Fix JS intialization on commit page

When commit diffs are loaded async, we only delay JS initialization
of the diff. The other JS initialization do not depend on the diffs
to be present.

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

@@ -18,20 +18,18 @@ import { __ } from '~/locale';
 document.addEventListener('DOMContentLoaded', () => {
   const hasPerfBar = document.querySelector('.with-performance-bar');
   const performanceHeight = hasPerfBar ? 35 : 0;
+  initChangesDropdown(document.querySelector('.navbar-gitlab').offsetHeight + performanceHeight);
+  new ZenMode();
+  new ShortcutsNavigation();
+  new MiniPipelineGraph({
+    container: '.js-commit-pipeline-graph',
+  }).bindEvents();
+  initNotes();
+  // eslint-disable-next-line no-jquery/no-load
+  $('.commit-info.branches').load(document.querySelector('.js-commit-box').dataset.commitPath);
+  fetchCommitMergeRequests();
+
   const filesContainer = $('.js-diffs-batch');
-  const initAfterPageLoad = () => {
-    new Diff();
-    new ZenMode();
-    new ShortcutsNavigation();
-    new MiniPipelineGraph({
-      container: '.js-commit-pipeline-graph',
-    }).bindEvents();
-    initNotes();
-    initChangesDropdown(document.querySelector('.navbar-gitlab').offsetHeight + performanceHeight);
-    // eslint-disable-next-line no-jquery/no-load
-    $('.commit-info.branches').load(document.querySelector('.js-commit-box').dataset.commitPath);
-    fetchCommitMergeRequests();
-  };
 
   if (filesContainer.length) {
     const batchPath = filesContainer.data('diffFilesPath');
@@ -42,12 +40,12 @@ document.addEventListener('DOMContentLoaded', () => {
         filesContainer.html($(data.html));
         syntaxHighlight(filesContainer);
         handleLocationHash();
-        initAfterPageLoad();
+        new Diff();
       })
       .catch(() => {
         flash(__('An error occurred while retrieving diff files'));
       });
   } else {
-    initAfterPageLoad();
+    new Diff();
   }
 });

spec/features/projects/commit/mini_pipeline_graph_spec.rb

@@ -26,8 +26,6 @@ RSpec.describe 'Mini Pipeline Graph in Commit View', :js do
       build.run
       visit project_commit_path(project, project.commit.id)
 
-      wait_for_all_requests
-
       expect(page).to have_selector('.mr-widget-pipeline-graph')
 
       first('.mini-pipeline-graph-dropdown-toggle').click