fix eslint failures

app/assets/javascripts/lib/utils/datetime_utility.js

@@ -102,8 +102,7 @@ window.dateFormat = dateFormat;
     };
 
     w.gl.utils.updateTimeagoText = function(el) {
-      const timeago = gl.utils.getTimeago();
-      const formattedDate = timeago.format(el.getAttribute('datetime'), 'gl_en');
+      const formattedDate = gl.utils.getTimeago().format(el.getAttribute('datetime'), 'gl_en');
 
       if (el.textContent !== formattedDate) {
         el.textContent = formattedDate;

spec/javascripts/activities_spec.js

 /* eslint-disable no-unused-expressions, no-prototype-builtins, no-new, no-shadow, max-len */
 
-import 'vendor/jquery.endless-scroll.js';
+import 'vendor/jquery.endless-scroll';
 import '~/pager';
 import '~/activities';
 

spec/javascripts/boards/board_card_spec.js

@@ -11,7 +11,7 @@ import '~/boards/models/assignee';
 import '~/boards/models/list';
 import '~/boards/models/label';
 import '~/boards/stores/boards_store';
-const boardCard = require('~/boards/components/board_card').default;
+import boardCard from '~/boards/components/board_card';
 import './mock_data';
 
 describe('Issue card', () => {

spec/javascripts/merge_request_tabs_spec.js

 /* eslint-disable no-var, comma-dangle, object-shorthand */
 
 import '~/merge_request_tabs';
-import '~/commit/pipelines/pipelines_bundle.js';
+import '~/commit/pipelines/pipelines_bundle';
 import '~/breakpoints';
 import '~/lib/utils/common_utils';
 import '~/diff';