Remove issuableContext from global namespace

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

 /* eslint-disable comma-dangle, space-before-function-paren, no-new */
-/* global IssuableContext */
+import IssuableContext from '../../issuable_context';
 /* global MilestoneSelect */
 /* global LabelsSelect */
 /* global Sidebar */

app/assets/javascripts/init_issuable_sidebar.js

 /* eslint-disable no-new */
 /* global MilestoneSelect */
 /* global LabelsSelect */
-/* global IssuableContext */
+import IssuableContext from './issuable_context';
 /* global Sidebar */
 import DueDateSelectors from './due_date_select';

app/assets/javascripts/issuable_context.js

-/* eslint-disable func-names, space-before-function-paren, wrap-iife, no-new, comma-dangle, quotes, prefer-arrow-callback, consistent-return, one-var, no-var, one-var-declaration-per-line, no-underscore-dangle, max-len */
 import Cookies from 'js-cookie';
 import bp from './breakpoints';
 import UsersSelect from './users_select';
 const PARTICIPANTS_ROW_COUNT = 7;
-(function() {
-  this.IssuableContext = (function() {
-    function IssuableContext(currentUser) {
-      this.initParticipants();
-      new UsersSelect(currentUser);
-      $('select.select2').select2({
-        width: 'resolve',
-        dropdownAutoWidth: true
-      });
-      $(".issuable-sidebar .inline-update").on("change", "select", function() {
-        return $(this).submit();
-      });
-      $(".issuable-sidebar .inline-update").on("change", ".js-assignee", function() {
-        return $(this).submit();
-      });
-      $(document).off('click', '.issuable-sidebar .dropdown-content a').on('click', '.issuable-sidebar .dropdown-content a', function(e) {
-        return e.preventDefault();
-      });
-      $(document).off('click', '.edit-link').on('click', '.edit-link', function(e) {
-        var $block, $selectbox;
+export default class IssuableContext {
+  constructor(currentUser) {
+    this.initParticipants();
+    this.userSelect = new UsersSelect(currentUser);
+
+    $('select.select2').select2({
+      width: 'resolve',
+      dropdownAutoWidth: true,
+    });
+
+    $('.issuable-sidebar .inline-update').on('change', 'select', function onClickSelect() {
+      return $(this).submit();
+    });
+    $('.issuable-sidebar .inline-update').on('change', '.js-assignee', function onClickAssignee() {
+      return $(this).submit();
+    });
+    $(document)
+      .off('click', '.issuable-sidebar .dropdown-content a')
+      .on('click', '.issuable-sidebar .dropdown-content a', e => e.preventDefault());
+
+    $(document)
+      .off('click', '.edit-link')
+      .on('click', '.edit-link', function onClickEdit(e) {
         e.preventDefault();
-        $block = $(this).parents('.block');
-        $selectbox = $block.find('.selectbox');
+        const $block = $(this).parents('.block');
+        const $selectbox = $block.find('.selectbox');
         if ($selectbox.is(':visible')) {
           $selectbox.hide();
           $block.find('.value').show();
@@ -35,46 +37,43 @@ const PARTICIPANTS_ROW_COUNT = 7;
           $selectbox.show();
           $block.find('.value').hide();
         }
+
         if ($selectbox.is(':visible')) {
-          return setTimeout(function() {
-            return $block.find('.dropdown-menu-toggle').trigger('click');
-          }, 0);
+          setTimeout(() => $block.find('.dropdown-menu-toggle').trigger('click'), 0);
         }
       });
-      window.addEventListener('beforeunload', function() {
-        // collapsed_gutter cookie hides the sidebar
-        var bpBreakpoint = bp.getBreakpointSize();
-        if (bpBreakpoint === 'xs' || bpBreakpoint === 'sm') {
-          Cookies.set('collapsed_gutter', true);
-        }
-      });
-    }
-    IssuableContext.prototype.initParticipants = function() {
-      $(document).on('click', '.js-participants-more', this.toggleHiddenParticipants);
-      return $('.js-participants-author').each(function(i) {
-        if (i >= PARTICIPANTS_ROW_COUNT) {
-          return $(this).addClass('js-participants-hidden').hide();
-        }
-      });
-    };
-    IssuableContext.prototype.toggleHiddenParticipants = function() {
-      const currentText = $(this).text().trim();
-      const lessText = $(this).data('less-text');
-      const originalText = $(this).data('original-text');
-      if (currentText === originalText) {
-        $(this).text(lessText);
-        if (gl.lazyLoader) gl.lazyLoader.loadCheck();
-      } else {
-        $(this).text(originalText);
-      }
-      $('.js-participants-hidden').toggle();
-    };
-    return IssuableContext;
-  })();
-}).call(window);
+    window.addEventListener('beforeunload', () => {
+      // collapsed_gutter cookie hides the sidebar
+      const bpBreakpoint = bp.getBreakpointSize();
+      if (bpBreakpoint === 'xs' || bpBreakpoint === 'sm') {
+        Cookies.set('collapsed_gutter', true);
+      }
+    });
+  }
+  initParticipants() {
+    $(document).on('click', '.js-participants-more', this.toggleHiddenParticipants);
+    return $('.js-participants-author').each(function forEachAuthor(i) {
+      if (i >= PARTICIPANTS_ROW_COUNT) {
+        $(this).addClass('js-participants-hidden').hide();
+      }
+    });
+  }
+  toggleHiddenParticipants() {
+    const currentText = $(this).text().trim();
+    const lessText = $(this).data('less-text');
+    const originalText = $(this).data('original-text');
+    if (currentText === originalText) {
+      $(this).text(lessText);
+      if (gl.lazyLoader) gl.lazyLoader.loadCheck();
+    } else {
+      $(this).text(originalText);
+    }
+    $('.js-participants-hidden').toggle();
+  }
+}

app/assets/javascripts/main.js

@@ -58,8 +58,6 @@ import './gl_form';
 import './groups_select';
 import './header';
 import initImporterStatus from './importer_status';
-import './issuable_index';
-import './issuable_context';
 import './issuable_form';
 import './issue';
 import './issue_status_select';

spec/javascripts/issuable_context_spec.js

-/* global IssuableContext */
-import '~/issuable_context';
 import $ from 'jquery';
+import IssuableContext from '~/issuable_context';
 describe('IssuableContext', () => {
   describe('toggleHiddenParticipants', () => {

spec/javascripts/labels_issue_sidebar_spec.js

 /* eslint-disable no-new */
-/* global IssuableContext */
+import IssuableContext from '~/issuable_context';
 /* global LabelsSelect */
 import '~/gl_dropdown';