ref(node): Avoid double wrapping http module for vercel on Node

dev-packages/node-integration-tests/suites/vercel/instrument-withoutSpans.mjs

@@ -0,0 +1,17 @@
+import * as Sentry from '@sentry/node';
+import { loggingTransport } from '@sentry-internal/node-integration-tests';
+
+process.env.VERCEL = 'true';
+
+Sentry.init({
+  dsn: 'https://public@dsn.ingest.sentry.io/1337',
+  release: '1.0',
+  transport: loggingTransport,
+  // We look at debug logs in this test
+  debug: true,
+  integrations: [
+    Sentry.httpIntegration({
+      spans: false,
+    }),
+  ],
+});

dev-packages/node-integration-tests/suites/vercel/scenario-withoutSpans.mjs

@@ -0,0 +1,13 @@
+import * as Sentry from '@sentry/node';
+import { startExpressServerAndSendPortToRunner } from '@sentry-internal/node-integration-tests';
+import express from 'express';
+
+const app = express();
+
+app.get('/test/error', () => {
+  throw new Error('test error');
+});
+
+Sentry.setupExpressErrorHandler(app);
+
+startExpressServerAndSendPortToRunner(app);

dev-packages/node-integration-tests/suites/vercel/scenario.mjs

@@ -8,6 +8,10 @@ app.get('/test/express', (_req, res) => {
   res.send({ response: 'response 1' });
 });
 
+app.get('/test/error', () => {
+  throw new Error('test error');
+});
+
 Sentry.setupExpressErrorHandler(app);
 
 startExpressServerAndSendPortToRunner(app);

dev-packages/node-integration-tests/suites/vercel/test.ts

@@ -1,13 +1,13 @@
 import { afterAll, describe, expect } from 'vitest';
 import { cleanupChildProcesses, createEsmAndCjsTests } from '../../utils/runner';
 
-describe('vercel xxx', () => {
+describe('vercel', () => {
   afterAll(() => {
     cleanupChildProcesses();
   });
 
   createEsmAndCjsTests(__dirname, 'scenario.mjs', 'instrument.mjs', (createRunner, test) => {
-    test('should flush events correctly on Vercel', async () => {
+    test('should flush spans correctly on Vercel', async () => {
       const runner = createRunner()
         .expect({
           transaction: {
@@ -47,7 +47,134 @@ describe('vercel xxx', () => {
         }
       }
 
-      expect(expectedLogs).toEqual([]);
+      if (expectedLogs.length > 0) {
+        // eslint-disable-next-line no-console
+        console.log(actualLogs);
+        expect(expectedLogs).toEqual([]);
+      }
+    });
+
+    test('should flush errors correctly on Vercel', async () => {
+      const runner = createRunner()
+        .expect({
+          transaction: {
+            transaction: 'GET /test/error',
+          },
+        })
+        .expect({
+          event: {
+            transaction: 'GET /test/error',
+            exception: {
+              values: [
+                {
+                  value: 'test error',
+                },
+              ],
+            },
+          },
+        })
+        .start();
+      runner.makeRequest('get', '/test/error', { expectError: true });
+      await runner.completed();
+
+      const actualLogs = runner.getLogs();
+
+      // We want to test that the following logs are present in this order
+      // other logs may be in between
+      const expectedLogs = [
+        'Sentry Logger [log]: @sentry/instrumentation-http Patching server.emit',
+        'Sentry Logger [log]: @sentry/instrumentation-http Handling incoming request',
+        'Sentry Logger [log]: @sentry/instrumentation-http Patching request.on',
+        'Sentry Logger [debug]: @opentelemetry_sentry-patched/instrumentation-http http instrumentation incomingRequest',
+        'Sentry Logger [log]: [Tracing] Starting sampled root span',
+        // later...
+        'Sentry Logger [log]: Patching response to flush on Vercel',
+        'Sentry Logger [log]: Patching res.end()',
+        // later...
+        'Sentry Logger [log]: Captured error event `test error`',
+        // later...
+        'Sentry Logger [log]: Flushing events before Vercel Lambda freeze',
+        'Sentry Logger [log]: SpanExporter exported 4 spans, 0 spans are waiting for their parent spans to finish',
+      ];
+
+      // Test that the order of logs is correct
+      for (const log of actualLogs) {
+        if (expectedLogs.length === 0) {
+          break;
+        }
+
+        if (log === expectedLogs[0]) {
+          expectedLogs.shift();
+        }
+      }
+
+      if (expectedLogs.length > 0) {
+        // eslint-disable-next-line no-console
+        console.log(actualLogs);
+        expect(expectedLogs).toEqual([]);
+      }
     });
   });
+
+  describe('without http.server spans', () => {
+    createEsmAndCjsTests(
+      __dirname,
+      'scenario-withoutSpans.mjs',
+      'instrument-withoutSpans.mjs',
+      (createRunner, test) => {
+        test('should flush errors correctly on Vercel even without HTTP span instrumentation', async () => {
+          const runner = createRunner()
+            .expect({
+              event: {
+                transaction: 'GET /test/error',
+                exception: {
+                  values: [
+                    {
+                      value: 'test error',
+                    },
+                  ],
+                },
+              },
+            })
+            .start();
+          runner.makeRequest('get', '/test/error', { expectError: true });
+          await runner.completed();
+
+          const actualLogs = runner.getLogs();
+
+          // We want to test that the following logs are present in this order
+          // other logs may be in between
+          const expectedLogs = [
+            'Sentry Logger [log]: @sentry/instrumentation-http Patching server.emit',
+            'Sentry Logger [log]: Patching response to flush on Vercel',
+            'Sentry Logger [log]: Patching res.end()',
+            'Sentry Logger [log]: @sentry/instrumentation-http Handling incoming request',
+            'Sentry Logger [log]: @sentry/instrumentation-http Patching request.on',
+            // later...
+            'Sentry Logger [log]: Captured error event `test error`',
+            // later...
+            'Sentry Logger [log]: Flushing events before Vercel Lambda freeze',
+            'Sentry Logger [log]: SpanExporter exported 0 spans, 0 spans are waiting for their parent spans to finish',
+          ];
+
+          // Test that the order of logs is correct
+          for (const log of actualLogs) {
+            if (expectedLogs.length === 0) {
+              break;
+            }
+
+            if (log === expectedLogs[0]) {
+              expectedLogs.shift();
+            }
+          }
+
+          if (expectedLogs.length > 0) {
+            // eslint-disable-next-line no-console
+            console.log(actualLogs);
+            expect(expectedLogs).toEqual([]);
+          }
+        });
+      },
+    );
+  });
 });