fix: ember-source broken links

app/helpers/github-link.js

@@ -2,10 +2,21 @@ import { helper } from '@ember/component/helper';
 import githubMap, { mainDir } from '../utils/github-map';
 
 export function githubLink([project, version, file, line], { isEdit = false }) {
+  const isEmberProject = project === 'ember';
+  const majorVersion = parseInt(version?.split('.')[0].replace('v', ''), 10);
+
+  const baseVersion = `v${version.replace(/^v/, '')}`;
+
+  // Check if the project is 'ember' and adjust the tag only if the major version is >= 6 to match the Git tags
+  const adjustedVersion =
+    isEmberProject && majorVersion >= 6
+      ? `${baseVersion}-ember-source`
+      : baseVersion;
+
   if (isEdit) {
     return `https://github.com/${githubMap[project]}/edit/release${mainDir(
       project,
-      version
+      adjustedVersion
     )}${file}#L${line}`;
   }
 
@@ -22,9 +33,11 @@ export function githubLink([project, version, file, line], { isEdit = false }) {
   // 'https://github.com/emberjs/data/tree/v4.10.0/packages/packages/store/addon/-private/record-arrays/identifier-array.ts#L118'
   const fixedFile = file?.replace('../packages/', '../');
 
-  return `https://github.com/${githubMap[project]}/tree/v${version}${mainDir(
+  return `https://github.com/${
+    githubMap[project]
+  }/tree/${adjustedVersion}${mainDir(
     project,
-    version
+    adjustedVersion
   )}${fixedFile}#L${line}`;
 }
 

tests/unit/helpers/github-link-test.js

@@ -13,6 +13,17 @@ module('Unit | Helper | github link', function () {
     );
   });
 
+  test('should append "ember-source" to the version for git tags v6 and above', function (assert) {
+    let result = githubLink(
+      ['ember', '6.0.0', 'ember-glimmer/lib/component.js', '35'],
+      {}
+    );
+    assert.equal(
+      result,
+      'https://github.com/emberjs/ember.js/tree/v6.0.0-ember-source/ember-glimmer/lib/component.js#L35'
+    );
+  });
+
   test('should render a github link for ember-data from file info', function (assert) {
     let result = githubLink(
       ['ember-data', '2.10.0', 'addon/-private/adapters/errors.js', '10'],