From df4cac4bded2973c966173c8bfc7c137fdd35538 Mon Sep 17 00:00:00 2001
From: nick-delirium <nikita@openreplay.com>
Date: Mon, 21 Aug 2023 12:29:43 +0200
Subject: [PATCH] fix(tracker): fix fetch proxy headers check

---
 tracker/tracker/CHANGELOG.md                           | 4 ++++
 tracker/tracker/package.json                           | 2 +-
 tracker/tracker/src/main/modules/Network/fetchProxy.ts | 4 +++-
 3 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/tracker/tracker/CHANGELOG.md b/tracker/tracker/CHANGELOG.md
index 514a96daa..716feb549 100644
--- a/tracker/tracker/CHANGELOG.md
+++ b/tracker/tracker/CHANGELOG.md
@@ -1,3 +1,7 @@
+# 9.0.5
+
+- same fixes but for fetch proxy
+
 # 9.0.2 & 9.0.3 & 9.0.4
 
 - fixes for "setSessionTokenHeader" method
diff --git a/tracker/tracker/package.json b/tracker/tracker/package.json
index cd06e6cfc..3348f387b 100644
--- a/tracker/tracker/package.json
+++ b/tracker/tracker/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@openreplay/tracker",
   "description": "The OpenReplay tracker main package",
-  "version": "9.0.4",
+  "version": "9.0.5",
   "keywords": [
     "logging",
     "replay"
diff --git a/tracker/tracker/src/main/modules/Network/fetchProxy.ts b/tracker/tracker/src/main/modules/Network/fetchProxy.ts
index 4ebeccc7c..ab3a7f1a9 100644
--- a/tracker/tracker/src/main/modules/Network/fetchProxy.ts
+++ b/tracker/tracker/src/main/modules/Network/fetchProxy.ts
@@ -147,14 +147,16 @@ export class FetchProxyHandler<T extends typeof fetch> implements ProxyHandler<T
       if (argsList[1] === undefined && argsList[0] instanceof Request) {
         return argsList[0].headers.append(name, value)
       } else {
+        if (!argsList[1]) argsList[1] = {}
         if (argsList[1].headers === undefined) {
-          argsList[1].headers = {}
+          argsList[1] = { ...argsList[1], headers: {} }
         }
         if (argsList[1].headers instanceof Headers) {
           argsList[1].headers.append(name, value)
         } else if (Array.isArray(argsList[1].headers)) {
           argsList[1].headers.push([name, value])
         } else {
+          // @ts-ignore
           argsList[1].headers[name] = value
         }
       }