function __TS__NewIndex(classProto)
    return function(tbl, key, val)
        local proto = classProto
        while true do
            local setters = rawget(proto, "____setters")
            if setters then
                local setter
                setter = setters[key]
                if setter then
                    setter(tbl, val)
                    return
                end
            end
            local base = rawget(
                rawget(proto, "constructor"),
                "____super"
            )
            if not base then
                break
            end
            proto = rawget(base, "prototype")
        end
        rawset(tbl, key, val)
    end
end