初始化代码

src/main.js

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+import {createApp} from 'vue'
+import App from './home.vue'
+import router from './router/index'
+import ElementPlus from 'element-plus'
+import zhCn from 'element-plus/es/locale/lang/zh-cn'
+import mitt from 'mitt'
+import piniaPluginPersistedstate from 'pinia-plugin-persistedstate'
+
+import {createPinia} from 'pinia'
+const pinia = createPinia()
+pinia.use(piniaPluginPersistedstate)
+
+// ======================  样式  ======================
+import 'element-plus/dist/index.css'
+import '@/assets/styles/index.scss'
+
+// ======================  工具和组件  ======================
+import {initRem, fontSize} from '@/utils/rem'
+import IconSvg from '_c/icon/svgIcon.vue'
+
+// SVG图标注册
+import 'virtual:svg-icons-register'
+
+// 初始化rem适配
+initRem()
+
+// 创建事件总线
+const bus = mitt()
+
+// 创建应用实例
+const app = createApp(App)
+
+// 全局属性注册
+app.config.globalProperties.$fontSize = fontSize
+app.config.globalProperties.$bus = bus
+
+// 全局组件注册
+app.component('icon-svg', IconSvg)
+// 插件使用
+app.use(router).use(pinia).use(ElementPlus, {locale: zhCn})
+
+// 挂载应用
+app.mount('#app')