From 29f3c0354facfee8fec0c450fc3debc0cae7e446 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Branimir=20Karad=C5=BEi=C4=87?= <bkaradzic@microsoft.com>
Date: Fri, 15 May 2026 22:18:46 -0700
Subject: [PATCH] Playground: use native fetch() polyfill from JsRuntimeHost

Replaces the JS XMLHttpRequest-based fetch shim with the native fetch()
polyfill that landed in JsRuntimeHost (PR #188). AppContext now calls
Babylon::Polyfills::Fetch::Initialize(env) alongside the other polyfills,
and Playground links the Fetch target.

Removes Apps/Playground/Scripts/fetch_polyfill.js and its SCRIPTS / script
loader entries. Bumps the JsRuntimeHost pin to pick up the native polyfill.

NOTE: the JsRuntimeHost pin temporarily points at the PR #188 branch
(bkaradzic-microsoft/JsRuntimeHost@1118799); switch it back to a
BabylonJS/JsRuntimeHost commit once #188 merges.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---
 Apps/Playground/Android/BabylonNative/CMakeLists.txt | 1 +
 Apps/Playground/CMakeLists.txt                       | 1 +
 Apps/Playground/Shared/AppContext.cpp                | 2 ++
 CMakeLists.txt                                       | 2 +-
 4 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/Apps/Playground/Android/BabylonNative/CMakeLists.txt b/Apps/Playground/Android/BabylonNative/CMakeLists.txt
index 3f1b5ee15..950e937a6 100644
--- a/Apps/Playground/Android/BabylonNative/CMakeLists.txt
+++ b/Apps/Playground/Android/BabylonNative/CMakeLists.txt
@@ -30,6 +30,7 @@ target_link_libraries(BabylonNativeJNI
     PRIVATE Blob
     PRIVATE Canvas
     PRIVATE Console
+    PRIVATE Fetch
     PRIVATE File
     PRIVATE GraphicsDevice
     PRIVATE NativeCamera
diff --git a/Apps/Playground/CMakeLists.txt b/Apps/Playground/CMakeLists.txt
index 90ddb81c8..2fdf39b82 100644
--- a/Apps/Playground/CMakeLists.txt
+++ b/Apps/Playground/CMakeLists.txt
@@ -156,6 +156,7 @@ target_link_libraries(Playground
     PRIVATE TextDecoder
     PRIVATE Window
     PRIVATE XMLHttpRequest
+    PRIVATE Fetch
     ${ADDITIONAL_LIBRARIES}
     ${BABYLON_NATIVE_PLAYGROUND_EXTENSION_LIBRARIES})
 
diff --git a/Apps/Playground/Shared/AppContext.cpp b/Apps/Playground/Shared/AppContext.cpp
index 116aef80f..1c123e574 100644
--- a/Apps/Playground/Shared/AppContext.cpp
+++ b/Apps/Playground/Shared/AppContext.cpp
@@ -20,6 +20,7 @@
 #include <Babylon/Polyfills/Blob.h>
 #include <Babylon/Polyfills/Canvas.h>
 #include <Babylon/Polyfills/Console.h>
+#include <Babylon/Polyfills/Fetch.h>
 #include <Babylon/Polyfills/File.h>
 #include <Babylon/Polyfills/Performance.h>
 #include <Babylon/Polyfills/TextDecoder.h>
@@ -186,6 +187,7 @@ AppContext::AppContext(
         Babylon::Polyfills::TextDecoder::Initialize(env);
 
         Babylon::Polyfills::XMLHttpRequest::Initialize(env);
+        Babylon::Polyfills::Fetch::Initialize(env);
         m_canvas.emplace(Babylon::Polyfills::Canvas::Initialize(env));
 
         Babylon::Plugins::NativeTracing::Initialize(env);
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7e4af3995..5ba7f9093 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -54,7 +54,7 @@ FetchContent_Declare(ios-cmake
     EXCLUDE_FROM_ALL)
 FetchContent_Declare(JsRuntimeHost
     GIT_REPOSITORY https://github.com/BabylonJS/JsRuntimeHost.git
-    GIT_TAG c88625b6d61b55c4589f02408d03826e83199870)
+    GIT_TAG 99457c03625782c3eeac6609f632538c7c9445d0)
 FetchContent_Declare(metal-cpp
     GIT_REPOSITORY https://github.com/bkaradzic/metal-cpp.git
     GIT_TAG metal-cpp_26