App from "./App";
import store from "./store";
import ElementUI from "element-ui";
import "element-ui/lib/theme-chalk/index.css";
import "./plugins/element";
import "codemirror/lib/codemirror.css";
import "codemirror/theme/xq-light.css";
import "codemirror/mode/css/css";
import "codemirror/mode/markdown/markdown";
import "codemirror/addon/edit/closebrackets";
import "codemirror/addon/edit/matchbrackets";
import "codemirror/addon/selection/active-line";
import "codemirror/addon/hint/show-hint.js";
import "codemirror/addon/hint/css-hint.js";
import router from './router';

Vue.use(ElementUI);

Vue.config.productionTip = false;

App.mpType = "app";

const app = new Vue({
  router,
  store,
  ...App,
});
app.$mount("#app");