1 files changed, 39 insertions, 0 deletions
diff --git a/Userland/Libraries/LibJS/Runtime/Intl/DateTimeFormat.cpp b/Userland/Libraries/LibJS/Runtime/Intl/DateTimeFormat.cpp
index 61dd68e4eb..8abf7e1135 100644
--- a/Userland/Libraries/LibJS/Runtime/Intl/DateTimeFormat.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Intl/DateTimeFormat.cpp
@@ -1404,6 +1404,45 @@ ThrowCompletionOr<String> format_date_time_range(GlobalObject& global_object, Da
     return result.build();
 }
 
+// 11.1.13 FormatDateTimeRangeToParts ( dateTimeFormat, x, y ), https://tc39.es/ecma402/#sec-formatdatetimerangetoparts
+ThrowCompletionOr<Array*> format_date_time_range_to_parts(GlobalObject& global_object, DateTimeFormat& date_time_format, Value start, Value end)
+{
+    auto& vm = global_object.vm();
+
+    // 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).
+    auto* result = MUST(Array::create(global_object, 0));
+
+    // 3. Let n be 0.
+    size_t n = 0;
+
+    // 4. For each Record { [[Type]], [[Value]], [[Source]] } part in parts, do
+    for (auto& part : parts) {
+        // a. Let O be OrdinaryObjectCreate(%ObjectPrototype%).
+        auto* object = Object::create(global_object, global_object.object_prototype());
+
+        // b. Perform ! CreateDataPropertyOrThrow(O, "type", part.[[Type]]).
+        MUST(object->create_data_property_or_throw(vm.names.type, js_string(vm, part.type)));
+
+        // c. Perform ! CreateDataPropertyOrThrow(O, "value", part.[[Value]]).
+        MUST(object->create_data_property_or_throw(vm.names.value, js_string(vm, move(part.value))));
+
+        // d. Perform ! CreateDataPropertyOrThrow(O, "source", part.[[Source]]).
+        MUST(object->create_data_property_or_throw(vm.names.source, js_string(vm, part.source)));
+
+        // e. Perform ! CreateDataProperty(result, ! ToString(n), O).
+        MUST(result->create_data_property_or_throw(n, object));
+
+        // f. Increment n by 1.
+        ++n;
+    }
+
+    // 5. Return result.
+    return result;
+}
+
 // 11.1.14 ToLocalTime ( t, calendar, timeZone ), https://tc39.es/ecma402/#sec-tolocaltime
 ThrowCompletionOr<LocalTime> to_local_time(GlobalObject& global_object, double time, StringView calendar, [[maybe_unused]] StringView time_zone)
 {