LibJS: Move Intl.NumberFormat's AOs to its object file

3 files changed, 371 insertions, 364 deletions

diff --git a/Userland/Libraries/LibJS/Runtime/Intl/NumberFormat.cpp b/Userland/Libraries/LibJS/Runtime/Intl/NumberFormat.cpp
index ea6ae93a21..59405b3887 100644
--- a/Userland/Libraries/LibJS/Runtime/Intl/NumberFormat.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Intl/NumberFormat.cpp
@@ -4,7 +4,11 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <LibJS/Runtime/GlobalObject.h>
+#include <LibJS/Runtime/Intl/AbstractOperations.h>
 #include <LibJS/Runtime/Intl/NumberFormat.h>
+#include <LibUnicode/CurrencyCode.h>
+#include <LibUnicode/Locale.h>
 
 namespace JS::Intl {
 
@@ -226,4 +230,366 @@ StringView NumberFormat::sign_display_string() const
     }
 }
 
+static Vector<StringView> const& number_format_relevant_extension_keys()
+{
+    // 15.3.3 Internal slots, https://tc39.es/ecma402/#sec-intl.numberformat-internal-slots
+    // The value of the [[RelevantExtensionKeys]] internal slot is « "nu" ».
+    static Vector<StringView> relevant_extension_keys { "nu"sv };
+    return relevant_extension_keys;
+}
+
+// 15.1.1 SetNumberFormatDigitOptions ( intlObj, options, mnfdDefault, mxfdDefault, notation ), https://tc39.es/ecma402/#sec-setnfdigitoptions
+void set_number_format_digit_options(GlobalObject& global_object, NumberFormat& intl_object, Object const& options, int default_min_fraction_digits, int default_max_fraction_digits, NumberFormat::Notation notation)
+{
+    auto& vm = global_object.vm();
+
+    // 1. Assert: Type(intlObj) is Object.
+    // 2. Assert: Type(options) is Object.
+    // 3. Assert: Type(mnfdDefault) is Number.
+    // 4. Assert: Type(mxfdDefault) is Number.
+
+    // 5. Let mnid be ? GetNumberOption(options, "minimumIntegerDigits,", 1, 21, 1).
+    auto min_integer_digits = get_number_option(global_object, options, vm.names.minimumIntegerDigits, 1, 21, 1);
+    if (vm.exception())
+        return;
+
+    // 6. Let mnfd be ? Get(options, "minimumFractionDigits").
+    auto min_fraction_digits = options.get(vm.names.minimumFractionDigits);
+    if (vm.exception())
+        return;
+
+    // 7. Let mxfd be ? Get(options, "maximumFractionDigits").
+    auto max_fraction_digits = options.get(vm.names.maximumFractionDigits);
+    if (vm.exception())
+        return;
+
+    // 8. Let mnsd be ? Get(options, "minimumSignificantDigits").
+    auto min_significant_digits = options.get(vm.names.minimumSignificantDigits);
+    if (vm.exception())
+        return;
+
+    // 9. Let mxsd be ? Get(options, "maximumSignificantDigits").
+    auto max_significant_digits = options.get(vm.names.maximumSignificantDigits);
+    if (vm.exception())
+        return;
+
+    // 10. Set intlObj.[[MinimumIntegerDigits]] to mnid.
+    intl_object.set_min_integer_digits(*min_integer_digits);
+
+    // 11. If mnsd is not undefined or mxsd is not undefined, then
+    if (!min_significant_digits.is_undefined() || !max_significant_digits.is_undefined()) {
+        // a. Set intlObj.[[RoundingType]] to significantDigits.
+        intl_object.set_rounding_type(NumberFormat::RoundingType::SignificantDigits);
+
+        // b. Let mnsd be ? DefaultNumberOption(mnsd, 1, 21, 1).
+        auto min_digits = default_number_option(global_object, min_significant_digits, 1, 21, 1);
+        if (vm.exception())
+            return;
+
+        // c. Let mxsd be ? DefaultNumberOption(mxsd, mnsd, 21, 21).
+        auto max_digits = default_number_option(global_object, max_significant_digits, *min_digits, 21, 21);
+        if (vm.exception())
+            return;
+
+        // d. Set intlObj.[[MinimumSignificantDigits]] to mnsd.
+        intl_object.set_min_significant_digits(*min_digits);
+
+        // e. Set intlObj.[[MaximumSignificantDigits]] to mxsd.
+        intl_object.set_max_significant_digits(*max_digits);
+    }
+    // 12. Else if mnfd is not undefined or mxfd is not undefined, then
+    else if (!min_fraction_digits.is_undefined() || !max_fraction_digits.is_undefined()) {
+        // a. Set intlObj.[[RoundingType]] to fractionDigits.
+        intl_object.set_rounding_type(NumberFormat::RoundingType::FractionDigits);
+
+        // b. Let mnfd be ? DefaultNumberOption(mnfd, 0, 20, undefined).
+        auto min_digits = default_number_option(global_object, min_fraction_digits, 0, 20, {});
+        if (vm.exception())
+            return;
+
+        // c. Let mxfd be ? DefaultNumberOption(mxfd, 0, 20, undefined).
+        auto max_digits = default_number_option(global_object, max_fraction_digits, 0, 20, {});
+        if (vm.exception())
+            return;
+
+        // d. If mnfd is undefined, set mnfd to min(mnfdDefault, mxfd).
+        if (!min_digits.has_value()) {
+            min_digits = min(default_min_fraction_digits, *max_digits);
+        }
+        // e. Else if mxfd is undefined, set mxfd to max(mxfdDefault, mnfd).
+        else if (!max_digits.has_value()) {
+            max_digits = max(default_max_fraction_digits, *min_digits);
+        }
+        // f. Else if mnfd is greater than mxfd, throw a RangeError exception.
+        else if (*min_digits > *max_digits) {
+            vm.throw_exception<RangeError>(global_object, ErrorType::IntlMinimumExceedsMaximum, *min_digits, *max_digits);
+            return;
+        }
+
+        // g. Set intlObj.[[MinimumFractionDigits]] to mnfd.
+        intl_object.set_min_fraction_digits(*min_digits);
+
+        // h. Set intlObj.[[MaximumFractionDigits]] to mxfd.
+        intl_object.set_max_fraction_digits(*max_digits);
+    }
+    // 13. Else if notation is "compact", then
+    else if (notation == NumberFormat::Notation::Compact) {
+        // a. Set intlObj.[[RoundingType]] to compactRounding.
+        intl_object.set_rounding_type(NumberFormat::RoundingType::CompactRounding);
+
+    }
+    // 14. Else,
+    else {
+        // a. Set intlObj.[[RoundingType]] to fractionDigits.
+        intl_object.set_rounding_type(NumberFormat::RoundingType::FractionDigits);
+
+        // b. Set intlObj.[[MinimumFractionDigits]] to mnfdDefault.
+        intl_object.set_min_fraction_digits(default_min_fraction_digits);
+
+        // c. Set intlObj.[[MaximumFractionDigits]] to mxfdDefault.
+        intl_object.set_max_fraction_digits(default_max_fraction_digits);
+    }
+}
+
+// 15.1.2 InitializeNumberFormat ( numberFormat, locales, options ), https://tc39.es/ecma402/#sec-initializenumberformat
+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_value);
+    if (vm.exception())
+        return {};
+
+    // 2. Set options to ? CoerceOptionsToObject(options).
+    auto* options = coerce_options_to_object(global_object, options_value);
+    if (vm.exception())
+        return {};
+
+    // 3. Let opt be a new Record.
+    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);
+    if (vm.exception())
+        return {};
+
+    // 5. Set opt.[[localeMatcher]] to matcher.
+    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 {});
+    if (vm.exception())
+        return {};
+
+    // 7. If numberingSystem is not undefined, then
+    if (!numbering_system.is_undefined()) {
+        // a. If numberingSystem does not match the Unicode Locale Identifier type nonterminal, throw a RangeError exception.
+        if (!Unicode::is_type_identifier(numbering_system.as_string().string())) {
+            vm.throw_exception<RangeError>(global_object, ErrorType::OptionIsNotValidValue, numbering_system, "numberingSystem"sv);
+            return {};
+        }
+
+        // 8. Set opt.[[nu]] to numberingSystem.
+        opt.nu = numbering_system.as_string().string();
+    }
+
+    // 9. Let localeData be %NumberFormat%.[[LocaleData]].
+    // 10. Let r be ResolveLocale(%NumberFormat%.[[AvailableLocales]], requestedLocales, opt, %NumberFormat%.[[RelevantExtensionKeys]], localeData).
+    auto result = resolve_locale(requested_locales, opt, number_format_relevant_extension_keys());
+
+    // 11. Set numberFormat.[[Locale]] to r.[[locale]].
+    number_format.set_locale(move(result.locale));
+
+    // 12. Set numberFormat.[[DataLocale]] to r.[[dataLocale]].
+    number_format.set_data_locale(move(result.data_locale));
+
+    // 13. Set numberFormat.[[NumberingSystem]] to r.[[nu]].
+    number_format.set_numbering_system(result.nu.release_value());
+
+    // 14. Perform ? SetNumberFormatUnitOptions(numberFormat, options).
+    set_number_format_unit_options(global_object, number_format, *options);
+    if (vm.exception())
+        return {};
+
+    // 15. Let style be numberFormat.[[Style]].
+    auto style = number_format.style();
+
+    int default_min_fraction_digits = 0;
+    int default_max_fraction_digits = 0;
+
+    // 16. If style is "currency", then
+    if (style == NumberFormat::Style::Currency) {
+        // a. Let currency be numberFormat.[[Currency]].
+        auto const& currency = number_format.currency();
+
+        // b. Let cDigits be CurrencyDigits(currency).
+        int digits = currency_digits(currency);
+
+        // c. Let mnfdDefault be cDigits.
+        default_min_fraction_digits = digits;
+
+        // d. Let mxfdDefault be cDigits.
+        default_max_fraction_digits = digits;
+    }
+    // 17. Else,
+    else {
+        // a. Let mnfdDefault be 0.
+        default_min_fraction_digits = 0;
+
+        // b. If style is "percent", then
+        //     i. Let mxfdDefault be 0.
+        // c. Else,
+        //     i. Let mxfdDefault be 3.
+        default_max_fraction_digits = style == NumberFormat::Style::Percent ? 0 : 3;
+    }
+
+    // 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);
+    if (vm.exception())
+        return {};
+
+    // 19. Set numberFormat.[[Notation]] to notation.
+    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, 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);
+    if (vm.exception())
+        return {};
+
+    // 22. If notation is "compact", then
+    if (number_format.notation() == NumberFormat::Notation::Compact) {
+        // a. Set numberFormat.[[CompactDisplay]] to compactDisplay.
+        number_format.set_compact_display(compact_display.as_string().string());
+    }
+
+    // 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);
+    if (vm.exception())
+        return {};
+
+    // 24. Set numberFormat.[[UseGrouping]] to useGrouping.
+    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);
+    if (vm.exception())
+        return {};
+
+    // 26. Set numberFormat.[[SignDisplay]] to signDisplay.
+    number_format.set_sign_display(sign_display.as_string().string());
+
+    // 27. Return numberFormat.
+    return &number_format;
+}
+
+// 15.1.3 CurrencyDigits ( currency ), https://tc39.es/ecma402/#sec-currencydigits
+int currency_digits(StringView currency)
+{
+    // 1. If the ISO 4217 currency and funds code list contains currency as an alphabetic code, return the minor
+    //    unit value corresponding to the currency from the list; otherwise, return 2.
+    if (auto currency_code = Unicode::get_currency_code(currency); currency_code.has_value())
+        return currency_code->minor_unit.value_or(2);
+    return 2;
+}
+
+// 15.1.13 SetNumberFormatUnitOptions ( intlObj, options ), https://tc39.es/ecma402/#sec-setnumberformatunitoptions
+void set_number_format_unit_options(GlobalObject& global_object, NumberFormat& intl_object, Object const& options)
+{
+    auto& vm = global_object.vm();
+
+    // 1. Assert: Type(intlObj) is Object.
+    // 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);
+    if (vm.exception())
+        return;
+
+    // 4. Set intlObj.[[Style]] to style.
+    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 {});
+    if (vm.exception())
+        return;
+
+    // 6. If currency is undefined, then
+    if (currency.is_undefined()) {
+        // a. If style is "currency", throw a TypeError exception.
+        if (intl_object.style() == NumberFormat::Style::Currency) {
+            vm.throw_exception<TypeError>(global_object, ErrorType::IntlOptionUndefined, "currency"sv, "style"sv, style);
+            return;
+        }
+    }
+    // 7. Else,
+    //     a. If the result of IsWellFormedCurrencyCode(currency) is false, throw a RangeError exception.
+    else if (!is_well_formed_currency_code(currency.as_string().string())) {
+        vm.throw_exception<RangeError>(global_object, ErrorType::OptionIsNotValidValue, currency, "currency"sv);
+        return;
+    }
+
+    // 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);
+    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);
+    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 {});
+    if (vm.exception())
+        return;
+
+    // 11. If unit is undefined, then
+    if (unit.is_undefined()) {
+        // a. If style is "unit", throw a TypeError exception.
+        if (intl_object.style() == NumberFormat::Style::Unit) {
+            vm.throw_exception<TypeError>(global_object, ErrorType::IntlOptionUndefined, "unit"sv, "style"sv, style);
+            return;
+        }
+    }
+    // 12. Else,
+    //     a. If the result of IsWellFormedUnitIdentifier(unit) is false, throw a RangeError exception.
+    else if (!is_well_formed_unit_identifier(unit.as_string().string())) {
+        vm.throw_exception<RangeError>(global_object, ErrorType::OptionIsNotValidValue, unit, "unit"sv);
+        return;
+    }
+
+    // 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);
+    if (vm.exception())
+        return;
+
+    // 14. If style is "currency", then
+    if (intl_object.style() == NumberFormat::Style::Currency) {
+        // a. Let currency be the result of converting currency to upper case as specified in 6.1.
+        // b. Set intlObj.[[Currency]] to currency.
+        intl_object.set_currency(currency.as_string().string().to_uppercase());
+
+        // c. Set intlObj.[[CurrencyDisplay]] to currencyDisplay.
+        intl_object.set_currency_display(currency_display.as_string().string());
+
+        // d. Set intlObj.[[CurrencySign]] to currencySign.
+        intl_object.set_currency_sign(currency_sign.as_string().string());
+    }
+
+    // 15. If style is "unit", then
+    if (intl_object.style() == NumberFormat::Style::Unit) {
+        // a. Set intlObj.[[Unit]] to unit.
+        intl_object.set_unit(unit.as_string().string());
+
+        // b. Set intlObj.[[UnitDisplay]] to unitDisplay.
+        intl_object.set_unit_display(unit_display.as_string().string());
+    }
+}
+
 }
diff --git a/Userland/Libraries/LibJS/Runtime/Intl/NumberFormat.h b/Userland/Libraries/LibJS/Runtime/Intl/NumberFormat.h
index e4187c9e69..93613706e2 100644
--- a/Userland/Libraries/LibJS/Runtime/Intl/NumberFormat.h
+++ b/Userland/Libraries/LibJS/Runtime/Intl/NumberFormat.h
@@ -170,4 +170,9 @@ private:
     SignDisplay m_sign_display { SignDisplay::Invalid };    // [[SignDisplay]]
 };
 
+void set_number_format_digit_options(GlobalObject& global_object, NumberFormat& intl_object, Object const& options, int default_min_fraction_digits, int default_max_fraction_digits, NumberFormat::Notation notation);
+NumberFormat* initialize_number_format(GlobalObject& global_object, NumberFormat& number_format, Value locales_value, Value options_value);
+int currency_digits(StringView currency);
+void set_number_format_unit_options(GlobalObject& global_object, NumberFormat& intl_object, Object const& options);
+
 }
diff --git a/Userland/Libraries/LibJS/Runtime/Intl/NumberFormatConstructor.cpp b/Userland/Libraries/LibJS/Runtime/Intl/NumberFormatConstructor.cpp
index f09393b26f..43d6bc59cf 100644
--- a/Userland/Libraries/LibJS/Runtime/Intl/NumberFormatConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Intl/NumberFormatConstructor.cpp
@@ -10,373 +10,9 @@
 #include <LibJS/Runtime/Intl/AbstractOperations.h>
 #include <LibJS/Runtime/Intl/NumberFormat.h>
 #include <LibJS/Runtime/Intl/NumberFormatConstructor.h>
-#include <LibUnicode/CurrencyCode.h>
-#include <LibUnicode/Locale.h>
 
 namespace JS::Intl {
 
-static Vector<StringView> const& number_format_relevant_extension_keys()
-{
-    // 15.3.3 Internal slots, https://tc39.es/ecma402/#sec-intl.numberformat-internal-slots
-    // The value of the [[RelevantExtensionKeys]] internal slot is « "nu" ».
-    static Vector<StringView> relevant_extension_keys { "nu"sv };
-    return relevant_extension_keys;
-}
-
-// 15.1.1 SetNumberFormatDigitOptions ( intlObj, options, mnfdDefault, mxfdDefault, notation ), https://tc39.es/ecma402/#sec-setnfdigitoptions
-static void set_number_format_digit_options(GlobalObject& global_object, NumberFormat& intl_object, Object const& options, int default_min_fraction_digits, int default_max_fraction_digits, NumberFormat::Notation notation)
-{
-    auto& vm = global_object.vm();
-
-    // 1. Assert: Type(intlObj) is Object.
-    // 2. Assert: Type(options) is Object.
-    // 3. Assert: Type(mnfdDefault) is Number.
-    // 4. Assert: Type(mxfdDefault) is Number.
-
-    // 5. Let mnid be ? GetNumberOption(options, "minimumIntegerDigits,", 1, 21, 1).
-    auto min_integer_digits = get_number_option(global_object, options, vm.names.minimumIntegerDigits, 1, 21, 1);
-    if (vm.exception())
-        return;
-
-    // 6. Let mnfd be ? Get(options, "minimumFractionDigits").
-    auto min_fraction_digits = options.get(vm.names.minimumFractionDigits);
-    if (vm.exception())
-        return;
-
-    // 7. Let mxfd be ? Get(options, "maximumFractionDigits").
-    auto max_fraction_digits = options.get(vm.names.maximumFractionDigits);
-    if (vm.exception())
-        return;
-
-    // 8. Let mnsd be ? Get(options, "minimumSignificantDigits").
-    auto min_significant_digits = options.get(vm.names.minimumSignificantDigits);
-    if (vm.exception())
-        return;
-
-    // 9. Let mxsd be ? Get(options, "maximumSignificantDigits").
-    auto max_significant_digits = options.get(vm.names.maximumSignificantDigits);
-    if (vm.exception())
-        return;
-
-    // 10. Set intlObj.[[MinimumIntegerDigits]] to mnid.
-    intl_object.set_min_integer_digits(*min_integer_digits);
-
-    // 11. If mnsd is not undefined or mxsd is not undefined, then
-    if (!min_significant_digits.is_undefined() || !max_significant_digits.is_undefined()) {
-        // a. Set intlObj.[[RoundingType]] to significantDigits.
-        intl_object.set_rounding_type(NumberFormat::RoundingType::SignificantDigits);
-
-        // b. Let mnsd be ? DefaultNumberOption(mnsd, 1, 21, 1).
-        auto min_digits = default_number_option(global_object, min_significant_digits, 1, 21, 1);
-        if (vm.exception())
-            return;
-
-        // c. Let mxsd be ? DefaultNumberOption(mxsd, mnsd, 21, 21).
-        auto max_digits = default_number_option(global_object, max_significant_digits, *min_digits, 21, 21);
-        if (vm.exception())
-            return;
-
-        // d. Set intlObj.[[MinimumSignificantDigits]] to mnsd.
-        intl_object.set_min_significant_digits(*min_digits);
-
-        // e. Set intlObj.[[MaximumSignificantDigits]] to mxsd.
-        intl_object.set_max_significant_digits(*max_digits);
-    }
-    // 12. Else if mnfd is not undefined or mxfd is not undefined, then
-    else if (!min_fraction_digits.is_undefined() || !max_fraction_digits.is_undefined()) {
-        // a. Set intlObj.[[RoundingType]] to fractionDigits.
-        intl_object.set_rounding_type(NumberFormat::RoundingType::FractionDigits);
-
-        // b. Let mnfd be ? DefaultNumberOption(mnfd, 0, 20, undefined).
-        auto min_digits = default_number_option(global_object, min_fraction_digits, 0, 20, {});
-        if (vm.exception())
-            return;
-
-        // c. Let mxfd be ? DefaultNumberOption(mxfd, 0, 20, undefined).
-        auto max_digits = default_number_option(global_object, max_fraction_digits, 0, 20, {});
-        if (vm.exception())
-            return;
-
-        // d. If mnfd is undefined, set mnfd to min(mnfdDefault, mxfd).
-        if (!min_digits.has_value()) {
-            min_digits = min(default_min_fraction_digits, *max_digits);
-        }
-        // e. Else if mxfd is undefined, set mxfd to max(mxfdDefault, mnfd).
-        else if (!max_digits.has_value()) {
-            max_digits = max(default_max_fraction_digits, *min_digits);
-        }
-        // f. Else if mnfd is greater than mxfd, throw a RangeError exception.
-        else if (*min_digits > *max_digits) {
-            vm.throw_exception<RangeError>(global_object, ErrorType::IntlMinimumExceedsMaximum, *min_digits, *max_digits);
-            return;
-        }
-
-        // g. Set intlObj.[[MinimumFractionDigits]] to mnfd.
-        intl_object.set_min_fraction_digits(*min_digits);
-
-        // h. Set intlObj.[[MaximumFractionDigits]] to mxfd.
-        intl_object.set_max_fraction_digits(*max_digits);
-    }
-    // 13. Else if notation is "compact", then
-    else if (notation == NumberFormat::Notation::Compact) {
-        // a. Set intlObj.[[RoundingType]] to compactRounding.
-        intl_object.set_rounding_type(NumberFormat::RoundingType::CompactRounding);
-
-    }
-    // 14. Else,
-    else {
-        // a. Set intlObj.[[RoundingType]] to fractionDigits.
-        intl_object.set_rounding_type(NumberFormat::RoundingType::FractionDigits);
-
-        // b. Set intlObj.[[MinimumFractionDigits]] to mnfdDefault.
-        intl_object.set_min_fraction_digits(default_min_fraction_digits);
-
-        // c. Set intlObj.[[MaximumFractionDigits]] to mxfdDefault.
-        intl_object.set_max_fraction_digits(default_max_fraction_digits);
-    }
-}
-
-// 15.1.3 CurrencyDigits ( currency ), https://tc39.es/ecma402/#sec-currencydigits
-static int currency_digits(StringView currency)
-{
-    // 1. If the ISO 4217 currency and funds code list contains currency as an alphabetic code, return the minor
-    //    unit value corresponding to the currency from the list; otherwise, return 2.
-    if (auto currency_code = Unicode::get_currency_code(currency); currency_code.has_value())
-        return currency_code->minor_unit.value_or(2);
-    return 2;
-}
-
-// 15.1.13 SetNumberFormatUnitOptions ( intlObj, options ), https://tc39.es/ecma402/#sec-setnumberformatunitoptions
-static void set_number_format_unit_options(GlobalObject& global_object, NumberFormat& intl_object, Object const& options)
-{
-    auto& vm = global_object.vm();
-
-    // 1. Assert: Type(intlObj) is Object.
-    // 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);
-    if (vm.exception())
-        return;
-
-    // 4. Set intlObj.[[Style]] to style.
-    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 {});
-    if (vm.exception())
-        return;
-
-    // 6. If currency is undefined, then
-    if (currency.is_undefined()) {
-        // a. If style is "currency", throw a TypeError exception.
-        if (intl_object.style() == NumberFormat::Style::Currency) {
-            vm.throw_exception<TypeError>(global_object, ErrorType::IntlOptionUndefined, "currency"sv, "style"sv, style);
-            return;
-        }
-    }
-    // 7. Else,
-    //     a. If the result of IsWellFormedCurrencyCode(currency) is false, throw a RangeError exception.
-    else if (!is_well_formed_currency_code(currency.as_string().string())) {
-        vm.throw_exception<RangeError>(global_object, ErrorType::OptionIsNotValidValue, currency, "currency"sv);
-        return;
-    }
-
-    // 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);
-    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);
-    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 {});
-    if (vm.exception())
-        return;
-
-    // 11. If unit is undefined, then
-    if (unit.is_undefined()) {
-        // a. If style is "unit", throw a TypeError exception.
-        if (intl_object.style() == NumberFormat::Style::Unit) {
-            vm.throw_exception<TypeError>(global_object, ErrorType::IntlOptionUndefined, "unit"sv, "style"sv, style);
-            return;
-        }
-    }
-    // 12. Else,
-    //     a. If the result of IsWellFormedUnitIdentifier(unit) is false, throw a RangeError exception.
-    else if (!is_well_formed_unit_identifier(unit.as_string().string())) {
-        vm.throw_exception<RangeError>(global_object, ErrorType::OptionIsNotValidValue, unit, "unit"sv);
-        return;
-    }
-
-    // 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);
-    if (vm.exception())
-        return;
-
-    // 14. If style is "currency", then
-    if (intl_object.style() == NumberFormat::Style::Currency) {
-        // a. Let currency be the result of converting currency to upper case as specified in 6.1.
-        // b. Set intlObj.[[Currency]] to currency.
-        intl_object.set_currency(currency.as_string().string().to_uppercase());
-
-        // c. Set intlObj.[[CurrencyDisplay]] to currencyDisplay.
-        intl_object.set_currency_display(currency_display.as_string().string());
-
-        // d. Set intlObj.[[CurrencySign]] to currencySign.
-        intl_object.set_currency_sign(currency_sign.as_string().string());
-    }
-
-    // 15. If style is "unit", then
-    if (intl_object.style() == NumberFormat::Style::Unit) {
-        // a. Set intlObj.[[Unit]] to unit.
-        intl_object.set_unit(unit.as_string().string());
-
-        // b. Set intlObj.[[UnitDisplay]] to unitDisplay.
-        intl_object.set_unit_display(unit_display.as_string().string());
-    }
-}
-
-// 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, Value options_value)
-{
-    auto& vm = global_object.vm();
-
-    // 1. Let requestedLocales be ? CanonicalizeLocaleList(locales).
-    auto requested_locales = canonicalize_locale_list(global_object, locales_value);
-    if (vm.exception())
-        return {};
-
-    // 2. Set options to ? CoerceOptionsToObject(options).
-    auto* options = coerce_options_to_object(global_object, options_value);
-    if (vm.exception())
-        return {};
-
-    // 3. Let opt be a new Record.
-    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);
-    if (vm.exception())
-        return {};
-
-    // 5. Set opt.[[localeMatcher]] to matcher.
-    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 {});
-    if (vm.exception())
-        return {};
-
-    // 7. If numberingSystem is not undefined, then
-    if (!numbering_system.is_undefined()) {
-        // a. If numberingSystem does not match the Unicode Locale Identifier type nonterminal, throw a RangeError exception.
-        if (!Unicode::is_type_identifier(numbering_system.as_string().string())) {
-            vm.throw_exception<RangeError>(global_object, ErrorType::OptionIsNotValidValue, numbering_system, "numberingSystem"sv);
-            return {};
-        }
-
-        // 8. Set opt.[[nu]] to numberingSystem.
-        opt.nu = numbering_system.as_string().string();
-    }
-
-    // 9. Let localeData be %NumberFormat%.[[LocaleData]].
-    // 10. Let r be ResolveLocale(%NumberFormat%.[[AvailableLocales]], requestedLocales, opt, %NumberFormat%.[[RelevantExtensionKeys]], localeData).
-    auto result = resolve_locale(requested_locales, opt, number_format_relevant_extension_keys());
-
-    // 11. Set numberFormat.[[Locale]] to r.[[locale]].
-    number_format.set_locale(move(result.locale));
-
-    // 12. Set numberFormat.[[DataLocale]] to r.[[dataLocale]].
-    number_format.set_data_locale(move(result.data_locale));
-
-    // 13. Set numberFormat.[[NumberingSystem]] to r.[[nu]].
-    number_format.set_numbering_system(result.nu.release_value());
-
-    // 14. Perform ? SetNumberFormatUnitOptions(numberFormat, options).
-    set_number_format_unit_options(global_object, number_format, *options);
-    if (vm.exception())
-        return {};
-
-    // 15. Let style be numberFormat.[[Style]].
-    auto style = number_format.style();
-
-    int default_min_fraction_digits = 0;
-    int default_max_fraction_digits = 0;
-
-    // 16. If style is "currency", then
-    if (style == NumberFormat::Style::Currency) {
-        // a. Let currency be numberFormat.[[Currency]].
-        auto const& currency = number_format.currency();
-
-        // b. Let cDigits be CurrencyDigits(currency).
-        int digits = currency_digits(currency);
-
-        // c. Let mnfdDefault be cDigits.
-        default_min_fraction_digits = digits;
-
-        // d. Let mxfdDefault be cDigits.
-        default_max_fraction_digits = digits;
-    }
-    // 17. Else,
-    else {
-        // a. Let mnfdDefault be 0.
-        default_min_fraction_digits = 0;
-
-        // b. If style is "percent", then
-        //     i. Let mxfdDefault be 0.
-        // c. Else,
-        //     i. Let mxfdDefault be 3.
-        default_max_fraction_digits = style == NumberFormat::Style::Percent ? 0 : 3;
-    }
-
-    // 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);
-    if (vm.exception())
-        return {};
-
-    // 19. Set numberFormat.[[Notation]] to notation.
-    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, 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);
-    if (vm.exception())
-        return {};
-
-    // 22. If notation is "compact", then
-    if (number_format.notation() == NumberFormat::Notation::Compact) {
-        // a. Set numberFormat.[[CompactDisplay]] to compactDisplay.
-        number_format.set_compact_display(compact_display.as_string().string());
-    }
-
-    // 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);
-    if (vm.exception())
-        return {};
-
-    // 24. Set numberFormat.[[UseGrouping]] to useGrouping.
-    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);
-    if (vm.exception())
-        return {};
-
-    // 26. Set numberFormat.[[SignDisplay]] to signDisplay.
-    number_format.set_sign_display(sign_display.as_string().string());
-
-    // 27. Return numberFormat.
-    return &number_format;
-}
-
 // 15.2 The Intl.NumberFormat Constructor, https://tc39.es/ecma402/#sec-intl-numberformat-constructor
 NumberFormatConstructor::NumberFormatConstructor(GlobalObject& global_object)
     : NativeFunction(vm().names.NumberFormat.as_string(), *global_object.function_prototype())