Great, but this can be done with type-safety too. See this https://github.com/pelotom/runtypes https://github.com/pelotom/runtypes -- it isn't purely meant for

Great, but this can be done with type-safety too. See this https://github.com/pelotom/runtypes https://github.com/pelotom/runtypes -- it isn't purely meant for validation, but not much is needed to use it for it.