[improvement] update eslint rules (#2089)

packages/address-edit/Detail.vue

@@ -23,8 +23,7 @@
       </span>
     </field>
     <cell
-      v-if="showSearchList"
-      v-for="express in searchResult"
+      v-for="express in searchList"
       :key="express.name + express.address"
       :title="express.name"
       :label="express.address"
@@ -61,8 +60,11 @@ export default create({
   },
 
   computed: {
-    showSearchList() {
-      return this.showSearchResult && this.focused && this.searchResult.length;
+    searchList() {
+      if (this.showSearchResult && this.focused) {
+        return this.searchResult || [];
+      };
+      return [];
     },
 
     showIcon() {