From a38ab1794d8fd9702ccf3b40f11804b6c38c8fe2 Mon Sep 17 00:00:00 2001
From: shiroyk <kumoocat@gmail.com>
Date: Sun, 4 Aug 2024 13:48:55 +0800
Subject: [PATCH] Added Error cause

---
 builtin_error.go | 27 ++++++++++++++++++++++++++-
 tc39_test.go     |  1 -
 2 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/builtin_error.go b/builtin_error.go
index b07bf6a7..a7eae7da 100644
--- a/builtin_error.go
+++ b/builtin_error.go
@@ -122,7 +122,19 @@ func (r *Runtime) newErrorObject(proto *Object, class string) *errorObject {
 func (r *Runtime) builtin_Error(args []Value, proto *Object) *Object {
 	obj := r.newErrorObject(proto, classError)
 	if len(args) > 0 && args[0] != _undefined {
-		obj._putProp("message", args[0], true, false, true)
+		obj._putProp("message", args[0].ToString(), true, false, true)
+	}
+	if len(args) > 1 && args[1] != _undefined {
+		if options, ok := args[1].(*Object); ok {
+			if options.hasProperty(asciiString("cause")) {
+				obj.defineOwnPropertyStr("cause", PropertyDescriptor{
+					Writable:     FLAG_TRUE,
+					Enumerable:   FLAG_FALSE,
+					Configurable: FLAG_TRUE,
+					Value:        options.Get("cause"),
+				}, true)
+			}
+		}
 	}
 	return obj.val
 }
@@ -138,6 +150,19 @@ func (r *Runtime) builtin_AggregateError(args []Value, proto *Object) *Object {
 	}
 	obj._putProp("errors", r.newArrayValues(errors), true, false, true)
 
+	if len(args) > 2 && args[2] != _undefined {
+		if options, ok := args[2].(*Object); ok {
+			if options.hasProperty(asciiString("cause")) {
+				obj.defineOwnPropertyStr("cause", PropertyDescriptor{
+					Writable:     FLAG_TRUE,
+					Enumerable:   FLAG_FALSE,
+					Configurable: FLAG_TRUE,
+					Value:        options.Get("cause"),
+				}, true)
+			}
+		}
+	}
+
 	return obj.val
 }
 
diff --git a/tc39_test.go b/tc39_test.go
index ea9d2234..bea79580 100644
--- a/tc39_test.go
+++ b/tc39_test.go
@@ -226,7 +226,6 @@ var (
 		"__setter__",
 		"ShadowRealm",
 		"SharedArrayBuffer",
-		"error-cause",
 		"decorators",
 		"regexp-v-flag",
 	}