Merge branch 'leipert-no-unused-vars' into 'master'

Fix all instances of no-unused-vars

See merge request gitlab-org/gitlab!16684

app/assets/javascripts/blob/template_selector.js

-/* eslint-disable class-methods-use-this, no-unused-vars */
+/* eslint-disable class-methods-use-this */
 
 import $ from 'jquery';
 
@@ -61,7 +61,7 @@ export default class TemplateSelector {
     return this.requestFile(item);
   }
 
-  requestFile(item) {
+  requestFile() {
     // This `requestFile` method is an abstract method that should
     // be added by all subclasses.
   }

app/assets/javascripts/commit/image_file.js

-/* eslint-disable func-names, no-var, prefer-arrow-callback, no-else-return, consistent-return, prefer-template, one-var, no-unused-vars, no-return-assign, no-unused-expressions, no-sequences */
+/* eslint-disable func-names, no-var, prefer-arrow-callback, no-else-return, consistent-return, prefer-template, one-var, no-return-assign, no-unused-expressions, no-sequences */
 
 import $ from 'jquery';
 
@@ -12,11 +12,8 @@ export default class ImageFile {
     this.requestImageInfo(
       $('.two-up.view .frame.deleted img', this.file),
       (function(_this) {
-        return function(deletedWidth, deletedHeight) {
-          return _this.requestImageInfo($('.two-up.view .frame.added img', _this.file), function(
-            width,
-            height,
-          ) {
+        return function() {
+          return _this.requestImageInfo($('.two-up.view .frame.added img', _this.file), function() {
             _this.initViewModes();
 
             // Load two-up view after images are loaded
@@ -112,7 +109,7 @@ export default class ImageFile {
     maxHeight = 0;
     $('.frame', view)
       .each(
-        (function(_this) {
+        (function() {
           return function(index, frame) {
             var height, width;
             width = $(frame).width();
@@ -196,13 +193,7 @@ export default class ImageFile {
       return $('.onion-skin.view', this.file).each(
         (function(_this) {
           return function(index, view) {
-            var $frame,
-              $track,
-              $dragger,
-              $frameAdded,
-              framePadding,
-              ref,
-              dragging = false;
+            var $frame, $track, $dragger, $frameAdded, framePadding, ref;
             (ref = _this.prepareFrames(view)), ([maxWidth, maxHeight] = ref);
             $frame = $('.onion-skin-frame', view);
             $frameAdded = $('.frame.added', view);

app/assets/javascripts/gl_dropdown.js

-/* eslint-disable func-names, no-underscore-dangle, no-var, one-var, vars-on-top, no-unused-vars, no-shadow, no-cond-assign, prefer-arrow-callback, no-return-assign, no-else-return, camelcase, no-lonely-if, guard-for-in, no-restricted-syntax, consistent-return, prefer-template, no-param-reassign, no-loop-func */
-/* global fuzzaldrinPlus */
+/* eslint-disable func-names, no-underscore-dangle, no-var, one-var, vars-on-top, no-shadow, no-cond-assign, prefer-arrow-callback, no-return-assign, no-else-return, camelcase, no-lonely-if, guard-for-in, no-restricted-syntax, consistent-return, prefer-template, no-param-reassign, no-loop-func */
 
 import $ from 'jquery';
 import _ from 'underscore';
@@ -66,12 +65,10 @@ GitLabDropdownInput = (function() {
 })();
 
 GitLabDropdownFilter = (function() {
-  var ARROW_KEY_CODES, BLUR_KEYCODES, HAS_VALUE_CLASS;
+  var BLUR_KEYCODES, HAS_VALUE_CLASS;
 
   BLUR_KEYCODES = [27, 40];
 
-  ARROW_KEY_CODES = [38, 40];
-
   HAS_VALUE_CLASS = 'has-value';
 
   function GitLabDropdownFilter(input, options) {
@@ -877,9 +874,8 @@ GitLabDropdown = (function() {
   };
 
   GitLabDropdown.prototype.addArrowKeyEvent = function() {
-    var $input, ARROW_KEY_CODES, selector;
+    var ARROW_KEY_CODES, selector;
     ARROW_KEY_CODES = [38, 40];
-    $input = this.dropdown.find('.dropdown-input-field');
     selector = SELECTABLE_CLASSES;
     if (this.dropdown.find('.dropdown-toggle-page').length) {
       selector = '.dropdown-page-one ' + selector;

app/assets/javascripts/issue.js

-/* eslint-disable no-var, one-var, no-unused-vars, consistent-return */
+/* eslint-disable no-var, one-var, consistent-return */
 
 import $ from 'jquery';
 import axios from './lib/utils/axios_utils';
 import { addDelimiter } from './lib/utils/text_utility';
 import flash from './flash';
-import TaskList from './task_list';
 import CreateMergeRequestDropdown from './create_merge_request_dropdown';
 import IssuablesHelper from './helpers/issuables_helper';
 import { __ } from './locale';

app/assets/javascripts/label_manager.js

-/* eslint-disable  class-methods-use-this, no-underscore-dangle, no-param-reassign, no-unused-vars, func-names */
+/* eslint-disable  class-methods-use-this, no-underscore-dangle, no-param-reassign, func-names */
 
 import $ from 'jquery';
 import Sortable from 'sortablejs';
@@ -50,7 +50,7 @@ export default class LabelManager {
     $(e.currentTarget).tooltip('hide');
   }
 
-  toggleEmptyState($label, $btn, action) {
+  toggleEmptyState() {
     this.emptyState.classList.toggle(
       'hidden',
       Boolean(this.prioritizedLabels[0].querySelector(':scope > li')),
@@ -61,7 +61,6 @@ export default class LabelManager {
     if (persistState == null) {
       persistState = true;
     }
-    const _this = this;
     const url = $label.find('.js-toggle-priority').data('url');
     let $target = this.prioritizedLabels;
     let $from = this.otherLabels;

app/assets/javascripts/labels_select.js

-/* eslint-disable no-useless-return, func-names, no-var, no-underscore-dangle, prefer-arrow-callback, one-var, no-unused-vars, prefer-template, no-new, consistent-return, object-shorthand, no-shadow, no-param-reassign, vars-on-top, no-lonely-if, no-else-return, dot-notation, no-empty */
+/* eslint-disable no-useless-return, func-names, no-var, no-underscore-dangle, prefer-arrow-callback, one-var, prefer-template, no-new, consistent-return, object-shorthand, no-shadow, no-param-reassign, vars-on-top, no-lonely-if, no-else-return, dot-notation, no-empty */
 /* global Issuable */
 /* global ListLabel */
 
@@ -26,7 +26,6 @@ export default class LabelsSelect {
 
     $els.each(function(i, dropdown) {
       var $block,
-        $colorPreview,
         $dropdown,
         $form,
         $loading,
@@ -35,8 +34,6 @@ export default class LabelsSelect {
         $value,
         abilityName,
         defaultLabel,
-        enableLabelCreateButton,
-        issueURLSplit,
         issueUpdateURL,
         labelUrl,
         namespacePath,
@@ -47,16 +44,11 @@ export default class LabelsSelect {
         showNo,
         $sidebarLabelTooltip,
         initialSelected,
-        $toggleText,
         fieldName,
-        useId,
-        propertyName,
         showMenuAbove,
-        $container,
         $dropdownContainer;
       $dropdown = $(dropdown);
       $dropdownContainer = $dropdown.closest('.labels-filter');
-      $toggleText = $dropdown.find('.dropdown-toggle-text');
       namespacePath = $dropdown.data('namespacePath');
       projectPath = $dropdown.data('projectPath');
       issueUpdateURL = $dropdown.data('issueUpdate');
@@ -77,10 +69,6 @@ export default class LabelsSelect {
       $value = $block.find('.value');
       $loading = $block.find('.block-loading').fadeOut();
       fieldName = $dropdown.data('fieldName');
-      useId = $dropdown.is(
-        '.js-issuable-form-dropdown, .js-filter-bulk-update, .js-label-sidebar-dropdown',
-      );
-      propertyName = useId ? 'id' : 'title';
       initialSelected = $selectbox
         .find('input[name="' + $dropdown.data('fieldName') + '"]')
         .map(function() {
@@ -124,7 +112,7 @@ export default class LabelsSelect {
         axios
           .put(issueUpdateURL, data)
           .then(({ data }) => {
-            var labelCount, template, labelTooltipTitle, labelTitles, formattedLabels;
+            var labelCount, template, labelTooltipTitle, labelTitles;
             $loading.fadeOut();
             $dropdown.trigger('loaded.gl.dropdown');
             $selectbox.hide();
@@ -246,12 +234,10 @@ export default class LabelsSelect {
         renderRow: function(label) {
           var linkEl,
             listItemEl,
-            color,
             colorEl,
             indeterminate,
             removesAll,
             selectedClass,
-            spacing,
             i,
             marked,
             dropdownValue;
@@ -378,7 +364,7 @@ export default class LabelsSelect {
           }
         },
         hidden: function() {
-          var isIssueIndex, isMRIndex, page, selectedLabels;
+          var isIssueIndex, isMRIndex, page;
           page = $('body').attr('data-page');
           isIssueIndex = page === 'projects:issues:index';
           isMRIndex = page === 'projects:merge_requests:index';
@@ -395,9 +381,6 @@ export default class LabelsSelect {
           }
           if ($dropdown.hasClass('js-multiselect')) {
             if ($dropdown.hasClass('js-filter-submit') && (isIssueIndex || isMRIndex)) {
-              selectedLabels = $dropdown
-                .closest('form')
-                .find("input:hidden[name='" + $dropdown.data('fieldName') + "']");
               Issuable.filterResults($dropdown.closest('form'));
             } else if ($dropdown.hasClass('js-filter-submit')) {
               $dropdown.closest('form').submit();
@@ -495,7 +478,7 @@ export default class LabelsSelect {
             }
           }
         },
-        opened: function(e) {
+        opened: function() {
           if ($dropdown.hasClass('js-issue-board-sidebar')) {
             const previousSelection = $dropdown.attr('data-selected');
             this.selected = previousSelection ? previousSelection.split(',') : [];

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

-/* eslint-disable func-names, no-var, no-param-reassign, one-var, operator-assignment, no-else-return, prefer-template, prefer-arrow-callback, consistent-return, no-unused-vars */
+/* eslint-disable func-names, no-var, no-param-reassign, one-var, operator-assignment, no-else-return, prefer-template, prefer-arrow-callback, consistent-return */
 import $ from 'jquery';
 import { insertText } from '~/lib/utils/common_utils';
 
@@ -157,7 +157,7 @@ export function insertMarkdownText({
   if (tag === LINK_TAG_PATTERN) {
     if (URL) {
       try {
-        const ignoredUrl = new URL(selected);
+        new URL(selected); // eslint-disable-line no-new
         // valid url
         tag = '[text]({text})';
         select = 'text';

app/assets/javascripts/milestone_select.js

-/* eslint-disable one-var, no-unused-vars, object-shorthand, no-else-return, no-self-compare, consistent-return, no-param-reassign, no-shadow */
+/* eslint-disable one-var, object-shorthand, no-else-return, no-self-compare, consistent-return, no-param-reassign, no-shadow */
 /* global Issuable */
 /* global ListMilestone */
 
@@ -37,7 +37,6 @@ export default class MilestoneSelect {
         selectedMilestone,
         selectedMilestoneDefault;
       const $dropdown = $(dropdown);
-      const projectId = $dropdown.data('projectId');
       const milestonesUrl = $dropdown.data('milestones');
       const issueUpdateURL = $dropdown.data('issueUpdate');
       const showNo = $dropdown.data('showNo');
@@ -48,7 +47,6 @@ export default class MilestoneSelect {
       const useId = $dropdown.data('useId');
       const defaultLabel = $dropdown.data('defaultLabel');
       const defaultNo = $dropdown.data('defaultNo');
-      const issuableId = $dropdown.data('issuableId');
       const abilityName = $dropdown.data('abilityName');
       const $selectBox = $dropdown.closest('.selectbox');
       const $block = $selectBox.closest('.block');
@@ -121,7 +119,7 @@ export default class MilestoneSelect {
           fields: ['title'],
         },
         selectable: true,
-        toggleLabel: (selected, el, e) => {
+        toggleLabel: (selected, el) => {
           if (selected && 'id' in selected && $(el).hasClass('is-active')) {
             return selected.title;
           } else {
@@ -153,7 +151,7 @@ export default class MilestoneSelect {
         },
         vue: $dropdown.hasClass('js-issue-board-sidebar'),
         clicked: clickEvent => {
-          const { $el, e } = clickEvent;
+          const { e } = clickEvent;
           let selected = clickEvent.selectedObj;
 
           let data, modalStoreFilter;

app/assets/javascripts/network/branch_graph.js

-/* eslint-disable func-names, no-var, one-var, no-loop-func, consistent-return, no-unused-vars, prefer-template, prefer-arrow-callback, camelcase */
+/* eslint-disable func-names, no-var, one-var, no-loop-func, consistent-return, prefer-template, prefer-arrow-callback, camelcase */
 
 import $ from 'jquery';
 import { __ } from '../locale';
 import axios from '../lib/utils/axios_utils';
-import flash from '../flash';
 import Raphael from './raphael';
 
 export default (function() {
@@ -104,7 +103,7 @@ export default (function() {
   };
 
   BranchGraph.prototype.buildGraph = function() {
-    var cuday, cumonth, day, j, len, mm, ref;
+    var cuday, cumonth, day, len, mm, ref;
     const { r } = this;
     cuday = 0;
     cumonth = '';
@@ -178,7 +177,7 @@ export default (function() {
 
     return $(element).scroll(
       (function(_this) {
-        return function(event) {
+        return function() {
           return _this.renderPartialGraph();
         };
       })(this),
@@ -214,7 +213,7 @@ export default (function() {
   };
 
   BranchGraph.prototype.appendLabel = function(x, y, commit) {
-    var label, rect, shortrefs, text, textbox, triangle;
+    var label, rect, shortrefs, text, textbox;
 
     if (!commit.refs) {
       return;
@@ -239,7 +238,8 @@ export default (function() {
       'fill-opacity': 0.5,
       stroke: 'none',
     });
-    triangle = r.path(['M', x - 5, y, 'L', x - 15, y - 4, 'L', x - 15, y + 4, 'Z']).attr({
+    // Generate the triangle right of the tag box
+    r.path(['M', x - 5, y, 'L', x - 15, y - 4, 'L', x - 15, y + 4, 'Z']).attr({
       fill: '#000',
       'fill-opacity': 0.5,
       stroke: 'none',

app/assets/javascripts/notes.js

@@ -2,10 +2,9 @@
 no-unused-expressions, one-var, default-case,
 prefer-template, consistent-return, no-alert, no-return-assign,
 no-param-reassign, prefer-arrow-callback, no-else-return, vars-on-top,
-no-unused-vars, no-shadow, no-useless-escape, class-methods-use-this */
+no-shadow, no-useless-escape, class-methods-use-this */
 
 /* global ResolveService */
-/* global mrRefreshWidgetUrl */
 
 /*
 old_notes_spec.js is the spec for the legacy, jQuery notes application. It has nothing to do with the new, fancy Vue notes app.
@@ -37,7 +36,6 @@ import {
   isMetaKey,
   isInMRPage,
 } from './lib/utils/common_utils';
-import imageDiffHelper from './image_diff/helpers/index';
 import { localTimeAgo } from './lib/utils/datetime_utility';
 import { sprintf, s__, __ } from './locale';
 
@@ -683,7 +681,7 @@ export default class Notes {
     );
   }
 
-  updateNoteError($parentTimeline) {
+  updateNoteError() {
     // eslint-disable-next-line no-new
     new Flash(
       __('Your comment could not be updated! Please check your network connection and try again.'),
@@ -697,7 +695,6 @@ export default class Notes {
    */
   addDiscussionNote($form, note, isNewDiffComment) {
     if ($form.attr('data-resolve-all') != null) {
-      var projectPath = $form.data('projectPath');
       var discussionId = $form.data('discussionId');
       var mergeRequestId = $form.data('noteableIid');
 
@@ -746,7 +743,6 @@ export default class Notes {
     if (currentContent === initialContent) {
       this.removeNoteEditForm($el);
     } else {
-      var $buttons = $el.find('.note-form-actions');
       var isWidgetVisible = isInViewport($el.get(0));
 
       if (!isWidgetVisible) {
@@ -766,7 +762,7 @@ export default class Notes {
    * Replaces the note text with the note edit form
    * Adds a data attribute to the form with the original content of the note for cancellations
    */
-  showEditForm(e, scrollTo, myLastNote) {
+  showEditForm(e) {
     e.preventDefault();
 
     var $target = $(e.target);
@@ -850,16 +846,11 @@ export default class Notes {
    * Removes the whole discussion if the last note is being removed.
    */
   removeNote(e) {
-    var noteElId, noteId, dataNoteId, $note, lineHolder;
+    var noteElId, $note;
     $note = $(e.currentTarget).closest('.note');
     noteElId = $note.attr('id');
-    noteId = $note.attr('data-note-id');
-    lineHolder = $(e.currentTarget)
-      .closest('.notes[data-discussion-id]')
-      .closest('.notes_holder')
-      .prev('.line_holder');
     $(`.note[id="${noteElId}"]`).each(
-      (function(_this) {
+      (function() {
         // A same note appears in the "Discussion" and in the "Changes" tab, we have
         // to remove all. Using $('.note[id='noteId']') ensure we get all the notes,
         // where $('#noteId') would return only one.
@@ -1064,25 +1055,8 @@ export default class Notes {
     this.setupDiscussionNoteForm($link, newForm);
   }
 
-  toggleDiffNote({
-    target,
-    lineType,
-    forceShow,
-    showReplyInput = false,
-    currentUsername,
-    currentUserAvatar,
-    currentUserFullname,
-  }) {
-    var $link,
-      addForm,
-      hasNotes,
-      newForm,
-      noteForm,
-      replyButton,
-      row,
-      rowCssToAdd,
-      targetContent,
-      isDiffCommentAvatar;
+  toggleDiffNote({ target, lineType, forceShow, showReplyInput = false }) {
+    var $link, addForm, hasNotes, newForm, noteForm, replyButton, row, rowCssToAdd;
     $link = $(target);
     row = $link.closest('tr');
     const nextRow = row.next();
@@ -1515,7 +1489,7 @@ export default class Notes {
     let tempFormContent;
 
     // Identify executed quick actions from `formContent`
-    const executedCommands = availableQuickActions.filter((command, index) => {
+    const executedCommands = availableQuickActions.filter(command => {
       const commandRegex = new RegExp(`/${command.name}`);
       return commandRegex.test(formContent);
     });
@@ -1840,8 +1814,6 @@ export default class Notes {
     const $noteBody = $editingNote.find('.js-task-list-container');
     const $noteBodyText = $noteBody.find('.note-text');
     const { formData, formContent, formAction } = this.getFormData($form);
-    const $diffFile = $form.closest('.diff-file');
-    const $notesContainer = $form.closest('.notes');
 
     // Cache original comment content
     const cachedNoteBodyText = $noteBodyText.html();

app/assets/javascripts/pages/projects/graphs/show/stat_graph_contributors_util.js

-/* eslint-disable func-names, object-shorthand, no-var, one-var, camelcase, no-param-reassign, no-return-assign, prefer-arrow-callback, consistent-return, no-unused-vars, no-cond-assign, no-else-return */
+/* eslint-disable func-names, object-shorthand, no-var, one-var, camelcase, no-param-reassign, no-return-assign, prefer-arrow-callback, consistent-return, no-cond-assign, no-else-return */
 import _ from 'underscore';
 
 export default {
@@ -126,7 +126,7 @@ export default {
     _.each(
       _.omit(log_entry, 'author_name', 'author_email'),
       (function(_this) {
-        return function(value, key) {
+        return function(value) {
           if (_this.in_range(value.date, date_range)) {
             parsed_entry.dates[value.date] = value[field];
             parsed_entry.commits += value.commits;

app/assets/javascripts/profile/gl_crop.js

-/* eslint-disable no-useless-escape, no-var, no-underscore-dangle, func-names, no-unused-vars, no-return-assign, object-shorthand, one-var, consistent-return, class-methods-use-this */
+/* eslint-disable no-useless-escape, no-var, no-underscore-dangle, func-names, no-return-assign, object-shorthand, one-var, consistent-return, class-methods-use-this */
 
 import $ from 'jquery';
 import 'cropper';
 import _ from 'underscore';
 
-(global => {
+(() => {
   // Matches everything but the file name
   const FILENAMEREGEX = /^.*[\\\/]/;
 
@@ -69,7 +69,7 @@ import _ from 'underscore';
       this.modalCrop.on('shown.bs.modal', this.onModalShow);
       this.modalCrop.on('hidden.bs.modal', this.onModalHide);
       this.uploadImageBtn.on('click', this.onUploadImageBtnClick);
-      this.cropActionsBtn.on('click', function(e) {
+      this.cropActionsBtn.on('click', function() {
         var btn;
         btn = this;
         return _this.onActionBtnClick(btn);
@@ -128,10 +128,10 @@ import _ from 'underscore';
     }
 
     onActionBtnClick(btn) {
-      var data, result;
+      var data;
       data = $(btn).data();
       if (this.modalCropImg.data('cropper') && data.method) {
-        return (result = this.modalCropImg.cropper(data.method, data.option));
+        return this.modalCropImg.cropper(data.method, data.option);
       }
     }
 
@@ -151,12 +151,11 @@ import _ from 'underscore';
     }
 
     dataURLtoBlob(dataURL) {
-      var array, binary, i, len, v;
+      var array, binary, i, len;
       binary = atob(dataURL.split(',')[1]);
       array = [];
 
       for (i = 0, len = binary.length; i < len; i += 1) {
-        v = binary[i];
         array.push(binary.charCodeAt(i));
       }
       return new Blob([new Uint8Array(array)], {

app/assets/javascripts/project_find_file.js

-/* eslint-disable func-names, no-var, consistent-return, one-var, no-cond-assign, prefer-template, no-unused-vars, no-return-assign */
+/* eslint-disable func-names, no-var, consistent-return, one-var, no-cond-assign, prefer-template, no-return-assign */
 
 import $ from 'jquery';
 import fuzzaldrinPlus from 'fuzzaldrin-plus';
@@ -8,9 +8,8 @@ import { __ } from '~/locale';
 
 // highlight text(awefwbwgtc -> <b>a</b>wefw<b>b</b>wgt<b>c</b> )
 const highlighter = function(element, text, matches) {
-  var highlightText, j, lastIndex, len, matchIndex, matchedChars, unmatched;
+  var j, lastIndex, len, matchIndex, matchedChars, unmatched;
   lastIndex = 0;
-  highlightText = '';
   matchedChars = [];
   for (j = 0, len = matches.length; j < len; j += 1) {
     matchIndex = matches[j];

app/assets/javascripts/right_sidebar.js

-/* eslint-disable func-names, no-var, no-unused-vars, consistent-return, one-var, prefer-template, no-else-return, no-param-reassign */
+/* eslint-disable func-names, no-var, consistent-return, one-var, prefer-template, no-else-return, no-param-reassign */
 
 import $ from 'jquery';
 import _ from 'underscore';
@@ -7,7 +7,7 @@ import flash from './flash';
 import axios from './lib/utils/axios_utils';
 import { sprintf, s__, __ } from './locale';
 
-function Sidebar(currentUser) {
+function Sidebar() {
   this.toggleTodo = this.toggleTodo.bind(this);
   this.sidebar = $('aside');
 
@@ -15,9 +15,9 @@ function Sidebar(currentUser) {
   this.addEventListeners();
 }
 
-Sidebar.initialize = function(currentUser) {
+Sidebar.initialize = function() {
   if (!this.instance) {
-    this.instance = new Sidebar(currentUser);
+    this.instance = new Sidebar();
   }
 };
 
@@ -77,7 +77,7 @@ Sidebar.prototype.sidebarToggleClicked = function(e, triggered) {
 };
 
 Sidebar.prototype.toggleTodo = function(e) {
-  var $btnText, $this, $todoLoading, ajaxType, url;
+  var $this, ajaxType, url;
   $this = $(e.currentTarget);
   ajaxType = $this.data('deletePath') ? 'delete' : 'post';
 
@@ -140,7 +140,7 @@ Sidebar.prototype.todoUpdateDone = function(data) {
   });
 };
 
-Sidebar.prototype.sidebarDropdownLoading = function(e) {
+Sidebar.prototype.sidebarDropdownLoading = function() {
   var $loading, $sidebarCollapsedIcon, i, img;
   $sidebarCollapsedIcon = $(this)
     .closest('.block')
@@ -157,7 +157,7 @@ Sidebar.prototype.sidebarDropdownLoading = function(e) {
   }
 };
 
-Sidebar.prototype.sidebarDropdownLoaded = function(e) {
+Sidebar.prototype.sidebarDropdownLoaded = function() {
   var $sidebarCollapsedIcon, i, img;
   $sidebarCollapsedIcon = $(this)
     .closest('.block')

app/assets/javascripts/search_autocomplete.js

-/* eslint-disable no-return-assign, one-var, no-var, no-unused-vars, consistent-return, object-shorthand, prefer-template, class-methods-use-this, no-lonely-if, vars-on-top */
+/* eslint-disable no-return-assign, one-var, no-var, consistent-return, object-shorthand, prefer-template, class-methods-use-this, no-lonely-if, vars-on-top */
 
 import $ from 'jquery';
 import { escape, throttle } from 'underscore';
-import { s__, __, sprintf } from '~/locale';
+import { s__, __ } from '~/locale';
 import { getIdenticonBackgroundClass, getIdenticonTitle } from '~/helpers/avatar_helper';
 import axios from './lib/utils/axios_utils';
-import DropdownUtils from './filtered_search/dropdown_utils';
 import {
   isInGroupsPage,
   isInProjectPage,
@@ -142,7 +141,7 @@ export class SearchAutocomplete {
     });
   }
 
-  getSearchText(selectedObject, el) {
+  getSearchText(selectedObject) {
     return selectedObject.id ? selectedObject.text : '';
   }
 
@@ -402,7 +401,7 @@ export class SearchAutocomplete {
     return this.searchInput.val('').focus();
   }
 
-  onSearchInputBlur(e) {
+  onSearchInputBlur() {
     this.isFocused = false;
     this.wrap.removeClass('search-active');
     // If input is blank then restore state

app/assets/javascripts/users_select.js

-/* eslint-disable func-names, one-var, no-var, prefer-rest-params, vars-on-top, prefer-arrow-callback, consistent-return, object-shorthand, no-shadow, no-unused-vars, no-else-return, no-self-compare, prefer-template, no-unused-expressions, yoda, prefer-spread, camelcase, no-param-reassign */
+/* eslint-disable func-names, one-var, no-var, prefer-rest-params, vars-on-top, prefer-arrow-callback, consistent-return, object-shorthand, no-shadow, no-else-return, no-self-compare, prefer-template, no-unused-expressions, yoda, prefer-spread, camelcase, no-param-reassign */
 /* global Issuable */
 /* global emitSidebarEvent */
 
@@ -405,7 +405,7 @@ function UsersSelect(currentUser, els, options = {}) {
             }
           },
           defaultLabel: defaultLabel,
-          hidden: function(e) {
+          hidden: function() {
             if ($dropdown.hasClass('js-multiselect')) {
               emitSidebarEvent('sidebar.saveAssignees');
             }
@@ -442,7 +442,6 @@ function UsersSelect(currentUser, els, options = {}) {
               if (user.beforeDivider && user.name.toLowerCase() === 'unassigned') {
                 // Unassigned selected
                 previouslySelected.each((index, element) => {
-                  const id = parseInt(element.value, 10);
                   element.remove();
                 });
                 emitSidebarEvent('sidebar.removeAllAssignees');
@@ -548,7 +547,7 @@ function UsersSelect(currentUser, els, options = {}) {
           },
           updateLabel: $dropdown.data('dropdownTitle'),
           renderRow: function(user) {
-            var avatar, img, listClosingTags, listWithName, listWithUserName, username;
+            var avatar, img, username;
             username = user.username ? '@' + user.username : '';
             avatar = user.avatar_url ? user.avatar_url : gon.default_avatar_url;
 

app/assets/javascripts/zen_mode.js

-/* eslint-disable func-names, prefer-arrow-callback, no-unused-vars, consistent-return, camelcase, class-methods-use-this */
+/* eslint-disable func-names, prefer-arrow-callback, consistent-return, camelcase, class-methods-use-this */
 
 // Zen Mode (full screen) textarea
 //
@@ -62,7 +62,7 @@ export default class ZenMode {
     $(document).on(
       'zen_mode:leave',
       (function(_this) {
-        return function(e) {
+        return function() {
           return _this.exit();
         };
       })(this),

ee/app/assets/javascripts/ldap_groups_select.js

-/* eslint-disable prefer-arrow-callback, no-var, one-var, object-shorthand, consistent-return, no-unused-vars, func-names */
+/* eslint-disable prefer-arrow-callback, no-var, one-var, object-shorthand, consistent-return, func-names */
 
 import $ from 'jquery';
 import Api from 'ee/api';
@@ -44,7 +44,7 @@ export default function initLDAPGroupsSelect() {
           formatResult: ldapGroupResult,
           formatSelection: groupFormatSelection,
           dropdownCssClass: 'ajax-groups-dropdown',
-          formatNoMatches: function(nomatch) {
+          formatNoMatches: function() {
             return __('Match not found; try refining your search query.');
           },
         });

ee/app/assets/javascripts/pages/admin/emails/show/admin_email_select.js

-/* eslint-disable no-var, func-names, camelcase, no-unused-vars, object-shorthand, one-var, prefer-arrow-callback, prefer-template, no-else-return */
+/* eslint-disable no-var, func-names, object-shorthand, one-var, prefer-arrow-callback, prefer-template, no-else-return */
 
 import $ from 'jquery';
 import Api from '~/api';
@@ -10,8 +10,6 @@ function AdminEmailSelect() {
       $('.ajax-admin-email-select').each(
         (function(_this) {
           return function(i, select) {
-            var skip_ldap;
-            skip_ldap = $(select).hasClass('skip_ldap');
             return $(select).select2({
               placeholder: __('Select group or project'),
               multiple: $(select).hasClass('multiselect'),

ee/app/assets/javascripts/weight_select.js

-/* eslint-disable prefer-arrow-callback, one-var, no-var, object-shorthand, no-shadow, no-unused-vars, no-else-return, func-names */
+/* eslint-disable prefer-arrow-callback, one-var, no-var, object-shorthand, no-shadow, no-else-return, func-names */
 
 import $ from 'jquery';
 import '~/gl_dropdown';
@@ -7,23 +7,12 @@ function WeightSelect(els, options = {}) {
   const $els = $(els || '.js-weight-select');
 
   $els.each(function(i, dropdown) {
-    var $block,
-      $dropdown,
-      $loading,
-      $selectbox,
-      $sidebarCollapsedValue,
-      $value,
-      abilityName,
-      updateUrl,
-      updateWeight;
+    var $block, $dropdown, $selectbox, $value;
     $dropdown = $(dropdown);
-    updateUrl = $dropdown.data('issueUpdate');
     $selectbox = $dropdown.closest('.selectbox');
     $block = $selectbox.closest('.block');
-    $sidebarCollapsedValue = $block.find('.sidebar-collapsed-icon span');
     $value = $block.find('.value');
-    abilityName = $dropdown.data('abilityName');
-    $loading = $block.find('.block-loading').fadeOut();
+    $block.find('.block-loading').fadeOut();
     const fieldName = options.fieldName || $dropdown.data('fieldName');
     const inputField = $dropdown.closest('.selectbox').find(`input[name='${fieldName}']`);
 
@@ -37,7 +26,7 @@ function WeightSelect(els, options = {}) {
       toggleLabel: function(selected, el) {
         return $(el).data('id');
       },
-      hidden: function(e) {
+      hidden: function() {
         $selectbox.hide();
         return $value.css('display', '');
       },

spec/javascripts/boards/boards_store_spec.js

-/* eslint-disable no-unused-vars */
 /* global ListIssue */
 
-import Vue from 'vue';
 import MockAdapter from 'axios-mock-adapter';
 import axios from '~/lib/utils/axios_utils';
 import Cookies from 'js-cookie';
@@ -190,7 +188,7 @@ describe('Store', () => {
 
     it('moves the position of lists', () => {
       const listOne = boardsStore.addList(listObj);
-      const listTwo = boardsStore.addList(listObjDuplicate);
+      boardsStore.addList(listObjDuplicate);
 
       expect(boardsStore.state.lists.length).toBe(2);