From 210ae2ffb2ef960d795fd785b69ea11379590e4f Mon Sep 17 00:00:00 2001
From: zhiyuan <32867472+zhiyuang@users.noreply.github.com>
Date: Thu, 20 Oct 2022 16:40:58 +0800
Subject: Fix Bun.serve error handler error param (#1359)

---
 src/bun.js/bindings/bindings.cpp | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'src/bun.js/bindings/bindings.cpp')

diff --git a/src/bun.js/bindings/bindings.cpp b/src/bun.js/bindings/bindings.cpp
index 0cba2185d..d0de85849 100644
--- a/src/bun.js/bindings/bindings.cpp
+++ b/src/bun.js/bindings/bindings.cpp
@@ -2556,6 +2556,20 @@ void JSC__JSValue__getNameProperty(JSC__JSValue JSValue0, JSC__JSGlobalObject* a
     arg2->len = 0;
 }
 
+JSC__JSValue JSC__JSValue__toError(JSC__JSValue JSValue0, JSC__JSGlobalObject* arg1)
+{
+    JSC::JSValue value = JSC::JSValue::decode(JSValue0);
+    if (JSC::Exception* jscException = JSC::jsDynamicCast<JSC::Exception*>(value)) {
+        if (JSC::ErrorInstance* error = JSC::jsDynamicCast<JSC::ErrorInstance*>(jscException->value())) {
+            return JSC::JSValue::encode(JSC::JSValue(error));
+        }
+    }
+    if (JSC::ErrorInstance* error = JSC::jsDynamicCast<JSC::ErrorInstance*>(value)) {
+        return JSC::JSValue::encode(JSC::JSValue(error));
+    }
+    return JSC::JSValue::encode(JSC::jsUndefined());
+}
+
 void JSC__JSValue__toZigException(JSC__JSValue JSValue0, JSC__JSGlobalObject* arg1,
     ZigException* exception)
 {
-- 
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