From ec01f4c57ee1e5f95eb139dcedf414f6fe15bc31 Mon Sep 17 00:00:00 2001
From: Yukai Huang <yukaihuangtw@gmail.com>
Date: Wed, 29 Nov 2023 14:06:42 +0800
Subject: [PATCH] fix: _app client build (#13)

---
 pages/_app.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pages/_app.js b/pages/_app.js
index 652a91c..d115323 100644
--- a/pages/_app.js
+++ b/pages/_app.js
@@ -27,7 +27,7 @@ const tagManagerArgs = {
   gtmId: process.env.NEXT_PUBLIC_GTM_ID,
 }
 
-if (tagManagerArgs.gtmId) {
+if (tagManagerArgs.gtmId && typeof window !== 'undefined') {
   TagManager.initialize(tagManagerArgs)
 }