#include <AK/Array.h>
#include <AK/String.h>
#include <AK/TypeCasts.h>
#include <AK/Utf16String.h>
#include <AK/Variant.h>
#include <LibJS/Runtime/Error.h>
#include <LibJS/Runtime/PrimitiveString.h>
#include <LibJS/Runtime/Promise.h>
#include <LibJS/Runtime/PropertyDescriptor.h>
#include <LibJS/Runtime/VM.h>
#include <LibJS/Runtime/Value.h>
#include <LibJS/Runtime/ValueInlines.h>
#include <LibWeb/Bindings/ExceptionOrUtils.h>
#include <LibWeb/Bindings/HTMLElement.h>
#include <LibWeb/Bindings/HTMLMediaElement.h>
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/Bindings/MainThreadVM.h>
#include <LibWeb/Bindings/PlatformObject.h>
#include <LibWeb/Bindings/TextTrack.h>
#include <LibWeb/DOM/Document.h>
#include <LibWeb/FileAPI/Blob.h>
#include <LibWeb/HTML/AudioTrackList.h>
#include <LibWeb/HTML/HTMLMediaElement.h>
#include <LibWeb/HTML/MediaError.h>
#include <LibWeb/HTML/Scripting/SimilarOriginWindowAgent.h>
#include <LibWeb/HTML/TextTrack.h>
#include <LibWeb/HTML/TextTrackList.h>
#include <LibWeb/HTML/TimeRanges.h>
#include <LibWeb/HTML/VideoTrackList.h>
#include <LibWeb/Infra/Strings.h>
#include <LibWeb/MediaSourceExtensions/MediaSource.h>
#include <LibWeb/WebIDL/AbstractOperations.h>
#include <LibWeb/WebIDL/Promise.h>
#include <LibWeb/WebIDL/Tracing.h>
#include <LibWeb/WebIDL/Types.h>

namespace Web::Bindings {

void HTMLMediaElementConstructor::initialize(JS::Realm& realm, JS::NativeFunction& object)
{
    auto& vm = realm.vm();
    [[maybe_unused]] u8 default_attributes = JS::Attribute::Enumerable;

    object.set_prototype(&ensure_web_constructor<HTMLElementPrototype>(realm, "HTMLElement"_fly_string));
    object.define_direct_property(vm.names.length, JS::Value(0), JS::Attribute::Configurable);
    object.define_direct_property(vm.names.name, JS::PrimitiveString::create(vm, "HTMLMediaElement"_utf16), JS::Attribute::Configurable);
    object.define_direct_property(vm.names.prototype, &ensure_web_prototype<HTMLMediaElementPrototype>(realm, "HTMLMediaElement"_fly_string), 0);

    // 1. FIXME: If const is not exposed in realm, then continue.
    // 2. Let value be the result of converting const’s IDL value to a JavaScript value.
    // 3. Let desc be the PropertyDescriptor{[[Writable]]: false, [[Enumerable]]: true, [[Configurable]]: false, [[Value]]: value}.
    // 4. Let id be const’s identifier.
    // 5. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_property("NETWORK_EMPTY"_utf16_fly_string, JS::Value(static_cast<WebIDL::UnsignedShort>(0)), JS::Attribute::Enumerable);
    // 1. FIXME: If const is not exposed in realm, then continue.
    // 2. Let value be the result of converting const’s IDL value to a JavaScript value.
    // 3. Let desc be the PropertyDescriptor{[[Writable]]: false, [[Enumerable]]: true, [[Configurable]]: false, [[Value]]: value}.
    // 4. Let id be const’s identifier.
    // 5. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_property("NETWORK_IDLE"_utf16_fly_string, JS::Value(static_cast<WebIDL::UnsignedShort>(1)), JS::Attribute::Enumerable);
    // 1. FIXME: If const is not exposed in realm, then continue.
    // 2. Let value be the result of converting const’s IDL value to a JavaScript value.
    // 3. Let desc be the PropertyDescriptor{[[Writable]]: false, [[Enumerable]]: true, [[Configurable]]: false, [[Value]]: value}.
    // 4. Let id be const’s identifier.
    // 5. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_property("NETWORK_LOADING"_utf16_fly_string, JS::Value(static_cast<WebIDL::UnsignedShort>(2)), JS::Attribute::Enumerable);
    // 1. FIXME: If const is not exposed in realm, then continue.
    // 2. Let value be the result of converting const’s IDL value to a JavaScript value.
    // 3. Let desc be the PropertyDescriptor{[[Writable]]: false, [[Enumerable]]: true, [[Configurable]]: false, [[Value]]: value}.
    // 4. Let id be const’s identifier.
    // 5. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_property("NETWORK_NO_SOURCE"_utf16_fly_string, JS::Value(static_cast<WebIDL::UnsignedShort>(3)), JS::Attribute::Enumerable);
    // 1. FIXME: If const is not exposed in realm, then continue.
    // 2. Let value be the result of converting const’s IDL value to a JavaScript value.
    // 3. Let desc be the PropertyDescriptor{[[Writable]]: false, [[Enumerable]]: true, [[Configurable]]: false, [[Value]]: value}.
    // 4. Let id be const’s identifier.
    // 5. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_property("HAVE_NOTHING"_utf16_fly_string, JS::Value(static_cast<WebIDL::UnsignedShort>(0)), JS::Attribute::Enumerable);
    // 1. FIXME: If const is not exposed in realm, then continue.
    // 2. Let value be the result of converting const’s IDL value to a JavaScript value.
    // 3. Let desc be the PropertyDescriptor{[[Writable]]: false, [[Enumerable]]: true, [[Configurable]]: false, [[Value]]: value}.
    // 4. Let id be const’s identifier.
    // 5. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_property("HAVE_METADATA"_utf16_fly_string, JS::Value(static_cast<WebIDL::UnsignedShort>(1)), JS::Attribute::Enumerable);
    // 1. FIXME: If const is not exposed in realm, then continue.
    // 2. Let value be the result of converting const’s IDL value to a JavaScript value.
    // 3. Let desc be the PropertyDescriptor{[[Writable]]: false, [[Enumerable]]: true, [[Configurable]]: false, [[Value]]: value}.
    // 4. Let id be const’s identifier.
    // 5. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_property("HAVE_CURRENT_DATA"_utf16_fly_string, JS::Value(static_cast<WebIDL::UnsignedShort>(2)), JS::Attribute::Enumerable);
    // 1. FIXME: If const is not exposed in realm, then continue.
    // 2. Let value be the result of converting const’s IDL value to a JavaScript value.
    // 3. Let desc be the PropertyDescriptor{[[Writable]]: false, [[Enumerable]]: true, [[Configurable]]: false, [[Value]]: value}.
    // 4. Let id be const’s identifier.
    // 5. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_property("HAVE_FUTURE_DATA"_utf16_fly_string, JS::Value(static_cast<WebIDL::UnsignedShort>(3)), JS::Attribute::Enumerable);
    // 1. FIXME: If const is not exposed in realm, then continue.
    // 2. Let value be the result of converting const’s IDL value to a JavaScript value.
    // 3. Let desc be the PropertyDescriptor{[[Writable]]: false, [[Enumerable]]: true, [[Configurable]]: false, [[Value]]: value}.
    // 4. Let id be const’s identifier.
    // 5. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_property("HAVE_ENOUGH_DATA"_utf16_fly_string, JS::Value(static_cast<WebIDL::UnsignedShort>(4)), JS::Attribute::Enumerable);
}

JS::ThrowCompletionOr<GC::Ref<JS::Object>> HTMLMediaElementConstructor::construct([[maybe_unused]] InterfaceConstructor& constructor, [[maybe_unused]] JS::FunctionObject& new_target)
{
    WebIDL::log_trace(constructor.vm(), "HTMLMediaElementConstructor::construct");
    return constructor.vm().throw_completion<JS::TypeError>(JS::ErrorType::NotAConstructor, "HTMLMediaElement");
}

void HTMLMediaElementPrototype::initialize(JS::Realm& realm, JS::Object& object)
{
    [[maybe_unused]] auto& vm = realm.vm();
    [[maybe_unused]] u8 default_attributes = JS::Attribute::Enumerable | JS::Attribute::Configurable | JS::Attribute::Writable;

    object.set_prototype(GC::Ref { ensure_web_prototype<HTMLElementPrototype>(realm, "HTMLElement"_fly_string) });

    auto error_id = "error"_utf16_fly_string;
    auto native_error_getter = JS::NativeFunction::create(realm, error_getter, 0, error_id, &realm, "get"sv);
    GC::Ptr<JS::NativeFunction> native_error_setter;

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto error_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(error_id, native_error_getter, native_error_setter, error_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto src_id = "src"_utf16_fly_string;
    auto native_src_getter = JS::NativeFunction::create(realm, src_getter, 0, src_id, &realm, "get"sv);
    auto native_src_setter = JS::NativeFunction::create(realm, src_setter, 1, src_id, &realm, "set"sv);

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto src_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(src_id, native_src_getter, native_src_setter, src_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto src_object_id = "srcObject"_utf16_fly_string;
    auto native_src_object_getter = JS::NativeFunction::create(realm, src_object_getter, 0, src_object_id, &realm, "get"sv);
    auto native_src_object_setter = JS::NativeFunction::create(realm, src_object_setter, 1, src_object_id, &realm, "set"sv);

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto src_object_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(src_object_id, native_src_object_getter, native_src_object_setter, src_object_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto current_src_id = "currentSrc"_utf16_fly_string;
    auto native_current_src_getter = JS::NativeFunction::create(realm, current_src_getter, 0, current_src_id, &realm, "get"sv);
    GC::Ptr<JS::NativeFunction> native_current_src_setter;

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto current_src_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(current_src_id, native_current_src_getter, native_current_src_setter, current_src_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto cross_origin_id = "crossOrigin"_utf16_fly_string;
    auto native_cross_origin_getter = JS::NativeFunction::create(realm, cross_origin_getter, 0, cross_origin_id, &realm, "get"sv);
    auto native_cross_origin_setter = JS::NativeFunction::create(realm, cross_origin_setter, 1, cross_origin_id, &realm, "set"sv);

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto cross_origin_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(cross_origin_id, native_cross_origin_getter, native_cross_origin_setter, cross_origin_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto network_state_id = "networkState"_utf16_fly_string;
    auto native_network_state_getter = JS::NativeFunction::create(realm, network_state_getter, 0, network_state_id, &realm, "get"sv);
    GC::Ptr<JS::NativeFunction> native_network_state_setter;

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto network_state_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(network_state_id, native_network_state_getter, native_network_state_setter, network_state_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto preload_id = "preload"_utf16_fly_string;
    auto native_preload_getter = JS::NativeFunction::create(realm, preload_getter, 0, preload_id, &realm, "get"sv);
    auto native_preload_setter = JS::NativeFunction::create(realm, preload_setter, 1, preload_id, &realm, "set"sv);

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto preload_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(preload_id, native_preload_getter, native_preload_setter, preload_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto buffered_id = "buffered"_utf16_fly_string;
    auto native_buffered_getter = JS::NativeFunction::create(realm, buffered_getter, 0, buffered_id, &realm, "get"sv);
    GC::Ptr<JS::NativeFunction> native_buffered_setter;

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto buffered_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(buffered_id, native_buffered_getter, native_buffered_setter, buffered_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto ready_state_id = "readyState"_utf16_fly_string;
    auto native_ready_state_getter = JS::NativeFunction::create(realm, ready_state_getter, 0, ready_state_id, &realm, "get"sv);
    GC::Ptr<JS::NativeFunction> native_ready_state_setter;

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto ready_state_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(ready_state_id, native_ready_state_getter, native_ready_state_setter, ready_state_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto seeking_id = "seeking"_utf16_fly_string;
    auto native_seeking_getter = JS::NativeFunction::create(realm, seeking_getter, 0, seeking_id, &realm, "get"sv);
    GC::Ptr<JS::NativeFunction> native_seeking_setter;

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto seeking_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(seeking_id, native_seeking_getter, native_seeking_setter, seeking_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto current_time_id = "currentTime"_utf16_fly_string;
    auto native_current_time_getter = JS::NativeFunction::create(realm, current_time_getter, 0, current_time_id, &realm, "get"sv);
    auto native_current_time_setter = JS::NativeFunction::create(realm, current_time_setter, 1, current_time_id, &realm, "set"sv);

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto current_time_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(current_time_id, native_current_time_getter, native_current_time_setter, current_time_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto duration_id = "duration"_utf16_fly_string;
    auto native_duration_getter = JS::NativeFunction::create(realm, duration_getter, 0, duration_id, &realm, "get"sv);
    GC::Ptr<JS::NativeFunction> native_duration_setter;

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto duration_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(duration_id, native_duration_getter, native_duration_setter, duration_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto paused_id = "paused"_utf16_fly_string;
    auto native_paused_getter = JS::NativeFunction::create(realm, paused_getter, 0, paused_id, &realm, "get"sv);
    GC::Ptr<JS::NativeFunction> native_paused_setter;

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto paused_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(paused_id, native_paused_getter, native_paused_setter, paused_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto default_playback_rate_id = "defaultPlaybackRate"_utf16_fly_string;
    auto native_default_playback_rate_getter = JS::NativeFunction::create(realm, default_playback_rate_getter, 0, default_playback_rate_id, &realm, "get"sv);
    auto native_default_playback_rate_setter = JS::NativeFunction::create(realm, default_playback_rate_setter, 1, default_playback_rate_id, &realm, "set"sv);

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto default_playback_rate_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(default_playback_rate_id, native_default_playback_rate_getter, native_default_playback_rate_setter, default_playback_rate_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto playback_rate_id = "playbackRate"_utf16_fly_string;
    auto native_playback_rate_getter = JS::NativeFunction::create(realm, playback_rate_getter, 0, playback_rate_id, &realm, "get"sv);
    auto native_playback_rate_setter = JS::NativeFunction::create(realm, playback_rate_setter, 1, playback_rate_id, &realm, "set"sv);

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto playback_rate_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(playback_rate_id, native_playback_rate_getter, native_playback_rate_setter, playback_rate_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto played_id = "played"_utf16_fly_string;
    auto native_played_getter = JS::NativeFunction::create(realm, played_getter, 0, played_id, &realm, "get"sv);
    GC::Ptr<JS::NativeFunction> native_played_setter;

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto played_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(played_id, native_played_getter, native_played_setter, played_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto seekable_id = "seekable"_utf16_fly_string;
    auto native_seekable_getter = JS::NativeFunction::create(realm, seekable_getter, 0, seekable_id, &realm, "get"sv);
    GC::Ptr<JS::NativeFunction> native_seekable_setter;

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto seekable_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(seekable_id, native_seekable_getter, native_seekable_setter, seekable_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto ended_id = "ended"_utf16_fly_string;
    auto native_ended_getter = JS::NativeFunction::create(realm, ended_getter, 0, ended_id, &realm, "get"sv);
    GC::Ptr<JS::NativeFunction> native_ended_setter;

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto ended_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(ended_id, native_ended_getter, native_ended_setter, ended_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto autoplay_id = "autoplay"_utf16_fly_string;
    auto native_autoplay_getter = JS::NativeFunction::create(realm, autoplay_getter, 0, autoplay_id, &realm, "get"sv);
    auto native_autoplay_setter = JS::NativeFunction::create(realm, autoplay_setter, 1, autoplay_id, &realm, "set"sv);

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto autoplay_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(autoplay_id, native_autoplay_getter, native_autoplay_setter, autoplay_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto loop_id = "loop"_utf16_fly_string;
    auto native_loop_getter = JS::NativeFunction::create(realm, loop_getter, 0, loop_id, &realm, "get"sv);
    auto native_loop_setter = JS::NativeFunction::create(realm, loop_setter, 1, loop_id, &realm, "set"sv);

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto loop_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(loop_id, native_loop_getter, native_loop_setter, loop_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto controls_id = "controls"_utf16_fly_string;
    auto native_controls_getter = JS::NativeFunction::create(realm, controls_getter, 0, controls_id, &realm, "get"sv);
    auto native_controls_setter = JS::NativeFunction::create(realm, controls_setter, 1, controls_id, &realm, "set"sv);

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto controls_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(controls_id, native_controls_getter, native_controls_setter, controls_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto volume_id = "volume"_utf16_fly_string;
    auto native_volume_getter = JS::NativeFunction::create(realm, volume_getter, 0, volume_id, &realm, "get"sv);
    auto native_volume_setter = JS::NativeFunction::create(realm, volume_setter, 1, volume_id, &realm, "set"sv);

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto volume_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(volume_id, native_volume_getter, native_volume_setter, volume_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto muted_id = "muted"_utf16_fly_string;
    auto native_muted_getter = JS::NativeFunction::create(realm, muted_getter, 0, muted_id, &realm, "get"sv);
    auto native_muted_setter = JS::NativeFunction::create(realm, muted_setter, 1, muted_id, &realm, "set"sv);

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto muted_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(muted_id, native_muted_getter, native_muted_setter, muted_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto default_muted_id = "defaultMuted"_utf16_fly_string;
    auto native_default_muted_getter = JS::NativeFunction::create(realm, default_muted_getter, 0, default_muted_id, &realm, "get"sv);
    auto native_default_muted_setter = JS::NativeFunction::create(realm, default_muted_setter, 1, default_muted_id, &realm, "set"sv);

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto default_muted_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(default_muted_id, native_default_muted_getter, native_default_muted_setter, default_muted_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto audio_tracks_id = "audioTracks"_utf16_fly_string;
    auto native_audio_tracks_getter = JS::NativeFunction::create(realm, audio_tracks_getter, 0, audio_tracks_id, &realm, "get"sv);
    GC::Ptr<JS::NativeFunction> native_audio_tracks_setter;

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto audio_tracks_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(audio_tracks_id, native_audio_tracks_getter, native_audio_tracks_setter, audio_tracks_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto video_tracks_id = "videoTracks"_utf16_fly_string;
    auto native_video_tracks_getter = JS::NativeFunction::create(realm, video_tracks_getter, 0, video_tracks_id, &realm, "get"sv);
    GC::Ptr<JS::NativeFunction> native_video_tracks_setter;

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto video_tracks_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(video_tracks_id, native_video_tracks_getter, native_video_tracks_setter, video_tracks_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto text_tracks_id = "textTracks"_utf16_fly_string;
    auto native_text_tracks_getter = JS::NativeFunction::create(realm, text_tracks_getter, 0, text_tracks_id, &realm, "get"sv);
    GC::Ptr<JS::NativeFunction> native_text_tracks_setter;

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto text_tracks_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(text_tracks_id, native_text_tracks_getter, native_text_tracks_setter, text_tracks_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    object.define_native_function(realm, "load"_utf16_fly_string, load, 0, default_attributes);

    object.define_native_function(realm, "canPlayType"_utf16_fly_string, can_play_type, 1, default_attributes);

    object.define_native_function(realm, "fastSeek"_utf16_fly_string, fast_seek, 1, default_attributes);

    object.define_native_function(realm, "getStartDate"_utf16_fly_string, get_start_date, 0, default_attributes);

    object.define_native_function(realm, "play"_utf16_fly_string, play, 0, default_attributes);

    object.define_native_function(realm, "pause"_utf16_fly_string, pause, 0, default_attributes);

    object.define_native_function(realm, "addTextTrack"_utf16_fly_string, add_text_track, 1, default_attributes);


    // 1. FIXME: If const is not exposed in realm, then continue.
    // 2. Let value be the result of converting const’s IDL value to a JavaScript value.
    // 3. Let desc be the PropertyDescriptor{[[Writable]]: false, [[Enumerable]]: true, [[Configurable]]: false, [[Value]]: value}.
    // 4. Let id be const’s identifier.
    // 5. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_property("NETWORK_EMPTY"_utf16_fly_string, JS::Value(static_cast<WebIDL::UnsignedShort>(0)), JS::Attribute::Enumerable);
    // 1. FIXME: If const is not exposed in realm, then continue.
    // 2. Let value be the result of converting const’s IDL value to a JavaScript value.
    // 3. Let desc be the PropertyDescriptor{[[Writable]]: false, [[Enumerable]]: true, [[Configurable]]: false, [[Value]]: value}.
    // 4. Let id be const’s identifier.
    // 5. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_property("NETWORK_IDLE"_utf16_fly_string, JS::Value(static_cast<WebIDL::UnsignedShort>(1)), JS::Attribute::Enumerable);
    // 1. FIXME: If const is not exposed in realm, then continue.
    // 2. Let value be the result of converting const’s IDL value to a JavaScript value.
    // 3. Let desc be the PropertyDescriptor{[[Writable]]: false, [[Enumerable]]: true, [[Configurable]]: false, [[Value]]: value}.
    // 4. Let id be const’s identifier.
    // 5. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_property("NETWORK_LOADING"_utf16_fly_string, JS::Value(static_cast<WebIDL::UnsignedShort>(2)), JS::Attribute::Enumerable);
    // 1. FIXME: If const is not exposed in realm, then continue.
    // 2. Let value be the result of converting const’s IDL value to a JavaScript value.
    // 3. Let desc be the PropertyDescriptor{[[Writable]]: false, [[Enumerable]]: true, [[Configurable]]: false, [[Value]]: value}.
    // 4. Let id be const’s identifier.
    // 5. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_property("NETWORK_NO_SOURCE"_utf16_fly_string, JS::Value(static_cast<WebIDL::UnsignedShort>(3)), JS::Attribute::Enumerable);
    // 1. FIXME: If const is not exposed in realm, then continue.
    // 2. Let value be the result of converting const’s IDL value to a JavaScript value.
    // 3. Let desc be the PropertyDescriptor{[[Writable]]: false, [[Enumerable]]: true, [[Configurable]]: false, [[Value]]: value}.
    // 4. Let id be const’s identifier.
    // 5. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_property("HAVE_NOTHING"_utf16_fly_string, JS::Value(static_cast<WebIDL::UnsignedShort>(0)), JS::Attribute::Enumerable);
    // 1. FIXME: If const is not exposed in realm, then continue.
    // 2. Let value be the result of converting const’s IDL value to a JavaScript value.
    // 3. Let desc be the PropertyDescriptor{[[Writable]]: false, [[Enumerable]]: true, [[Configurable]]: false, [[Value]]: value}.
    // 4. Let id be const’s identifier.
    // 5. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_property("HAVE_METADATA"_utf16_fly_string, JS::Value(static_cast<WebIDL::UnsignedShort>(1)), JS::Attribute::Enumerable);
    // 1. FIXME: If const is not exposed in realm, then continue.
    // 2. Let value be the result of converting const’s IDL value to a JavaScript value.
    // 3. Let desc be the PropertyDescriptor{[[Writable]]: false, [[Enumerable]]: true, [[Configurable]]: false, [[Value]]: value}.
    // 4. Let id be const’s identifier.
    // 5. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_property("HAVE_CURRENT_DATA"_utf16_fly_string, JS::Value(static_cast<WebIDL::UnsignedShort>(2)), JS::Attribute::Enumerable);
    // 1. FIXME: If const is not exposed in realm, then continue.
    // 2. Let value be the result of converting const’s IDL value to a JavaScript value.
    // 3. Let desc be the PropertyDescriptor{[[Writable]]: false, [[Enumerable]]: true, [[Configurable]]: false, [[Value]]: value}.
    // 4. Let id be const’s identifier.
    // 5. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_property("HAVE_FUTURE_DATA"_utf16_fly_string, JS::Value(static_cast<WebIDL::UnsignedShort>(3)), JS::Attribute::Enumerable);
    // 1. FIXME: If const is not exposed in realm, then continue.
    // 2. Let value be the result of converting const’s IDL value to a JavaScript value.
    // 3. Let desc be the PropertyDescriptor{[[Writable]]: false, [[Enumerable]]: true, [[Configurable]]: false, [[Value]]: value}.
    // 4. Let id be const’s identifier.
    // 5. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_property("HAVE_ENOUGH_DATA"_utf16_fly_string, JS::Value(static_cast<WebIDL::UnsignedShort>(4)), JS::Attribute::Enumerable);
    object.define_direct_property(vm.well_known_symbol_to_string_tag(), JS::PrimitiveString::create(vm, "HTMLMediaElement"_utf16), JS::Attribute::Configurable);
}

void HTMLMediaElementPrototype::define_unforgeable_attributes(JS::Realm& realm, [[maybe_unused]] JS::Object& object)
{
    [[maybe_unused]] auto& vm = realm.vm();
    [[maybe_unused]] u8 default_attributes = JS::Attribute::Enumerable;
}

[[maybe_unused]] static JS::ThrowCompletionOr<HTML::HTMLMediaElement*> impl_from(JS::VM& vm, JS::Value js_value)
{

    if (auto impl = js_value.as_if<HTML::HTMLMediaElement>())
        return impl.ptr();
    return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAnObjectOfType, "HTMLMediaElement");
}

[[maybe_unused]] static JS::ThrowCompletionOr<HTML::HTMLMediaElement*> impl_from(JS::VM& vm)
{
    auto this_value = vm.this_value();
    if (this_value.is_nullish())
        this_value = &vm.current_realm()->global_object();
    return impl_from(vm, this_value);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::error_getter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::error_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->error(); }));

    return [&]() -> JS::Value {
        // 1. If the IDL nullable type T? value is null, then the JavaScript value is null.
        if (!R)
            return JS::js_null();

        // 2. Otherwise, the JavaScript value is the result of converting the IDL nullable type value to the inner IDL type T.
        return JS::Value(JS::Value(R));
    }();
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::src_getter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::src_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    // If a reflected IDL attribute has the type USVString:
    // 1. Let element be the result of running this's get the element.
    // 2. Let contentAttributeValue be the result of running this's get the content attribute.
    auto content_attribute_value = idl_object->attribute("src"_utf16_fly_string);

    // 3. Let attributeDefinition be the attribute definition of element's content attribute whose namespace is null and local name is the reflected content attribute name.

    // 4. If attributeDefinition indicates it contains a URL:
    Utf16String R;
    if (content_attribute_value.has_value()) {
        // 2. Let urlString be the result of encoding-parsing-and-serializing a URL given contentAttributeValue, relative to element's node document.
        auto url_string = idl_object->document().encoding_parse_and_serialize_url(*content_attribute_value);

        // 3. If urlString is not failure, then return urlString.
        if (url_string.has_value())
            R = Utf16String::from_utf8(url_string.release_value());
        else
            R = MUST(Infra::convert_to_scalar_value_string(*content_attribute_value));
    }

    return WebIDL::primitive_string_from_string(vm, R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::src_object_getter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::src_object_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->src_object(); }));

    return R.visit(
        [&](GC::Ref<MediaSourceExtensions::MediaSource> const& visited_union_value0) -> JS::Value
        {
            return JS::Value(visited_union_value0);
        },
        [&](GC::Ref<FileAPI::Blob> const& visited_union_value1) -> JS::Value
        {
            return JS::Value(visited_union_value1);
        },
        [](Empty) -> JS::Value
        {
            return JS::js_null();
        }
    );
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::current_src_getter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::current_src_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->current_src(); }));

    return WebIDL::primitive_string_from_string(vm, R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::cross_origin_getter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::cross_origin_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    // If a reflected IDL attribute is an enumerated attribute:
    // 1. Let contentAttributeValue be the result of running this's get the content attribute.
    auto R = idl_object->attribute("crossorigin"_utf16_fly_string);

    // 3. If contentAttributeValue is an ASCII case-insensitive match for one of the keywords, then return that keyword's canonical keyword.
    Array valid_values { "anonymous"_utf16, "use-credentials"_utf16 };
    if (R.has_value()) {
        auto has_keyword = false;
        for (auto const& value : valid_values) {
            if (value.equals_ignoring_ascii_case(*R)) {
                has_keyword = true;
                R = value;
                break;
            }
        }

        // 4. If contentAttributeValue is not a keyword, return the invalid value default.
        if (!has_keyword)
            R = "anonymous"_utf16;
    }

    return [&]() -> JS::Value {
        // 1. If the IDL nullable type T? value is null, then the JavaScript value is null.
        if (!R.has_value())
            return JS::js_null();

        // 2. Otherwise, the JavaScript value is the result of converting the IDL nullable type value to the inner IDL type T.
        return JS::Value(WebIDL::primitive_string_from_string(vm, R.value()));
    }();
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::network_state_getter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::network_state_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->network_state(); }));

    return JS::Value(static_cast<WebIDL::UnsignedShort>(R));
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::preload_getter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::preload_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    // If a reflected IDL attribute is an enumerated attribute:
    // 1. Let contentAttributeValue be the result of running this's get the content attribute.
    auto content_attribute_value = idl_object->attribute("preload"_utf16_fly_string);

    // 2. If contentAttributeValue is null, then set contentAttributeValue to the missing value default.
    auto R = content_attribute_value.value_or("metadata"_utf16);
    auto did_set_to_missing_value = false;
    if (!content_attribute_value.has_value())
        did_set_to_missing_value = true;

    // 3. If contentAttributeValue is an ASCII case-insensitive match for one of the keywords, then return that keyword's canonical keyword.
    Array valid_values { "auto"_utf16, "none"_utf16, "metadata"_utf16 };
    auto has_keyword = false;
    for (auto const& value : valid_values) {
        if (value.equals_ignoring_ascii_case(R)) {
            has_keyword = true;
            R = value;
            break;
        }
    }

    // 4. If contentAttributeValue is not a keyword and was not set to the missing value default, return the invalid value default.
    if (!has_keyword && !did_set_to_missing_value)
        R = "metadata"_utf16;

    return WebIDL::primitive_string_from_string(vm, R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::buffered_getter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::buffered_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->buffered(); }));

    return JS::Value(R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::ready_state_getter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::ready_state_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->ready_state(); }));

    return JS::Value(static_cast<WebIDL::UnsignedShort>(R));
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::seeking_getter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::seeking_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->seeking(); }));

    return JS::Value(R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::current_time_getter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::current_time_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->current_time(); }));

    return JS::Value(R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::duration_getter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::duration_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->duration(); }));

    return JS::Value(R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::paused_getter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::paused_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->paused(); }));

    return JS::Value(R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::default_playback_rate_getter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::default_playback_rate_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->default_playback_rate(); }));

    return JS::Value(R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::playback_rate_getter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::playback_rate_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->playback_rate(); }));

    return JS::Value(R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::played_getter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::played_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->played(); }));

    return JS::Value(R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::seekable_getter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::seekable_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->seekable(); }));

    return JS::Value(R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::ended_getter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::ended_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->ended(); }));

    return JS::Value(R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::autoplay_getter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::autoplay_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    // If a reflected IDL attribute has the type boolean:
    // 1. Let contentAttributeValue be the result of running this's get the content attribute.
    // 2. If contentAttributeValue is null, then return false.
    auto R = idl_object->has_attribute("autoplay"_utf16_fly_string);

    return JS::Value(R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::loop_getter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::loop_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    // If a reflected IDL attribute has the type boolean:
    // 1. Let contentAttributeValue be the result of running this's get the content attribute.
    // 2. If contentAttributeValue is null, then return false.
    auto R = idl_object->has_attribute("loop"_utf16_fly_string);

    return JS::Value(R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::controls_getter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::controls_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    // If a reflected IDL attribute has the type boolean:
    // 1. Let contentAttributeValue be the result of running this's get the content attribute.
    // 2. If contentAttributeValue is null, then return false.
    auto R = idl_object->has_attribute("controls"_utf16_fly_string);

    return JS::Value(R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::volume_getter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::volume_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->volume(); }));

    return JS::Value(R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::muted_getter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::muted_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->muted(); }));

    return JS::Value(R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::default_muted_getter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::default_muted_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    // If a reflected IDL attribute has the type boolean:
    // 1. Let contentAttributeValue be the result of running this's get the content attribute.
    // 2. If contentAttributeValue is null, then return false.
    auto R = idl_object->has_attribute("muted"_utf16_fly_string);

    return JS::Value(R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::audio_tracks_getter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::audio_tracks_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->audio_tracks(); }));

    return JS::Value(R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::video_tracks_getter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::video_tracks_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->video_tracks(); }));

    return JS::Value(R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::text_tracks_getter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::text_tracks_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->text_tracks(); }));

    return JS::Value(R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::src_setter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::src_setter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    // 1. Let V be undefined.
    auto V = JS::js_undefined();

    // 2. If any arguments were passed, then set V to the value of the first argument passed.
    if (vm.argument_count() > 0)
        V = vm.argument(0);

    // 3. Let id be attribute’s identifier.

    // 4. Let idlObject be null.
    [[maybe_unused]] HTML::HTMLMediaElement* idl_object = nullptr;

    // 5. If attribute is a regular attribute:

    // 1. Let jsValue be the this value, if it is not null or undefined, or realm’s global object otherwise. (This will subsequently cause a TypeError in a few steps, if the global object does not implement target and [LegacyLenientThis] is not specified.)
    auto js_value = vm.this_value();
    if (js_value.is_nullish())
        js_value = &realm.global_object();

    // 2. FIXME: If jsValue is a platform object, then perform a security check, passing jsValue, attribute’s identifier, and "setter".

    // 3. Let validThis be true if jsValue implements target, or false otherwise.
    auto maybe_idl_object = impl_from(vm, js_value);

    // 4. If validThis is false and attribute was not specified with the [LegacyLenientThis] extended attribute, then throw a TypeError.
    idl_object = TRY(maybe_idl_object);

    auto original_steps = [&]() -> JS::ThrowCompletionOr<JS::Value> {
        // 6. Let idlValue be determined as follows:
        // -> Otherwise, idlValue is the result of converting V to an IDL value of attribute’s type.
        auto idl_value = TRY(throw_dom_exception_if_needed(vm, [&] { return [&]() -> JS::ThrowCompletionOr<String> {
        return TRY(WebIDL::to_usv_string(vm, V));
    }(); }));

        // 7. Run the setter steps of attribute with idlObject as this and idlValue as the value.
        auto setter_result = [&]() -> JS::ThrowCompletionOr<void> {
            idl_object->set_attribute_value("src"_utf16_fly_string, attribute_value_to_utf16(idl_value));
    return {};
        }();

        if (setter_result.is_error())
            return setter_result.release_error();

        return JS::js_undefined();
    };

    // 8. Return undefined.
    return TRY([&]() -> decltype(original_steps()) {
        // For [CEReactions]: https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions

        // 1. Push a new element queue onto this object's relevant agent's custom element reactions stack.
        auto& reactions_stack = HTML::relevant_similar_origin_window_agent(*idl_object).custom_element_reactions_stack;
        reactions_stack.element_queue_stack.append({});

        // 2. Run the originally-specified steps for this construct, catching any exceptions. If the steps return a value, let value be the returned value. If they throw an exception, let exception be the thrown exception.
        auto value_or_exception = original_steps();

        // 3. Let queue be the result of popping from this object's relevant agent's custom element reactions stack.
        // 4. Invoke custom element reactions in queue.
        auto queue = reactions_stack.element_queue_stack.take_last();
        Bindings::invoke_custom_element_reactions(queue);

        // 5. If an exception exception was thrown by the original steps, rethrow exception.
        if (value_or_exception.is_error())
            return value_or_exception.release_error();

        // 6. If a value value was returned from the original steps, return value.
        return value_or_exception.release_value();
    }());
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::src_object_setter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::src_object_setter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    // 1. Let V be undefined.
    auto V = JS::js_undefined();

    // 2. If any arguments were passed, then set V to the value of the first argument passed.
    if (vm.argument_count() > 0)
        V = vm.argument(0);

    // 3. Let id be attribute’s identifier.

    // 4. Let idlObject be null.
    [[maybe_unused]] HTML::HTMLMediaElement* idl_object = nullptr;

    // 5. If attribute is a regular attribute:

    // 1. Let jsValue be the this value, if it is not null or undefined, or realm’s global object otherwise. (This will subsequently cause a TypeError in a few steps, if the global object does not implement target and [LegacyLenientThis] is not specified.)
    auto js_value = vm.this_value();
    if (js_value.is_nullish())
        js_value = &realm.global_object();

    // 2. FIXME: If jsValue is a platform object, then perform a security check, passing jsValue, attribute’s identifier, and "setter".

    // 3. Let validThis be true if jsValue implements target, or false otherwise.
    auto maybe_idl_object = impl_from(vm, js_value);

    // 4. If validThis is false and attribute was not specified with the [LegacyLenientThis] extended attribute, then throw a TypeError.
    idl_object = TRY(maybe_idl_object);

    auto original_steps = [&]() -> JS::ThrowCompletionOr<JS::Value> {
        // 6. Let idlValue be determined as follows:
        // -> Otherwise, idlValue is the result of converting V to an IDL value of attribute’s type.
        auto idl_value = TRY(throw_dom_exception_if_needed(vm, [&] { return [&]() -> JS::ThrowCompletionOr<Variant<GC::Ref<MediaSourceExtensions::MediaSource>, GC::Ref<FileAPI::Blob>, Empty>> {
        Variant<GC::Ref<MediaSourceExtensions::MediaSource>, GC::Ref<FileAPI::Blob>, Empty> value;

        if (!V.is_nullish()) {

            value = TRY([&]() -> JS::ThrowCompletionOr<Variant<GC::Ref<MediaSourceExtensions::MediaSource>, GC::Ref<FileAPI::Blob>>> {

        if (V.is_object()) {
            [[maybe_unused]] auto& object = V.as_object();

            if (is<PlatformObject>(object)) {

                if (auto* result = as_if<MediaSourceExtensions::MediaSource>(object))
                    return Variant<GC::Ref<MediaSourceExtensions::MediaSource>, GC::Ref<FileAPI::Blob>> { GC::Ref { *result } };

                if (auto* result = as_if<FileAPI::Blob>(object))
                    return Variant<GC::Ref<MediaSourceExtensions::MediaSource>, GC::Ref<FileAPI::Blob>> { GC::Ref { *result } };
            }
        }

        return vm.throw_completion<JS::TypeError>("No union types matched"_utf16);
    }());
        }
        return value;
    }(); }));

        // 7. Run the setter steps of attribute with idlObject as this and idlValue as the value.
        auto setter_result = [&]() -> JS::ThrowCompletionOr<void> {
            TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->set_src_object(idl_value); }));
    return {};
        }();

        if (setter_result.is_error())
            return setter_result.release_error();

        return JS::js_undefined();
    };

    // 8. Return undefined.
    return TRY(original_steps());
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::cross_origin_setter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::cross_origin_setter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    // 1. Let V be undefined.
    auto V = JS::js_undefined();

    // 2. If any arguments were passed, then set V to the value of the first argument passed.
    if (vm.argument_count() > 0)
        V = vm.argument(0);

    // 3. Let id be attribute’s identifier.

    // 4. Let idlObject be null.
    [[maybe_unused]] HTML::HTMLMediaElement* idl_object = nullptr;

    // 5. If attribute is a regular attribute:

    // 1. Let jsValue be the this value, if it is not null or undefined, or realm’s global object otherwise. (This will subsequently cause a TypeError in a few steps, if the global object does not implement target and [LegacyLenientThis] is not specified.)
    auto js_value = vm.this_value();
    if (js_value.is_nullish())
        js_value = &realm.global_object();

    // 2. FIXME: If jsValue is a platform object, then perform a security check, passing jsValue, attribute’s identifier, and "setter".

    // 3. Let validThis be true if jsValue implements target, or false otherwise.
    auto maybe_idl_object = impl_from(vm, js_value);

    // 4. If validThis is false and attribute was not specified with the [LegacyLenientThis] extended attribute, then throw a TypeError.
    idl_object = TRY(maybe_idl_object);

    auto original_steps = [&]() -> JS::ThrowCompletionOr<JS::Value> {
        // 6. Let idlValue be determined as follows:
        // -> Otherwise, idlValue is the result of converting V to an IDL value of attribute’s type.
        auto idl_value = TRY(throw_dom_exception_if_needed(vm, [&] { return [&]() -> JS::ThrowCompletionOr<Optional<String>> {
        Optional<String> value;

        if (!V.is_nullish()) {

            value = TRY([&]() -> JS::ThrowCompletionOr<String> {
        return TRY(WebIDL::to_string(vm, V));
    }());
        }
        return value;
    }(); }));

        // 7. Run the setter steps of attribute with idlObject as this and idlValue as the value.
        auto setter_result = [&]() -> JS::ThrowCompletionOr<void> {
            if (!idl_value.has_value())
        idl_object->remove_attribute("crossorigin"_utf16_fly_string);
    else
        idl_object->set_attribute_value("crossorigin"_utf16_fly_string, attribute_value_to_utf16(*idl_value));
    return {};
        }();

        if (setter_result.is_error())
            return setter_result.release_error();

        return JS::js_undefined();
    };

    // 8. Return undefined.
    return TRY([&]() -> decltype(original_steps()) {
        // For [CEReactions]: https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions

        // 1. Push a new element queue onto this object's relevant agent's custom element reactions stack.
        auto& reactions_stack = HTML::relevant_similar_origin_window_agent(*idl_object).custom_element_reactions_stack;
        reactions_stack.element_queue_stack.append({});

        // 2. Run the originally-specified steps for this construct, catching any exceptions. If the steps return a value, let value be the returned value. If they throw an exception, let exception be the thrown exception.
        auto value_or_exception = original_steps();

        // 3. Let queue be the result of popping from this object's relevant agent's custom element reactions stack.
        // 4. Invoke custom element reactions in queue.
        auto queue = reactions_stack.element_queue_stack.take_last();
        Bindings::invoke_custom_element_reactions(queue);

        // 5. If an exception exception was thrown by the original steps, rethrow exception.
        if (value_or_exception.is_error())
            return value_or_exception.release_error();

        // 6. If a value value was returned from the original steps, return value.
        return value_or_exception.release_value();
    }());
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::preload_setter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::preload_setter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    // 1. Let V be undefined.
    auto V = JS::js_undefined();

    // 2. If any arguments were passed, then set V to the value of the first argument passed.
    if (vm.argument_count() > 0)
        V = vm.argument(0);

    // 3. Let id be attribute’s identifier.

    // 4. Let idlObject be null.
    [[maybe_unused]] HTML::HTMLMediaElement* idl_object = nullptr;

    // 5. If attribute is a regular attribute:

    // 1. Let jsValue be the this value, if it is not null or undefined, or realm’s global object otherwise. (This will subsequently cause a TypeError in a few steps, if the global object does not implement target and [LegacyLenientThis] is not specified.)
    auto js_value = vm.this_value();
    if (js_value.is_nullish())
        js_value = &realm.global_object();

    // 2. FIXME: If jsValue is a platform object, then perform a security check, passing jsValue, attribute’s identifier, and "setter".

    // 3. Let validThis be true if jsValue implements target, or false otherwise.
    auto maybe_idl_object = impl_from(vm, js_value);

    // 4. If validThis is false and attribute was not specified with the [LegacyLenientThis] extended attribute, then throw a TypeError.
    idl_object = TRY(maybe_idl_object);

    auto original_steps = [&]() -> JS::ThrowCompletionOr<JS::Value> {
        // 6. Let idlValue be determined as follows:
        // -> Otherwise, idlValue is the result of converting V to an IDL value of attribute’s type.
        auto idl_value = TRY(throw_dom_exception_if_needed(vm, [&] { return [&]() -> JS::ThrowCompletionOr<String> {
        return TRY(WebIDL::to_string(vm, V));
    }(); }));

        // 7. Run the setter steps of attribute with idlObject as this and idlValue as the value.
        auto setter_result = [&]() -> JS::ThrowCompletionOr<void> {
            idl_object->set_attribute_value("preload"_utf16_fly_string, attribute_value_to_utf16(idl_value));
    return {};
        }();

        if (setter_result.is_error())
            return setter_result.release_error();

        return JS::js_undefined();
    };

    // 8. Return undefined.
    return TRY([&]() -> decltype(original_steps()) {
        // For [CEReactions]: https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions

        // 1. Push a new element queue onto this object's relevant agent's custom element reactions stack.
        auto& reactions_stack = HTML::relevant_similar_origin_window_agent(*idl_object).custom_element_reactions_stack;
        reactions_stack.element_queue_stack.append({});

        // 2. Run the originally-specified steps for this construct, catching any exceptions. If the steps return a value, let value be the returned value. If they throw an exception, let exception be the thrown exception.
        auto value_or_exception = original_steps();

        // 3. Let queue be the result of popping from this object's relevant agent's custom element reactions stack.
        // 4. Invoke custom element reactions in queue.
        auto queue = reactions_stack.element_queue_stack.take_last();
        Bindings::invoke_custom_element_reactions(queue);

        // 5. If an exception exception was thrown by the original steps, rethrow exception.
        if (value_or_exception.is_error())
            return value_or_exception.release_error();

        // 6. If a value value was returned from the original steps, return value.
        return value_or_exception.release_value();
    }());
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::current_time_setter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::current_time_setter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    // 1. Let V be undefined.
    auto V = JS::js_undefined();

    // 2. If any arguments were passed, then set V to the value of the first argument passed.
    if (vm.argument_count() > 0)
        V = vm.argument(0);

    // 3. Let id be attribute’s identifier.

    // 4. Let idlObject be null.
    [[maybe_unused]] HTML::HTMLMediaElement* idl_object = nullptr;

    // 5. If attribute is a regular attribute:

    // 1. Let jsValue be the this value, if it is not null or undefined, or realm’s global object otherwise. (This will subsequently cause a TypeError in a few steps, if the global object does not implement target and [LegacyLenientThis] is not specified.)
    auto js_value = vm.this_value();
    if (js_value.is_nullish())
        js_value = &realm.global_object();

    // 2. FIXME: If jsValue is a platform object, then perform a security check, passing jsValue, attribute’s identifier, and "setter".

    // 3. Let validThis be true if jsValue implements target, or false otherwise.
    auto maybe_idl_object = impl_from(vm, js_value);

    // 4. If validThis is false and attribute was not specified with the [LegacyLenientThis] extended attribute, then throw a TypeError.
    idl_object = TRY(maybe_idl_object);

    auto original_steps = [&]() -> JS::ThrowCompletionOr<JS::Value> {
        // 6. Let idlValue be determined as follows:
        // -> Otherwise, idlValue is the result of converting V to an IDL value of attribute’s type.
        auto idl_value = TRY(throw_dom_exception_if_needed(vm, [&] { return [&]() -> JS::ThrowCompletionOr<double> {
        auto x = TRY(V.to_double(vm));
        if (isinf(x) || isnan(x))
            return vm.throw_completion<JS::TypeError>(JS::ErrorType::InvalidRestrictedFloatingPointParameter, "currentTime");
        return x;
    }(); }));

        // 7. Run the setter steps of attribute with idlObject as this and idlValue as the value.
        auto setter_result = [&]() -> JS::ThrowCompletionOr<void> {
            TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->set_current_time(idl_value); }));
    return {};
        }();

        if (setter_result.is_error())
            return setter_result.release_error();

        return JS::js_undefined();
    };

    // 8. Return undefined.
    return TRY(original_steps());
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::default_playback_rate_setter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::default_playback_rate_setter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    // 1. Let V be undefined.
    auto V = JS::js_undefined();

    // 2. If any arguments were passed, then set V to the value of the first argument passed.
    if (vm.argument_count() > 0)
        V = vm.argument(0);

    // 3. Let id be attribute’s identifier.

    // 4. Let idlObject be null.
    [[maybe_unused]] HTML::HTMLMediaElement* idl_object = nullptr;

    // 5. If attribute is a regular attribute:

    // 1. Let jsValue be the this value, if it is not null or undefined, or realm’s global object otherwise. (This will subsequently cause a TypeError in a few steps, if the global object does not implement target and [LegacyLenientThis] is not specified.)
    auto js_value = vm.this_value();
    if (js_value.is_nullish())
        js_value = &realm.global_object();

    // 2. FIXME: If jsValue is a platform object, then perform a security check, passing jsValue, attribute’s identifier, and "setter".

    // 3. Let validThis be true if jsValue implements target, or false otherwise.
    auto maybe_idl_object = impl_from(vm, js_value);

    // 4. If validThis is false and attribute was not specified with the [LegacyLenientThis] extended attribute, then throw a TypeError.
    idl_object = TRY(maybe_idl_object);

    auto original_steps = [&]() -> JS::ThrowCompletionOr<JS::Value> {
        // 6. Let idlValue be determined as follows:
        // -> Otherwise, idlValue is the result of converting V to an IDL value of attribute’s type.
        auto idl_value = TRY(throw_dom_exception_if_needed(vm, [&] { return [&]() -> JS::ThrowCompletionOr<double> {
        auto x = TRY(V.to_double(vm));
        if (isinf(x) || isnan(x))
            return vm.throw_completion<JS::TypeError>(JS::ErrorType::InvalidRestrictedFloatingPointParameter, "defaultPlaybackRate");
        return x;
    }(); }));

        // 7. Run the setter steps of attribute with idlObject as this and idlValue as the value.
        auto setter_result = [&]() -> JS::ThrowCompletionOr<void> {
            TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->set_default_playback_rate(idl_value); }));
    return {};
        }();

        if (setter_result.is_error())
            return setter_result.release_error();

        return JS::js_undefined();
    };

    // 8. Return undefined.
    return TRY(original_steps());
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::playback_rate_setter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::playback_rate_setter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    // 1. Let V be undefined.
    auto V = JS::js_undefined();

    // 2. If any arguments were passed, then set V to the value of the first argument passed.
    if (vm.argument_count() > 0)
        V = vm.argument(0);

    // 3. Let id be attribute’s identifier.

    // 4. Let idlObject be null.
    [[maybe_unused]] HTML::HTMLMediaElement* idl_object = nullptr;

    // 5. If attribute is a regular attribute:

    // 1. Let jsValue be the this value, if it is not null or undefined, or realm’s global object otherwise. (This will subsequently cause a TypeError in a few steps, if the global object does not implement target and [LegacyLenientThis] is not specified.)
    auto js_value = vm.this_value();
    if (js_value.is_nullish())
        js_value = &realm.global_object();

    // 2. FIXME: If jsValue is a platform object, then perform a security check, passing jsValue, attribute’s identifier, and "setter".

    // 3. Let validThis be true if jsValue implements target, or false otherwise.
    auto maybe_idl_object = impl_from(vm, js_value);

    // 4. If validThis is false and attribute was not specified with the [LegacyLenientThis] extended attribute, then throw a TypeError.
    idl_object = TRY(maybe_idl_object);

    auto original_steps = [&]() -> JS::ThrowCompletionOr<JS::Value> {
        // 6. Let idlValue be determined as follows:
        // -> Otherwise, idlValue is the result of converting V to an IDL value of attribute’s type.
        auto idl_value = TRY(throw_dom_exception_if_needed(vm, [&] { return [&]() -> JS::ThrowCompletionOr<double> {
        auto x = TRY(V.to_double(vm));
        if (isinf(x) || isnan(x))
            return vm.throw_completion<JS::TypeError>(JS::ErrorType::InvalidRestrictedFloatingPointParameter, "playbackRate");
        return x;
    }(); }));

        // 7. Run the setter steps of attribute with idlObject as this and idlValue as the value.
        auto setter_result = [&]() -> JS::ThrowCompletionOr<void> {
            TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->set_playback_rate(idl_value); }));
    return {};
        }();

        if (setter_result.is_error())
            return setter_result.release_error();

        return JS::js_undefined();
    };

    // 8. Return undefined.
    return TRY(original_steps());
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::autoplay_setter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::autoplay_setter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    // 1. Let V be undefined.
    auto V = JS::js_undefined();

    // 2. If any arguments were passed, then set V to the value of the first argument passed.
    if (vm.argument_count() > 0)
        V = vm.argument(0);

    // 3. Let id be attribute’s identifier.

    // 4. Let idlObject be null.
    [[maybe_unused]] HTML::HTMLMediaElement* idl_object = nullptr;

    // 5. If attribute is a regular attribute:

    // 1. Let jsValue be the this value, if it is not null or undefined, or realm’s global object otherwise. (This will subsequently cause a TypeError in a few steps, if the global object does not implement target and [LegacyLenientThis] is not specified.)
    auto js_value = vm.this_value();
    if (js_value.is_nullish())
        js_value = &realm.global_object();

    // 2. FIXME: If jsValue is a platform object, then perform a security check, passing jsValue, attribute’s identifier, and "setter".

    // 3. Let validThis be true if jsValue implements target, or false otherwise.
    auto maybe_idl_object = impl_from(vm, js_value);

    // 4. If validThis is false and attribute was not specified with the [LegacyLenientThis] extended attribute, then throw a TypeError.
    idl_object = TRY(maybe_idl_object);

    auto original_steps = [&]() -> JS::ThrowCompletionOr<JS::Value> {
        // 6. Let idlValue be determined as follows:
        // -> Otherwise, idlValue is the result of converting V to an IDL value of attribute’s type.
        auto idl_value = TRY(throw_dom_exception_if_needed(vm, [&] { return V.to_boolean(); }));

        // 7. Run the setter steps of attribute with idlObject as this and idlValue as the value.
        auto setter_result = [&]() -> JS::ThrowCompletionOr<void> {
            if (!idl_value)
        idl_object->remove_attribute("autoplay"_utf16_fly_string);
    else
        idl_object->set_attribute_value("autoplay"_utf16_fly_string, Utf16String {});
    return {};
        }();

        if (setter_result.is_error())
            return setter_result.release_error();

        return JS::js_undefined();
    };

    // 8. Return undefined.
    return TRY([&]() -> decltype(original_steps()) {
        // For [CEReactions]: https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions

        // 1. Push a new element queue onto this object's relevant agent's custom element reactions stack.
        auto& reactions_stack = HTML::relevant_similar_origin_window_agent(*idl_object).custom_element_reactions_stack;
        reactions_stack.element_queue_stack.append({});

        // 2. Run the originally-specified steps for this construct, catching any exceptions. If the steps return a value, let value be the returned value. If they throw an exception, let exception be the thrown exception.
        auto value_or_exception = original_steps();

        // 3. Let queue be the result of popping from this object's relevant agent's custom element reactions stack.
        // 4. Invoke custom element reactions in queue.
        auto queue = reactions_stack.element_queue_stack.take_last();
        Bindings::invoke_custom_element_reactions(queue);

        // 5. If an exception exception was thrown by the original steps, rethrow exception.
        if (value_or_exception.is_error())
            return value_or_exception.release_error();

        // 6. If a value value was returned from the original steps, return value.
        return value_or_exception.release_value();
    }());
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::loop_setter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::loop_setter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    // 1. Let V be undefined.
    auto V = JS::js_undefined();

    // 2. If any arguments were passed, then set V to the value of the first argument passed.
    if (vm.argument_count() > 0)
        V = vm.argument(0);

    // 3. Let id be attribute’s identifier.

    // 4. Let idlObject be null.
    [[maybe_unused]] HTML::HTMLMediaElement* idl_object = nullptr;

    // 5. If attribute is a regular attribute:

    // 1. Let jsValue be the this value, if it is not null or undefined, or realm’s global object otherwise. (This will subsequently cause a TypeError in a few steps, if the global object does not implement target and [LegacyLenientThis] is not specified.)
    auto js_value = vm.this_value();
    if (js_value.is_nullish())
        js_value = &realm.global_object();

    // 2. FIXME: If jsValue is a platform object, then perform a security check, passing jsValue, attribute’s identifier, and "setter".

    // 3. Let validThis be true if jsValue implements target, or false otherwise.
    auto maybe_idl_object = impl_from(vm, js_value);

    // 4. If validThis is false and attribute was not specified with the [LegacyLenientThis] extended attribute, then throw a TypeError.
    idl_object = TRY(maybe_idl_object);

    auto original_steps = [&]() -> JS::ThrowCompletionOr<JS::Value> {
        // 6. Let idlValue be determined as follows:
        // -> Otherwise, idlValue is the result of converting V to an IDL value of attribute’s type.
        auto idl_value = TRY(throw_dom_exception_if_needed(vm, [&] { return V.to_boolean(); }));

        // 7. Run the setter steps of attribute with idlObject as this and idlValue as the value.
        auto setter_result = [&]() -> JS::ThrowCompletionOr<void> {
            if (!idl_value)
        idl_object->remove_attribute("loop"_utf16_fly_string);
    else
        idl_object->set_attribute_value("loop"_utf16_fly_string, Utf16String {});
    return {};
        }();

        if (setter_result.is_error())
            return setter_result.release_error();

        return JS::js_undefined();
    };

    // 8. Return undefined.
    return TRY([&]() -> decltype(original_steps()) {
        // For [CEReactions]: https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions

        // 1. Push a new element queue onto this object's relevant agent's custom element reactions stack.
        auto& reactions_stack = HTML::relevant_similar_origin_window_agent(*idl_object).custom_element_reactions_stack;
        reactions_stack.element_queue_stack.append({});

        // 2. Run the originally-specified steps for this construct, catching any exceptions. If the steps return a value, let value be the returned value. If they throw an exception, let exception be the thrown exception.
        auto value_or_exception = original_steps();

        // 3. Let queue be the result of popping from this object's relevant agent's custom element reactions stack.
        // 4. Invoke custom element reactions in queue.
        auto queue = reactions_stack.element_queue_stack.take_last();
        Bindings::invoke_custom_element_reactions(queue);

        // 5. If an exception exception was thrown by the original steps, rethrow exception.
        if (value_or_exception.is_error())
            return value_or_exception.release_error();

        // 6. If a value value was returned from the original steps, return value.
        return value_or_exception.release_value();
    }());
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::controls_setter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::controls_setter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    // 1. Let V be undefined.
    auto V = JS::js_undefined();

    // 2. If any arguments were passed, then set V to the value of the first argument passed.
    if (vm.argument_count() > 0)
        V = vm.argument(0);

    // 3. Let id be attribute’s identifier.

    // 4. Let idlObject be null.
    [[maybe_unused]] HTML::HTMLMediaElement* idl_object = nullptr;

    // 5. If attribute is a regular attribute:

    // 1. Let jsValue be the this value, if it is not null or undefined, or realm’s global object otherwise. (This will subsequently cause a TypeError in a few steps, if the global object does not implement target and [LegacyLenientThis] is not specified.)
    auto js_value = vm.this_value();
    if (js_value.is_nullish())
        js_value = &realm.global_object();

    // 2. FIXME: If jsValue is a platform object, then perform a security check, passing jsValue, attribute’s identifier, and "setter".

    // 3. Let validThis be true if jsValue implements target, or false otherwise.
    auto maybe_idl_object = impl_from(vm, js_value);

    // 4. If validThis is false and attribute was not specified with the [LegacyLenientThis] extended attribute, then throw a TypeError.
    idl_object = TRY(maybe_idl_object);

    auto original_steps = [&]() -> JS::ThrowCompletionOr<JS::Value> {
        // 6. Let idlValue be determined as follows:
        // -> Otherwise, idlValue is the result of converting V to an IDL value of attribute’s type.
        auto idl_value = TRY(throw_dom_exception_if_needed(vm, [&] { return V.to_boolean(); }));

        // 7. Run the setter steps of attribute with idlObject as this and idlValue as the value.
        auto setter_result = [&]() -> JS::ThrowCompletionOr<void> {
            if (!idl_value)
        idl_object->remove_attribute("controls"_utf16_fly_string);
    else
        idl_object->set_attribute_value("controls"_utf16_fly_string, Utf16String {});
    return {};
        }();

        if (setter_result.is_error())
            return setter_result.release_error();

        return JS::js_undefined();
    };

    // 8. Return undefined.
    return TRY([&]() -> decltype(original_steps()) {
        // For [CEReactions]: https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions

        // 1. Push a new element queue onto this object's relevant agent's custom element reactions stack.
        auto& reactions_stack = HTML::relevant_similar_origin_window_agent(*idl_object).custom_element_reactions_stack;
        reactions_stack.element_queue_stack.append({});

        // 2. Run the originally-specified steps for this construct, catching any exceptions. If the steps return a value, let value be the returned value. If they throw an exception, let exception be the thrown exception.
        auto value_or_exception = original_steps();

        // 3. Let queue be the result of popping from this object's relevant agent's custom element reactions stack.
        // 4. Invoke custom element reactions in queue.
        auto queue = reactions_stack.element_queue_stack.take_last();
        Bindings::invoke_custom_element_reactions(queue);

        // 5. If an exception exception was thrown by the original steps, rethrow exception.
        if (value_or_exception.is_error())
            return value_or_exception.release_error();

        // 6. If a value value was returned from the original steps, return value.
        return value_or_exception.release_value();
    }());
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::volume_setter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::volume_setter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    // 1. Let V be undefined.
    auto V = JS::js_undefined();

    // 2. If any arguments were passed, then set V to the value of the first argument passed.
    if (vm.argument_count() > 0)
        V = vm.argument(0);

    // 3. Let id be attribute’s identifier.

    // 4. Let idlObject be null.
    [[maybe_unused]] HTML::HTMLMediaElement* idl_object = nullptr;

    // 5. If attribute is a regular attribute:

    // 1. Let jsValue be the this value, if it is not null or undefined, or realm’s global object otherwise. (This will subsequently cause a TypeError in a few steps, if the global object does not implement target and [LegacyLenientThis] is not specified.)
    auto js_value = vm.this_value();
    if (js_value.is_nullish())
        js_value = &realm.global_object();

    // 2. FIXME: If jsValue is a platform object, then perform a security check, passing jsValue, attribute’s identifier, and "setter".

    // 3. Let validThis be true if jsValue implements target, or false otherwise.
    auto maybe_idl_object = impl_from(vm, js_value);

    // 4. If validThis is false and attribute was not specified with the [LegacyLenientThis] extended attribute, then throw a TypeError.
    idl_object = TRY(maybe_idl_object);

    auto original_steps = [&]() -> JS::ThrowCompletionOr<JS::Value> {
        // 6. Let idlValue be determined as follows:
        // -> Otherwise, idlValue is the result of converting V to an IDL value of attribute’s type.
        auto idl_value = TRY(throw_dom_exception_if_needed(vm, [&] { return [&]() -> JS::ThrowCompletionOr<double> {
        auto x = TRY(V.to_double(vm));
        if (isinf(x) || isnan(x))
            return vm.throw_completion<JS::TypeError>(JS::ErrorType::InvalidRestrictedFloatingPointParameter, "volume");
        return x;
    }(); }));

        // 7. Run the setter steps of attribute with idlObject as this and idlValue as the value.
        auto setter_result = [&]() -> JS::ThrowCompletionOr<void> {
            TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->set_volume(idl_value); }));
    return {};
        }();

        if (setter_result.is_error())
            return setter_result.release_error();

        return JS::js_undefined();
    };

    // 8. Return undefined.
    return TRY(original_steps());
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::muted_setter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::muted_setter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    // 1. Let V be undefined.
    auto V = JS::js_undefined();

    // 2. If any arguments were passed, then set V to the value of the first argument passed.
    if (vm.argument_count() > 0)
        V = vm.argument(0);

    // 3. Let id be attribute’s identifier.

    // 4. Let idlObject be null.
    [[maybe_unused]] HTML::HTMLMediaElement* idl_object = nullptr;

    // 5. If attribute is a regular attribute:

    // 1. Let jsValue be the this value, if it is not null or undefined, or realm’s global object otherwise. (This will subsequently cause a TypeError in a few steps, if the global object does not implement target and [LegacyLenientThis] is not specified.)
    auto js_value = vm.this_value();
    if (js_value.is_nullish())
        js_value = &realm.global_object();

    // 2. FIXME: If jsValue is a platform object, then perform a security check, passing jsValue, attribute’s identifier, and "setter".

    // 3. Let validThis be true if jsValue implements target, or false otherwise.
    auto maybe_idl_object = impl_from(vm, js_value);

    // 4. If validThis is false and attribute was not specified with the [LegacyLenientThis] extended attribute, then throw a TypeError.
    idl_object = TRY(maybe_idl_object);

    auto original_steps = [&]() -> JS::ThrowCompletionOr<JS::Value> {
        // 6. Let idlValue be determined as follows:
        // -> Otherwise, idlValue is the result of converting V to an IDL value of attribute’s type.
        auto idl_value = TRY(throw_dom_exception_if_needed(vm, [&] { return V.to_boolean(); }));

        // 7. Run the setter steps of attribute with idlObject as this and idlValue as the value.
        auto setter_result = [&]() -> JS::ThrowCompletionOr<void> {
            TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->set_muted(idl_value); }));
    return {};
        }();

        if (setter_result.is_error())
            return setter_result.release_error();

        return JS::js_undefined();
    };

    // 8. Return undefined.
    return TRY(original_steps());
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::default_muted_setter)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::default_muted_setter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    // 1. Let V be undefined.
    auto V = JS::js_undefined();

    // 2. If any arguments were passed, then set V to the value of the first argument passed.
    if (vm.argument_count() > 0)
        V = vm.argument(0);

    // 3. Let id be attribute’s identifier.

    // 4. Let idlObject be null.
    [[maybe_unused]] HTML::HTMLMediaElement* idl_object = nullptr;

    // 5. If attribute is a regular attribute:

    // 1. Let jsValue be the this value, if it is not null or undefined, or realm’s global object otherwise. (This will subsequently cause a TypeError in a few steps, if the global object does not implement target and [LegacyLenientThis] is not specified.)
    auto js_value = vm.this_value();
    if (js_value.is_nullish())
        js_value = &realm.global_object();

    // 2. FIXME: If jsValue is a platform object, then perform a security check, passing jsValue, attribute’s identifier, and "setter".

    // 3. Let validThis be true if jsValue implements target, or false otherwise.
    auto maybe_idl_object = impl_from(vm, js_value);

    // 4. If validThis is false and attribute was not specified with the [LegacyLenientThis] extended attribute, then throw a TypeError.
    idl_object = TRY(maybe_idl_object);

    auto original_steps = [&]() -> JS::ThrowCompletionOr<JS::Value> {
        // 6. Let idlValue be determined as follows:
        // -> Otherwise, idlValue is the result of converting V to an IDL value of attribute’s type.
        auto idl_value = TRY(throw_dom_exception_if_needed(vm, [&] { return V.to_boolean(); }));

        // 7. Run the setter steps of attribute with idlObject as this and idlValue as the value.
        auto setter_result = [&]() -> JS::ThrowCompletionOr<void> {
            if (!idl_value)
        idl_object->remove_attribute("muted"_utf16_fly_string);
    else
        idl_object->set_attribute_value("muted"_utf16_fly_string, Utf16String {});
    return {};
        }();

        if (setter_result.is_error())
            return setter_result.release_error();

        return JS::js_undefined();
    };

    // 8. Return undefined.
    return TRY([&]() -> decltype(original_steps()) {
        // For [CEReactions]: https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions

        // 1. Push a new element queue onto this object's relevant agent's custom element reactions stack.
        auto& reactions_stack = HTML::relevant_similar_origin_window_agent(*idl_object).custom_element_reactions_stack;
        reactions_stack.element_queue_stack.append({});

        // 2. Run the originally-specified steps for this construct, catching any exceptions. If the steps return a value, let value be the returned value. If they throw an exception, let exception be the thrown exception.
        auto value_or_exception = original_steps();

        // 3. Let queue be the result of popping from this object's relevant agent's custom element reactions stack.
        // 4. Invoke custom element reactions in queue.
        auto queue = reactions_stack.element_queue_stack.take_last();
        Bindings::invoke_custom_element_reactions(queue);

        // 5. If an exception exception was thrown by the original steps, rethrow exception.
        if (value_or_exception.is_error())
            return value_or_exception.release_error();

        // 6. If a value value was returned from the original steps, return value.
        return value_or_exception.release_value();
    }());
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::load)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::load");
    [[maybe_unused]] auto& realm = *vm.current_realm();
    [[maybe_unused]] HTML::HTMLMediaElement* idl_object = TRY(impl_from(vm));

    [[maybe_unused]] auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->load(); }));
    return JS::js_undefined();
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::can_play_type)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::can_play_type");
    [[maybe_unused]] auto& realm = *vm.current_realm();
    [[maybe_unused]] HTML::HTMLMediaElement* idl_object = TRY(impl_from(vm));

    if (vm.argument_count() < 1)
        return vm.throw_completion<JS::TypeError>(JS::ErrorType::BadArgCountOne, "canPlayType");

    auto arg0 = vm.argument(0);
    auto type = TRY(throw_dom_exception_if_needed(vm, [&] { return [&]() -> JS::ThrowCompletionOr<String> {
        return TRY(WebIDL::to_string(vm, arg0));
    }(); }));

    [[maybe_unused]] auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->can_play_type(type); }));
    return JS::PrimitiveString::create(vm, idl_enum_to_string(R));
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::fast_seek)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::fast_seek");
    [[maybe_unused]] auto& realm = *vm.current_realm();
    [[maybe_unused]] HTML::HTMLMediaElement* idl_object = TRY(impl_from(vm));

    if (vm.argument_count() < 1)
        return vm.throw_completion<JS::TypeError>(JS::ErrorType::BadArgCountOne, "fastSeek");

    auto arg0 = vm.argument(0);
    auto time = TRY(throw_dom_exception_if_needed(vm, [&] { return [&]() -> JS::ThrowCompletionOr<double> {
        auto x = TRY(arg0.to_double(vm));
        if (isinf(x) || isnan(x))
            return vm.throw_completion<JS::TypeError>(JS::ErrorType::InvalidRestrictedFloatingPointParameter, "time");
        return x;
    }(); }));

    [[maybe_unused]] auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->fast_seek(time); }));
    return JS::js_undefined();
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::get_start_date)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::get_start_date");
    [[maybe_unused]] auto& realm = *vm.current_realm();
    [[maybe_unused]] HTML::HTMLMediaElement* idl_object = TRY(impl_from(vm));

    [[maybe_unused]] auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->get_start_date(); }));
    return JS::Value(R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::play)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::play");
    [[maybe_unused]] auto& realm = *vm.current_realm();
    auto steps = [&realm, &vm]() -> JS::ThrowCompletionOr<GC::Ref<WebIDL::Promise>> {
        (void)realm;
    [[maybe_unused]] HTML::HTMLMediaElement* idl_object = TRY(impl_from(vm));

    [[maybe_unused]] auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->play(); }));
        return R;
    };

    auto maybe_R = steps();

    // And then, if an exception E was thrown:
    // 1. If op has a return type that is a promise type, then return ! Call(%Promise.reject%, %Promise%, «E»).
    // 2. Otherwise, end these steps and allow the exception to propagate.
    if (maybe_R.is_throw_completion())
        return WebIDL::create_rejected_promise(realm, maybe_R.error_value())->promise();

    return GC::Ref { as<JS::Promise>(*maybe_R.release_value()->promise()) };
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::pause)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::pause");
    [[maybe_unused]] auto& realm = *vm.current_realm();
    [[maybe_unused]] HTML::HTMLMediaElement* idl_object = TRY(impl_from(vm));

    [[maybe_unused]] auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->pause(); }));
    return JS::js_undefined();
}

JS_DEFINE_NATIVE_FUNCTION(HTMLMediaElementPrototype::add_text_track)
{
    WebIDL::log_trace(vm, "HTMLMediaElementPrototype::add_text_track");
    [[maybe_unused]] auto& realm = *vm.current_realm();
    [[maybe_unused]] HTML::HTMLMediaElement* idl_object = TRY(impl_from(vm));

    if (vm.argument_count() < 1)
        return vm.throw_completion<JS::TypeError>(JS::ErrorType::BadArgCountOne, "addTextTrack");

    auto arg0 = vm.argument(0);
    auto kind = TRY(throw_dom_exception_if_needed(vm, [&] { return convert_to_idl_value_for_text_track_kind(vm, arg0); }));

    auto arg1 = vm.argument(1);
    String label = String {};
    if (!arg1.is_undefined())
        label = TRY(throw_dom_exception_if_needed(vm, [&] { return [&]() -> JS::ThrowCompletionOr<String> {
        return TRY(WebIDL::to_string(vm, arg1));
    }(); }));

    auto arg2 = vm.argument(2);
    String language = String {};
    if (!arg2.is_undefined())
        language = TRY(throw_dom_exception_if_needed(vm, [&] { return [&]() -> JS::ThrowCompletionOr<String> {
        return TRY(WebIDL::to_string(vm, arg2));
    }(); }));

    [[maybe_unused]] auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->add_text_track(kind, label, language); }));
    return JS::Value(R);
}

// https://webidl.spec.whatwg.org/#idl-enumeration
JS::ThrowCompletionOr<Preload> convert_to_idl_value_for_preload(JS::VM& vm, JS::Value value)
{
    // 1. Let S be the result of calling ? ToString(V).
    auto value_as_string = TRY(value.to_utf16_string(vm));

    // 2. If S is not one of E’s enumeration values, then throw a TypeError.
    // 3. Return the enumeration value of type E that is equal to S.
    if (value_as_string == "auto"sv)
        return Preload::Auto;
    if (value_as_string == "none"sv)
        return Preload::None;
    if (value_as_string == "metadata"sv)
        return Preload::Metadata;
    return vm.throw_completion<JS::TypeError>(JS::ErrorType::InvalidEnumerationValue, value_as_string, "Preload");
}

// https://webidl.spec.whatwg.org/#idl-enumeration
Utf16String idl_enum_to_string(Preload value)
{
    // The result of converting an IDL enumeration type value to a JavaScript value is the String value that represents the same sequence of code units as the enumeration value.
    switch (value) {
    case Preload::Auto:
        return "auto"_utf16;
    case Preload::None:
        return "none"_utf16;
    case Preload::Metadata:
        return "metadata"_utf16;
    }
    VERIFY_NOT_REACHED();
}

// https://webidl.spec.whatwg.org/#idl-enumeration
JS::ThrowCompletionOr<CanPlayTypeResult> convert_to_idl_value_for_can_play_type_result(JS::VM& vm, JS::Value value)
{
    // 1. Let S be the result of calling ? ToString(V).
    auto value_as_string = TRY(value.to_utf16_string(vm));

    // 2. If S is not one of E’s enumeration values, then throw a TypeError.
    // 3. Return the enumeration value of type E that is equal to S.
    if (value_as_string == ""sv)
        return CanPlayTypeResult::Empty;
    if (value_as_string == "maybe"sv)
        return CanPlayTypeResult::Maybe;
    if (value_as_string == "probably"sv)
        return CanPlayTypeResult::Probably;
    return vm.throw_completion<JS::TypeError>(JS::ErrorType::InvalidEnumerationValue, value_as_string, "CanPlayTypeResult");
}

// https://webidl.spec.whatwg.org/#idl-enumeration
Utf16String idl_enum_to_string(CanPlayTypeResult value)
{
    // The result of converting an IDL enumeration type value to a JavaScript value is the String value that represents the same sequence of code units as the enumeration value.
    switch (value) {
    case CanPlayTypeResult::Empty:
        return ""_utf16;
    case CanPlayTypeResult::Maybe:
        return "maybe"_utf16;
    case CanPlayTypeResult::Probably:
        return "probably"_utf16;
    }
    VERIFY_NOT_REACHED();
}

} // namespace Web::Bindings