Refactor wildcard dispatcher imports

app/assets/javascripts/dispatcher.js

@@ -6,43 +6,21 @@ import GlFieldErrors from './gl_field_errors';
 import Shortcuts from './shortcuts';
 import SearchAutocomplete from './search_autocomplete';
 
-var Dispatcher;
-
-(function() {
-  Dispatcher = (function() {
-    function Dispatcher() {
-      this.initSearch();
-      this.initFieldErrors();
-      this.initPageScripts();
-    }
-
-    Dispatcher.prototype.initPageScripts = function() {
-      var path, shortcut_handler;
-      const page = $('body').attr('data-page');
-      if (!page) {
-        return false;
+function initSearch() {
+  // Only when search form is present
+  if ($('.search').length) {
+    return new SearchAutocomplete();
   }
+}
 
-      const fail = () => Flash('Error loading dynamic module');
-      const callDefault = m => m.default();
-
-      path = page.split(':');
-      shortcut_handler = null;
-
-      $('.js-gfm-input:not(.js-vue-textarea)').each((i, el) => {
-        const gfm = new GfmAutoComplete(gl.GfmAutoComplete && gl.GfmAutoComplete.dataSources);
-        const enableGFM = convertPermissionToBoolean(el.dataset.supportsAutocomplete);
-        gfm.setup($(el), {
-          emojis: true,
-          members: enableGFM,
-          issues: enableGFM,
-          milestones: enableGFM,
-          mergeRequests: enableGFM,
-          labels: enableGFM,
-        });
+function initFieldErrors() {
+  $('.gl-show-field-errors').each((i, form) => {
+    new GlFieldErrors(form);
   });
+}
 
-      const shortcutHandlerPages = [
+function initPageShortcuts(page) {
+  const pagesWithCustomShortcuts = [
     'projects:activity',
     'projects:artifacts:browse',
     'projects:artifacts:file',
@@ -66,117 +44,42 @@ var Dispatcher;
     'groups:show',
   ];
 
-      if (shortcutHandlerPages.indexOf(page) !== -1) {
-        shortcut_handler = true;
-      }
-
-      switch (path[0]) {
-        case 'admin':
-          switch (path[1]) {
-            case 'broadcast_messages':
-              import('./pages/admin/broadcast_messages')
-                .then(callDefault)
-                .catch(fail);
-              break;
-            case 'cohorts':
-              import('./pages/admin/cohorts')
-                .then(callDefault)
-                .catch(fail);
-              break;
-            case 'groups':
-              switch (path[2]) {
-                case 'show':
-                  import('./pages/admin/groups/show')
-                    .then(callDefault)
-                    .catch(fail);
-                  break;
-              }
-              break;
-            case 'projects':
-              import('./pages/admin/projects')
-                .then(callDefault)
-                .catch(fail);
-              break;
-            case 'labels':
-              switch (path[2]) {
-                case 'new':
-                  import('./pages/admin/labels/new')
-                    .then(callDefault)
-                    .catch(fail);
-                  break;
-                case 'edit':
-                  import('./pages/admin/labels/edit')
-                    .then(callDefault)
-                    .catch(fail);
-                  break;
-              }
-            case 'abuse_reports':
-              import('./pages/admin/abuse_reports')
-                .then(callDefault)
-                .catch(fail);
-              break;
-          }
-          break;
-        case 'profiles':
-          import('./pages/profiles/index')
-            .then(callDefault)
-            .catch(fail);
-          break;
-        case 'projects':
-          import('./pages/projects')
-            .then(callDefault)
-            .catch(fail);
-          shortcut_handler = true;
-          switch (path[1]) {
-            case 'compare':
-              import('./pages/projects/compare')
-                .then(callDefault)
-                .catch(fail);
-              break;
-            case 'create':
-            case 'new':
-              import('./pages/projects/new')
-                .then(callDefault)
-                .catch(fail);
-              break;
-            case 'wikis':
-              import('./pages/projects/wikis')
-                .then(callDefault)
-                .catch(fail);
-              shortcut_handler = true;
-              break;
-          }
-          break;
-      }
-      // If we haven't installed a custom shortcut handler, install the default one
-      if (!shortcut_handler) {
+  if (pagesWithCustomShortcuts.indexOf(page) === -1) {
     new Shortcuts();
   }
+}
 
+function initGFMInput() {
+  $('.js-gfm-input:not(.js-vue-textarea)').each((i, el) => {
+    const gfm = new GfmAutoComplete(gl.GfmAutoComplete && gl.GfmAutoComplete.dataSources);
+    const enableGFM = convertPermissionToBoolean(el.dataset.supportsAutocomplete);
+    gfm.setup($(el), {
+      emojis: true,
+      members: enableGFM,
+      issues: enableGFM,
+      milestones: enableGFM,
+      mergeRequests: enableGFM,
+      labels: enableGFM,
+    });
+  });
+}
+
+function initPerformanceBar() {
   if (document.querySelector('#peek')) {
     import('./performance_bar')
       .then(m => new m.default({ container: '#peek' })) // eslint-disable-line new-cap
-          .catch(fail);
+      .catch(() => Flash('Error loading performance bar module'));
   }
-    };
-
-    Dispatcher.prototype.initSearch = function() {
-      // Only when search form is present
-      if ($('.search').length) {
-        return new SearchAutocomplete();
-      }
-    };
-
-    Dispatcher.prototype.initFieldErrors = function() {
-      $('.gl-show-field-errors').each((i, form) => {
-        new GlFieldErrors(form);
-      });
-    };
+}
 
-    return Dispatcher;
-  })();
-})();
+export default () => {
+  initSearch();
+  initFieldErrors();
 
-export default function initDispatcher() {
-  return new Dispatcher();
-}
+  const page = $('body').attr('data-page');
+  if (page) {
+    initPageShortcuts(page);
+    initGFMInput();
+    initPerformanceBar();
+  }
+};

app/assets/javascripts/pages/admin/abuse_reports/index.js

 import AbuseReports from './abuse_reports';
 
-export default () => new AbuseReports();
+document.addEventListener('DOMContentLoaded', () => new AbuseReports());

app/assets/javascripts/pages/admin/broadcast_messages/broadcast_message.js

@@ -3,7 +3,7 @@ import axios from '~/lib/utils/axios_utils';
 import flash from '~/flash';
 import { __ } from '~/locale';
 
-export default function initBroadcastMessagesForm() {
+export default () => {
   $('input#broadcast_message_color').on('input', function onMessageColorInput() {
     const previewColor = $(this).val();
     $('div.broadcast-message-preview').css('background-color', previewColor);
@@ -32,4 +32,4 @@ export default function initBroadcastMessagesForm() {
       .catch(() => flash(__('An error occurred while rendering preview broadcast message')));
     }
   }, 250));
-}
+};

app/assets/javascripts/pages/admin/broadcast_messages/index.js

 import initBroadcastMessagesForm from './broadcast_message';
 
-export default () => initBroadcastMessagesForm();
+document.addEventListener('DOMContentLoaded', initBroadcastMessagesForm);

app/assets/javascripts/pages/admin/cohorts/index.js

 import initUsagePing from './usage_ping';
 
-export default () => initUsagePing();
+document.addEventListener('DOMContentLoaded', initUsagePing);

app/assets/javascripts/pages/admin/groups/show/index.js

 import UsersSelect from '../../../../users_select';
 
-export default () => new UsersSelect();
+document.addEventListener('DOMContentLoaded', () => new UsersSelect());

app/assets/javascripts/pages/admin/labels/edit/index.js

 import Labels from '../../../../labels';
 
-export default () => new Labels();
+document.addEventListener('DOMContentLoaded', () => new Labels());

app/assets/javascripts/pages/admin/labels/new/index.js

 import Labels from '../../../../labels';
 
-export default () => new Labels();
+document.addEventListener('DOMContentLoaded', () => new Labels());

app/assets/javascripts/pages/admin/projects/index.js

 import ProjectsList from '../../../projects_list';
 import NamespaceSelect from '../../../namespace_select';
 
-export default () => {
+document.addEventListener('DOMContentLoaded', () => {
   new ProjectsList(); // eslint-disable-line no-new
 
   document.querySelectorAll('.js-namespace-select')
     .forEach(dropdown => new NamespaceSelect({ dropdown }));
-};
+});

app/assets/javascripts/pages/profiles/index/index.js

 import NotificationsForm from '../../../notifications_form';
 import notificationsDropdown from '../../../notifications_dropdown';
 
-export default () => {
+document.addEventListener('DOMContentLoaded', () => {
   new NotificationsForm(); // eslint-disable-line no-new
   notificationsDropdown();
-};
+});

app/assets/javascripts/pages/projects/compare/index.js

 import initCompareAutocomplete from '~/compare_autocomplete';
 
-export default () => {
-  initCompareAutocomplete();
-};
+document.addEventListener('DOMContentLoaded', initCompareAutocomplete);

app/assets/javascripts/pages/projects/index.js

 import Project from './project';
 import ShortcutsNavigation from '../../shortcuts_navigation';
 
-export default () => {
+document.addEventListener('DOMContentLoaded', () => {
   new Project(); // eslint-disable-line no-new
   new ShortcutsNavigation(); // eslint-disable-line no-new
-};
+});

app/assets/javascripts/pages/projects/new/index.js

@@ -2,8 +2,8 @@ import ProjectNew from '../shared/project_new';
 import initProjectVisibilitySelector from '../../../project_visibility';
 import initProjectNew from '../../../projects/project_new';
 
-export default () => {
+document.addEventListener('DOMContentLoaded', () => {
   new ProjectNew(); // eslint-disable-line no-new
   initProjectVisibilitySelector();
   initProjectNew.bindEvents();
-};
+});

app/assets/javascripts/pages/projects/wikis/index.js

@@ -3,9 +3,9 @@ import ShortcutsWiki from '../../../shortcuts_wiki';
 import ZenMode from '../../../zen_mode';
 import GLForm from '../../../gl_form';
 
-export default () => {
+document.addEventListener('DOMContentLoaded', () => {
   new Wikis(); // eslint-disable-line no-new
   new ShortcutsWiki(); // eslint-disable-line no-new
   new ZenMode(); // eslint-disable-line no-new
   new GLForm($('.wiki-form'), true); // eslint-disable-line no-new
-};
+});

config/webpack.config.js

@@ -25,16 +25,10 @@ var NO_COMPRESSION = process.env.NO_COMPRESSION;
 var autoEntries = {};
 var pageEntries = glob.sync('pages/**/index.js', { cwd: path.join(ROOT_PATH, 'app/assets/javascripts') });
 
-// filter out entries currently imported dynamically in dispatcher.js
-var dispatcher = fs.readFileSync(path.join(ROOT_PATH, 'app/assets/javascripts/dispatcher.js')).toString();
-var dispatcherChunks = dispatcher.match(/(?!import\(')\.\/pages\/[^']+/g);
-
 function generateAutoEntries(path, prefix = '.') {
   const chunkPath = path.replace(/\/index\.js$/, '');
-  if (!dispatcherChunks.includes(`${prefix}/${chunkPath}`)) {
   const chunkName = chunkPath.replace(/\//g, '.');
   autoEntries[chunkName] = `${prefix}/${path}`;
-  }
 }
 
 pageEntries.forEach(( path ) => generateAutoEntries(path));