LibJS: Remove GlobalObject from VM::throw_completion()

This is a continuation of the previous five commits.

A first big step into the direction of no longer having to pass a realm
(or currently, a global object) trough layers upon layers of AOs!
Unlike the create() APIs we can safely assume that this is only ever
called when a running execution context and therefore current realm
exists. If not, you can always manually allocate the Error and put it in
a Completion :^)

In the spec, throw exceptions implicitly use the current realm's
intrinsics as well: https://tc39.es/ecma262/#sec-throw-an-exception

Userland/Libraries/LibWeb/Bindings/AudioConstructor.cpp

@@ -31,7 +31,7 @@ void AudioConstructor::initialize(JS::Realm& realm)
 
 JS::ThrowCompletionOr<JS::Value> AudioConstructor::call()
 {
-    return vm().throw_completion<JS::TypeError>(global_object(), JS::ErrorType::ConstructorWithoutNew, "Audio");
+    return vm().throw_completion<JS::TypeError>(JS::ErrorType::ConstructorWithoutNew, "Audio");
 }
 
 // https://html.spec.whatwg.org/multipage/media.html#dom-audio

Userland/Libraries/LibWeb/Bindings/CSSNamespace.cpp

@@ -30,7 +30,7 @@ void CSSNamespace::initialize(JS::Realm& realm)
 JS_DEFINE_NATIVE_FUNCTION(CSSNamespace::escape)
 {
     if (!vm.argument_count())
-        return vm.throw_completion<JS::TypeError>(global_object, JS::ErrorType::BadArgCountAtLeastOne, "CSS.escape");
+        return vm.throw_completion<JS::TypeError>(JS::ErrorType::BadArgCountAtLeastOne, "CSS.escape");
 
     auto identifier = TRY(vm.argument(0).to_string(global_object));
     return JS::js_string(vm, Web::CSS::serialize_an_identifier(identifier));
@@ -40,7 +40,7 @@ JS_DEFINE_NATIVE_FUNCTION(CSSNamespace::escape)
 JS_DEFINE_NATIVE_FUNCTION(CSSNamespace::supports)
 {
     if (!vm.argument_count())
-        return vm.throw_completion<JS::TypeError>(global_object, JS::ErrorType::BadArgCountAtLeastOne, "CSS.supports");
+        return vm.throw_completion<JS::TypeError>(JS::ErrorType::BadArgCountAtLeastOne, "CSS.supports");
 
     if (vm.argument_count() >= 2) {
         // When the supports(property, value) method is invoked with two arguments property and value:

Userland/Libraries/LibWeb/Bindings/CrossOriginAbstractOperations.cpp

@@ -81,7 +81,7 @@ JS::ThrowCompletionOr<JS::PropertyDescriptor> cross_origin_property_fallback(JS:
         return JS::PropertyDescriptor { .value = JS::js_undefined(), .writable = false, .enumerable = false, .configurable = true };
 
     // 2. Throw a "SecurityError" DOMException.
-    return vm.throw_completion<DOMExceptionWrapper>(global_object, DOM::SecurityError::create(String::formatted("Can't access property '{}' on cross-origin object", property_key)));
+    return vm.throw_completion<DOMExceptionWrapper>(DOM::SecurityError::create(String::formatted("Can't access property '{}' on cross-origin object", property_key)));
 }
 
 // 7.2.3.3 IsPlatformObjectSameOrigin ( O ), https://html.spec.whatwg.org/multipage/browsers.html#isplatformobjectsameorigin-(-o-)
@@ -201,7 +201,7 @@ JS::ThrowCompletionOr<JS::Value> cross_origin_get(JS::GlobalObject& global_objec
 
     // 6. If getter is undefined, then throw a "SecurityError" DOMException.
     if (!getter.has_value())
-        return vm.throw_completion<DOMExceptionWrapper>(global_object, DOM::SecurityError::create(String::formatted("Can't get property '{}' on cross-origin object", property_key)));
+        return vm.throw_completion<DOMExceptionWrapper>(DOM::SecurityError::create(String::formatted("Can't get property '{}' on cross-origin object", property_key)));
 
     // 7. Return ? Call(getter, Receiver).
     return JS::call(global_object, *getter, receiver);
@@ -229,7 +229,7 @@ JS::ThrowCompletionOr<bool> cross_origin_set(JS::GlobalObject& global_object, JS
     }
 
     // 4. Throw a "SecurityError" DOMException.
-    return vm.throw_completion<DOMExceptionWrapper>(global_object, DOM::SecurityError::create(String::formatted("Can't set property '{}' on cross-origin object", property_key)));
+    return vm.throw_completion<DOMExceptionWrapper>(DOM::SecurityError::create(String::formatted("Can't set property '{}' on cross-origin object", property_key)));
 }
 
 // 7.2.3.7 CrossOriginOwnPropertyKeys ( O ), https://html.spec.whatwg.org/multipage/browsers.html#crossoriginownpropertykeys-(-o-)

Userland/Libraries/LibWeb/Bindings/ExceptionOrUtils.h

@@ -67,7 +67,7 @@ ALWAYS_INLINE JS::Completion dom_exception_to_throw_completion(auto&& global_obj
             switch (exception.type) {
 #define E(x)                          \
     case DOM::SimpleExceptionType::x: \
-        return vm.template throw_completion<JS::x>(global_object, exception.message);
+        return vm.template throw_completion<JS::x>(exception.message);
 
                 ENUMERATE_SIMPLE_WEBIDL_EXCEPTION_TYPES(E)
 
@@ -77,7 +77,7 @@ ALWAYS_INLINE JS::Completion dom_exception_to_throw_completion(auto&& global_obj
             }
         },
         [&](NonnullRefPtr<DOM::DOMException> exception) {
-            return vm.template throw_completion<DOMExceptionWrapper>(global_object, move(exception));
+            return vm.template throw_completion<DOMExceptionWrapper>(move(exception));
         });
 }
 

Userland/Libraries/LibWeb/Bindings/IDLAbstractOperations.h

@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2021, Luke Wilde <lukew@serenityos.org>
- * Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
+ * Copyright (c) 2021-2022, Linus Groh <linusg@serenityos.org>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -88,7 +88,7 @@ JS::Completion call_user_object_operation(Bindings::CallbackType& callback, Stri
 
         // 4. If ! IsCallable(X) is false, then set completion to a new Completion{[[Type]]: throw, [[Value]]: a newly created TypeError object, [[Target]]: empty}, and jump to the step labeled return.
         if (!get_result.value().is_function()) {
-            completion = realm.vm().template throw_completion<JS::TypeError>(global_object, JS::ErrorType::NotAFunction, get_result.value().to_string_without_side_effects());
+            completion = realm.vm().template throw_completion<JS::TypeError>(JS::ErrorType::NotAFunction, get_result.value().to_string_without_side_effects());
             return clean_up_on_return(stored_settings, relevant_settings, completion);
         }
 

Userland/Libraries/LibWeb/Bindings/ImageConstructor.cpp

@@ -31,7 +31,7 @@ void ImageConstructor::initialize(JS::Realm& realm)
 
 JS::ThrowCompletionOr<JS::Value> ImageConstructor::call()
 {
-    return vm().throw_completion<JS::TypeError>(global_object(), JS::ErrorType::ConstructorWithoutNew, "Image");
+    return vm().throw_completion<JS::TypeError>(JS::ErrorType::ConstructorWithoutNew, "Image");
 }
 
 // https://html.spec.whatwg.org/multipage/embedded-content.html#dom-image

Userland/Libraries/LibWeb/Bindings/LocationConstructor.cpp

@@ -20,12 +20,12 @@ LocationConstructor::~LocationConstructor() = default;
 
 JS::ThrowCompletionOr<JS::Value> LocationConstructor::call()
 {
-    return vm().throw_completion<JS::TypeError>(global_object(), JS::ErrorType::ConstructorWithoutNew, "Location");
+    return vm().throw_completion<JS::TypeError>(JS::ErrorType::ConstructorWithoutNew, "Location");
 }
 
 JS::ThrowCompletionOr<JS::Object*> LocationConstructor::construct(FunctionObject&)
 {
-    return vm().throw_completion<JS::TypeError>(global_object(), JS::ErrorType::NotAConstructor, "Location");
+    return vm().throw_completion<JS::TypeError>(JS::ErrorType::NotAConstructor, "Location");
 }
 
 void LocationConstructor::initialize(JS::Realm& realm)

Userland/Libraries/LibWeb/Bindings/LocationObject.cpp

@@ -78,7 +78,7 @@ static JS::ThrowCompletionOr<LocationObject*> typed_this_value(JS::GlobalObject&
     auto& vm = global_object.vm();
     auto this_value = vm.this_value(global_object);
     if (!this_value.is_object() || !is<LocationObject>(this_value.as_object()))
-        return vm.throw_completion<JS::TypeError>(global_object, JS::ErrorType::NotAnObjectOfType, "Location");
+        return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAnObjectOfType, "Location");
     return static_cast<LocationObject*>(&this_value.as_object());
 }
 
@@ -104,7 +104,7 @@ JS_DEFINE_NATIVE_FUNCTION(LocationObject::href_setter)
     auto new_href = TRY(vm.argument(0).to_string(global_object));
     auto href_url = window.impl().associated_document().parse_url(new_href);
     if (!href_url.is_valid())
-        return vm.throw_completion<JS::URIError>(global_object, String::formatted("Invalid URL '{}'", new_href));
+        return vm.throw_completion<JS::URIError>(String::formatted("Invalid URL '{}'", new_href));
 
     // 3. Location-object navigate given the resulting URL record.
     window.impl().did_set_location_href({}, href_url);
@@ -313,7 +313,7 @@ JS::ThrowCompletionOr<bool> LocationObject::internal_define_own_property(JS::Pro
     }
 
     // 2. Throw a "SecurityError" DOMException.
-    return vm.throw_completion<DOMExceptionWrapper>(global_object, DOM::SecurityError::create(String::formatted("Can't define property '{}' on cross-origin object", property_key)));
+    return vm.throw_completion<DOMExceptionWrapper>(DOM::SecurityError::create(String::formatted("Can't define property '{}' on cross-origin object", property_key)));
 }
 
 // 7.10.5.7 [[Get]] ( P, Receiver ), https://html.spec.whatwg.org/multipage/history.html#location-get
@@ -353,7 +353,7 @@ JS::ThrowCompletionOr<bool> LocationObject::internal_delete(JS::PropertyKey cons
         return JS::Object::internal_delete(property_key);
 
     // 2. Throw a "SecurityError" DOMException.
-    return vm.throw_completion<DOMExceptionWrapper>(global_object, DOM::SecurityError::create(String::formatted("Can't delete property '{}' on cross-origin object", property_key)));
+    return vm.throw_completion<DOMExceptionWrapper>(DOM::SecurityError::create(String::formatted("Can't delete property '{}' on cross-origin object", property_key)));
 }
 
 // 7.10.5.10 [[OwnPropertyKeys]] ( ), https://html.spec.whatwg.org/multipage/history.html#location-ownpropertykeys

Userland/Libraries/LibWeb/Bindings/MainThreadVM.cpp

@@ -284,7 +284,7 @@ JS::VM& main_thread_vm()
         // FIXME: Implement 8.1.5.4.4 HostGetSupportedImportAssertions(), https://html.spec.whatwg.org/multipage/webappapis.html#hostgetsupportedimportassertions
 
         vm->host_resolve_imported_module = [&](JS::ScriptOrModule, JS::ModuleRequest const&) -> JS::ThrowCompletionOr<NonnullRefPtr<JS::Module>> {
-            return vm->throw_completion<JS::InternalError>(vm->current_realm()->global_object(), JS::ErrorType::NotImplemented, "Modules in the browser");
+            return vm->throw_completion<JS::InternalError>(JS::ErrorType::NotImplemented, "Modules in the browser");
         };
 
         // NOTE: We push a dummy execution context onto the JS execution context stack,

Userland/Libraries/LibWeb/Bindings/NavigatorConstructor.cpp

@@ -20,12 +20,12 @@ NavigatorConstructor::~NavigatorConstructor() = default;
 
 JS::ThrowCompletionOr<JS::Value> NavigatorConstructor::call()
 {
-    return vm().throw_completion<JS::TypeError>(global_object(), JS::ErrorType::ConstructorWithoutNew, "Navigator");
+    return vm().throw_completion<JS::TypeError>(JS::ErrorType::ConstructorWithoutNew, "Navigator");
 }
 
 JS::ThrowCompletionOr<JS::Object*> NavigatorConstructor::construct(FunctionObject&)
 {
-    return vm().throw_completion<JS::TypeError>(global_object(), JS::ErrorType::NotAConstructor, "Navigator");
+    return vm().throw_completion<JS::TypeError>(JS::ErrorType::NotAConstructor, "Navigator");
 }
 
 void NavigatorConstructor::initialize(JS::Realm& realm)

Userland/Libraries/LibWeb/Bindings/OptionConstructor.cpp

@@ -32,7 +32,7 @@ void OptionConstructor::initialize(JS::Realm& realm)
 
 JS::ThrowCompletionOr<JS::Value> OptionConstructor::call()
 {
-    return vm().throw_completion<JS::TypeError>(global_object(), JS::ErrorType::ConstructorWithoutNew, "Option");
+    return vm().throw_completion<JS::TypeError>(JS::ErrorType::ConstructorWithoutNew, "Option");
 }
 
 // https://html.spec.whatwg.org/multipage/form-elements.html#dom-option

Userland/Libraries/LibWeb/Bindings/Replaceable.h

@@ -1,15 +1,15 @@
 /*
- * Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
+ * Copyright (c) 2021-2022, Linus Groh <linusg@serenityos.org>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
 #pragma once
 
-#define REPLACEABLE_PROPERTY_SETTER(ObjectType, property)                                                        \
-    auto this_value = vm.this_value(global_object);                                                              \
-    if (!this_value.is_object() || !is<ObjectType>(this_value.as_object()))                                      \
-        return vm.throw_completion<JS::TypeError>(global_object, JS::ErrorType::NotAnObjectOfType, #ObjectType); \
-    TRY(this_value.as_object().internal_define_own_property(                                                     \
-        #property, JS::PropertyDescriptor { .value = vm.argument(0), .writable = true }));                       \
+#define REPLACEABLE_PROPERTY_SETTER(ObjectType, property)                                         \
+    auto this_value = vm.this_value(global_object);                                               \
+    if (!this_value.is_object() || !is<ObjectType>(this_value.as_object()))                       \
+        return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAnObjectOfType, #ObjectType); \
+    TRY(this_value.as_object().internal_define_own_property(                                      \
+        #property, JS::PropertyDescriptor { .value = vm.argument(0), .writable = true }));        \
     return JS::js_undefined();

Userland/Libraries/LibWeb/Bindings/WindowConstructor.cpp

@@ -20,12 +20,12 @@ WindowConstructor::~WindowConstructor() = default;
 
 JS::ThrowCompletionOr<JS::Value> WindowConstructor::call()
 {
-    return vm().throw_completion<JS::TypeError>(global_object(), JS::ErrorType::ConstructorWithoutNew, "Window");
+    return vm().throw_completion<JS::TypeError>(JS::ErrorType::ConstructorWithoutNew, "Window");
 }
 
 JS::ThrowCompletionOr<JS::Object*> WindowConstructor::construct(FunctionObject&)
 {
-    return vm().throw_completion<JS::TypeError>(global_object(), JS::ErrorType::NotAConstructor, "Window");
+    return vm().throw_completion<JS::TypeError>(JS::ErrorType::NotAConstructor, "Window");
 }
 
 void WindowConstructor::initialize(JS::Realm& realm)

Userland/Libraries/LibWeb/Bindings/WindowObject.cpp

@@ -187,7 +187,7 @@ static JS::ThrowCompletionOr<HTML::Window*> impl_from(JS::VM& vm, JS::GlobalObje
     auto* this_object = MUST(this_value.to_object(global_object));
 
     if (!is<WindowObject>(*this_object))
-        return vm.throw_completion<JS::TypeError>(global_object, JS::ErrorType::NotAnObjectOfType, "WindowObject");
+        return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAnObjectOfType, "WindowObject");
     return &static_cast<WindowObject*>(this_object)->impl();
 }
 
@@ -242,7 +242,7 @@ JS_DEFINE_NATIVE_FUNCTION(WindowObject::set_timeout)
     auto* impl = TRY(impl_from(vm, global_object));
 
     if (!vm.argument_count())
-        return vm.throw_completion<JS::TypeError>(global_object, JS::ErrorType::BadArgCountAtLeastOne, "setTimeout");
+        return vm.throw_completion<JS::TypeError>(JS::ErrorType::BadArgCountAtLeastOne, "setTimeout");
 
     auto handler = TRY(make_timer_handler(global_object, vm.argument(0)));
 
@@ -264,7 +264,7 @@ JS_DEFINE_NATIVE_FUNCTION(WindowObject::set_interval)
     auto* impl = TRY(impl_from(vm, global_object));
 
     if (!vm.argument_count())
-        return vm.throw_completion<JS::TypeError>(global_object, JS::ErrorType::BadArgCountAtLeastOne, "setInterval");
+        return vm.throw_completion<JS::TypeError>(JS::ErrorType::BadArgCountAtLeastOne, "setInterval");
 
     auto handler = TRY(make_timer_handler(global_object, vm.argument(0)));
 
@@ -310,10 +310,10 @@ JS_DEFINE_NATIVE_FUNCTION(WindowObject::request_animation_frame)
 {
     auto* impl = TRY(impl_from(vm, global_object));
     if (!vm.argument_count())
-        return vm.throw_completion<JS::TypeError>(global_object, JS::ErrorType::BadArgCountOne, "requestAnimationFrame");
+        return vm.throw_completion<JS::TypeError>(JS::ErrorType::BadArgCountOne, "requestAnimationFrame");
     auto* callback_object = TRY(vm.argument(0).to_object(global_object));
     if (!callback_object->is_function())
-        return vm.throw_completion<JS::TypeError>(global_object, JS::ErrorType::NotAFunctionNoParam);
+        return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAFunctionNoParam);
     NonnullOwnPtr<Bindings::CallbackType> callback = adopt_own(*new Bindings::CallbackType(JS::make_handle(callback_object), HTML::incumbent_settings_object()));
     return JS::Value(impl->request_animation_frame(move(callback)));
 }
@@ -322,7 +322,7 @@ JS_DEFINE_NATIVE_FUNCTION(WindowObject::cancel_animation_frame)
 {
     auto* impl = TRY(impl_from(vm, global_object));
     if (!vm.argument_count())
-        return vm.throw_completion<JS::TypeError>(global_object, JS::ErrorType::BadArgCountOne, "cancelAnimationFrame");
+        return vm.throw_completion<JS::TypeError>(JS::ErrorType::BadArgCountOne, "cancelAnimationFrame");
     auto id = TRY(vm.argument(0).to_i32(global_object));
     impl->cancel_animation_frame(id);
     return JS::js_undefined();
@@ -332,10 +332,10 @@ JS_DEFINE_NATIVE_FUNCTION(WindowObject::queue_microtask)
 {
     auto* impl = TRY(impl_from(vm, global_object));
     if (!vm.argument_count())
-        return vm.throw_completion<JS::TypeError>(global_object, JS::ErrorType::BadArgCountAtLeastOne, "queueMicrotask");
+        return vm.throw_completion<JS::TypeError>(JS::ErrorType::BadArgCountAtLeastOne, "queueMicrotask");
     auto* callback_object = TRY(vm.argument(0).to_object(global_object));
     if (!callback_object->is_function())
-        return vm.throw_completion<JS::TypeError>(global_object, JS::ErrorType::NotAFunctionNoParam);
+        return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAFunctionNoParam);
 
     auto callback = adopt_own(*new Bindings::CallbackType(JS::make_handle(callback_object), HTML::incumbent_settings_object()));
 
@@ -347,10 +347,10 @@ JS_DEFINE_NATIVE_FUNCTION(WindowObject::request_idle_callback)
 {
     auto* impl = TRY(impl_from(vm, global_object));
     if (!vm.argument_count())
-        return vm.throw_completion<JS::TypeError>(global_object, JS::ErrorType::BadArgCountAtLeastOne, "requestIdleCallback");
+        return vm.throw_completion<JS::TypeError>(JS::ErrorType::BadArgCountAtLeastOne, "requestIdleCallback");
     auto* callback_object = TRY(vm.argument(0).to_object(global_object));
     if (!callback_object->is_function())
-        return vm.throw_completion<JS::TypeError>(global_object, JS::ErrorType::NotAFunctionNoParam);
+        return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAFunctionNoParam);
     // FIXME: accept options object
 
     auto callback = adopt_own(*new Bindings::CallbackType(JS::make_handle(callback_object), HTML::incumbent_settings_object()));
@@ -362,7 +362,7 @@ JS_DEFINE_NATIVE_FUNCTION(WindowObject::cancel_idle_callback)
 {
     auto* impl = TRY(impl_from(vm, global_object));
     if (!vm.argument_count())
-        return vm.throw_completion<JS::TypeError>(global_object, JS::ErrorType::BadArgCountOne, "cancelIdleCallback");
+        return vm.throw_completion<JS::TypeError>(JS::ErrorType::BadArgCountOne, "cancelIdleCallback");
     auto id = TRY(vm.argument(0).to_u32(global_object));
     impl->cancel_idle_callback(id);
     return JS::js_undefined();
@@ -371,11 +371,11 @@ JS_DEFINE_NATIVE_FUNCTION(WindowObject::cancel_idle_callback)
 JS_DEFINE_NATIVE_FUNCTION(WindowObject::atob)
 {
     if (!vm.argument_count())
-        return vm.throw_completion<JS::TypeError>(global_object, JS::ErrorType::BadArgCountOne, "atob");
+        return vm.throw_completion<JS::TypeError>(JS::ErrorType::BadArgCountOne, "atob");
     auto string = TRY(vm.argument(0).to_string(global_object));
     auto decoded = decode_base64(StringView(string));
     if (decoded.is_error())
-        return vm.throw_completion<JS::TypeError>(global_object, JS::ErrorType::InvalidFormat, "Base64");
+        return vm.throw_completion<JS::TypeError>(JS::ErrorType::InvalidFormat, "Base64");
 
     // decode_base64() returns a byte string. LibJS uses UTF-8 for strings. Use Latin1Decoder to convert bytes 128-255 to UTF-8.
     auto decoder = TextCodec::decoder_for("windows-1252");
@@ -386,14 +386,14 @@ JS_DEFINE_NATIVE_FUNCTION(WindowObject::atob)
 JS_DEFINE_NATIVE_FUNCTION(WindowObject::btoa)
 {
     if (!vm.argument_count())
-        return vm.throw_completion<JS::TypeError>(global_object, JS::ErrorType::BadArgCountOne, "btoa");
+        return vm.throw_completion<JS::TypeError>(JS::ErrorType::BadArgCountOne, "btoa");
     auto string = TRY(vm.argument(0).to_string(global_object));
 
     Vector<u8> byte_string;
     byte_string.ensure_capacity(string.length());
     for (u32 code_point : Utf8View(string)) {
         if (code_point > 0xff)
-            return vm.throw_completion<JS::InvalidCharacterError>(global_object, JS::ErrorType::NotAByteString, "btoa");
+            return vm.throw_completion<JS::InvalidCharacterError>(JS::ErrorType::NotAByteString, "btoa");
         byte_string.append(code_point);
     }
 
@@ -441,7 +441,7 @@ JS_DEFINE_NATIVE_FUNCTION(WindowObject::performance_setter)
     // https://webidl.spec.whatwg.org/#dfn-attribute-setter
     // 4.1. If no arguments were passed, then throw a TypeError.
     if (vm.argument_count() == 0)
-        return vm.throw_completion<JS::TypeError>(global_object, JS::ErrorType::BadArgCountOne, "set performance");
+        return vm.throw_completion<JS::TypeError>(JS::ErrorType::BadArgCountOne, "set performance");
 
     auto* impl = TRY(impl_from(vm, global_object));
 
@@ -517,7 +517,7 @@ JS_DEFINE_NATIVE_FUNCTION(WindowObject::get_computed_style)
     auto* impl = TRY(impl_from(vm, global_object));
     auto* object = TRY(vm.argument(0).to_object(global_object));
     if (!is<ElementWrapper>(object))
-        return vm.throw_completion<JS::TypeError>(global_object, JS::ErrorType::NotAnObjectOfType, "DOM element");
+        return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAnObjectOfType, "DOM element");
 
     return wrap(global_object, impl->get_computed_style(static_cast<ElementWrapper*>(object)->impl()));
 }
@@ -592,7 +592,7 @@ JS_DEFINE_NATIVE_FUNCTION(WindowObject::scroll)
         if (!behavior_string_value.is_undefined())
             behavior_string = TRY(behavior_string_value.to_string(global_object));
         if (behavior_string != "smooth" && behavior_string != "auto")
-            return vm.throw_completion<JS::TypeError>(global_object, "Behavior is not one of 'smooth' or 'auto'");
+            return vm.throw_completion<JS::TypeError>("Behavior is not one of 'smooth' or 'auto'");
 
     } else if (vm.argument_count() >= 2) {
         // We ignore arguments 2+ in line with behavior of Chrome and Firefox
@@ -655,7 +655,7 @@ JS_DEFINE_NATIVE_FUNCTION(WindowObject::scroll_by)
     auto behavior_string_value = TRY(options->get("behavior"));
     auto behavior_string = behavior_string_value.is_undefined() ? "auto" : TRY(behavior_string_value.to_string(global_object));
     if (behavior_string != "smooth" && behavior_string != "auto")
-        return vm.throw_completion<JS::TypeError>(global_object, "Behavior is not one of 'smooth' or 'auto'");
+        return vm.throw_completion<JS::TypeError>("Behavior is not one of 'smooth' or 'auto'");
     ScrollBehavior behavior = (behavior_string == "smooth") ? ScrollBehavior::Smooth : ScrollBehavior::Auto;
 
     // FIXME: Spec wants us to call scroll(options) here.

Userland/Libraries/LibWeb/Bindings/WindowProxy.cpp

@@ -93,7 +93,7 @@ JS::ThrowCompletionOr<Optional<JS::PropertyDescriptor>> WindowProxy::internal_ge
                 return Optional<JS::PropertyDescriptor> {};
 
             // 2. Throw a "SecurityError" DOMException.
-            return vm.throw_completion<DOMExceptionWrapper>(global_object, DOM::SecurityError::create(String::formatted("Can't access property '{}' on cross-origin object", property_key)));
+            return vm.throw_completion<DOMExceptionWrapper>(DOM::SecurityError::create(String::formatted("Can't access property '{}' on cross-origin object", property_key)));
         }
 
         // 6. Return PropertyDescriptor{ [[Value]]: value, [[Writable]]: false, [[Enumerable]]: true, [[Configurable]]: true }.
@@ -146,7 +146,7 @@ JS::ThrowCompletionOr<bool> WindowProxy::internal_define_own_property(JS::Proper
     }
 
     // 3. Throw a "SecurityError" DOMException.
-    return vm.throw_completion<DOMExceptionWrapper>(global_object, DOM::SecurityError::create(String::formatted("Can't define property '{}' on cross-origin object", property_key)));
+    return vm.throw_completion<DOMExceptionWrapper>(DOM::SecurityError::create(String::formatted("Can't define property '{}' on cross-origin object", property_key)));
 }
 
 // 7.4.7 [[Get]] ( P, Receiver ), https://html.spec.whatwg.org/multipage/window-object.html#windowproxy-get
@@ -222,7 +222,7 @@ JS::ThrowCompletionOr<bool> WindowProxy::internal_delete(JS::PropertyKey const&
     }
 
     // 3. Throw a "SecurityError" DOMException.
-    return vm.throw_completion<DOMExceptionWrapper>(global_object, DOM::SecurityError::create(String::formatted("Can't delete property '{}' on cross-origin object", property_key)));
+    return vm.throw_completion<DOMExceptionWrapper>(DOM::SecurityError::create(String::formatted("Can't delete property '{}' on cross-origin object", property_key)));
 }
 
 // 7.4.10 [[OwnPropertyKeys]] ( ), https://html.spec.whatwg.org/multipage/window-object.html#windowproxy-ownpropertykeys