refactor: address comments and clean duplicate code due to merging.

Author: ulivz

lib/default-theme/NavLink.vue

@@ -3,13 +3,14 @@
     class="router-link"
     :to="link"
     v-if="!isExternal(link)"
-    exact
+    :exact="link === '/'"
   >{{ item.text }}</router-link>
   <a
     v-else
     :href="link"
     target="_blank"
     class="router-link"
+    rel="noopener noreferrer"
   >{{ item.text }}</a>
 </template>
 

lib/default-theme/NavLinks.vue

@@ -42,7 +42,7 @@
 
 <script>
 import OutboundLink from './OutboundLink.vue'
-import { isActive, ensureExt, resolveNavLinkItem, outboundRE } from './util'
+import { isActive, resolveNavLinkItem } from './util'
 import NavLink from './NavLink.vue'
 
 export default {