Fixed eslint

app/assets/javascripts/boards/components/modal/filters.js.es6

 /* global Vue */
+const userFilter = require('./filters/user');
+const milestoneFilter = require('./filters/milestone');
+const labelFilter = require('./filters/label');
+
 module.exports = Vue.extend({
   name: 'modal-filters',
   props: {
@@ -19,9 +23,9 @@ module.exports = Vue.extend({
     gl.issueBoards.ModalStore.setDefaultFilter();
   },
   components: {
-    'user-filter': require('./filters/user'),
-    'milestone-filter': require('./filters/milestone'),
-    'label-filter': require('./filters/label'),
+    userFilter,
+    milestoneFilter,
+    labelFilter,
   },
   template: `
     <div class="modal-filters">

app/assets/javascripts/boards/components/modal/header.js.es6

 /* global Vue */
 require('./tabs');
+const modalFilters = require('./filters');
+
 (() => {
   const ModalStore = gl.issueBoards.ModalStore;
 
@@ -43,7 +45,7 @@ require('./tabs');
     },
     components: {
       'modal-tabs': gl.issueBoards.ModalTabs,
-      'modal-filters': require('./filters'),
+      modalFilters,
     },
     template: `
       <div>