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mail-vue/src/main.js

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+import {createApp} from 'vue';
+import App from './App.vue';
+import router from './router';
+import 'element-plus/dist/index.css';
+import './style.css';
+import ElementPlus from 'element-plus';
+import { createPinia } from 'pinia';
+import zhCn from 'element-plus/es/locale/lang/zh-cn';
+import piniaPersistedState from 'pinia-plugin-persistedstate';
+const pinia = createPinia().use(piniaPersistedState)
+const app = createApp(App).use(pinia)
+
+app.use(ElementPlus, {
+    locale: zhCn,
+});
+
+app.use(router)
+app.config.devtools = true;
+
+app.mount('#app');