/* THIS FILE IS AUTOGENERATED FROM CustomElementRegistry.webidl BY Codegen.py - DO NOT EDIT */

#include <type_traits>
#include "AtomList.h"
#include "CustomElementRegistryBinding.h"
#include "MainThreadUtils.h"
#include "WrapperFactory.h"
#include "js/CallAndConstruct.h"
#include "js/Exception.h"
#include "js/MapAndSet.h"
#include "js/Object.h"
#include "js/PropertyAndElement.h"
#include "js/PropertyDescriptor.h"
#include "js/experimental/JitInfo.h"
#include "jsapi.h"
#include "mozilla/Atomics.h"
#include "mozilla/OwningNonNull.h"
#include "mozilla/ProfilerLabels.h"
#include "mozilla/UseCounter.h"
#include "mozilla/dom/BindingCallContext.h"
#include "mozilla/dom/BindingUtils.h"
#include "mozilla/dom/CustomElementRegistry.h"
#include "mozilla/dom/DOMJSClass.h"
#include "mozilla/dom/DocGroup.h"
#include "mozilla/dom/Document.h"
#include "mozilla/dom/File.h"
#include "mozilla/dom/FormData.h"
#include "mozilla/dom/HTMLFormElement.h"
#include "mozilla/dom/NonRefcountedDOMObject.h"
#include "mozilla/dom/Nullable.h"
#include "mozilla/dom/PrimitiveConversions.h"
#include "mozilla/dom/Promise.h"
#include "mozilla/dom/ScriptSettings.h"
#include "mozilla/dom/SimpleGlobalObject.h"
#include "mozilla/dom/ToJSValue.h"
#include "mozilla/dom/XrayExpandoClass.h"
#include "nsContentUtils.h"
#include "nsIContent.h"

namespace mozilla {

namespace dom {

namespace binding_detail {}; // Just to make sure it's known as a namespace
using namespace mozilla::dom::binding_detail;


namespace binding_detail {
constexpr nsLiteralCString EnumStrings<RestoreReason>::Values[2];
} // namespace binding_detail

bool
ToJSValue(JSContext* aCx, RestoreReason aArgument, JS::MutableHandle<JS::Value> aValue)
{
  MOZ_ASSERT(uint32_t(aArgument) < std::size(binding_detail::EnumStrings<RestoreReason>::Values));
  JSString* resultStr =
    JS_NewStringCopyN(aCx, binding_detail::EnumStrings<RestoreReason>::Values[uint32_t(aArgument)].BeginReading(),
                      binding_detail::EnumStrings<RestoreReason>::Values[uint32_t(aArgument)].Length());
  if (!resultStr) {
    return false;
  }
  aValue.setString(resultStr);
  return true;
}


void
ImplCycleCollectionTraverse(nsCycleCollectionTraversalCallback& aCallback, OwningCustomElementConstructorOrUndefined& aUnion, const char* aName, uint32_t aFlags)
{
  if (aUnion.IsCustomElementConstructor()) {
    ImplCycleCollectionTraverse(aCallback, aUnion.GetAsCustomElementConstructor(), "mCustomElementConstructor", aFlags);
  }
}


void
ImplCycleCollectionUnlink(OwningCustomElementConstructorOrUndefined& aUnion)
{
  aUnion.Uninit();
}


MOZ_CAN_RUN_SCRIPT void
CustomElementConstructor::Construct(JS::MutableHandle<JS::Value> aRetVal, ErrorResult& aRv, const char* aExecutionReason, ExceptionHandling aExceptionHandling, JS::Realm* aRealm)
{
  CallSetup s(this, aRv, "CustomElementConstructor", aExceptionHandling, aRealm);
  if (aRv.Failed()) {
    return;
  }
  MOZ_ASSERT(s.GetContext());
  BindingCallContext& cx = s.GetCallContext();

  JS::Rooted<JS::Value> rval(cx);

  JS::Rooted<JS::Value> constructor(cx, JS::ObjectValue(*mCallback));
  JS::Rooted<JSObject*> constructedObj(cx);
  if (!JS::Construct(cx, constructor,
                JS::HandleValueArray::empty(), &constructedObj)) {
    aRv.NoteJSContextException(cx);
    return;
  }
  rval.setObject(*constructedObj);
  JS::Rooted<JS::Value> rvalDecl(cx);
#ifdef __clang__
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wunreachable-code"
#pragma clang diagnostic ignored "-Wunreachable-code-return"
#endif // __clang__
  if ((false) && !CallerSubsumes(rval)) {
    cx.ThrowErrorMessage<MSG_PERMISSION_DENIED_TO_PASS_ARG>("return value of CustomElementConstructor");
    aRv.Throw(NS_ERROR_UNEXPECTED);
    return;
  }
#ifdef __clang__
#pragma clang diagnostic pop
#endif // __clang__
  rvalDecl = rval;
  aRetVal.set(rvalDecl);
}



bool
CustomElementConstructorOrUndefined::TrySetToCustomElementConstructor(BindingCallContext& cx, JS::Handle<JS::Value> value, bool& tryNext, bool passedToJSImpl)
{
  tryNext = false;
  { // scope for memberSlot
    RootedCallback<OwningNonNull<binding_detail::FastCustomElementConstructor>>& memberSlot = RawSetAsCustomElementConstructor(cx);
    if (JS::IsCallable(&value.toObject())) {
    { // scope for tempRoot and tempGlobalRoot if needed
      memberSlot = new binding_detail::FastCustomElementConstructor(&value.toObject(), JS::CurrentGlobalOrNull(cx));
    }
    } else {
      DestroyCustomElementConstructor();
      tryNext = true;
      return true;
    }
  }
  return true;
}

bool
CustomElementConstructorOrUndefined::TrySetToCustomElementConstructor(JSContext* cx_, JS::Handle<JS::Value> value, bool& tryNext, bool passedToJSImpl)
{
  BindingCallContext cx(cx_, nullptr);
  return TrySetToCustomElementConstructor(cx, value, tryNext, passedToJSImpl);
}









bool
CustomElementConstructorOrUndefined::Init(BindingCallContext& cx, JS::Handle<JS::Value> value, const char* sourceDescription, bool passedToJSImpl)
{
  MOZ_ASSERT(mType == eUninitialized);

  if (value.isUndefined()) {
    SetUndefined();
  } else {
    bool done = false, failed = false, tryNext;
    if (value.isObject()) {
      done = (failed = !TrySetToCustomElementConstructor(cx, value, tryNext, passedToJSImpl)) || !tryNext;
    }
    if (failed) {
      return false;
    }
    if (!done) {
      cx.ThrowErrorMessage<MSG_NOT_IN_UNION>(sourceDescription, "CustomElementConstructor");
      return false;
    }
  }
  return true;
}

bool
CustomElementConstructorOrUndefined::Init(JSContext* cx_, JS::Handle<JS::Value> value, const char* sourceDescription, bool passedToJSImpl)
{
  BindingCallContext cx(cx_, nullptr);
  return Init(cx, value, sourceDescription, passedToJSImpl);
}


bool
CustomElementConstructorOrUndefined::ToJSVal(JSContext* cx, JS::Handle<JSObject*> scopeObj, JS::MutableHandle<JS::Value> rval) const
{
  switch (mType) {
    case eUninitialized: {
      return false;
    }
    case eCustomElementConstructor: {
      rval.setObjectOrNull(GetCallbackFromCallbackObject(cx, mValue.mCustomElementConstructor.Value()));
      if (!MaybeWrapObjectValue(cx, rval)) {
        return false;
      }
      return true;
    }
    case eUndefined: {
      rval.setUndefined();
      return true;
    }
    default: {
      return false;
    }
  }
}



OwningCustomElementConstructorOrUndefined::OwningCustomElementConstructorOrUndefined(OwningCustomElementConstructorOrUndefined&& aOther)
  : mType(eUninitialized)
{
  switch (aOther.mType) {
    case eUninitialized: {
      MOZ_ASSERT(mType == eUninitialized,
                 "We need to destroy ourselves?");
      break;
    }
    case eCustomElementConstructor: {
      mType = eCustomElementConstructor;
      mValue.mCustomElementConstructor.SetValue(std::move(aOther.mValue.mCustomElementConstructor.Value()));
      break;
    }
    case eUndefined: {
      MOZ_ASSERT(mType == eUninitialized);
      mType = eUndefined;
      break;
    }
  }
}


bool
OwningCustomElementConstructorOrUndefined::TrySetToCustomElementConstructor(BindingCallContext& cx, JS::Handle<JS::Value> value, bool& tryNext, bool passedToJSImpl)
{
  tryNext = false;
  { // scope for memberSlot
    OwningNonNull<CustomElementConstructor>& memberSlot = RawSetAsCustomElementConstructor();
    if (JS::IsCallable(&value.toObject())) {
    { // scope for tempRoot and tempGlobalRoot if needed
      JS::Rooted<JSObject*> tempRoot(cx, &value.toObject());
      JS::Rooted<JSObject*> tempGlobalRoot(cx, JS::CurrentGlobalOrNull(cx));
      memberSlot = new CustomElementConstructor(cx, tempRoot, tempGlobalRoot, GetIncumbentGlobal());
    }
    } else {
      DestroyCustomElementConstructor();
      tryNext = true;
      return true;
    }
  }
  return true;
}

bool
OwningCustomElementConstructorOrUndefined::TrySetToCustomElementConstructor(JSContext* cx_, JS::Handle<JS::Value> value, bool& tryNext, bool passedToJSImpl)
{
  BindingCallContext cx(cx_, nullptr);
  return TrySetToCustomElementConstructor(cx, value, tryNext, passedToJSImpl);
}

[[nodiscard]] OwningNonNull<CustomElementConstructor>&
OwningCustomElementConstructorOrUndefined::RawSetAsCustomElementConstructor()
{
  if (mType == eCustomElementConstructor) {
    return mValue.mCustomElementConstructor.Value();
  }
  MOZ_ASSERT(mType == eUninitialized);
  mType = eCustomElementConstructor;
  return mValue.mCustomElementConstructor.SetValue();
}

[[nodiscard]] OwningNonNull<CustomElementConstructor>&
OwningCustomElementConstructorOrUndefined::SetAsCustomElementConstructor()
{
  if (mType == eCustomElementConstructor) {
    return mValue.mCustomElementConstructor.Value();
  }
  Uninit();
  mType = eCustomElementConstructor;
  return mValue.mCustomElementConstructor.SetValue();
}


void
OwningCustomElementConstructorOrUndefined::DestroyCustomElementConstructor()
{
  MOZ_RELEASE_ASSERT(IsCustomElementConstructor(), "Wrong type!");
  mValue.mCustomElementConstructor.Destroy();
  mType = eUninitialized;
}





bool
OwningCustomElementConstructorOrUndefined::Init(BindingCallContext& cx, JS::Handle<JS::Value> value, const char* sourceDescription, bool passedToJSImpl)
{
  MOZ_ASSERT(mType == eUninitialized);

  if (value.isUndefined()) {
    SetUndefined();
  } else {
    bool done = false, failed = false, tryNext;
    if (value.isObject()) {
      done = (failed = !TrySetToCustomElementConstructor(cx, value, tryNext, passedToJSImpl)) || !tryNext;
    }
    if (failed) {
      return false;
    }
    if (!done) {
      cx.ThrowErrorMessage<MSG_NOT_IN_UNION>(sourceDescription, "CustomElementConstructor");
      return false;
    }
  }
  return true;
}

bool
OwningCustomElementConstructorOrUndefined::Init(JSContext* cx_, JS::Handle<JS::Value> value, const char* sourceDescription, bool passedToJSImpl)
{
  BindingCallContext cx(cx_, nullptr);
  return Init(cx, value, sourceDescription, passedToJSImpl);
}

void
OwningCustomElementConstructorOrUndefined::Uninit()
{
  switch (mType) {
    case eUninitialized: {
      break;
    }
    case eCustomElementConstructor: {
      DestroyCustomElementConstructor();
      break;
    }
    case eUndefined: {
      break;
    }
  }
}

bool
OwningCustomElementConstructorOrUndefined::ToJSVal(JSContext* cx, JS::Handle<JSObject*> scopeObj, JS::MutableHandle<JS::Value> rval) const
{
  switch (mType) {
    case eUninitialized: {
      return false;
    }
    case eCustomElementConstructor: {
      rval.setObjectOrNull(GetCallbackFromCallbackObject(cx, mValue.mCustomElementConstructor.Value()));
      if (!MaybeWrapObjectValue(cx, rval)) {
        return false;
      }
      return true;
    }
    case eUndefined: {
      rval.setUndefined();
      return true;
    }
    default: {
      return false;
    }
  }
}

OwningCustomElementConstructorOrUndefined&
OwningCustomElementConstructorOrUndefined::operator=(OwningCustomElementConstructorOrUndefined&& aOther)
{
  this->~OwningCustomElementConstructorOrUndefined();
  new (this) OwningCustomElementConstructorOrUndefined (std::move(aOther));
  return *this;
}



void
CustomElementCreationCallback::Call(BindingCallContext& cx, JS::Handle<JS::Value> aThisVal, const nsAString& name, ErrorResult& aRv)
{
  JS::Rooted<JS::Value> rval(cx);
  JS::RootedVector<JS::Value> argv(cx);
  if (!argv.resize(1)) {
    // That threw an exception on the JSContext, and our CallSetup will do
    // the right thing with that.
    return;
  }
  unsigned argc = 1;

  do {
    if (!xpc::NonVoidStringToJsval(cx, name, argv[0])) {
      aRv.Throw(NS_ERROR_UNEXPECTED);
      return;
    }
    break;
  } while (false);

  JS::Rooted<JS::Value> callable(cx, JS::ObjectValue(*mCallback));
  if (!JS::Call(cx, aThisVal, callable,
                JS::HandleValueArray::subarray(argv, 0, argc), &rval)) {
    aRv.NoteJSContextException(cx);
    return;
  }
}




ElementDefinitionOptions::ElementDefinitionOptions()
{
  // Safe to pass a null context if we pass a null value
  Init(nullptr, JS::NullHandleValue);
}




bool
ElementDefinitionOptions::InitIds(JSContext* cx, ElementDefinitionOptionsAtoms* atomsCache)
{
  MOZ_ASSERT(reinterpret_cast<jsid*>(atomsCache)->isVoid());

  // Initialize these in reverse order so that any failure leaves the first one
  // uninitialized.
  if (!atomsCache->extends_id.init(cx, "extends")) {
    return false;
  }
  return true;
}

bool
ElementDefinitionOptions::Init(BindingCallContext& cx, JS::Handle<JS::Value> val, const char* sourceDescription, bool passedToJSImpl)
{
  // Passing a null JSContext is OK only if we're initing from null,
  // Since in that case we will not have to do any property gets
  // Also evaluate isNullOrUndefined in order to avoid false-positive
  // checkers by static analysis tools
  MOZ_ASSERT_IF(!cx, val.isNull() && val.isNullOrUndefined());
  ElementDefinitionOptionsAtoms* atomsCache = nullptr;
  if (cx) {
    atomsCache = GetAtomCache<ElementDefinitionOptionsAtoms>(cx);
    if (reinterpret_cast<jsid*>(atomsCache)->isVoid() &&
        !InitIds(cx, atomsCache)) {
      return false;
    }
  }

  if (!IsConvertibleToDictionary(val)) {
    return cx.ThrowErrorMessage<MSG_CONVERSION_ERROR>(sourceDescription, "dictionary");
  }

  bool isNull = val.isNullOrUndefined();
  // We only need these if !isNull, in which case we have |cx|.
  Maybe<JS::Rooted<JSObject *> > object;
  Maybe<JS::Rooted<JS::Value> > temp;
  if (!isNull) {
    MOZ_ASSERT(cx);
    object.emplace(cx, &val.toObject());
    temp.emplace(cx);
  }
  if (!isNull) {
    if (!JS_GetPropertyById(cx, *object, atomsCache->extends_id, temp.ptr())) {
      return false;
    }
  }
  if (!isNull && !temp->isUndefined()) {
    mExtends.Construct();
    if (!ConvertJSValueToString(cx, temp.ref(), eStringify, eStringify, (mExtends.Value()))) {
      return false;
    }
    mIsAnyMemberPresent = true;
  }
  return true;
}

bool
ElementDefinitionOptions::Init(JSContext* cx_, JS::Handle<JS::Value> val, const char* sourceDescription, bool passedToJSImpl)
{
  // We don't want to use sourceDescription for our context here;
  // that's not really what it's formatted for.
  BindingCallContext cx(cx_, nullptr);
  return Init(cx, val, sourceDescription, passedToJSImpl);
}

void
ElementDefinitionOptions::TraceDictionary(JSTracer* trc)
{
}

ElementDefinitionOptions&
ElementDefinitionOptions::operator=(const ElementDefinitionOptions& aOther)
{
  DictionaryBase::operator=(aOther);
  mExtends.Reset();
  if (aOther.mExtends.WasPassed()) {
    mExtends.Construct(aOther.mExtends.Value());
  }
  return *this;
}



FormAssociatedLifecycleCallbacks::FormAssociatedLifecycleCallbacks()
{
  // Safe to pass a null context if we pass a null value
  Init(nullptr, JS::NullHandleValue);
}



bool
FormAssociatedLifecycleCallbacks::InitIds(JSContext* cx, FormAssociatedLifecycleCallbacksAtoms* atomsCache)
{
  MOZ_ASSERT(reinterpret_cast<jsid*>(atomsCache)->isVoid());

  // Initialize these in reverse order so that any failure leaves the first one
  // uninitialized.
  if (!atomsCache->formStateRestoreCallback_id.init(cx, "formStateRestoreCallback") ||
      !atomsCache->formDisabledCallback_id.init(cx, "formDisabledCallback") ||
      !atomsCache->formResetCallback_id.init(cx, "formResetCallback") ||
      !atomsCache->formAssociatedCallback_id.init(cx, "formAssociatedCallback")) {
    return false;
  }
  return true;
}

bool
FormAssociatedLifecycleCallbacks::Init(BindingCallContext& cx, JS::Handle<JS::Value> val, const char* sourceDescription, bool passedToJSImpl)
{
  // Passing a null JSContext is OK only if we're initing from null,
  // Since in that case we will not have to do any property gets
  // Also evaluate isNullOrUndefined in order to avoid false-positive
  // checkers by static analysis tools
  MOZ_ASSERT_IF(!cx, val.isNull() && val.isNullOrUndefined());
  FormAssociatedLifecycleCallbacksAtoms* atomsCache = nullptr;
  if (cx) {
    atomsCache = GetAtomCache<FormAssociatedLifecycleCallbacksAtoms>(cx);
    if (reinterpret_cast<jsid*>(atomsCache)->isVoid() &&
        !InitIds(cx, atomsCache)) {
      return false;
    }
  }

  if (!IsConvertibleToDictionary(val)) {
    return cx.ThrowErrorMessage<MSG_CONVERSION_ERROR>(sourceDescription, "dictionary");
  }

  bool isNull = val.isNullOrUndefined();
  // We only need these if !isNull, in which case we have |cx|.
  Maybe<JS::Rooted<JSObject *> > object;
  Maybe<JS::Rooted<JS::Value> > temp;
  if (!isNull) {
    MOZ_ASSERT(cx);
    object.emplace(cx, &val.toObject());
    temp.emplace(cx);
  }
  if (!isNull) {
    if (!JS_GetPropertyById(cx, *object, atomsCache->formAssociatedCallback_id, temp.ptr())) {
      return false;
    }
  }
  if (!isNull && !temp->isUndefined()) {
    mFormAssociatedCallback.Construct();
    if (temp.ref().isObject()) {
      if (JS::IsCallable(&temp.ref().toObject())) {
      { // scope for tempRoot and tempGlobalRoot if needed
        JS::Rooted<JSObject*> tempRoot(cx, &temp.ref().toObject());
        JS::Rooted<JSObject*> tempGlobalRoot(cx, JS::CurrentGlobalOrNull(cx));
        (mFormAssociatedCallback.Value()) = new LifecycleFormAssociatedCallback(cx, tempRoot, tempGlobalRoot, GetIncumbentGlobal());
      }
      } else {
        cx.ThrowErrorMessage<MSG_NOT_CALLABLE>("'formAssociatedCallback' member of FormAssociatedLifecycleCallbacks");
        return false;
      }
    } else {
      cx.ThrowErrorMessage<MSG_NOT_OBJECT>("'formAssociatedCallback' member of FormAssociatedLifecycleCallbacks");
      return false;
    }
    mIsAnyMemberPresent = true;
  }

  if (!isNull) {
    if (!JS_GetPropertyById(cx, *object, atomsCache->formResetCallback_id, temp.ptr())) {
      return false;
    }
  }
  if (!isNull && !temp->isUndefined()) {
    mFormResetCallback.Construct();
    if (temp.ref().isObject()) {
      if (JS::IsCallable(&temp.ref().toObject())) {
      { // scope for tempRoot and tempGlobalRoot if needed
        JS::Rooted<JSObject*> tempRoot(cx, &temp.ref().toObject());
        JS::Rooted<JSObject*> tempGlobalRoot(cx, JS::CurrentGlobalOrNull(cx));
        (mFormResetCallback.Value()) = new LifecycleFormResetCallback(cx, tempRoot, tempGlobalRoot, GetIncumbentGlobal());
      }
      } else {
        cx.ThrowErrorMessage<MSG_NOT_CALLABLE>("'formResetCallback' member of FormAssociatedLifecycleCallbacks");
        return false;
      }
    } else {
      cx.ThrowErrorMessage<MSG_NOT_OBJECT>("'formResetCallback' member of FormAssociatedLifecycleCallbacks");
      return false;
    }
    mIsAnyMemberPresent = true;
  }

  if (!isNull) {
    if (!JS_GetPropertyById(cx, *object, atomsCache->formDisabledCallback_id, temp.ptr())) {
      return false;
    }
  }
  if (!isNull && !temp->isUndefined()) {
    mFormDisabledCallback.Construct();
    if (temp.ref().isObject()) {
      if (JS::IsCallable(&temp.ref().toObject())) {
      { // scope for tempRoot and tempGlobalRoot if needed
        JS::Rooted<JSObject*> tempRoot(cx, &temp.ref().toObject());
        JS::Rooted<JSObject*> tempGlobalRoot(cx, JS::CurrentGlobalOrNull(cx));
        (mFormDisabledCallback.Value()) = new LifecycleFormDisabledCallback(cx, tempRoot, tempGlobalRoot, GetIncumbentGlobal());
      }
      } else {
        cx.ThrowErrorMessage<MSG_NOT_CALLABLE>("'formDisabledCallback' member of FormAssociatedLifecycleCallbacks");
        return false;
      }
    } else {
      cx.ThrowErrorMessage<MSG_NOT_OBJECT>("'formDisabledCallback' member of FormAssociatedLifecycleCallbacks");
      return false;
    }
    mIsAnyMemberPresent = true;
  }

  if (!isNull) {
    if (!JS_GetPropertyById(cx, *object, atomsCache->formStateRestoreCallback_id, temp.ptr())) {
      return false;
    }
  }
  if (!isNull && !temp->isUndefined()) {
    mFormStateRestoreCallback.Construct();
    if (temp.ref().isObject()) {
      if (JS::IsCallable(&temp.ref().toObject())) {
      { // scope for tempRoot and tempGlobalRoot if needed
        JS::Rooted<JSObject*> tempRoot(cx, &temp.ref().toObject());
        JS::Rooted<JSObject*> tempGlobalRoot(cx, JS::CurrentGlobalOrNull(cx));
        (mFormStateRestoreCallback.Value()) = new LifecycleFormStateRestoreCallback(cx, tempRoot, tempGlobalRoot, GetIncumbentGlobal());
      }
      } else {
        cx.ThrowErrorMessage<MSG_NOT_CALLABLE>("'formStateRestoreCallback' member of FormAssociatedLifecycleCallbacks");
        return false;
      }
    } else {
      cx.ThrowErrorMessage<MSG_NOT_OBJECT>("'formStateRestoreCallback' member of FormAssociatedLifecycleCallbacks");
      return false;
    }
    mIsAnyMemberPresent = true;
  }
  return true;
}

bool
FormAssociatedLifecycleCallbacks::Init(JSContext* cx_, JS::Handle<JS::Value> val, const char* sourceDescription, bool passedToJSImpl)
{
  // We don't want to use sourceDescription for our context here;
  // that's not really what it's formatted for.
  BindingCallContext cx(cx_, nullptr);
  return Init(cx, val, sourceDescription, passedToJSImpl);
}

void
FormAssociatedLifecycleCallbacks::TraceDictionary(JSTracer* trc)
{
}




void
LifecycleAdoptedCallback::Call(BindingCallContext& cx, JS::Handle<JS::Value> aThisVal, Document* oldDocument, Document* newDocment, ErrorResult& aRv)
{
  JS::Rooted<JS::Value> rval(cx);
  JS::RootedVector<JS::Value> argv(cx);
  if (!argv.resize(2)) {
    // That threw an exception on the JSContext, and our CallSetup will do
    // the right thing with that.
    return;
  }
  unsigned argc = 2;

  do {
    if (!newDocment) {
      argv[1].setNull();
      break;
    }
    if (!GetOrCreateDOMReflector(cx, newDocment, argv[1])) {
      MOZ_ASSERT(JS_IsExceptionPending(cx));
      aRv.Throw(NS_ERROR_UNEXPECTED);
      return;
    }
    break;
  } while (false);

  do {
    if (!oldDocument) {
      argv[0].setNull();
      break;
    }
    if (!GetOrCreateDOMReflector(cx, oldDocument, argv[0])) {
      MOZ_ASSERT(JS_IsExceptionPending(cx));
      aRv.Throw(NS_ERROR_UNEXPECTED);
      return;
    }
    break;
  } while (false);

  JS::Rooted<JS::Value> callable(cx, JS::ObjectValue(*mCallback));
  if (!JS::Call(cx, aThisVal, callable,
                JS::HandleValueArray::subarray(argv, 0, argc), &rval)) {
    aRv.NoteJSContextException(cx);
    return;
  }
}



void
LifecycleAttributeChangedCallback::Call(BindingCallContext& cx, JS::Handle<JS::Value> aThisVal, const nsAString& attrName, const nsAString& oldValue, const nsAString& newValue, const nsAString& namespaceURI, ErrorResult& aRv)
{
  JS::Rooted<JS::Value> rval(cx);
  JS::RootedVector<JS::Value> argv(cx);
  if (!argv.resize(4)) {
    // That threw an exception on the JSContext, and our CallSetup will do
    // the right thing with that.
    return;
  }
  unsigned argc = 4;

  do {
    if (!xpc::StringToJsval(cx, namespaceURI, argv[3])) {
      aRv.Throw(NS_ERROR_UNEXPECTED);
      return;
    }
    break;
  } while (false);

  do {
    if (!xpc::StringToJsval(cx, newValue, argv[2])) {
      aRv.Throw(NS_ERROR_UNEXPECTED);
      return;
    }
    break;
  } while (false);

  do {
    if (!xpc::StringToJsval(cx, oldValue, argv[1])) {
      aRv.Throw(NS_ERROR_UNEXPECTED);
      return;
    }
    break;
  } while (false);

  do {
    if (!xpc::NonVoidStringToJsval(cx, attrName, argv[0])) {
      aRv.Throw(NS_ERROR_UNEXPECTED);
      return;
    }
    break;
  } while (false);

  JS::Rooted<JS::Value> callable(cx, JS::ObjectValue(*mCallback));
  if (!JS::Call(cx, aThisVal, callable,
                JS::HandleValueArray::subarray(argv, 0, argc), &rval)) {
    aRv.NoteJSContextException(cx);
    return;
  }
}




LifecycleCallbacks::LifecycleCallbacks()
{
  // Safe to pass a null context if we pass a null value
  Init(nullptr, JS::NullHandleValue);
}



bool
LifecycleCallbacks::InitIds(JSContext* cx, LifecycleCallbacksAtoms* atomsCache)
{
  MOZ_ASSERT(reinterpret_cast<jsid*>(atomsCache)->isVoid());

  // Initialize these in reverse order so that any failure leaves the first one
  // uninitialized.
  if (!atomsCache->getCustomInterfaceCallback_id.init(cx, "getCustomInterfaceCallback") ||
      !atomsCache->attributeChangedCallback_id.init(cx, "attributeChangedCallback") ||
      !atomsCache->adoptedCallback_id.init(cx, "adoptedCallback") ||
      !atomsCache->connectedMoveCallback_id.init(cx, "connectedMoveCallback") ||
      !atomsCache->disconnectedCallback_id.init(cx, "disconnectedCallback") ||
      !atomsCache->connectedCallback_id.init(cx, "connectedCallback")) {
    return false;
  }
  return true;
}

bool
LifecycleCallbacks::Init(BindingCallContext& cx, JS::Handle<JS::Value> val, const char* sourceDescription, bool passedToJSImpl)
{
  // Passing a null JSContext is OK only if we're initing from null,
  // Since in that case we will not have to do any property gets
  // Also evaluate isNullOrUndefined in order to avoid false-positive
  // checkers by static analysis tools
  MOZ_ASSERT_IF(!cx, val.isNull() && val.isNullOrUndefined());
  LifecycleCallbacksAtoms* atomsCache = nullptr;
  if (cx) {
    atomsCache = GetAtomCache<LifecycleCallbacksAtoms>(cx);
    if (reinterpret_cast<jsid*>(atomsCache)->isVoid() &&
        !InitIds(cx, atomsCache)) {
      return false;
    }
  }

  if (!IsConvertibleToDictionary(val)) {
    return cx.ThrowErrorMessage<MSG_CONVERSION_ERROR>(sourceDescription, "dictionary");
  }

  bool isNull = val.isNullOrUndefined();
  // We only need these if !isNull, in which case we have |cx|.
  Maybe<JS::Rooted<JSObject *> > object;
  Maybe<JS::Rooted<JS::Value> > temp;
  if (!isNull) {
    MOZ_ASSERT(cx);
    object.emplace(cx, &val.toObject());
    temp.emplace(cx);
  }
  if (!isNull) {
    if (!JS_GetPropertyById(cx, *object, atomsCache->connectedCallback_id, temp.ptr())) {
      return false;
    }
  }
  if (!isNull && !temp->isUndefined()) {
    mConnectedCallback.Construct();
    if (temp.ref().isObject()) {
      if (JS::IsCallable(&temp.ref().toObject())) {
      { // scope for tempRoot and tempGlobalRoot if needed
        JS::Rooted<JSObject*> tempRoot(cx, &temp.ref().toObject());
        JS::Rooted<JSObject*> tempGlobalRoot(cx, JS::CurrentGlobalOrNull(cx));
        (mConnectedCallback.Value()) = new LifecycleConnectedCallback(cx, tempRoot, tempGlobalRoot, GetIncumbentGlobal());
      }
      } else {
        cx.ThrowErrorMessage<MSG_NOT_CALLABLE>("'connectedCallback' member of LifecycleCallbacks");
        return false;
      }
    } else {
      cx.ThrowErrorMessage<MSG_NOT_OBJECT>("'connectedCallback' member of LifecycleCallbacks");
      return false;
    }
    mIsAnyMemberPresent = true;
  }

  if (!isNull) {
    if (!JS_GetPropertyById(cx, *object, atomsCache->disconnectedCallback_id, temp.ptr())) {
      return false;
    }
  }
  if (!isNull && !temp->isUndefined()) {
    mDisconnectedCallback.Construct();
    if (temp.ref().isObject()) {
      if (JS::IsCallable(&temp.ref().toObject())) {
      { // scope for tempRoot and tempGlobalRoot if needed
        JS::Rooted<JSObject*> tempRoot(cx, &temp.ref().toObject());
        JS::Rooted<JSObject*> tempGlobalRoot(cx, JS::CurrentGlobalOrNull(cx));
        (mDisconnectedCallback.Value()) = new LifecycleDisconnectedCallback(cx, tempRoot, tempGlobalRoot, GetIncumbentGlobal());
      }
      } else {
        cx.ThrowErrorMessage<MSG_NOT_CALLABLE>("'disconnectedCallback' member of LifecycleCallbacks");
        return false;
      }
    } else {
      cx.ThrowErrorMessage<MSG_NOT_OBJECT>("'disconnectedCallback' member of LifecycleCallbacks");
      return false;
    }
    mIsAnyMemberPresent = true;
  }

  if (!isNull) {
    if (!JS_GetPropertyById(cx, *object, atomsCache->connectedMoveCallback_id, temp.ptr())) {
      return false;
    }
  }
  if (!isNull && !temp->isUndefined()) {
    mConnectedMoveCallback.Construct();
    if (temp.ref().isObject()) {
      if (JS::IsCallable(&temp.ref().toObject())) {
      { // scope for tempRoot and tempGlobalRoot if needed
        JS::Rooted<JSObject*> tempRoot(cx, &temp.ref().toObject());
        JS::Rooted<JSObject*> tempGlobalRoot(cx, JS::CurrentGlobalOrNull(cx));
        (mConnectedMoveCallback.Value()) = new LifecycleConnectedMoveCallback(cx, tempRoot, tempGlobalRoot, GetIncumbentGlobal());
      }
      } else {
        cx.ThrowErrorMessage<MSG_NOT_CALLABLE>("'connectedMoveCallback' member of LifecycleCallbacks");
        return false;
      }
    } else {
      cx.ThrowErrorMessage<MSG_NOT_OBJECT>("'connectedMoveCallback' member of LifecycleCallbacks");
      return false;
    }
    mIsAnyMemberPresent = true;
  }

  if (!isNull) {
    if (!JS_GetPropertyById(cx, *object, atomsCache->adoptedCallback_id, temp.ptr())) {
      return false;
    }
  }
  if (!isNull && !temp->isUndefined()) {
    mAdoptedCallback.Construct();
    if (temp.ref().isObject()) {
      if (JS::IsCallable(&temp.ref().toObject())) {
      { // scope for tempRoot and tempGlobalRoot if needed
        JS::Rooted<JSObject*> tempRoot(cx, &temp.ref().toObject());
        JS::Rooted<JSObject*> tempGlobalRoot(cx, JS::CurrentGlobalOrNull(cx));
        (mAdoptedCallback.Value()) = new LifecycleAdoptedCallback(cx, tempRoot, tempGlobalRoot, GetIncumbentGlobal());
      }
      } else {
        cx.ThrowErrorMessage<MSG_NOT_CALLABLE>("'adoptedCallback' member of LifecycleCallbacks");
        return false;
      }
    } else {
      cx.ThrowErrorMessage<MSG_NOT_OBJECT>("'adoptedCallback' member of LifecycleCallbacks");
      return false;
    }
    mIsAnyMemberPresent = true;
  }

  if (!isNull) {
    if (!JS_GetPropertyById(cx, *object, atomsCache->attributeChangedCallback_id, temp.ptr())) {
      return false;
    }
  }
  if (!isNull && !temp->isUndefined()) {
    mAttributeChangedCallback.Construct();
    if (temp.ref().isObject()) {
      if (JS::IsCallable(&temp.ref().toObject())) {
      { // scope for tempRoot and tempGlobalRoot if needed
        JS::Rooted<JSObject*> tempRoot(cx, &temp.ref().toObject());
        JS::Rooted<JSObject*> tempGlobalRoot(cx, JS::CurrentGlobalOrNull(cx));
        (mAttributeChangedCallback.Value()) = new LifecycleAttributeChangedCallback(cx, tempRoot, tempGlobalRoot, GetIncumbentGlobal());
      }
      } else {
        cx.ThrowErrorMessage<MSG_NOT_CALLABLE>("'attributeChangedCallback' member of LifecycleCallbacks");
        return false;
      }
    } else {
      cx.ThrowErrorMessage<MSG_NOT_OBJECT>("'attributeChangedCallback' member of LifecycleCallbacks");
      return false;
    }
    mIsAnyMemberPresent = true;
  }

  if (!isNull) {
    if (nsContentUtils::ThreadsafeIsSystemCaller(cx)) {
      if (!JS_GetPropertyById(cx, *object, atomsCache->getCustomInterfaceCallback_id, temp.ptr())) {
        return false;
      }
    } else {
      temp->setUndefined();
    }
  }
  if (!isNull && !temp->isUndefined()) {
    mGetCustomInterfaceCallback.Construct();
    if (temp.ref().isObject()) {
      if (JS::IsCallable(&temp.ref().toObject())) {
      { // scope for tempRoot and tempGlobalRoot if needed
        JS::Rooted<JSObject*> tempRoot(cx, &temp.ref().toObject());
        JS::Rooted<JSObject*> tempGlobalRoot(cx, JS::CurrentGlobalOrNull(cx));
        (mGetCustomInterfaceCallback.Value()) = new LifecycleGetCustomInterfaceCallback(cx, tempRoot, tempGlobalRoot, GetIncumbentGlobal());
      }
      } else {
        cx.ThrowErrorMessage<MSG_NOT_CALLABLE>("'getCustomInterfaceCallback' member of LifecycleCallbacks");
        return false;
      }
    } else {
      cx.ThrowErrorMessage<MSG_NOT_OBJECT>("'getCustomInterfaceCallback' member of LifecycleCallbacks");
      return false;
    }
    mIsAnyMemberPresent = true;
  }
  return true;
}

bool
LifecycleCallbacks::Init(JSContext* cx_, JS::Handle<JS::Value> val, const char* sourceDescription, bool passedToJSImpl)
{
  // We don't want to use sourceDescription for our context here;
  // that's not really what it's formatted for.
  BindingCallContext cx(cx_, nullptr);
  return Init(cx, val, sourceDescription, passedToJSImpl);
}

void
LifecycleCallbacks::TraceDictionary(JSTracer* trc)
{
}




void
LifecycleConnectedCallback::Call(BindingCallContext& cx, JS::Handle<JS::Value> aThisVal, ErrorResult& aRv)
{
  JS::Rooted<JS::Value> rval(cx);

  JS::Rooted<JS::Value> callable(cx, JS::ObjectValue(*mCallback));
  if (!JS::Call(cx, aThisVal, callable,
                JS::HandleValueArray::empty(), &rval)) {
    aRv.NoteJSContextException(cx);
    return;
  }
}



void
LifecycleConnectedMoveCallback::Call(BindingCallContext& cx, JS::Handle<JS::Value> aThisVal, ErrorResult& aRv)
{
  JS::Rooted<JS::Value> rval(cx);

  JS::Rooted<JS::Value> callable(cx, JS::ObjectValue(*mCallback));
  if (!JS::Call(cx, aThisVal, callable,
                JS::HandleValueArray::empty(), &rval)) {
    aRv.NoteJSContextException(cx);
    return;
  }
}



void
LifecycleDisconnectedCallback::Call(BindingCallContext& cx, JS::Handle<JS::Value> aThisVal, ErrorResult& aRv)
{
  JS::Rooted<JS::Value> rval(cx);

  JS::Rooted<JS::Value> callable(cx, JS::ObjectValue(*mCallback));
  if (!JS::Call(cx, aThisVal, callable,
                JS::HandleValueArray::empty(), &rval)) {
    aRv.NoteJSContextException(cx);
    return;
  }
}



void
LifecycleFormAssociatedCallback::Call(BindingCallContext& cx, JS::Handle<JS::Value> aThisVal, HTMLFormElement* form, ErrorResult& aRv)
{
  JS::Rooted<JS::Value> rval(cx);
  JS::RootedVector<JS::Value> argv(cx);
  if (!argv.resize(1)) {
    // That threw an exception on the JSContext, and our CallSetup will do
    // the right thing with that.
    return;
  }
  unsigned argc = 1;

  do {
    if (!form) {
      argv[0].setNull();
      break;
    }
    if (!GetOrCreateDOMReflector(cx, form, argv[0])) {
      MOZ_ASSERT(JS_IsExceptionPending(cx));
      aRv.Throw(NS_ERROR_UNEXPECTED);
      return;
    }
    break;
  } while (false);

  JS::Rooted<JS::Value> callable(cx, JS::ObjectValue(*mCallback));
  if (!JS::Call(cx, aThisVal, callable,
                JS::HandleValueArray::subarray(argv, 0, argc), &rval)) {
    aRv.NoteJSContextException(cx);
    return;
  }
}



void
LifecycleFormDisabledCallback::Call(BindingCallContext& cx, JS::Handle<JS::Value> aThisVal, bool disabled, ErrorResult& aRv)
{
  JS::Rooted<JS::Value> rval(cx);
  JS::RootedVector<JS::Value> argv(cx);
  if (!argv.resize(1)) {
    // That threw an exception on the JSContext, and our CallSetup will do
    // the right thing with that.
    return;
  }
  unsigned argc = 1;

  do {
    argv[0].setBoolean(disabled);
    break;
  } while (false);

  JS::Rooted<JS::Value> callable(cx, JS::ObjectValue(*mCallback));
  if (!JS::Call(cx, aThisVal, callable,
                JS::HandleValueArray::subarray(argv, 0, argc), &rval)) {
    aRv.NoteJSContextException(cx);
    return;
  }
}



void
LifecycleFormResetCallback::Call(BindingCallContext& cx, JS::Handle<JS::Value> aThisVal, ErrorResult& aRv)
{
  JS::Rooted<JS::Value> rval(cx);

  JS::Rooted<JS::Value> callable(cx, JS::ObjectValue(*mCallback));
  if (!JS::Call(cx, aThisVal, callable,
                JS::HandleValueArray::empty(), &rval)) {
    aRv.NoteJSContextException(cx);
    return;
  }
}



void
LifecycleFormStateRestoreCallback::Call(BindingCallContext& cx, JS::Handle<JS::Value> aThisVal, const Nullable<FileOrUSVStringOrFormData>& state, RestoreReason reason, ErrorResult& aRv)
{
  JS::Rooted<JS::Value> rval(cx);
  JS::RootedVector<JS::Value> argv(cx);
  if (!argv.resize(2)) {
    // That threw an exception on the JSContext, and our CallSetup will do
    // the right thing with that.
    return;
  }
  unsigned argc = 2;

  do {
    if (!ToJSValue(cx, reason, argv[1])) {
      aRv.Throw(NS_ERROR_UNEXPECTED);
      return;
    }
    break;
  } while (false);

  do {
    JS::Rooted<JSObject*> callbackObj(cx, CallbackKnownNotGray());
    if (state.IsNull()) {
      argv[0].setNull();
      break;
    }
    if (!state.Value().ToJSVal(cx, callbackObj, argv[0])) {
      aRv.Throw(NS_ERROR_UNEXPECTED);
      return;
    }
    break;
  } while (false);

  JS::Rooted<JS::Value> callable(cx, JS::ObjectValue(*mCallback));
  if (!JS::Call(cx, aThisVal, callable,
                JS::HandleValueArray::subarray(argv, 0, argc), &rval)) {
    aRv.NoteJSContextException(cx);
    return;
  }
}



void
LifecycleGetCustomInterfaceCallback::Call(BindingCallContext& cx, JS::Handle<JS::Value> aThisVal, JS::Handle<JS::Value> iid, JS::MutableHandle<JSObject*> aRetVal, ErrorResult& aRv)
{
  JS::Rooted<JS::Value> rval(cx);
  JS::RootedVector<JS::Value> argv(cx);
  if (!argv.resize(1)) {
    // That threw an exception on the JSContext, and our CallSetup will do
    // the right thing with that.
    return;
  }
  unsigned argc = 1;

  do {
    JS::ExposeValueToActiveJS(iid);
    argv[0].set(iid);
    if (!MaybeWrapValue(cx, argv[0])) {
      aRv.Throw(NS_ERROR_UNEXPECTED);
      return;
    }
    break;
  } while (false);

  JS::Rooted<JS::Value> callable(cx, JS::ObjectValue(*mCallback));
  if (!JS::Call(cx, aThisVal, callable,
                JS::HandleValueArray::subarray(argv, 0, argc), &rval)) {
    aRv.NoteJSContextException(cx);
    return;
  }
  JS::Rooted<JSObject*> rvalDecl(cx);
  if (rval.isObject()) {
#ifdef __clang__
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wunreachable-code"
#pragma clang diagnostic ignored "-Wunreachable-code-return"
#endif // __clang__
    if ((false) && !CallerSubsumes(rval)) {
      cx.ThrowErrorMessage<MSG_PERMISSION_DENIED_TO_PASS_ARG>("return value of LifecycleGetCustomInterfaceCallback");
      aRv.Throw(NS_ERROR_UNEXPECTED);
      return;
    }
#ifdef __clang__
#pragma clang diagnostic pop
#endif // __clang__
    rvalDecl = &rval.toObject();
  } else if (rval.isNullOrUndefined()) {
    rvalDecl = nullptr;
  } else {
    cx.ThrowErrorMessage<MSG_NOT_OBJECT>("Return value of LifecycleGetCustomInterfaceCallback");
    aRv.Throw(NS_ERROR_UNEXPECTED);
    return;
  }
  aRetVal.set(rvalDecl);
}



namespace CustomElementRegistry_Binding {

MOZ_CAN_RUN_SCRIPT static bool
define(JSContext* cx_, JS::Handle<JSObject*> obj, void* void_self, const JSJitMethodCallArgs& args)
{
  BindingCallContext cx(cx_, "CustomElementRegistry.define");
  AUTO_PROFILER_LABEL_DYNAMIC_FAST(
    "CustomElementRegistry", "define", DOM, cx,
    uint32_t(js::ProfilingStackFrame::Flags::STRING_TEMPLATE_METHOD) |
    uint32_t(js::ProfilingStackFrame::Flags::RELEVANT_FOR_JS));

  auto* self = static_cast<mozilla::dom::CustomElementRegistry*>(void_self);
  if (!args.requireAtLeast(cx, "CustomElementRegistry.define", 2)) {
    return false;
  }
  binding_detail::FakeString<char16_t> arg0;
  if (!ConvertJSValueToString(cx, args[0], eStringify, eStringify, arg0)) {
    return false;
  }
  RootedCallback<OwningNonNull<binding_detail::FastCustomElementConstructor>> arg1(cx);
  if (args[1].isObject()) {
    if (JS::IsCallable(&args[1].toObject())) {
    { // scope for tempRoot and tempGlobalRoot if needed
      arg1 = new binding_detail::FastCustomElementConstructor(&args[1].toObject(), JS::CurrentGlobalOrNull(cx));
    }
    } else {
      cx.ThrowErrorMessage<MSG_NOT_CALLABLE>("Argument 2");
      return false;
    }
  } else {
    cx.ThrowErrorMessage<MSG_NOT_OBJECT>("Argument 2");
    return false;
  }
  binding_detail::FastElementDefinitionOptions arg2;
  if (!arg2.Init(cx, (args.hasDefined(2)) ? args[2] : JS::NullHandleValue, "Argument 3", false)) {
    return false;
  }
  Maybe<AutoCEReaction> ceReaction;
  DocGroup* docGroup = self->GetDocGroup();
  if (docGroup) {
    ceReaction.emplace(docGroup->CustomElementReactionsStack(), cx);
  }
  FastErrorResult rv;
  // NOTE: This assert does NOT call the function.
  static_assert(std::is_void_v<decltype(MOZ_KnownLive(self)->Define(cx, NonNullHelper(Constify(arg0)), MOZ_KnownLive(NonNullHelper(arg1)), Constify(arg2), rv))>, "Should be returning void here");
  MOZ_KnownLive(self)->Define(cx, NonNullHelper(Constify(arg0)), MOZ_KnownLive(NonNullHelper(arg1)), Constify(arg2), rv);
  if (MOZ_UNLIKELY(rv.MaybeSetPendingException(cx, "CustomElementRegistry.define"))) {
    return false;
  }
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  SetUseCounter(obj, eUseCounter_CustomElementRegistry_define);
  args.rval().setUndefined();
  return true;
}

static const JSJitInfo define_methodinfo = {
  { (JSJitGetterOp)define },
  { prototypes::id::CustomElementRegistry },
  { PrototypeTraits<prototypes::id::CustomElementRegistry>::Depth },
  JSJitInfo::Method,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_UNDEFINED,  /* returnType.  Not relevant for setters. */
  false,  /* isInfallible. False in setters. */
  false,  /* isMovable.  Not relevant for setters. */
  false, /* isEliminatable.  Not relevant for setters. */
  false, /* isAlwaysInSlot.  Only relevant for getters. */
  false, /* isLazilyCachedInSlot.  Only relevant for getters. */
  false,  /* isTypedMethod.  Only relevant for methods. */
  0   /* Reserved slot index, if we're stored in a slot, else 0. */
};

MOZ_CAN_RUN_SCRIPT static bool
setElementCreationCallback(JSContext* cx_, JS::Handle<JSObject*> obj, void* void_self, const JSJitMethodCallArgs& args)
{
  BindingCallContext cx(cx_, "CustomElementRegistry.setElementCreationCallback");
  AUTO_PROFILER_LABEL_DYNAMIC_FAST(
    "CustomElementRegistry", "setElementCreationCallback", DOM, cx,
    uint32_t(js::ProfilingStackFrame::Flags::STRING_TEMPLATE_METHOD) |
    uint32_t(js::ProfilingStackFrame::Flags::RELEVANT_FOR_JS));

  auto* self = static_cast<mozilla::dom::CustomElementRegistry*>(void_self);
  if (!args.requireAtLeast(cx, "CustomElementRegistry.setElementCreationCallback", 2)) {
    return false;
  }
  binding_detail::FakeString<char16_t> arg0;
  if (!ConvertJSValueToString(cx, args[0], eStringify, eStringify, arg0)) {
    return false;
  }
  RootedCallback<OwningNonNull<binding_detail::FastCustomElementCreationCallback>> arg1(cx);
  if (args[1].isObject()) {
    if (JS::IsCallable(&args[1].toObject())) {
    { // scope for tempRoot and tempGlobalRoot if needed
      arg1 = new binding_detail::FastCustomElementCreationCallback(&args[1].toObject(), JS::CurrentGlobalOrNull(cx));
    }
    } else {
      cx.ThrowErrorMessage<MSG_NOT_CALLABLE>("Argument 2");
      return false;
    }
  } else {
    cx.ThrowErrorMessage<MSG_NOT_OBJECT>("Argument 2");
    return false;
  }
  FastErrorResult rv;
  // NOTE: This assert does NOT call the function.
  static_assert(std::is_void_v<decltype(MOZ_KnownLive(self)->SetElementCreationCallback(NonNullHelper(Constify(arg0)), MOZ_KnownLive(NonNullHelper(arg1)), rv))>, "Should be returning void here");
  MOZ_KnownLive(self)->SetElementCreationCallback(NonNullHelper(Constify(arg0)), MOZ_KnownLive(NonNullHelper(arg1)), rv);
  if (MOZ_UNLIKELY(rv.MaybeSetPendingException(cx, "CustomElementRegistry.setElementCreationCallback"))) {
    return false;
  }
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  args.rval().setUndefined();
  return true;
}

static const JSJitInfo setElementCreationCallback_methodinfo = {
  { (JSJitGetterOp)setElementCreationCallback },
  { prototypes::id::CustomElementRegistry },
  { PrototypeTraits<prototypes::id::CustomElementRegistry>::Depth },
  JSJitInfo::Method,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_UNDEFINED,  /* returnType.  Not relevant for setters. */
  false,  /* isInfallible. False in setters. */
  false,  /* isMovable.  Not relevant for setters. */
  false, /* isEliminatable.  Not relevant for setters. */
  false, /* isAlwaysInSlot.  Only relevant for getters. */
  false, /* isLazilyCachedInSlot.  Only relevant for getters. */
  false,  /* isTypedMethod.  Only relevant for methods. */
  0   /* Reserved slot index, if we're stored in a slot, else 0. */
};

MOZ_CAN_RUN_SCRIPT static bool
get(JSContext* cx, JS::Handle<JSObject*> obj, void* void_self, const JSJitMethodCallArgs& args)
{
  AUTO_PROFILER_LABEL_DYNAMIC_FAST(
    "CustomElementRegistry", "get", DOM, cx,
    uint32_t(js::ProfilingStackFrame::Flags::STRING_TEMPLATE_METHOD) |
    uint32_t(js::ProfilingStackFrame::Flags::RELEVANT_FOR_JS));

  auto* self = static_cast<mozilla::dom::CustomElementRegistry*>(void_self);
  if (!args.requireAtLeast(cx, "CustomElementRegistry.get", 1)) {
    return false;
  }
  binding_detail::FakeString<char16_t> arg0;
  if (!ConvertJSValueToString(cx, args[0], eStringify, eStringify, arg0)) {
    return false;
  }
  OwningCustomElementConstructorOrUndefined result;
  // NOTE: This assert does NOT call the function.
  static_assert(std::is_void_v<decltype(MOZ_KnownLive(self)->Get(NonNullHelper(Constify(arg0)), result))>, "Should be returning void here");
  MOZ_KnownLive(self)->Get(NonNullHelper(Constify(arg0)), result);
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  if (!result.ToJSVal(cx, obj, args.rval())) {
    return false;
  }
  return true;
}

static const JSJitInfo get_methodinfo = {
  { (JSJitGetterOp)get },
  { prototypes::id::CustomElementRegistry },
  { PrototypeTraits<prototypes::id::CustomElementRegistry>::Depth },
  JSJitInfo::Method,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_UNKNOWN,  /* returnType.  Not relevant for setters. */
  false,  /* isInfallible. False in setters. */
  false,  /* isMovable.  Not relevant for setters. */
  false, /* isEliminatable.  Not relevant for setters. */
  false, /* isAlwaysInSlot.  Only relevant for getters. */
  false, /* isLazilyCachedInSlot.  Only relevant for getters. */
  false,  /* isTypedMethod.  Only relevant for methods. */
  0   /* Reserved slot index, if we're stored in a slot, else 0. */
};

MOZ_CAN_RUN_SCRIPT static bool
getName(JSContext* cx_, JS::Handle<JSObject*> obj, void* void_self, const JSJitMethodCallArgs& args)
{
  BindingCallContext cx(cx_, "CustomElementRegistry.getName");
  AUTO_PROFILER_LABEL_DYNAMIC_FAST(
    "CustomElementRegistry", "getName", DOM, cx,
    uint32_t(js::ProfilingStackFrame::Flags::STRING_TEMPLATE_METHOD) |
    uint32_t(js::ProfilingStackFrame::Flags::RELEVANT_FOR_JS));

  auto* self = static_cast<mozilla::dom::CustomElementRegistry*>(void_self);
  if (!args.requireAtLeast(cx, "CustomElementRegistry.getName", 1)) {
    return false;
  }
  RootedCallback<OwningNonNull<binding_detail::FastCustomElementConstructor>> arg0(cx);
  if (args[0].isObject()) {
    if (JS::IsCallable(&args[0].toObject())) {
    { // scope for tempRoot and tempGlobalRoot if needed
      arg0 = new binding_detail::FastCustomElementConstructor(&args[0].toObject(), JS::CurrentGlobalOrNull(cx));
    }
    } else {
      cx.ThrowErrorMessage<MSG_NOT_CALLABLE>("Argument 1");
      return false;
    }
  } else {
    cx.ThrowErrorMessage<MSG_NOT_OBJECT>("Argument 1");
    return false;
  }
  DOMString result;
  // NOTE: This assert does NOT call the function.
  static_assert(std::is_void_v<decltype(MOZ_KnownLive(self)->GetName(cx, MOZ_KnownLive(NonNullHelper(arg0)), result))>, "Should be returning void here");
  MOZ_KnownLive(self)->GetName(cx, MOZ_KnownLive(NonNullHelper(arg0)), result);
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  if (!xpc::StringToJsval(cx, result, args.rval())) {
    return false;
  }
  return true;
}

static const JSJitInfo getName_methodinfo = {
  { (JSJitGetterOp)getName },
  { prototypes::id::CustomElementRegistry },
  { PrototypeTraits<prototypes::id::CustomElementRegistry>::Depth },
  JSJitInfo::Method,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_UNKNOWN,  /* returnType.  Not relevant for setters. */
  false,  /* isInfallible. False in setters. */
  false,  /* isMovable.  Not relevant for setters. */
  false, /* isEliminatable.  Not relevant for setters. */
  false, /* isAlwaysInSlot.  Only relevant for getters. */
  false, /* isLazilyCachedInSlot.  Only relevant for getters. */
  false,  /* isTypedMethod.  Only relevant for methods. */
  0   /* Reserved slot index, if we're stored in a slot, else 0. */
};

MOZ_CAN_RUN_SCRIPT static bool
whenDefined(JSContext* cx, JS::Handle<JSObject*> obj, void* void_self, const JSJitMethodCallArgs& args)
{
  AUTO_PROFILER_LABEL_DYNAMIC_FAST(
    "CustomElementRegistry", "whenDefined", DOM, cx,
    uint32_t(js::ProfilingStackFrame::Flags::STRING_TEMPLATE_METHOD) |
    uint32_t(js::ProfilingStackFrame::Flags::RELEVANT_FOR_JS));

  auto* self = static_cast<mozilla::dom::CustomElementRegistry*>(void_self);
  if (!args.requireAtLeast(cx, "CustomElementRegistry.whenDefined", 1)) {
    return false;
  }
  binding_detail::FakeString<char16_t> arg0;
  if (!ConvertJSValueToString(cx, args[0], eStringify, eStringify, arg0)) {
    return false;
  }
  FastErrorResult rv;
  auto result(StrongOrRawPtr<Promise>(MOZ_KnownLive(self)->WhenDefined(NonNullHelper(Constify(arg0)), rv)));
  if (MOZ_UNLIKELY(rv.MaybeSetPendingException(cx, "CustomElementRegistry.whenDefined"))) {
    return false;
  }
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  if (!ToJSValue(cx, result, args.rval())) {
    return false;
  }
  return true;
}

MOZ_CAN_RUN_SCRIPT static bool
whenDefined_promiseWrapper(JSContext* cx, JS::Handle<JSObject*> obj, void* void_self, const JSJitMethodCallArgs& args)
{
  bool ok = whenDefined(cx, obj, void_self, args);
  if (ok) {
    return true;
  }
  return ConvertExceptionToPromise(cx, args.rval());
}

static const JSJitInfo whenDefined_methodinfo = {
  { (JSJitGetterOp)whenDefined_promiseWrapper },
  { prototypes::id::CustomElementRegistry },
  { PrototypeTraits<prototypes::id::CustomElementRegistry>::Depth },
  JSJitInfo::Method,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_OBJECT,  /* returnType.  Not relevant for setters. */
  false,  /* isInfallible. False in setters. */
  false,  /* isMovable.  Not relevant for setters. */
  false, /* isEliminatable.  Not relevant for setters. */
  false, /* isAlwaysInSlot.  Only relevant for getters. */
  false, /* isLazilyCachedInSlot.  Only relevant for getters. */
  false,  /* isTypedMethod.  Only relevant for methods. */
  0   /* Reserved slot index, if we're stored in a slot, else 0. */
};

MOZ_CAN_RUN_SCRIPT static bool
upgrade(JSContext* cx_, JS::Handle<JSObject*> obj, void* void_self, const JSJitMethodCallArgs& args)
{
  BindingCallContext cx(cx_, "CustomElementRegistry.upgrade");
  AUTO_PROFILER_LABEL_DYNAMIC_FAST(
    "CustomElementRegistry", "upgrade", DOM, cx,
    uint32_t(js::ProfilingStackFrame::Flags::STRING_TEMPLATE_METHOD) |
    uint32_t(js::ProfilingStackFrame::Flags::RELEVANT_FOR_JS));

  auto* self = static_cast<mozilla::dom::CustomElementRegistry*>(void_self);
  if (!args.requireAtLeast(cx, "CustomElementRegistry.upgrade", 1)) {
    return false;
  }
  NonNull<nsINode> arg0;
  if (args[0].isObject()) {
    {
      // Our JSContext should be in the right global to do unwrapping in.
      nsresult rv = UnwrapObject<prototypes::id::Node, nsINode>(args[0], arg0, cx);
      if (NS_FAILED(rv)) {
        cx.ThrowErrorMessage<MSG_DOES_NOT_IMPLEMENT_INTERFACE>("Argument 1", "Node");
        return false;
      }
    }
  } else {
    cx.ThrowErrorMessage<MSG_NOT_OBJECT>("Argument 1");
    return false;
  }
  Maybe<AutoCEReaction> ceReaction;
  DocGroup* docGroup = self->GetDocGroup();
  if (docGroup) {
    ceReaction.emplace(docGroup->CustomElementReactionsStack(), cx);
  }
  // NOTE: This assert does NOT call the function.
  static_assert(std::is_void_v<decltype(MOZ_KnownLive(self)->Upgrade(MOZ_KnownLive(NonNullHelper(arg0))))>, "Should be returning void here");
  MOZ_KnownLive(self)->Upgrade(MOZ_KnownLive(NonNullHelper(arg0)));
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  args.rval().setUndefined();
  return true;
}

static const JSJitInfo upgrade_methodinfo = {
  { (JSJitGetterOp)upgrade },
  { prototypes::id::CustomElementRegistry },
  { PrototypeTraits<prototypes::id::CustomElementRegistry>::Depth },
  JSJitInfo::Method,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_UNDEFINED,  /* returnType.  Not relevant for setters. */
  false,  /* isInfallible. False in setters. */
  false,  /* isMovable.  Not relevant for setters. */
  false, /* isEliminatable.  Not relevant for setters. */
  false, /* isAlwaysInSlot.  Only relevant for getters. */
  false, /* isLazilyCachedInSlot.  Only relevant for getters. */
  false,  /* isTypedMethod.  Only relevant for methods. */
  0   /* Reserved slot index, if we're stored in a slot, else 0. */
};

static void
_finalize(JS::GCContext* gcx, JSObject* obj)
{
  mozilla::dom::CustomElementRegistry* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::CustomElementRegistry>(obj);
  if (self) {
    JS::SetReservedSlot(obj, DOM_OBJECT_SLOT, JS::UndefinedValue());
    ClearWrapper(self, self, obj);
    if (size_t mallocBytes = BindingJSObjectMallocBytes(self)) {
      JS::RemoveAssociatedMemory(obj, mallocBytes,
                                 JS::MemoryUse::DOMBinding);
    }
    AddForDeferredFinalization<mozilla::dom::CustomElementRegistry>(self);
  }
}

MOZ_GLOBINIT static const JSFunctionSpec sMethods_specs[] = {
  JS_FNSPEC("define", (GenericMethod<NormalThisPolicy, ThrowExceptions>), reinterpret_cast<const JSJitInfo*>(&define_methodinfo), 2, JSPROP_ENUMERATE, nullptr),
  JS_FNSPEC("get", (GenericMethod<NormalThisPolicy, ThrowExceptions>), reinterpret_cast<const JSJitInfo*>(&get_methodinfo), 1, JSPROP_ENUMERATE, nullptr),
  JS_FNSPEC("getName", (GenericMethod<NormalThisPolicy, ThrowExceptions>), reinterpret_cast<const JSJitInfo*>(&getName_methodinfo), 1, JSPROP_ENUMERATE, nullptr),
  JS_FNSPEC("whenDefined", (GenericMethod<NormalThisPolicy, ConvertExceptionsToPromises>), reinterpret_cast<const JSJitInfo*>(&whenDefined_methodinfo), 1, JSPROP_ENUMERATE, nullptr),
  JS_FNSPEC("upgrade", (GenericMethod<NormalThisPolicy, ThrowExceptions>), reinterpret_cast<const JSJitInfo*>(&upgrade_methodinfo), 1, JSPROP_ENUMERATE, nullptr),
  JS_FS_END
};


static const Prefable<const JSFunctionSpec> sMethods[] = {
  { nullptr, &sMethods_specs[0] },
  { nullptr, nullptr }
};

static_assert(1 <= 1ull << NUM_BITS_PROPERTY_INFO_PREF_INDEX,
    "We have a prefable index that is >= (1 << NUM_BITS_PROPERTY_INFO_PREF_INDEX)");
static_assert(5 <= 1ull << NUM_BITS_PROPERTY_INFO_SPEC_INDEX,
    "We have a spec index that is >= (1 << NUM_BITS_PROPERTY_INFO_SPEC_INDEX)");

MOZ_GLOBINIT static const JSFunctionSpec sChromeMethods_specs[] = {
  JS_FNSPEC("setElementCreationCallback", (GenericMethod<NormalThisPolicy, ThrowExceptions>), reinterpret_cast<const JSJitInfo*>(&setElementCreationCallback_methodinfo), 2, JSPROP_ENUMERATE, nullptr),
  JS_FS_END
};


static const Prefable<const JSFunctionSpec> sChromeMethods[] = {
  { nullptr, &sChromeMethods_specs[0] },
  { nullptr, nullptr }
};

static_assert(1 <= 1ull << NUM_BITS_PROPERTY_INFO_PREF_INDEX,
    "We have a prefable index that is >= (1 << NUM_BITS_PROPERTY_INFO_PREF_INDEX)");
static_assert(1 <= 1ull << NUM_BITS_PROPERTY_INFO_SPEC_INDEX,
    "We have a spec index that is >= (1 << NUM_BITS_PROPERTY_INFO_SPEC_INDEX)");


static uint16_t sNativeProperties_sortedPropertyIndices[5];
static PropertyInfo sNativeProperties_propertyInfos[5];

static const NativePropertiesN<1> sNativeProperties = {
  false, 0,
  false, 0,
  true,  0 /* sMethods */,
  false, 0,
  false, 0,
  false, 0,
  false, 0,
  -1,
  5,
  sNativeProperties_sortedPropertyIndices,
  {
    { sMethods, &sNativeProperties_propertyInfos[0] }
  }
};
static_assert(5 < 1ull << (CHAR_BIT * sizeof(sNativeProperties.propertyInfoCount)),
    "We have a property info count that is oversized");

static uint16_t sChromeOnlyNativeProperties_sortedPropertyIndices[1];
static PropertyInfo sChromeOnlyNativeProperties_propertyInfos[1];

static const NativePropertiesN<1> sChromeOnlyNativeProperties = {
  false, 0,
  false, 0,
  true,  0 /* sChromeMethods */,
  false, 0,
  false, 0,
  false, 0,
  false, 0,
  -1,
  1,
  sChromeOnlyNativeProperties_sortedPropertyIndices,
  {
    { sChromeMethods, &sChromeOnlyNativeProperties_propertyInfos[0] }
  }
};
static_assert(1 < 1ull << (CHAR_BIT * sizeof(sChromeOnlyNativeProperties.propertyInfoCount)),
    "We have a property info count that is oversized");

bool sNativePropertiesInited = false;
const NativePropertyHooks sNativePropertyHooks = {
  nullptr,
  { sNativeProperties.Upcast(), sChromeOnlyNativeProperties.Upcast(), &sNativePropertiesInited },
  prototypes::id::CustomElementRegistry,
  constructors::id::CustomElementRegistry,
  &DefaultXrayExpandoObjectClass
};

static const DOMInterfaceInfo sInterfaceObjectInfo = {
  { ThrowingConstructor, &sNativePropertyHooks },
  JS::GetRealmFunctionPrototypeHandle,
  PrototypeTraits<prototypes::id::CustomElementRegistry>::Depth,
  prototypes::id::CustomElementRegistry,
  true,
  0,
  "CustomElementRegistry",
};

static const DOMIfaceAndProtoJSClass sPrototypeClass = {
  {
    "CustomElementRegistryPrototype",
    JSCLASS_IS_DOMIFACEANDPROTOJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(DOM_INTERFACE_PROTO_SLOTS_BASE),
    JS_NULL_CLASS_OPS,
    JS_NULL_CLASS_SPEC,
    JS_NULL_CLASS_EXT,
    JS_NULL_OBJECT_OPS
  },
  eInterfacePrototype,
  prototypes::id::CustomElementRegistry,
  PrototypeTraits<prototypes::id::CustomElementRegistry>::Depth,
  &sNativePropertyHooks,
  JS::GetRealmObjectPrototype
};

static JS::Handle<JSObject*>
GetProtoObjectHandle(JSContext* aCx);

static const JSClassOps sClassOps = {
  nullptr,               /* addProperty */
  nullptr,               /* delProperty */
  nullptr,               /* enumerate */
  nullptr, /* newEnumerate */
  nullptr, /* resolve */
  nullptr, /* mayResolve */
  _finalize, /* finalize */
  nullptr, /* call */
  nullptr,               /* construct */
  nullptr, /* trace */
};

static const DOMJSClass sClass = {
  { "CustomElementRegistry",
    JSCLASS_IS_DOMJSCLASS | JSCLASS_FOREGROUND_FINALIZE | JSCLASS_HAS_RESERVED_SLOTS(1) | JSCLASS_PRESERVES_WRAPPER,
    &sClassOps,
    JS_NULL_CLASS_SPEC,
    &NativeTypeHelpers<mozilla::dom::CustomElementRegistry>::sClassExtension,
    JS_NULL_OBJECT_OPS
  },
  { prototypes::id::CustomElementRegistry, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count },
  std::is_base_of_v<nsISupports, mozilla::dom::CustomElementRegistry>,
  &sNativePropertyHooks,
  FindAssociatedGlobalForNative<mozilla::dom::CustomElementRegistry>::Get,
  GetProtoObjectHandle,
  GetCCParticipant<mozilla::dom::CustomElementRegistry>::Get(),
  nullptr,
  NativeTypeHelpers<mozilla::dom::CustomElementRegistry>::GetWrapperCache
};
static_assert(1 == DOM_INSTANCE_RESERVED_SLOTS,
              "Must have the right minimal number of reserved slots.");
static_assert(1 >= 1,
              "Must have enough reserved slots.");

bool
Wrap(JSContext* aCx, mozilla::dom::CustomElementRegistry* aObject, nsWrapperCache* aCache, JS::Handle<JSObject*> aGivenProto, JS::MutableHandle<JSObject*> aReflector)
{
  static_assert(!std::is_base_of_v<NonRefcountedDOMObject, mozilla::dom::CustomElementRegistry>,
                "Shouldn't have wrappercached things that are not refcounted.");
  static_assert(std::is_same_v<decltype(aObject), mozilla::dom::CustomElementRegistry*>);
  MOZ_ASSERT(ToSupportsIsCorrect(aObject));
  MOZ_ASSERT_IF(aGivenProto, js::IsObjectInContextCompartment(aGivenProto, aCx));
  MOZ_ASSERT(!aCache->GetWrapper(),
             "You should probably not be using Wrap() directly; use "
             "GetOrCreateDOMReflector instead");

  MOZ_ASSERT(ToSupportsIsOnPrimaryInheritanceChain(aObject, aCache),
             "nsISupports must be on our primary inheritance chain");

  // If the wrapper cache contains a dead reflector then finalize that
  // now, ensuring that the finalizer for the old reflector always
  // runs before the new reflector is created and attached. This
  // avoids the awkward situation where there are multiple reflector
  // objects that contain pointers to the same native.

  if (JSObject* oldReflector = aCache->GetWrapperMaybeDead()) {
    _finalize(nullptr /* unused */, oldReflector);
    MOZ_ASSERT(!aCache->GetWrapperMaybeDead());
  }

  JS::Rooted<JSObject*> global(aCx, FindAssociatedGlobal(aCx, aObject->GetParentObject()));
  if (!global) {
    return false;
  }
  MOZ_ASSERT(JS_IsGlobalObject(global));
  JS::AssertObjectIsNotGray(global);

  // That might have ended up wrapping us already, due to the wonders
  // of XBL.  Check for that, and bail out as needed.
  aReflector.set(aCache->GetWrapper());
  if (aReflector) {
#ifdef DEBUG
    AssertReflectorHasGivenProto(aCx, aReflector, aGivenProto);
#endif // DEBUG
    return true;
  }

  JSAutoRealm ar(aCx, global);
  JS::Handle<JSObject*> canonicalProto = GetProtoObjectHandle(aCx);
  if (!canonicalProto) {
    return false;
  }
  JS::Rooted<JSObject*> proto(aCx);
  if (aGivenProto) {
    proto = aGivenProto;
    // Unfortunately, while aGivenProto was in the compartment of aCx
    // coming in, we changed compartments to that of "parent" so may need
    // to wrap the proto here.
    if (js::GetContextCompartment(aCx) != JS::GetCompartment(proto)) {
      if (!JS_WrapObject(aCx, &proto)) {
        return false;
      }
    }
  } else {
    proto = canonicalProto;
  }

  BindingJSObjectCreator<mozilla::dom::CustomElementRegistry> creator(aCx);
  creator.CreateObject(aCx, sClass.ToJSClass(), proto, aObject, aReflector);
  if (!aReflector) {
    return false;
  }

  aCache->SetWrapper(aReflector);
  creator.InitializationSucceeded();

  MOZ_ASSERT(aCache->GetWrapperPreserveColor() &&
             aCache->GetWrapperPreserveColor() == aReflector);
  // If proto != canonicalProto, we have to preserve our wrapper;
  // otherwise we won't be able to properly recreate it later, since
  // we won't know what proto to use.  Note that we don't check
  // aGivenProto here, since it's entirely possible (and even
  // somewhat common) to have a non-null aGivenProto which is the
  // same as canonicalProto.
  if (proto != canonicalProto) {
    PreserveWrapper(aObject);
  }

  return true;
}

void
CreateInterfaceObjects(JSContext* aCx, JS::Handle<JSObject*> aGlobal, ProtoAndIfaceCache& aProtoAndIfaceCache, DefineInterfaceProperty aDefineOnGlobal)
{
  JS::Heap<JSObject*>* protoCache = &aProtoAndIfaceCache.EntrySlotOrCreate(prototypes::id::CustomElementRegistry);
  JS::Heap<JSObject*>* interfaceCache = &aProtoAndIfaceCache.EntrySlotOrCreate(constructors::id::CustomElementRegistry);

  JS::Handle<JSObject*> parentProto(JS::GetRealmObjectPrototypeHandle(aCx));
  if (!parentProto) {
    return;
  }

  JS::Handle<JSObject*> constructorProto(JS::GetRealmFunctionPrototypeHandle(aCx));
  if (!constructorProto) {
    return;
  }

  dom::CreateInterfaceObjects(aCx, aGlobal, parentProto,
                              &sPrototypeClass, protoCache,
                              constructorProto, &sInterfaceObjectInfo, 0, false, Span<const LegacyFactoryFunction, 0>{},
                              interfaceCache,
                              sNativeProperties.Upcast(),
                              sChromeOnlyNativeProperties.Upcast(),
                              "CustomElementRegistry",
                              aDefineOnGlobal != DefineInterfaceProperty::No,
                              nullptr,
                              false,
                              nullptr);
}

static JS::Handle<JSObject*>
GetProtoObjectHandle(JSContext* aCx)
{
  /* Get the interface prototype object for this class.  This will create the
     object as needed. */
  return GetPerInterfaceObjectHandle(aCx, prototypes::id::CustomElementRegistry,
                                     &CreateInterfaceObjects,
                                     DefineInterfaceProperty::CheckExposure);

}

JS::Handle<JSObject*>
GetConstructorObjectHandle(JSContext* aCx)
{
  /* Get the interface object for this class.  This will create the object as
     needed. */

  return GetPerInterfaceObjectHandle(aCx, constructors::id::CustomElementRegistry,
                                     &CreateInterfaceObjects,
                                     DefineInterfaceProperty::CheckExposure);
}

} // namespace CustomElementRegistry_Binding



} // namespace dom


} // namespace mozilla
