Fix CI JavaScript xo issues

Author: makyen

app/javascript/domain_links.js

@@ -5,4 +5,4 @@ onLoad(() => {
     $('.domain-links-list').append(data);
     $(ev.target).parents('.modal').modal('close');
   });
-});
+});

app/javascript/packs/application.js

@@ -16,9 +16,6 @@ import Turbolinks from 'turbolinks';
 import '../turbolinks_prefetch.coffee'; // The original is in coffee.
 Turbolinks.start();
 
-import createDebug from 'debug';
-const debug = createDebug('ms:app');
-
 import '../cable';
 
 import '../admin';
@@ -83,11 +80,11 @@ onLoad(() => {
 
   const formParameterCleanups = [];
 
-  $(document).on('submit', 'form', (ev) => {
+  $(document).on('submit', 'form', ev => {
     const tgt = $(ev.target);
     if (formParameterCleanups.indexOf(tgt[0]) === -1) {
       ev.preventDefault();
-      $(tgt.find(':input').toArray().filter(e => $(e).val() === "")).attr('disabled', true);
+      $(tgt.find(':input').toArray().filter(e => $(e).val() === '')).attr('disabled', true);
       formParameterCleanups.push(tgt[0]);
       tgt.submit();
     }

app/javascript/packs/vendor.js

@@ -6,4 +6,4 @@ import 'bootstrap-select';
 import 'jquery-tablesort';
 import 'jquery-ujs';
 import 'livestamp';
-import 'tagging';
+import 'tagging';

app/javascript/util.js

@@ -111,7 +111,7 @@ export function installSelectpickers() {
         clearTimeout(timeout);
       }
 
-      timeout = setTimeout(function () {
+      timeout = setTimeout(() => {
         sendSearchRequest(source, ev.target);
       }, 200);
     });