Initial commit

include/ftxui/screen/deprecated.hpp

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+// Copyright 2021 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+#ifndef FTXUI_SCREEN_DEPRECATED_HPP
+#define FTXUI_SCREEN_DEPRECATED_HPP
+
+#include <string>
+
+namespace ftxui {
+int wchar_width(wchar_t);
+int wstring_width(const std::wstring&);
+}  // namespace ftxui
+
+#endif  // FTXUI_SCREEN_DEPRECATED_HPP