require jQuery to be explicitly imported

.eslintrc

 {
   "env": {
-    "jquery": true,
     "browser": true,
     "es6": true
   },

app/assets/javascripts/activities.js

 /* eslint-disable no-param-reassign, class-methods-use-this */
+import $ from 'jquery';
 import Cookies from 'js-cookie';
 import Pager from './pager';
 import { localTimeAgo } from './lib/utils/datetime_utility';

app/assets/javascripts/ajax_loading_spinner.js

+import $ from 'jquery';
+
 export default class AjaxLoadingSpinner {
   static init() {
     const $elements = $('.js-ajax-loading-spinner');

app/assets/javascripts/api.js

+import $ from 'jquery';
 import _ from 'underscore';
 import axios from './lib/utils/axios_utils';

app/assets/javascripts/awards_handler.js

 /* eslint-disable class-methods-use-this */
+
+import $ from 'jquery';
 import _ from 'underscore';
 import Cookies from 'js-cookie';
 import { __ } from './locale';

app/assets/javascripts/behaviors/copy_as_gfm.js

 /* eslint-disable class-methods-use-this, object-shorthand, no-unused-vars, no-use-before-define, no-new, max-len, no-restricted-syntax, guard-for-in, no-continue */
+import $ from 'jquery';
 import _ from 'underscore';
 import { insertText, getSelectedFragment, nodeMatchesSelector } from '../lib/utils/common_utils';
 import { placeholderImage } from '../lazy_loader';

app/assets/javascripts/behaviors/copy_to_clipboard.js

+import $ from 'jquery';
 import Clipboard from 'clipboard';
 function showTooltip(target, title) {

app/assets/javascripts/behaviors/details_behavior.js

+import $ from 'jquery';
 $(() => {
   $('body').on('click', '.js-details-target', function target() {

app/assets/javascripts/behaviors/quick_submit.js

+import $ from 'jquery';
 import '../commons/bootstrap';
 import { isInIssuePage } from '../lib/utils/common_utils';

app/assets/javascripts/behaviors/requires_input.js

+import $ from 'jquery';
 import _ from 'underscore';
 import '../commons/bootstrap';

app/assets/javascripts/behaviors/toggler_behavior.js

+import $ from 'jquery';
+import { getLocationHash } from '../lib/utils/url_utility';
+
 // Toggle button. Show/hide content inside parent container.
 // Button does not change visibility. If button has icon - it changes chevron style.
 //
@@ -5,7 +8,6 @@
 //   %button.js-toggle-button
 //   %div.js-toggle-content
 //
-import { getLocationHash } from '../lib/utils/url_utility';
 $(() => {
   function toggleContainer(container, toggleState) {

app/assets/javascripts/blob/blob_file_dropzone.js

 /* eslint-disable func-names, object-shorthand, prefer-arrow-callback */
+
+import $ from 'jquery';
 import Dropzone from 'dropzone';
 import { visitUrl } from '../lib/utils/url_utility';
 import { HIDDEN_CLASS } from '../lib/utils/constants';

app/assets/javascripts/blob/blob_fork_suggestion.js

+import $ from 'jquery';
+
 const defaults = {
   // Buttons that will show the `suggestionSections`
   // has `data-fork-path`, and `data-action`

app/assets/javascripts/blob/file_template_mediator.js

 /* eslint-disable class-methods-use-this */
+
+import $ from 'jquery';
 import Flash from '../flash';
 import FileTemplateTypeSelector from './template_selectors/type_selector';
 import BlobCiYamlSelector from './template_selectors/ci_yaml_selector';

app/assets/javascripts/blob/file_template_selector.js

+import $ from 'jquery';
+
 export default class FileTemplateSelector {
   constructor(mediator) {
     this.mediator = mediator;

app/assets/javascripts/blob/template_selector.js

 /* eslint-disable class-methods-use-this, no-unused-vars */
+import $ from 'jquery';
+
 export default class TemplateSelector {
   constructor({ dropdown, data, pattern, wrapper, editor, $input } = {}) {
     this.pattern = pattern;
@@ -76,7 +78,7 @@ export default class TemplateSelector {
     if (!skipFocus) this.editor.focus();
-    if (this.editor instanceof jQuery) {
+    if (this.editor instanceof $) {
       this.editor.get(0).dispatchEvent(this.autosizeUpdateEvent);
     }
   }

app/assets/javascripts/blob/viewer/index.js

+import $ from 'jquery';
 import Flash from '../../flash';
 import { handleLocationHash } from '../../lib/utils/common_utils';
 import axios from '../../lib/utils/axios_utils';

app/assets/javascripts/blob_edit/blob_bundle.js

 /* eslint-disable func-names, space-before-function-paren, prefer-arrow-callback, no-var, quotes, vars-on-top, no-unused-vars, no-new, max-len */
 /* global EditBlob */
+
+import $ from 'jquery';
 import NewCommitForm from '../new_commit_form';
 import EditBlob from './edit_blob';
 import BlobFileDropzone from '../blob/blob_file_dropzone';

app/assets/javascripts/blob_edit/edit_blob.js

 /* global ace */
+import $ from 'jquery';
 import axios from '~/lib/utils/axios_utils';
 import createFlash from '~/flash';
 import { __ } from '~/locale';

app/assets/javascripts/boards/components/board.js

 /* eslint-disable comma-dangle, space-before-function-paren, one-var */
+
+import $ from 'jquery';
 import Sortable from 'vendor/Sortable';
 import Vue from 'vue';
 import AccessorUtilities from '../../lib/utils/accessor';