diff --git a/Userland/Libraries/LibJS/Runtime/Intl/AbstractOperations.cpp b/Userland/Libraries/LibJS/Runtime/Intl/AbstractOperations.cpp
index 6844758727..730ee19d0c 100644
--- a/Userland/Libraries/LibJS/Runtime/Intl/AbstractOperations.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Intl/AbstractOperations.cpp
@@ -201,7 +201,7 @@ ThrowCompletionOr<Vector<String>> canonicalize_locale_list(GlobalObject& global_
     Object* object = nullptr;
     // 3. If Type(locales) is String or Type(locales) is Object and locales has an [[InitializedLocale]] internal slot, then
     if (locales.is_string() || (locales.is_object() && is<Locale>(locales.as_object()))) {
-        // a. Let O be CreateArrayFromList(« locales »).
+        // a. Let O be ! CreateArrayFromList(« locales »).
         object = Array::create_from(global_object, { locales });
     }
     // 4. Else,
@@ -245,12 +245,12 @@ ThrowCompletionOr<Vector<String>> canonicalize_locale_list(GlobalObject& global_
                 tag = TRY(key_value.to_string(global_object));
             }
 
-            // v. If IsStructurallyValidLanguageTag(tag) is false, throw a RangeError exception.
+            // v. If ! IsStructurallyValidLanguageTag(tag) is false, throw a RangeError exception.
             auto locale_id = is_structurally_valid_language_tag(tag);
             if (!locale_id.has_value())
                 return vm.throw_completion<RangeError>(global_object, ErrorType::IntlInvalidLanguageTag, tag);
 
-            // vi. Let canonicalizedTag be CanonicalizeUnicodeLocaleId(tag).
+            // vi. Let canonicalizedTag be ! CanonicalizeUnicodeLocaleId(tag).
             auto canonicalized_tag = JS::Intl::canonicalize_unicode_locale_id(*locale_id);
 
             // vii. If canonicalizedTag is not an element of seen, append canonicalizedTag as the last element of seen.
@@ -310,7 +310,7 @@ static MatcherResult lookup_matcher(Vector<String> const& requested_locales)
         auto extensions = locale_id->remove_extension_type<Unicode::LocaleExtension>();
         auto no_extensions_locale = locale_id->to_string();
 
-        // b. Let availableLocale be BestAvailableLocale(availableLocales, noExtensionsLocale).
+        // b. Let availableLocale be ! BestAvailableLocale(availableLocales, noExtensionsLocale).
         auto available_locale = best_available_locale(no_extensions_locale);
 
         // c. If availableLocale is not undefined, then
@@ -330,7 +330,7 @@ static MatcherResult lookup_matcher(Vector<String> const& requested_locales)
         }
     }
 
-    // 3. Let defLocale be DefaultLocale().
+    // 3. Let defLocale be ! DefaultLocale().
     // 4. Set result.[[locale]] to defLocale.
     result.locale = Unicode::default_locale();
 
@@ -386,12 +386,12 @@ LocaleResult resolve_locale(Vector<String> const& requested_locales, LocaleOptio
 
     // 2. If matcher is "lookup", then
     if (matcher.is_string() && (matcher.as_string().string() == "lookup"sv)) {
-        // a. Let r be LookupMatcher(availableLocales, requestedLocales).
+        // a. Let r be ! LookupMatcher(availableLocales, requestedLocales).
         matcher_result = lookup_matcher(requested_locales);
     }
     // 3. Else,
     else {
-        // a. Let r be BestFitMatcher(availableLocales, requestedLocales).
+        // a. Let r be ! BestFitMatcher(availableLocales, requestedLocales).
         matcher_result = best_fit_matcher(requested_locales);
     }
 
@@ -540,7 +540,7 @@ Vector<String> lookup_supported_locales(Vector<String> const& requested_locales)
         locale_id->remove_extension_type<Unicode::LocaleExtension>();
         auto no_extensions_locale = locale_id->to_string();
 
-        // b. Let availableLocale be BestAvailableLocale(availableLocales, noExtensionsLocale).
+        // b. Let availableLocale be ! BestAvailableLocale(availableLocales, noExtensionsLocale).
         auto available_locale = best_available_locale(no_extensions_locale);
 
         // c. If availableLocale is not undefined, append locale to the end of subset.
@@ -588,7 +588,7 @@ ThrowCompletionOr<Array*> supported_locales(GlobalObject& global_object, Vector<
         supported_locales = lookup_supported_locales(requested_locales);
     }
 
-    // 5. Return CreateArrayFromList(supportedLocales).
+    // 5. Return ! CreateArrayFromList(supportedLocales).
     return Array::create_from<String>(global_object, supported_locales, [&vm](auto& locale) { return js_string(vm, locale); });
 }
 
diff --git a/Userland/Libraries/LibJS/Runtime/Intl/DateTimeFormat.cpp b/Userland/Libraries/LibJS/Runtime/Intl/DateTimeFormat.cpp
index 0a545af792..93e13dbddb 100644
--- a/Userland/Libraries/LibJS/Runtime/Intl/DateTimeFormat.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Intl/DateTimeFormat.cpp
@@ -72,7 +72,7 @@ ThrowCompletionOr<Object*> to_date_time_options(GlobalObject& global_object, Val
     if (!options_value.is_undefined())
         options = TRY(options_value.to_object(global_object));
 
-    // 2. Let options be OrdinaryObjectCreate(options).
+    // 2. Let options be ! OrdinaryObjectCreate(options).
     options = Object::create(global_object, options);
 
     // 3. Let needDefaults be true.
@@ -524,7 +524,7 @@ ThrowCompletionOr<Vector<PatternPartition>> format_date_time_pattern(GlobalObjec
         return static_cast<NumberFormat*>(number_format);
     };
 
-    // 4. Let nfOptions be OrdinaryObjectCreate(null).
+    // 4. Let nfOptions be ! OrdinaryObjectCreate(null).
     auto* number_format_options = Object::create(global_object, nullptr);
 
     // 5. Perform ! CreateDataPropertyOrThrow(nfOptions, "useGrouping", false).
@@ -533,7 +533,7 @@ ThrowCompletionOr<Vector<PatternPartition>> format_date_time_pattern(GlobalObjec
     // 6. Let nf be ? Construct(%NumberFormat%, « locale, nfOptions »).
     auto* number_format = TRY(construct_number_format(number_format_options));
 
-    // 7. Let nf2Options be OrdinaryObjectCreate(null).
+    // 7. Let nf2Options be ! OrdinaryObjectCreate(null).
     auto* number_format_options2 = Object::create(global_object, nullptr);
 
     // 8. Perform ! CreateDataPropertyOrThrow(nf2Options, "minimumIntegerDigits", 2).
@@ -553,7 +553,7 @@ ThrowCompletionOr<Vector<PatternPartition>> format_date_time_pattern(GlobalObjec
     if (date_time_format.has_fractional_second_digits()) {
         fractional_second_digits = date_time_format.fractional_second_digits();
 
-        // a. Let nf3Options be OrdinaryObjectCreate(null).
+        // a. Let nf3Options be ! OrdinaryObjectCreate(null).
         auto* number_format_options3 = Object::create(global_object, nullptr);
 
         // b. Perform ! CreateDataPropertyOrThrow(nf3Options, "minimumIntegerDigits", fractionalSecondDigits).
@@ -827,7 +827,7 @@ ThrowCompletionOr<Array*> format_date_time_to_parts(GlobalObject& global_object,
     // 1. Let parts be ? PartitionDateTimePattern(dateTimeFormat, x).
     auto parts = TRY(partition_date_time_pattern(global_object, date_time_format, time));
 
-    // 2. Let result be ArrayCreate(0).
+    // 2. Let result be ! ArrayCreate(0).
     auto* result = MUST(Array::create(global_object, 0));
 
     // 3. Let n be 0.
@@ -835,7 +835,7 @@ ThrowCompletionOr<Array*> format_date_time_to_parts(GlobalObject& global_object,
 
     // 4. For each Record { [[Type]], [[Value]] } part in parts, do
     for (auto& part : parts) {
-        // a. Let O be OrdinaryObjectCreate(%Object.prototype%).
+        // a. Let O be ! OrdinaryObjectCreate(%Object.prototype%).
         auto* object = Object::create(global_object, global_object.object_prototype());
 
         // b. Perform ! CreateDataPropertyOrThrow(O, "type", part.[[Type]]).
@@ -1147,7 +1147,7 @@ ThrowCompletionOr<Array*> format_date_time_range_to_parts(GlobalObject& global_o
     // 1. Let parts be ? PartitionDateTimeRangePattern(dateTimeFormat, x, y).
     auto parts = TRY(partition_date_time_range_pattern(global_object, date_time_format, start, end));
 
-    // 2. Let result be ArrayCreate(0).
+    // 2. Let result be ! ArrayCreate(0).
     auto* result = MUST(Array::create(global_object, 0));
 
     // 3. Let n be 0.
@@ -1155,7 +1155,7 @@ ThrowCompletionOr<Array*> format_date_time_range_to_parts(GlobalObject& global_o
 
     // 4. For each Record { [[Type]], [[Value]], [[Source]] } part in parts, do
     for (auto& part : parts) {
-        // a. Let O be OrdinaryObjectCreate(%ObjectPrototype%).
+        // a. Let O be ! OrdinaryObjectCreate(%ObjectPrototype%).
         auto* object = Object::create(global_object, global_object.object_prototype());
 
         // b. Perform ! CreateDataPropertyOrThrow(O, "type", part.[[Type]]).
diff --git a/Userland/Libraries/LibJS/Runtime/Intl/DateTimeFormatFunction.cpp b/Userland/Libraries/LibJS/Runtime/Intl/DateTimeFormatFunction.cpp
index e91a1c810b..82d4a8721b 100644
--- a/Userland/Libraries/LibJS/Runtime/Intl/DateTimeFormatFunction.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Intl/DateTimeFormatFunction.cpp
@@ -46,7 +46,7 @@ ThrowCompletionOr<Value> DateTimeFormatFunction::call()
 
     // 3. If date is not provided or is undefined, then
     if (date.is_undefined()) {
-        // a. Let x be Call(%Date.now%, undefined).
+        // a. Let x be ! Call(%Date.now%, undefined).
         date = MUST(JS::call(global_object, global_object.date_constructor_now_function(), js_undefined()));
     }
     // 4. Else,
diff --git a/Userland/Libraries/LibJS/Runtime/Intl/DateTimeFormatPrototype.cpp b/Userland/Libraries/LibJS/Runtime/Intl/DateTimeFormatPrototype.cpp
index a12e55e5bc..b1a92f0eda 100644
--- a/Userland/Libraries/LibJS/Runtime/Intl/DateTimeFormatPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Intl/DateTimeFormatPrototype.cpp
@@ -71,7 +71,7 @@ JS_DEFINE_NATIVE_FUNCTION(DateTimeFormatPrototype::format_to_parts)
 
     // 3. If date is undefined, then
     if (date.is_undefined()) {
-        // a. Let x be Call(%Date.now%, undefined).
+        // a. Let x be ! Call(%Date.now%, undefined).
         date = MUST(call(global_object, global_object.date_constructor_now_function(), js_undefined()));
     }
     // 4. Else,
diff --git a/Userland/Libraries/LibJS/Runtime/Intl/Intl.cpp b/Userland/Libraries/LibJS/Runtime/Intl/Intl.cpp
index 022d1f2785..edd3c7abef 100644
--- a/Userland/Libraries/LibJS/Runtime/Intl/Intl.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Intl/Intl.cpp
@@ -69,7 +69,7 @@ JS_DEFINE_NATIVE_FUNCTION(Intl::get_canonical_locales)
     for (auto& locale : locale_list)
         marked_locale_list.append(js_string(vm, move(locale)));
 
-    // 2. Return CreateArrayFromList(ll).
+    // 2. Return ! CreateArrayFromList(ll).
     return Array::create_from(global_object, marked_locale_list);
 }
 
diff --git a/Userland/Libraries/LibJS/Runtime/Intl/ListFormat.cpp b/Userland/Libraries/LibJS/Runtime/Intl/ListFormat.cpp
index 552bf0dcfc..21b8bee773 100644
--- a/Userland/Libraries/LibJS/Runtime/Intl/ListFormat.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Intl/ListFormat.cpp
@@ -48,7 +48,7 @@ StringView ListFormat::type_string() const
 // 13.5.1 DeconstructPattern ( pattern, placeables ), https://tc39.es/ecma402/#sec-deconstructpattern
 Vector<PatternPartition> deconstruct_pattern(StringView pattern, Placeables placeables)
 {
-    // 1. Let patternParts be PartitionPattern(pattern).
+    // 1. Let patternParts be ! PartitionPattern(pattern).
     auto pattern_parts = partition_pattern(pattern);
 
     // 2. Let result be a new empty List.
@@ -125,7 +125,7 @@ Vector<PatternPartition> create_parts_from_list(ListFormat const& list_format, V
         placeables.set("0"sv, move(first));
         placeables.set("1"sv, move(second));
 
-        // f. Return DeconstructPattern(pattern, placeables).
+        // f. Return ! DeconstructPattern(pattern, placeables).
         return deconstruct_pattern(pattern, move(placeables));
     }
 
@@ -171,7 +171,7 @@ Vector<PatternPartition> create_parts_from_list(ListFormat const& list_format, V
         placeables.set("0"sv, move(head));
         placeables.set("1"sv, move(parts));
 
-        // g. Set parts to DeconstructPattern(pattern, placeables).
+        // g. Set parts to ! DeconstructPattern(pattern, placeables).
         parts = deconstruct_pattern(pattern, move(placeables));
 
         // h. Decrement i by 1.
@@ -184,7 +184,7 @@ Vector<PatternPartition> create_parts_from_list(ListFormat const& list_format, V
 // 13.5.3 FormatList ( listFormat, list ), https://tc39.es/ecma402/#sec-formatlist
 String format_list(ListFormat const& list_format, Vector<String> const& list)
 {
-    // 1. Let parts be CreatePartsFromList(listFormat, list).
+    // 1. Let parts be ! CreatePartsFromList(listFormat, list).
     auto parts = create_parts_from_list(list_format, list);
 
     // 2. Let result be an empty String.
@@ -205,10 +205,10 @@ Array* format_list_to_parts(GlobalObject& global_object, ListFormat const& list_
 {
     auto& vm = global_object.vm();
 
-    // 1. Let parts be CreatePartsFromList(listFormat, list).
+    // 1. Let parts be ! CreatePartsFromList(listFormat, list).
     auto parts = create_parts_from_list(list_format, list);
 
-    // 2. Let result be ArrayCreate(0).
+    // 2. Let result be ! ArrayCreate(0).
     auto* result = MUST(Array::create(global_object, 0));
 
     // 3. Let n be 0.
@@ -216,7 +216,7 @@ Array* format_list_to_parts(GlobalObject& global_object, ListFormat const& list_
 
     // 4. For each Record { [[Type]], [[Value]] } part in parts, do
     for (auto& part : parts) {
-        // a. Let O be OrdinaryObjectCreate(%Object.prototype%).
+        // a. Let O be ! OrdinaryObjectCreate(%Object.prototype%).
         auto* object = Object::create(global_object, global_object.object_prototype());
 
         // b. Perform ! CreateDataPropertyOrThrow(O, "type", part.[[Type]]).
diff --git a/Userland/Libraries/LibJS/Runtime/Intl/ListFormatPrototype.cpp b/Userland/Libraries/LibJS/Runtime/Intl/ListFormatPrototype.cpp
index 3fec5f95dc..a3101d5b2d 100644
--- a/Userland/Libraries/LibJS/Runtime/Intl/ListFormatPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Intl/ListFormatPrototype.cpp
@@ -45,7 +45,7 @@ JS_DEFINE_NATIVE_FUNCTION(ListFormatPrototype::format)
     // 3. Let stringList be ? StringListFromIterable(list).
     auto string_list = TRY(string_list_from_iterable(global_object, list));
 
-    // 4. Return FormatList(lf, stringList).
+    // 4. Return ! FormatList(lf, stringList).
     auto formatted = format_list(*list_format, string_list);
     return js_string(vm, move(formatted));
 }
@@ -62,7 +62,7 @@ JS_DEFINE_NATIVE_FUNCTION(ListFormatPrototype::format_to_parts)
     // 3. Let stringList be ? StringListFromIterable(list).
     auto string_list = TRY(string_list_from_iterable(global_object, list));
 
-    // 4. Return FormatListToParts(lf, stringList).
+    // 4. Return ! FormatListToParts(lf, stringList).
     return format_list_to_parts(global_object, *list_format, string_list);
 }
 
diff --git a/Userland/Libraries/LibJS/Runtime/Intl/LocaleConstructor.cpp b/Userland/Libraries/LibJS/Runtime/Intl/LocaleConstructor.cpp
index 30d315e4f3..63f95312f3 100644
--- a/Userland/Libraries/LibJS/Runtime/Intl/LocaleConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Intl/LocaleConstructor.cpp
@@ -48,7 +48,7 @@ static ThrowCompletionOr<String> apply_options_to_tag(GlobalObject& global_objec
     // 1. Assert: Type(tag) is String.
     // 2. Assert: Type(options) is Object.
 
-    // 3. If IsStructurallyValidLanguageTag(tag) is false, throw a RangeError exception.
+    // 3. If ! IsStructurallyValidLanguageTag(tag) is false, throw a RangeError exception.
     auto locale_id = is_structurally_valid_language_tag(tag);
     if (!locale_id.has_value())
         return vm.throw_completion<RangeError>(global_object, ErrorType::IntlInvalidLanguageTag, tag);
@@ -68,7 +68,7 @@ static ThrowCompletionOr<String> apply_options_to_tag(GlobalObject& global_objec
     //     a. If region does not match the unicode_region_subtag production, throw a RangeError exception.
     auto region = TRY(get_string_option(global_object, options, vm.names.region, Unicode::is_unicode_region_subtag));
 
-    // 10. Set tag to CanonicalizeUnicodeLocaleId(tag).
+    // 10. Set tag to ! CanonicalizeUnicodeLocaleId(tag).
     auto canonicalized_tag = JS::Intl::canonicalize_unicode_locale_id(*locale_id);
 
     // 11. Assert: tag matches the unicode_locale_id production.
@@ -103,7 +103,7 @@ static ThrowCompletionOr<String> apply_options_to_tag(GlobalObject& global_objec
     }
 
     // 16. Set tag to tag with the substring corresponding to the unicode_language_id production replaced by the string languageId.
-    // 17. Return CanonicalizeUnicodeLocaleId(tag).
+    // 17. Return ! CanonicalizeUnicodeLocaleId(tag).
     return JS::Intl::canonicalize_unicode_locale_id(*locale_id);
 }
 
diff --git a/Userland/Libraries/LibJS/Runtime/Intl/NumberFormat.cpp b/Userland/Libraries/LibJS/Runtime/Intl/NumberFormat.cpp
index 894c578fde..86f05a0ed6 100644
--- a/Userland/Libraries/LibJS/Runtime/Intl/NumberFormat.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Intl/NumberFormat.cpp
@@ -809,7 +809,7 @@ Array* format_numeric_to_parts(GlobalObject& global_object, NumberFormat& number
     // Note: Our implementation of PartitionNumberPattern does not throw.
     auto parts = partition_number_pattern(global_object, number_format, number);
 
-    // 2. Let result be ArrayCreate(0).
+    // 2. Let result be ! ArrayCreate(0).
     auto* result = MUST(Array::create(global_object, 0));
 
     // 3. Let n be 0.
@@ -817,7 +817,7 @@ Array* format_numeric_to_parts(GlobalObject& global_object, NumberFormat& number
 
     // 4. For each Record { [[Type]], [[Value]] } part in parts, do
     for (auto& part : parts) {
-        // a. Let O be OrdinaryObjectCreate(%Object.prototype%).
+        // a. Let O be ! OrdinaryObjectCreate(%Object.prototype%).
         auto* object = Object::create(global_object, global_object.object_prototype());
 
         // b. Perform ! CreateDataPropertyOrThrow(O, "type", part.[[Type]]).
diff --git a/Userland/Libraries/LibJS/Runtime/Intl/PluralRulesPrototype.cpp b/Userland/Libraries/LibJS/Runtime/Intl/PluralRulesPrototype.cpp
index 3aef812e17..0e73d7e568 100644
--- a/Userland/Libraries/LibJS/Runtime/Intl/PluralRulesPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Intl/PluralRulesPrototype.cpp
@@ -61,7 +61,7 @@ JS_DEFINE_NATIVE_FUNCTION(PluralRulesPrototype::resolved_options)
     // FIXME: Implement this when the data is available in LibUnicode.
     MarkedVector<Value> plural_categories { vm.heap() };
 
-    // 6. Perform ! CreateDataProperty(options, "pluralCategories", CreateArrayFromList(pluralCategories)).
+    // 6. Perform ! CreateDataProperty(options, "pluralCategories", ! CreateArrayFromList(pluralCategories)).
     MUST(options->create_data_property_or_throw(vm.names.pluralCategories, Array::create_from(global_object, plural_categories)));
 
     // 7. Return options.
diff --git a/Userland/Libraries/LibJS/Runtime/Intl/RelativeTimeFormat.cpp b/Userland/Libraries/LibJS/Runtime/Intl/RelativeTimeFormat.cpp
index ed8c52450f..354e4afb52 100644
--- a/Userland/Libraries/LibJS/Runtime/Intl/RelativeTimeFormat.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Intl/RelativeTimeFormat.cpp
@@ -249,7 +249,7 @@ ThrowCompletionOr<Array*> format_relative_time_to_parts(GlobalObject& global_obj
     // 1. Let parts be ? PartitionRelativeTimePattern(relativeTimeFormat, value, unit).
     auto parts = TRY(partition_relative_time_pattern(global_object, relative_time_format, value, unit));
 
-    // 2. Let result be ArrayCreate(0).
+    // 2. Let result be ! ArrayCreate(0).
     auto* result = MUST(Array::create(global_object, 0));
 
     // 3. Let n be 0.
@@ -257,7 +257,7 @@ ThrowCompletionOr<Array*> format_relative_time_to_parts(GlobalObject& global_obj
 
     // 4. For each Record { [[Type]], [[Value]], [[Unit]] } part in parts, do
     for (auto& part : parts) {
-        // a. Let O be OrdinaryObjectCreate(%Object.prototype%).
+        // a. Let O be ! OrdinaryObjectCreate(%Object.prototype%).
         auto* object = Object::create(global_object, global_object.object_prototype());
 
         // b. Perform ! CreateDataPropertyOrThrow(O, "type", part.[[Type]]).