fix(nextjs): Don't drop transactions for server components on navigations (#13980)

We were dropping a few too many transactions.

Author: Luca Forstner

dev-packages/e2e-tests/test-applications/nextjs-app-dir/app/layout.tsx

@@ -9,33 +9,49 @@ export default function Layout({ children }: { children: React.ReactNode }) {
           <h1>Layout (/)</h1>
           <ul>
             <li>
-              <Link href="/">/</Link>
+              <Link href="/" prefetch={false}>
+                /
+              </Link>
             </li>
             <li>
-              <Link href="/client-component">/client-component</Link>
+              <Link href="/client-component" prefetch={false}>
+                /client-component
+              </Link>
             </li>
             <li>
-              <Link href="/client-component/parameter/42">/client-component/parameter/42</Link>
+              <Link href="/client-component/parameter/42" prefetch={false}>
+                /client-component/parameter/42
+              </Link>
             </li>
             <li>
-              <Link href="/client-component/parameter/foo/bar/baz">/client-component/parameter/foo/bar/baz</Link>
+              <Link href="/client-component/parameter/foo/bar/baz" prefetch={false}>
+                /client-component/parameter/foo/bar/baz
+              </Link>
             </li>
             <li>
-              <Link href="/server-component">/server-component</Link>
+              <Link href="/server-component" prefetch={false}>
+                /server-component
+              </Link>
             </li>
             <li>
-              <Link href="/server-component/parameter/42">/server-component/parameter/42</Link>
+              <Link href="/server-component/parameter/42" prefetch={false}>
+                /server-component/parameter/42
+              </Link>
             </li>
             <li>
               <Link href="/server-component/parameter/foo/bar/baz" prefetch={false}>
                 /server-component/parameter/foo/bar/baz
               </Link>
             </li>
             <li>
-              <Link href="/not-found">/not-found</Link>
+              <Link href="/not-found" prefetch={false}>
+                /not-found
+              </Link>
             </li>
             <li>
-              <Link href="/redirect">/redirect</Link>
+              <Link href="/redirect" prefetch={false}>
+                /redirect
+              </Link>
             </li>
           </ul>
           <SpanContextProvider>{children}</SpanContextProvider>

dev-packages/e2e-tests/test-applications/nextjs-app-dir/tests/edge-route.test.ts

@@ -4,7 +4,9 @@ import { waitForError, waitForTransaction } from '@sentry-internal/test-utils';
 test('Should create a transaction for edge routes', async ({ request }) => {
   const edgerouteTransactionPromise = waitForTransaction('nextjs-app-dir', async transactionEvent => {
     return (
-      transactionEvent?.transaction === 'GET /api/edge-endpoint' && transactionEvent?.contexts?.trace?.status === 'ok'
+      transactionEvent?.transaction === 'GET /api/edge-endpoint' &&
+      transactionEvent?.contexts?.trace?.status === 'ok' &&
+      transactionEvent.contexts?.runtime?.name === 'vercel-edge'
     );
   });
 
@@ -19,7 +21,6 @@ test('Should create a transaction for edge routes', async ({ request }) => {
 
   expect(edgerouteTransaction.contexts?.trace?.status).toBe('ok');
   expect(edgerouteTransaction.contexts?.trace?.op).toBe('http.server');
-  expect(edgerouteTransaction.contexts?.runtime?.name).toBe('vercel-edge');
   expect(edgerouteTransaction.request?.headers?.['x-yeet']).toBe('test-value');
 });
 

packages/nextjs/src/server/index.ts

@@ -307,12 +307,6 @@ export function init(options: NodeOptions): NodeClient | undefined {
           if (typeof method === 'string' && typeof route === 'string') {
             event.transaction = `${method} ${route.replace(/\/route$/, '')}`;
             event.contexts.trace.data[SEMANTIC_ATTRIBUTE_SENTRY_SOURCE] = 'route';
-          } else {
-            // If we cannot hoist the route (or rather parameterize the transaction) for BaseServer.handleRequest spans,
-            // we drop it because the chance that it is a low-quality transaction we don't want is pretty high.
-            // This is important in the case of edge-runtime where Next.js will also create unnecessary Node.js root
-            // spans, that are not parameterized.
-            return null;
           }
         }