fix(nextjs): Handle async params in url extraction

dev-packages/e2e-tests/test-applications/nextjs-15/.gitignore

@@ -44,3 +44,5 @@ next-env.d.ts
 
 test-results
 event-dumps
+
+.tmp_dev_server_logs

dev-packages/e2e-tests/test-applications/nextjs-15/app/page.tsx

@@ -0,0 +1,3 @@
+export default function Page() {
+  return <p>Next 15 test app</p>;
+}

dev-packages/e2e-tests/test-applications/nextjs-15/package.json

@@ -4,7 +4,7 @@
   "private": true,
   "scripts": {
     "build": "next build > .tmp_build_stdout 2> .tmp_build_stderr || (cat .tmp_build_stdout && cat .tmp_build_stderr && exit 1)",
-    "clean": "npx rimraf node_modules pnpm-lock.yaml",
+    "clean": "npx rimraf node_modules pnpm-lock.yaml .tmp_dev_server_logs",
     "test:prod": "TEST_ENV=production playwright test",
     "test:dev": "TEST_ENV=development playwright test",
     "test:dev-turbo": "TEST_ENV=dev-turbopack playwright test",

dev-packages/e2e-tests/test-applications/nextjs-15/playwright.config.mjs

@@ -7,11 +7,11 @@ if (!testEnv) {
 
 const getStartCommand = () => {
   if (testEnv === 'dev-turbopack') {
-    return 'pnpm next dev -p 3030 --turbopack';
+    return 'pnpm next dev -p 3030 --turbopack 2>&1 | tee .tmp_dev_server_logs';
   }
 
   if (testEnv === 'development') {
-    return 'pnpm next dev -p 3030';
+    return 'pnpm next dev -p 3030 2>&1 | tee .tmp_dev_server_logs';
   }
 
   if (testEnv === 'production') {

dev-packages/e2e-tests/test-applications/nextjs-15/tests/async-params.test.ts

@@ -0,0 +1,16 @@
+import { expect, test } from '@playwright/test';
+import fs from 'fs';
+
+test('should not print warning for async params', async ({ page }) => {
+  test.skip(
+    process.env.TEST_ENV !== 'development' && process.env.TEST_ENV !== 'dev-turbopack',
+    'should be skipped for non-dev mode',
+  );
+  await page.goto('/');
+
+  // If the server exits with code 1, the test will fail (see instrumentation.ts)
+  const devStdout = fs.readFileSync('.tmp_dev_server_logs', 'utf-8');
+  expect(devStdout).not.toContain('`params` should be awaited before using its properties.');
+
+  await expect(page.getByText('Next 15 test app')).toBeVisible();
+});

packages/nextjs/src/common/utils/wrapperUtils.ts

@@ -6,6 +6,7 @@ import {
   getRootSpan,
   getTraceData,
   httpRequestToRequestData,
+  isThenable,
 } from '@sentry/core';
 import type { IncomingMessage, ServerResponse } from 'http';
 import { TRANSACTION_ATTR_SENTRY_ROUTE_BACKFILL } from '../span-attributes-with-logic-attached';
@@ -102,3 +103,31 @@ export async function callDataFetcherTraced<F extends (...args: any[]) => Promis
     throw e;
   }
 }
+
+/**
+ * Extracts the params and searchParams from the props object.
+ *
+ * Depending on the next version, params and searchParams may be a promise which we do not want to resolve in this function.
+ */
+export function maybeExtractSynchronousParamsAndSearchParams(props: unknown): {
+  params: Record<string, string> | undefined;
+  searchParams: Record<string, string> | undefined;
+} {
+  let params =
+    props && typeof props === 'object' && 'params' in props
+      ? (props.params as Record<string, string> | Promise<Record<string, string>> | undefined)
+      : undefined;
+  if (isThenable(params)) {
+    params = undefined;
+  }
+
+  let searchParams =
+    props && typeof props === 'object' && 'searchParams' in props
+      ? (props.searchParams as Record<string, string> | Promise<Record<string, string>> | undefined)
+      : undefined;
+  if (isThenable(searchParams)) {
+    searchParams = undefined;
+  }
+
+  return { params, searchParams };
+}

packages/nextjs/src/common/wrapGenerationFunctionWithSentry.ts

@@ -24,6 +24,7 @@ import { isNotFoundNavigationError, isRedirectNavigationError } from './nextNavi
 import { TRANSACTION_ATTR_SENTRY_TRACE_BACKFILL } from './span-attributes-with-logic-attached';
 import { commonObjectToIsolationScope, commonObjectToPropagationContext } from './utils/tracingUtils';
 import { getSanitizedRequestUrl } from './utils/urls';
+import { maybeExtractSynchronousParamsAndSearchParams } from './utils/wrapperUtils';
 /**
  * Wraps a generation function (e.g. generateMetadata) with Sentry error and performance instrumentation.
  */
@@ -65,9 +66,7 @@ export function wrapGenerationFunctionWithSentry<F extends (...args: any[]) => a
       let data: Record<string, unknown> | undefined = undefined;
       if (getClient()?.getOptions().sendDefaultPii) {
         const props: unknown = args[0];
-        const params = props && typeof props === 'object' && 'params' in props ? props.params : undefined;
-        const searchParams =
-          props && typeof props === 'object' && 'searchParams' in props ? props.searchParams : undefined;
+        const { params, searchParams } = maybeExtractSynchronousParamsAndSearchParams(props);
         data = { params, searchParams };
       }
 

packages/nextjs/src/common/wrapServerComponentWithSentry.ts

@@ -26,6 +26,7 @@ import { TRANSACTION_ATTR_SENTRY_TRACE_BACKFILL } from './span-attributes-with-l
 import { flushSafelyWithTimeout } from './utils/responseEnd';
 import { commonObjectToIsolationScope, commonObjectToPropagationContext } from './utils/tracingUtils';
 import { getSanitizedRequestUrl } from './utils/urls';
+import { maybeExtractSynchronousParamsAndSearchParams } from './utils/wrapperUtils';
 
 /**
  * Wraps an `app` directory server component with Sentry error instrumentation.
@@ -64,10 +65,8 @@ export function wrapServerComponentWithSentry<F extends (...args: any[]) => any>
 
       if (getClient()?.getOptions().sendDefaultPii) {
         const props: unknown = args[0];
-        params =
-          props && typeof props === 'object' && 'params' in props
-            ? (props.params as Record<string, string>)
-            : undefined;
+        const { params: paramsFromProps } = maybeExtractSynchronousParamsAndSearchParams(props);
+        params = paramsFromProps;
       }
 
       isolationScope.setSDKProcessingMetadata({