From 3f4eaa8037865370f7104c9434685299fa018183 Mon Sep 17 00:00:00 2001
From: Luca Forstner <luca.forstner@sentry.io>
Date: Tue, 24 May 2022 12:53:27 +0000
Subject: [PATCH] fix(tracing): Don't use `querySelector` when not available

---
 packages/tracing/src/browser/browsertracing.ts | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/packages/tracing/src/browser/browsertracing.ts b/packages/tracing/src/browser/browsertracing.ts
index cb50474f3d4c..1872a08d728f 100644
--- a/packages/tracing/src/browser/browsertracing.ts
+++ b/packages/tracing/src/browser/browsertracing.ts
@@ -268,6 +268,13 @@ export function extractTraceDataFromMetaTags(): Partial<TransactionContext> | un
 
 /** Returns the value of a meta tag */
 export function getMetaContent(metaName: string): string | null {
-  const el = getGlobalObject<Window>().document.querySelector(`meta[name=${metaName}]`);
-  return el ? el.getAttribute('content') : null;
+  const globalObject = getGlobalObject<Window>();
+
+  // DOM/querySelector is not available in all environments
+  if (globalObject.document && globalObject.document.querySelector) {
+    const el = globalObject.document.querySelector(`meta[name=${metaName}]`);
+    return el ? el.getAttribute('content') : null;
+  } else {
+    return null;
+  }
 }