MSVC Error C2131: Cannot define constexpr std::strings. So, AnsiEscapeCodes is left out of the library when compiled with Microsoft Compiler until a decent fix can be formulated.

include/AnsiEscapeCodes.hpp

@@ -56,6 +56,8 @@ namespace mcolor
 
     // TODO: Refactor to constexpr string literals
 
+#ifndef _MSC_VER
+
     constexpr std::string AnsiEscapePrefix = "\033[";
 
     namespace AnsiEscapeCodes {
@@ -225,6 +227,7 @@ namespace mcolor
         constexpr std::string EnableAltBuffer = AnsiEscapePrefix + "?1049h";
         constexpr std::string DisableAltBuffer = AnsiEscapePrefix + "?1049l";
 #pragma endregion
-    }
 
+    }
+#endif
 }