LibJS: Implement console.dirxml

This function actually gets tested in WPT.

Libraries/LibJS/Console.cpp

@@ -398,6 +398,34 @@ ThrowCompletionOr<Value> Console::dir()
     return js_undefined();
 }
 
+// 1.1.11 dirxml(...data) https://console.spec.whatwg.org/#dirxml
+ThrowCompletionOr<Value> Console::dirxml()
+{
+    auto& vm = realm().vm();
+
+    // 1. Let finalList be a new list, initially empty.
+    GC::RootVector<Value> final_list(vm.heap());
+
+    // 2. For each item of data:
+    for (size_t i = 0; i < vm.argument_count(); ++i) {
+        auto item = vm.argument(i);
+
+        // 1. Let converted be a DOM tree representation of item if possible; otherwise let converted be item with
+        //    optimally useful formatting applied.
+        // FIXME: "Optimally-useful formatting"
+
+        // 2. Append converted to finalList.
+        final_list.append(item);
+    }
+
+    // 3. Perform Logger("dirxml", finalList).
+    if (m_client) {
+        return m_client->logger(LogLevel::DirXML, final_list);
+    }
+
+    return js_undefined();
+}
+
 static ThrowCompletionOr<String> label_or_fallback(VM& vm, StringView fallback)
 {
     return vm.argument_count() > 0 && !vm.argument(0).is_undefined()
@@ -850,7 +878,7 @@ ThrowCompletionOr<GC::RootVector<Value>> ConsoleClient::formatter(GC::RootVector
         }
         // 4. If specifier is %o, optionally let converted be current with optimally useful formatting applied.
         else if (specifier == "%o"sv) {
-            // TODO: "Optimally-useful formatting"
+            // FIXME: "Optimally-useful formatting"
             converted = current;
         }
         // 5. If specifier is %O, optionally let converted be current with generic JavaScript object formatting applied.

Libraries/LibJS/Console.h

@@ -79,6 +79,7 @@ public:
     ThrowCompletionOr<Value> trace();
     ThrowCompletionOr<Value> warn();
     ThrowCompletionOr<Value> dir();
+    ThrowCompletionOr<Value> dirxml();
     ThrowCompletionOr<Value> count();
     ThrowCompletionOr<Value> count_reset();
     ThrowCompletionOr<Value> group();

Libraries/LibJS/Runtime/CommonPropertyNames.h

@@ -124,6 +124,7 @@ namespace JS {
     P(difference)                            \
     P(dir)                                   \
     P(direction)                             \
+    P(dirxml)                                \
     P(disabledFeatures)                      \
     P(disambiguation)                        \
     P(disposeAsync)                          \

Libraries/LibJS/Runtime/ConsoleObject.cpp

@@ -49,6 +49,7 @@ void ConsoleObject::initialize(Realm& realm)
     define_native_function(realm, vm.names.trace, trace, 0, attr);
     define_native_function(realm, vm.names.warn, warn, 0, attr);
     define_native_function(realm, vm.names.dir, dir, 0, attr);
+    define_native_function(realm, vm.names.dirxml, dir, 0, attr);
     define_native_function(realm, vm.names.count, count, 0, attr);
     define_native_function(realm, vm.names.countReset, count_reset, 0, attr);
     define_native_function(realm, vm.names.group, group, 0, attr);
@@ -131,6 +132,13 @@ JS_DEFINE_NATIVE_FUNCTION(ConsoleObject::dir)
     return console_object.console().dir();
 }
 
+// 1.1.11 dirxml(...data) https://console.spec.whatwg.org/#dirxml
+JS_DEFINE_NATIVE_FUNCTION(ConsoleObject::dirxml)
+{
+    auto& console_object = *vm.current_realm()->intrinsics().console_object();
+    return console_object.console().dirxml();
+}
+
 // 1.2.1. count(label), https://console.spec.whatwg.org/#count
 JS_DEFINE_NATIVE_FUNCTION(ConsoleObject::count)
 {

Libraries/LibJS/Runtime/ConsoleObject.h

@@ -34,6 +34,7 @@ private:
     JS_DECLARE_NATIVE_FUNCTION(warn);
     JS_DECLARE_NATIVE_FUNCTION(table);
     JS_DECLARE_NATIVE_FUNCTION(dir);
+    JS_DECLARE_NATIVE_FUNCTION(dirxml);
     JS_DECLARE_NATIVE_FUNCTION(count);
     JS_DECLARE_NATIVE_FUNCTION(count_reset);
     JS_DECLARE_NATIVE_FUNCTION(group);