sarkas100
diff --git a/‎__tests__/utils.test.ts
Copy file name to clipboardExpand all lines: __tests__/utils.test.ts
+39Lines changed: 39 additions & 0 deletions b/‎__tests__/utils.test.ts
Copy file name to clipboardExpand all lines: __tests__/utils.test.ts
+39Lines changed: 39 additions & 0 deletions
diff --git a/‎dist/setup/index.js
Copy file name to clipboardExpand all lines: dist/setup/index.js
+5-1Lines changed: 5 additions & 1 deletion b/‎dist/setup/index.js
Copy file name to clipboardExpand all lines: dist/setup/index.js
+5-1Lines changed: 5 additions & 1 deletion
diff --git a/‎src/utils.ts
Copy file name to clipboardExpand all lines: src/utils.ts
+7-1Lines changed: 7 additions & 1 deletion b/‎src/utils.ts
Copy file name to clipboardExpand all lines: src/utils.ts
+7-1Lines changed: 7 additions & 1 deletion
@@ -13,6 +13,7 @@ import {
   getVersionInputFromPlainFile,
   getVersionInputFromTomlFile,
   getNextPageUrl,
+  isGhes,
   IS_WINDOWS,
   getDownloadFileName
 } from '../src/utils';
@@ -195,3 +196,41 @@ describe('getDownloadFileName', () => {
     }
   });
 });
+
+describe('isGhes', () => {
+  const pristineEnv = process.env;
+
+  beforeEach(() => {
+    jest.resetModules();
+    process.env = {...pristineEnv};
+  });
+
+  afterAll(() => {
+    process.env = pristineEnv;
+  });
+
+  it('returns false when the GITHUB_SERVER_URL environment variable is not defined', async () => {
+    delete process.env['GITHUB_SERVER_URL'];
+    expect(isGhes()).toBeFalsy();
+  });
+
+  it('returns false when the GITHUB_SERVER_URL environment variable is set to github.com', async () => {
+    process.env['GITHUB_SERVER_URL'] = 'https://github.com';
+    expect(isGhes()).toBeFalsy();
+  });
+
+  it('returns false when the GITHUB_SERVER_URL environment variable is set to a GitHub Enterprise Cloud-style URL', async () => {
+    process.env['GITHUB_SERVER_URL'] = 'https://contoso.ghe.com';
+    expect(isGhes()).toBeFalsy();
+  });
+
+  it('returns false when the GITHUB_SERVER_URL environment variable has a .localhost suffix', async () => {
+    process.env['GITHUB_SERVER_URL'] = 'https://mock-github.localhost';
+    expect(isGhes()).toBeFalsy();
+  });
+
+  it('returns true when the GITHUB_SERVER_URL environment variable is set to some other URL', async () => {
+    process.env['GITHUB_SERVER_URL'] = 'https://src.onpremise.fabrikam.com';
+    expect(isGhes()).toBeTruthy();
+  });
+});
@@ -92017,7 +92017,11 @@ function validatePythonVersionFormatForPyPy(version) {
 exports.validatePythonVersionFormatForPyPy = validatePythonVersionFormatForPyPy;
 function isGhes() {
     const ghUrl = new URL(process.env['GITHUB_SERVER_URL'] || 'https://github.com');
-    return ghUrl.hostname.toUpperCase() !== 'GITHUB.COM';
+    const hostname = ghUrl.hostname.trimEnd().toUpperCase();
+    const isGitHubHost = hostname === 'GITHUB.COM';
+    const isGitHubEnterpriseCloudHost = hostname.endsWith('.GHE.COM');
+    const isLocalHost = hostname.endsWith('.LOCALHOST');
+    return !isGitHubHost && !isGitHubEnterpriseCloudHost && !isLocalHost;
 }
 exports.isGhes = isGhes;
 function isCacheFeatureAvailable() {
 
@@ -116,7 +116,13 @@ export function isGhes(): boolean {
   const ghUrl = new URL(
     process.env['GITHUB_SERVER_URL'] || 'https://github.com'
   );
-  return ghUrl.hostname.toUpperCase() !== 'GITHUB.COM';
+
+  const hostname = ghUrl.hostname.trimEnd().toUpperCase();
+  const isGitHubHost = hostname === 'GITHUB.COM';
+  const isGitHubEnterpriseCloudHost = hostname.endsWith('.GHE.COM');
+  const isLocalHost = hostname.endsWith('.LOCALHOST');
+
+  return !isGitHubHost && !isGitHubEnterpriseCloudHost && !isLocalHost;
 }
 
 export function isCacheFeatureAvailable(): boolean {