Everywhere: Hoist the Libraries folder to the top-level

Author: https://github.com/trflynn89
Commit: https://github.com/LadybirdBrowser/ladybird/commit/93712b24bf2
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2256
Reviewed-by: https://github.com/sideshowbarker

Libraries/LibJS/Runtime/Intl/DateTimeFormatConstructor.h

@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2021-2022, Tim Flynn <trflynn89@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibJS/Runtime/NativeFunction.h>
+
+namespace JS::Intl {
+
+class DateTimeFormatConstructor final : public NativeFunction {
+    JS_OBJECT(DateTimeFormatConstructor, NativeFunction);
+    JS_DECLARE_ALLOCATOR(DateTimeFormatConstructor);
+
+public:
+    virtual void initialize(Realm&) override;
+    virtual ~DateTimeFormatConstructor() override = default;
+
+    virtual ThrowCompletionOr<Value> call() override;
+    virtual ThrowCompletionOr<NonnullGCPtr<Object>> construct(FunctionObject& new_target) override;
+
+private:
+    explicit DateTimeFormatConstructor(Realm&);
+
+    virtual bool has_constructor() const override { return true; }
+
+    JS_DECLARE_NATIVE_FUNCTION(supported_locales_of);
+};
+
+enum class OptionRequired {
+    Any,
+    Date,
+    Time,
+};
+
+enum class OptionDefaults {
+    All,
+    Date,
+    Time,
+};
+
+ThrowCompletionOr<NonnullGCPtr<DateTimeFormat>> create_date_time_format(VM&, FunctionObject& new_target, Value locales_value, Value options_value, OptionRequired, OptionDefaults);
+String format_offset_time_zone_identifier(double offset_minutes);
+
+}