From 03eb680a83e304cfb3818058a90527ab294174bd Mon Sep 17 00:00:00 2001
From: Lukas Stracke <lukas.stracke@sentry.io>
Date: Wed, 18 Sep 2024 14:55:09 +0200
Subject: [PATCH] fix(browser): Try multiple options for `lazyLoadIntegration`
 script parent element lookup (#13717)

Change the order for looking up parent elements to inject the integration script:

1. `document.body`
2. `document.head`
3. `document.currentScript.parentElement`
---
 packages/browser/src/utils/lazyLoadIntegration.ts | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/packages/browser/src/utils/lazyLoadIntegration.ts b/packages/browser/src/utils/lazyLoadIntegration.ts
index 168d1fd1013b..82260ae9724f 100644
--- a/packages/browser/src/utils/lazyLoadIntegration.ts
+++ b/packages/browser/src/utils/lazyLoadIntegration.ts
@@ -68,7 +68,14 @@ export async function lazyLoadIntegration(
     script.addEventListener('error', reject);
   });
 
-  WINDOW.document.body.appendChild(script);
+  const currentScript = WINDOW.document.currentScript;
+  const parent = WINDOW.document.body || WINDOW.document.head || (currentScript && currentScript.parentElement);
+
+  if (parent) {
+    parent.appendChild(script);
+  } else {
+    throw new Error(`Could not find parent element to insert lazy-loaded ${name} script`);
+  }
 
   try {
     await waitForLoad;