From 3013e3a9e6beaaf67784a550f34d32208f4424ff Mon Sep 17 00:00:00 2001
From: sjhddh <jhao.sun@gmail.com>
Date: Sat, 14 Mar 2026 08:42:02 +0000
Subject: [PATCH] fix(net): fetch() should reject with a TypeError on network
 errors

---
 src/browser/webapi/net/Fetch.zig | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/browser/webapi/net/Fetch.zig b/src/browser/webapi/net/Fetch.zig
index 9b0f2f98..71b01c56 100644
--- a/src/browser/webapi/net/Fetch.zig
+++ b/src/browser/webapi/net/Fetch.zig
@@ -192,7 +192,10 @@ fn httpErrorCallback(ctx: *anyopaque, err: anyerror) void {
     self._page.js.localScope(&ls);
     defer ls.deinit();
 
-    ls.toLocal(self._resolver).reject("fetch error", @errorName(err));
+    // fetch() must reject with a TypeError on network errors per spec
+    const err_handle = ls.local.isolate.createTypeError("Failed to fetch");
+    const err_val = js.Value{ .local = ls.local, .handle = err_handle };
+    ls.toLocal(self._resolver).reject("fetch error", err_val);
 }
 
 fn httpShutdownCallback(ctx: *anyopaque) void {