LibJS: Change GetOption AO to accept the options as a concrete Object

This was being verified at runtime anyways, so let the compiler ensure
it. This also matches the GetOption AO in Temporal now.

Userland/Libraries/LibJS/Runtime/Intl/AbstractOperations.cpp

@@ -582,7 +582,7 @@ Array* supported_locales(GlobalObject& global_object, Vector<String> const& requ
         return {};
 
     // 2. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
-    auto matcher = get_option(global_object, options_object, vm.names.localeMatcher, Value::Type::String, { "lookup"sv, "best fit"sv }, "best fit"sv);
+    auto matcher = get_option(global_object, *options_object, vm.names.localeMatcher, Value::Type::String, { "lookup"sv, "best fit"sv }, "best fit"sv);
     if (vm.exception())
         return {};
 
@@ -617,15 +617,13 @@ Object* coerce_options_to_object(GlobalObject& global_object, Value options)
 }
 
 // 9.2.13 GetOption ( options, property, type, values, fallback ), https://tc39.es/ecma402/#sec-getoption
-Value get_option(GlobalObject& global_object, Value options, PropertyName const& property, Value::Type type, Vector<StringView> const& values, Fallback fallback)
+Value get_option(GlobalObject& global_object, Object const& options, PropertyName const& property, Value::Type type, Vector<StringView> const& values, Fallback fallback)
 {
     auto& vm = global_object.vm();
 
     // 1. Assert: Type(options) is Object.
-    VERIFY(options.is_object());
-
     // 2. Let value be ? Get(options, property).
-    auto value = options.get(global_object, property);
+    auto value = options.get(property);
     if (vm.exception())
         return {};
 

Userland/Libraries/LibJS/Runtime/Intl/AbstractOperations.h

@@ -46,7 +46,7 @@ Vector<String> lookup_supported_locales(Vector<String> const& requested_locales)
 Vector<String> best_fit_supported_locales(Vector<String> const& requested_locales);
 Array* supported_locales(GlobalObject&, Vector<String> const& requested_locales, Value options);
 Object* coerce_options_to_object(GlobalObject& global_object, Value options);
-Value get_option(GlobalObject& global_object, Value options, PropertyName const& property, Value::Type type, Vector<StringView> const& values, Fallback fallback);
+Value get_option(GlobalObject& global_object, Object const& options, PropertyName const& property, Value::Type type, Vector<StringView> const& values, Fallback fallback);
 Optional<int> default_number_option(GlobalObject& global_object, Value value, int minimum, int maximum, Optional<int> fallback);
 Optional<int> get_number_option(GlobalObject& global_object, Object& options, PropertyName const& property, int minimum, int maximum, Optional<int> fallback);
 Vector<PatternPartition> partition_pattern(StringView pattern);

Userland/Libraries/LibJS/Runtime/Intl/DisplayNamesConstructor.cpp

@@ -50,8 +50,8 @@ Value DisplayNamesConstructor::construct(FunctionObject& new_target)
     auto& vm = this->vm();
     auto& global_object = this->global_object();
 
-    auto locales = vm.argument(0);
+    auto locale_value = vm.argument(0);
-    auto options = vm.argument(1);
+    auto options_value = vm.argument(1);
 
     // 2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNames.prototype%", « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
     auto* display_names = ordinary_create_from_constructor<DisplayNames>(global_object, new_target, &GlobalObject::intl_display_names_prototype);
@@ -59,18 +59,18 @@ Value DisplayNamesConstructor::construct(FunctionObject& new_target)
         return {};
 
     // 3. Let requestedLocales be ? CanonicalizeLocaleList(locales).
-    auto requested_locales = canonicalize_locale_list(global_object, locales);
+    auto requested_locales = canonicalize_locale_list(global_object, locale_value);
     if (vm.exception())
         return {};
 
     // 4. If options is undefined, throw a TypeError exception.
-    if (options.is_undefined()) {
+    if (options_value.is_undefined()) {
         vm.throw_exception<TypeError>(global_object, ErrorType::IsUndefined, "options"sv);
         return {};
     }
 
     // 5. Set options to ? GetOptionsObject(options).
-    options = Temporal::get_options_object(global_object, options);
+    auto* options = Temporal::get_options_object(global_object, options_value);
     if (vm.exception())
         return {};
 
@@ -80,7 +80,7 @@ Value DisplayNamesConstructor::construct(FunctionObject& new_target)
     // 7. Let localeData be %DisplayNames%.[[LocaleData]].
 
     // 8. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
-    auto matcher = get_option(global_object, options, vm.names.localeMatcher, Value::Type::String, { "lookup"sv, "best fit"sv }, "best fit"sv);
+    auto matcher = get_option(global_object, *options, vm.names.localeMatcher, Value::Type::String, { "lookup"sv, "best fit"sv }, "best fit"sv);
     if (vm.exception())
         return {};
 
@@ -91,7 +91,7 @@ Value DisplayNamesConstructor::construct(FunctionObject& new_target)
     auto result = resolve_locale(requested_locales, opt, {});
 
     // 11. Let style be ? GetOption(options, "style", "string", « "narrow", "short", "long" », "long").
-    auto style = get_option(global_object, options, vm.names.style, Value::Type::String, { "narrow"sv, "short"sv, "long"sv }, "long"sv);
+    auto style = get_option(global_object, *options, vm.names.style, Value::Type::String, { "narrow"sv, "short"sv, "long"sv }, "long"sv);
     if (vm.exception())
         return {};
 
@@ -99,7 +99,7 @@ Value DisplayNamesConstructor::construct(FunctionObject& new_target)
     display_names->set_style(style.as_string().string());
 
     // 13. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency" », undefined).
-    auto type = get_option(global_object, options, vm.names.type, Value::Type::String, { "language"sv, "region"sv, "script"sv, "currency"sv }, Empty {});
+    auto type = get_option(global_object, *options, vm.names.type, Value::Type::String, { "language"sv, "region"sv, "script"sv, "currency"sv }, Empty {});
     if (vm.exception())
         return {};
 
@@ -113,7 +113,7 @@ Value DisplayNamesConstructor::construct(FunctionObject& new_target)
     display_names->set_type(type.as_string().string());
 
     // 16. Let fallback be ? GetOption(options, "fallback", "string", « "code", "none" », "code").
-    auto fallback = get_option(global_object, options, vm.names.fallback, Value::Type::String, { "code"sv, "none"sv }, "code"sv);
+    auto fallback = get_option(global_object, *options, vm.names.fallback, Value::Type::String, { "code"sv, "none"sv }, "code"sv);
     if (vm.exception())
         return {};
 

Userland/Libraries/LibJS/Runtime/Intl/ListFormatConstructor.cpp

@@ -49,8 +49,8 @@ Value ListFormatConstructor::construct(FunctionObject& new_target)
     auto& vm = this->vm();
     auto& global_object = this->global_object();
 
-    auto locales = vm.argument(0);
+    auto locale_value = vm.argument(0);
-    auto options = vm.argument(1);
+    auto options_value = vm.argument(1);
 
     // 2. Let listFormat be ? OrdinaryCreateFromConstructor(NewTarget, "%ListFormat.prototype%", « [[InitializedListFormat]], [[Locale]], [[Type]], [[Style]], [[Templates]] »).
     auto* list_format = ordinary_create_from_constructor<ListFormat>(global_object, new_target, &GlobalObject::intl_list_format_prototype);
@@ -58,12 +58,12 @@ Value ListFormatConstructor::construct(FunctionObject& new_target)
         return {};
 
     // 3. Let requestedLocales be ? CanonicalizeLocaleList(locales).
-    auto requested_locales = canonicalize_locale_list(global_object, locales);
+    auto requested_locales = canonicalize_locale_list(global_object, locale_value);
     if (vm.exception())
         return {};
 
     // 4. Set options to ? GetOptionsObject(options).
-    options = Temporal::get_options_object(global_object, options);
+    auto* options = Temporal::get_options_object(global_object, options_value);
     if (vm.exception())
         return {};
 
@@ -71,7 +71,7 @@ Value ListFormatConstructor::construct(FunctionObject& new_target)
     LocaleOptions opt {};
 
     // 6. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
-    auto matcher = get_option(global_object, options, vm.names.localeMatcher, Value::Type::String, { "lookup"sv, "best fit"sv }, "best fit"sv);
+    auto matcher = get_option(global_object, *options, vm.names.localeMatcher, Value::Type::String, { "lookup"sv, "best fit"sv }, "best fit"sv);
     if (vm.exception())
         return {};
 
@@ -87,7 +87,7 @@ Value ListFormatConstructor::construct(FunctionObject& new_target)
     list_format->set_locale(move(result.locale));
 
     // 11. Let type be ? GetOption(options, "type", "string", « "conjunction", "disjunction", "unit" », "conjunction").
-    auto type = get_option(global_object, options, vm.names.type, Value::Type::String, { "conjunction"sv, "disjunction"sv, "unit"sv }, "conjunction"sv);
+    auto type = get_option(global_object, *options, vm.names.type, Value::Type::String, { "conjunction"sv, "disjunction"sv, "unit"sv }, "conjunction"sv);
     if (vm.exception())
         return {};
 
@@ -95,7 +95,7 @@ Value ListFormatConstructor::construct(FunctionObject& new_target)
     list_format->set_type(type.as_string().string());
 
     // 13. Let style be ? GetOption(options, "style", "string", « "long", "short", "narrow" », "long").
-    auto style = get_option(global_object, options, vm.names.style, Value::Type::String, { "long"sv, "short"sv, "narrow"sv }, "long"sv);
+    auto style = get_option(global_object, *options, vm.names.style, Value::Type::String, { "long"sv, "short"sv, "narrow"sv }, "long"sv);
     if (vm.exception())
         return {};
 

Userland/Libraries/LibJS/Runtime/Intl/LocaleConstructor.cpp

@@ -42,7 +42,7 @@ static Optional<String> get_string_option(GlobalObject& global_object, Object co
 {
     auto& vm = global_object.vm();
 
-    auto option = get_option(global_object, &options, property, Value::Type::String, values, Empty {});
+    auto option = get_option(global_object, options, property, Value::Type::String, values, Empty {});
     if (vm.exception())
         return {};
     if (option.is_undefined())
@@ -274,8 +274,8 @@ Value LocaleConstructor::construct(FunctionObject& new_target)
     auto& vm = this->vm();
     auto& global_object = this->global_object();
 
-    auto tag = vm.argument(0);
+    auto tag_value = vm.argument(0);
-    auto options = vm.argument(1);
+    auto options_value = vm.argument(1);
 
     // 2. Let relevantExtensionKeys be %Locale%.[[RelevantExtensionKeys]].
     auto const& relevant_extension_keys = locale_relevant_extension_keys();
@@ -292,32 +292,32 @@ Value LocaleConstructor::construct(FunctionObject& new_target)
         return {};
 
     // 7. If Type(tag) is not String or Object, throw a TypeError exception.
-    if (!tag.is_string() && !tag.is_object()) {
+    if (!tag_value.is_string() && !tag_value.is_object()) {
         vm.throw_exception<TypeError>(global_object, ErrorType::NotAnObjectOrString, "tag"sv);
         return {};
     }
 
     // 8. If Type(tag) is Object and tag has an [[InitializedLocale]] internal slot, then
-    if (tag.is_object() && is<Locale>(tag.as_object())) {
+    if (tag_value.is_object() && is<Locale>(tag_value.as_object())) {
         // a. Let tag be tag.[[Locale]].
-        auto const& tag_object = static_cast<Locale const&>(tag.as_object());
+        auto const& tag_object = static_cast<Locale const&>(tag_value.as_object());
-        tag = js_string(vm, tag_object.locale());
+        tag_value = js_string(vm, tag_object.locale());
     }
     // 9. Else,
     else {
         // a. Let tag be ? ToString(tag).
-        tag = tag.to_primitive_string(global_object);
+        tag_value = tag_value.to_primitive_string(global_object);
         if (vm.exception())
             return {};
     }
 
     // 10. Set options to ? CoerceOptionsToObject(options).
-    options = coerce_options_to_object(global_object, options);
+    auto* options = coerce_options_to_object(global_object, options_value);
     if (vm.exception())
         return {};
 
     // 11. Set tag to ? ApplyOptionsToTag(tag, options).
-    auto canonicalized_tag = apply_options_to_tag(global_object, tag.as_string().string(), options.as_object());
+    auto canonicalized_tag = apply_options_to_tag(global_object, tag_value.as_string().string(), *options);
     if (vm.exception())
         return {};
 
@@ -328,7 +328,7 @@ Value LocaleConstructor::construct(FunctionObject& new_target)
     // 14. If calendar is not undefined, then
     //     a. If calendar does not match the Unicode Locale Identifier type nonterminal, throw a RangeError exception.
     // 15. Set opt.[[ca]] to calendar.
-    opt.ca = get_string_option(global_object, options.as_object(), vm.names.calendar, Unicode::is_type_identifier);
+    opt.ca = get_string_option(global_object, *options, vm.names.calendar, Unicode::is_type_identifier);
     if (vm.exception())
         return {};
 
@@ -336,24 +336,24 @@ Value LocaleConstructor::construct(FunctionObject& new_target)
     // 17. If collation is not undefined, then
     //     a. If collation does not match the Unicode Locale Identifier type nonterminal, throw a RangeError exception.
     // 18. Set opt.[[co]] to collation.
-    opt.co = get_string_option(global_object, options.as_object(), vm.names.collation, Unicode::is_type_identifier);
+    opt.co = get_string_option(global_object, *options, vm.names.collation, Unicode::is_type_identifier);
     if (vm.exception())
         return {};
 
     // 19. Let hc be ? GetOption(options, "hourCycle", "string", « "h11", "h12", "h23", "h24" », undefined).
     // 20. Set opt.[[hc]] to hc.
-    opt.hc = get_string_option(global_object, options.as_object(), vm.names.hourCycle, nullptr, { "h11"sv, "h12"sv, "h23"sv, "h24"sv });
+    opt.hc = get_string_option(global_object, *options, vm.names.hourCycle, nullptr, { "h11"sv, "h12"sv, "h23"sv, "h24"sv });
     if (vm.exception())
         return {};
 
     // 21. Let kf be ? GetOption(options, "caseFirst", "string", « "upper", "lower", "false" », undefined).
     // 22. Set opt.[[kf]] to kf.
-    opt.kf = get_string_option(global_object, options.as_object(), vm.names.caseFirst, nullptr, { "upper"sv, "lower"sv, "false"sv });
+    opt.kf = get_string_option(global_object, *options, vm.names.caseFirst, nullptr, { "upper"sv, "lower"sv, "false"sv });
     if (vm.exception())
         return {};
 
     // 23. Let kn be ? GetOption(options, "numeric", "boolean", undefined, undefined).
-    auto kn = get_option(global_object, options, vm.names.numeric, Value::Type::Boolean, {}, Empty {});
+    auto kn = get_option(global_object, *options, vm.names.numeric, Value::Type::Boolean, {}, Empty {});
     if (vm.exception())
         return {};
 
@@ -366,7 +366,7 @@ Value LocaleConstructor::construct(FunctionObject& new_target)
     // 27. If numberingSystem is not undefined, then
     //     a. If numberingSystem does not match the Unicode Locale Identifier type nonterminal, throw a RangeError exception.
     // 28. Set opt.[[nu]] to numberingSystem.
-    opt.nu = get_string_option(global_object, options.as_object(), vm.names.numberingSystem, Unicode::is_type_identifier);
+    opt.nu = get_string_option(global_object, *options, vm.names.numberingSystem, Unicode::is_type_identifier);
     if (vm.exception())
         return {};
 

Userland/Libraries/LibJS/Runtime/Intl/NumberFormatConstructor.cpp

@@ -155,7 +155,7 @@ static void set_number_format_unit_options(GlobalObject& global_object, NumberFo
     // 2. Assert: Type(options) is Object.
 
     // 3. Let style be ? GetOption(options, "style", "string", « "decimal", "percent", "currency", "unit" », "decimal").
-    auto style = get_option(global_object, &options, vm.names.style, Value::Type::String, { "decimal"sv, "percent"sv, "currency"sv, "unit"sv }, "decimal"sv);
+    auto style = get_option(global_object, options, vm.names.style, Value::Type::String, { "decimal"sv, "percent"sv, "currency"sv, "unit"sv }, "decimal"sv);
     if (vm.exception())
         return;
 
@@ -163,7 +163,7 @@ static void set_number_format_unit_options(GlobalObject& global_object, NumberFo
     intl_object.set_style(style.as_string().string());
 
     // 5. Let currency be ? GetOption(options, "currency", "string", undefined, undefined).
-    auto currency = get_option(global_object, &options, vm.names.currency, Value::Type::String, {}, Empty {});
+    auto currency = get_option(global_object, options, vm.names.currency, Value::Type::String, {}, Empty {});
     if (vm.exception())
         return;
 
@@ -183,17 +183,17 @@ static void set_number_format_unit_options(GlobalObject& global_object, NumberFo
     }
 
     // 8. Let currencyDisplay be ? GetOption(options, "currencyDisplay", "string", « "code", "symbol", "narrowSymbol", "name" », "symbol").
-    auto currency_display = get_option(global_object, &options, vm.names.currencyDisplay, Value::Type::String, { "code"sv, "symbol"sv, "narrowSymbol"sv, "name"sv }, "symbol"sv);
+    auto currency_display = get_option(global_object, options, vm.names.currencyDisplay, Value::Type::String, { "code"sv, "symbol"sv, "narrowSymbol"sv, "name"sv }, "symbol"sv);
     if (vm.exception())
         return;
 
     // 9. Let currencySign be ? GetOption(options, "currencySign", "string", « "standard", "accounting" », "standard").
-    auto currency_sign = get_option(global_object, &options, vm.names.currencySign, Value::Type::String, { "standard"sv, "accounting"sv }, "standard"sv);
+    auto currency_sign = get_option(global_object, options, vm.names.currencySign, Value::Type::String, { "standard"sv, "accounting"sv }, "standard"sv);
     if (vm.exception())
         return;
 
     // 10. Let unit be ? GetOption(options, "unit", "string", undefined, undefined).
-    auto unit = get_option(global_object, &options, vm.names.unit, Value::Type::String, {}, Empty {});
+    auto unit = get_option(global_object, options, vm.names.unit, Value::Type::String, {}, Empty {});
     if (vm.exception())
         return;
 
@@ -213,7 +213,7 @@ static void set_number_format_unit_options(GlobalObject& global_object, NumberFo
     }
 
     // 13. Let unitDisplay be ? GetOption(options, "unitDisplay", "string", « "short", "narrow", "long" », "short").
-    auto unit_display = get_option(global_object, &options, vm.names.unitDisplay, Value::Type::String, { "short"sv, "narrow"sv, "long"sv }, "short"sv);
+    auto unit_display = get_option(global_object, options, vm.names.unitDisplay, Value::Type::String, { "short"sv, "narrow"sv, "long"sv }, "short"sv);
     if (vm.exception())
         return;
 
@@ -241,17 +241,17 @@ static void set_number_format_unit_options(GlobalObject& global_object, NumberFo
 }
 
 // 15.1.2 InitializeNumberFormat ( numberFormat, locales, options ), https://tc39.es/ecma402/#sec-initializenumberformat
-static NumberFormat* initialize_number_format(GlobalObject& global_object, NumberFormat& number_format, Value locales, Value options)
+static NumberFormat* initialize_number_format(GlobalObject& global_object, NumberFormat& number_format, Value locales_value, Value options_value)
 {
     auto& vm = global_object.vm();
 
     // 1. Let requestedLocales be ? CanonicalizeLocaleList(locales).
-    auto requested_locales = canonicalize_locale_list(global_object, locales);
+    auto requested_locales = canonicalize_locale_list(global_object, locales_value);
     if (vm.exception())
         return {};
 
     // 2. Set options to ? CoerceOptionsToObject(options).
-    options = coerce_options_to_object(global_object, options);
+    auto* options = coerce_options_to_object(global_object, options_value);
     if (vm.exception())
         return {};
 
@@ -259,7 +259,7 @@ static NumberFormat* initialize_number_format(GlobalObject& global_object, Numbe
     LocaleOptions opt {};
 
     // 4. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
-    auto matcher = get_option(global_object, options, vm.names.localeMatcher, Value::Type::String, { "lookup"sv, "best fit"sv }, "best fit"sv);
+    auto matcher = get_option(global_object, *options, vm.names.localeMatcher, Value::Type::String, { "lookup"sv, "best fit"sv }, "best fit"sv);
     if (vm.exception())
         return {};
 
@@ -267,7 +267,7 @@ static NumberFormat* initialize_number_format(GlobalObject& global_object, Numbe
     opt.locale_matcher = matcher;
 
     // 6. Let numberingSystem be ? GetOption(options, "numberingSystem", "string", undefined, undefined).
-    auto numbering_system = get_option(global_object, options, vm.names.numberingSystem, Value::Type::String, {}, Empty {});
+    auto numbering_system = get_option(global_object, *options, vm.names.numberingSystem, Value::Type::String, {}, Empty {});
     if (vm.exception())
         return {};
 
@@ -297,7 +297,7 @@ static NumberFormat* initialize_number_format(GlobalObject& global_object, Numbe
     number_format.set_numbering_system(result.nu.release_value());
 
     // 14. Perform ? SetNumberFormatUnitOptions(numberFormat, options).
-    set_number_format_unit_options(global_object, number_format, options.as_object());
+    set_number_format_unit_options(global_object, number_format, *options);
     if (vm.exception())
         return {};
 
@@ -334,7 +334,7 @@ static NumberFormat* initialize_number_format(GlobalObject& global_object, Numbe
     }
 
     // 18. Let notation be ? GetOption(options, "notation", "string", « "standard", "scientific", "engineering", "compact" », "standard").
-    auto notation = get_option(global_object, options, vm.names.notation, Value::Type::String, { "standard"sv, "scientific"sv, "engineering"sv, "compact"sv }, "standard"sv);
+    auto notation = get_option(global_object, *options, vm.names.notation, Value::Type::String, { "standard"sv, "scientific"sv, "engineering"sv, "compact"sv }, "standard"sv);
     if (vm.exception())
         return {};
 
@@ -342,12 +342,12 @@ static NumberFormat* initialize_number_format(GlobalObject& global_object, Numbe
     number_format.set_notation(notation.as_string().string());
 
     // 20. Perform ? SetNumberFormatDigitOptions(numberFormat, options, mnfdDefault, mxfdDefault, notation).
-    set_number_format_digit_options(global_object, number_format, options.as_object(), default_min_fraction_digits, default_max_fraction_digits, number_format.notation());
+    set_number_format_digit_options(global_object, number_format, *options, default_min_fraction_digits, default_max_fraction_digits, number_format.notation());
     if (vm.exception())
         return {};
 
     // 21. Let compactDisplay be ? GetOption(options, "compactDisplay", "string", « "short", "long" », "short").
-    auto compact_display = get_option(global_object, options, vm.names.compactDisplay, Value::Type::String, { "short"sv, "long"sv }, "short"sv);
+    auto compact_display = get_option(global_object, *options, vm.names.compactDisplay, Value::Type::String, { "short"sv, "long"sv }, "short"sv);
     if (vm.exception())
         return {};
 
@@ -358,7 +358,7 @@ static NumberFormat* initialize_number_format(GlobalObject& global_object, Numbe
     }
 
     // 23. Let useGrouping be ? GetOption(options, "useGrouping", "boolean", undefined, true).
-    auto use_grouping = get_option(global_object, options, vm.names.useGrouping, Value::Type::Boolean, {}, true);
+    auto use_grouping = get_option(global_object, *options, vm.names.useGrouping, Value::Type::Boolean, {}, true);
     if (vm.exception())
         return {};
 
@@ -366,7 +366,7 @@ static NumberFormat* initialize_number_format(GlobalObject& global_object, Numbe
     number_format.set_use_grouping(use_grouping.as_bool());
 
     // 25. Let signDisplay be ? GetOption(options, "signDisplay", "string", « "auto", "never", "always", "exceptZero" », "auto").
-    auto sign_display = get_option(global_object, options, vm.names.signDisplay, Value::Type::String, { "auto"sv, "never"sv, "always"sv, "exceptZero"sv }, "auto"sv);
+    auto sign_display = get_option(global_object, *options, vm.names.signDisplay, Value::Type::String, { "auto"sv, "never"sv, "always"sv, "exceptZero"sv }, "auto"sv);
     if (vm.exception())
         return {};