From e90a9646f4c1f729861c4e46d1c77ec2eb8846e4 Mon Sep 17 00:00:00 2001
From: "stainless-app[bot]"
 <142633134+stainless-app[bot]@users.noreply.github.com>
Date: Thu, 21 Mar 2024 15:55:37 +0000
Subject: [PATCH] fix: handle process.env being undefined in debug func (#354)

---
 src/core.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/core.ts b/src/core.ts
index 297017ca..9d8e22c4 100644
--- a/src/core.ts
+++ b/src/core.ts
@@ -1059,7 +1059,7 @@ function applyHeadersMut(targetHeaders: Headers, newHeaders: Headers): void {
 }
 
 export function debug(action: string, ...args: any[]) {
-  if (typeof process !== 'undefined' && process.env['DEBUG'] === 'true') {
+  if (typeof process !== 'undefined' && process?.env?.['DEBUG'] === 'true') {
     console.log(`Mux:DEBUG:${action}`, ...args);
   }
 }