perf: 优化 pr 代码

src/main.ts

@@ -1,26 +1,19 @@
 import { createApp } from 'vue'
 import App from './App.vue'
+import { setupDirectives } from './directives'
 import { setupAssets } from '@/plugins'
 import { setupStore } from '@/store'
 import { setupRouter } from '@/router'
-import hljs from 'highlight.js'
-import "highlight.js/styles/xcode.css"
+
 async function bootstrap() {
   const app = createApp(App)
   setupAssets()
 
   setupStore(app)
 
-  await setupRouter(app)
+  setupDirectives(app)
 
-  let regexp = /^(?:\s{4}|\t).+/gm
-  app.directive('hljs', {
-    mounted: (el: HTMLElement) => {
-      if (el.textContent?.indexOf(" = ") != -1 || el.textContent.match(regexp)) {
-        hljs.highlightBlock(el)
-      }
-    }
-  })
+  await setupRouter(app)
 
   app.mount('#app')
 }