From 36bcc3775a71c22f1f5cd77bee229f219f8fc687 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=81lvaro=20Velad=20Galv=C3=A1n?= <ladvan91@hotmail.com>
Date: Tue, 14 Mar 2023 19:12:56 +0100
Subject: [PATCH] fix: Fix fetch plugin with old implementations (#5091)

Fixes https://github.com/shaka-project/shaka-player/issues/5088
---
 lib/net/http_fetch_plugin.js | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/lib/net/http_fetch_plugin.js b/lib/net/http_fetch_plugin.js
index b5320258c6..b73178be0c 100644
--- a/lib/net/http_fetch_plugin.js
+++ b/lib/net/http_fetch_plugin.js
@@ -243,6 +243,16 @@ shaka.net.HttpFetchPlugin = class {
     } else {
       return false;
     }
+    // Old fetch implementations hasn't body and ReadableStream implementation
+    // See: https://github.com/shaka-project/shaka-player/issues/5088
+    if (window.Response) {
+      const response = new Response('');
+      if (!response.body) {
+        return false;
+      }
+    } else {
+      return false;
+    }
     return !!(window.fetch && window.AbortController);
   }
 };