a

src/views/trace/index.vue

 <template>
-   <div>trace</div> 
+   <div>trace</div>
 </template>
 <script>
 export default {
   name: 'trace',
-  data() {
+  data () {
     return {
-      
     }
-  } 
+  }
 }
 </script>
 <style lang='scss'>