From 7de446cb780716d59b1e113d41059b382ace6519 Mon Sep 17 00:00:00 2001
From: Lukas Stracke <lukas.stracke@sentry.io>
Date: Wed, 29 Jul 2026 14:34:47 +0200
Subject: [PATCH] ref(core): Tree-shake `spanStreamingIntegration` when tracing
 is disabled

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
---
 packages/browser/src/sdk.ts                | 8 +++++++-
 packages/core/src/server-runtime-client.ts | 8 +++++++-
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/packages/browser/src/sdk.ts b/packages/browser/src/sdk.ts
index 0309aed98248..ae17fb2d1637 100644
--- a/packages/browser/src/sdk.ts
+++ b/packages/browser/src/sdk.ts
@@ -25,6 +25,8 @@ import { makeFetchTransport } from './transports/fetch';
 import { normalizeStringifyValue } from './normalizeStringifyValue';
 import { checkAndWarnIfIsEmbeddedBrowserExtension } from './utils/detectBrowserExtension';
 
+declare const __SENTRY_TRACING__: boolean;
+
 /** Get the default integrations for the browser SDK. */
 export function getDefaultIntegrations(_options: Options): Integration[] {
   /**
@@ -116,7 +118,11 @@ export function init(options: BrowserOptions = {}): Client | undefined {
     defaultIntegrations,
   });
 
-  if (options.traceLifecycle !== 'static' && !integrations.some(integration => integration.name === 'SpanStreaming')) {
+  if (
+    (typeof __SENTRY_TRACING__ === 'undefined' || __SENTRY_TRACING__) &&
+    options.traceLifecycle !== 'static' &&
+    !integrations.some(integration => integration.name === 'SpanStreaming')
+  ) {
     integrations.push(spanStreamingIntegration());
   }
 
diff --git a/packages/core/src/server-runtime-client.ts b/packages/core/src/server-runtime-client.ts
index ae564663f6c7..ba91ece87ac9 100644
--- a/packages/core/src/server-runtime-client.ts
+++ b/packages/core/src/server-runtime-client.ts
@@ -25,6 +25,8 @@ export interface ServerRuntimeClientOptions extends ClientOptions<BaseTransportO
   serverName?: string;
 }
 
+declare const __SENTRY_TRACING__: boolean;
+
 /**
  * The Sentry Server Runtime Client SDK.
  */
@@ -43,7 +45,11 @@ export class ServerRuntimeClient<
     // When span streaming is enabled (`traceLifecycle: 'stream'`), the `spanStreamingIntegration`
     // is required to flush spans. We add it here so the individual server SDKs don't have to.
     // A user-provided `spanStreamingIntegration` always takes precedence over the one we add.
-    if (options.traceLifecycle !== 'static' && !options.integrations.some(i => i.name === 'SpanStreaming')) {
+    if (
+      (typeof __SENTRY_TRACING__ === 'undefined' || __SENTRY_TRACING__) &&
+      options.traceLifecycle !== 'static' &&
+      !options.integrations.some(i => i.name === 'SpanStreaming')
+    ) {
       options.integrations.push(spanStreamingIntegration());
     }