Hm, I don't think you can say that an optional, third party library is a "part of a language". Each language has a some standard library, which can be considere

Hm, I don't think you can say that an optional, third party library is a "part of a language". Each language has a some standard library, which can be considered "part of a language", but other libraries shouldn't be. This way you could say that all npm, pypi and gem packages are part of the relevant languages. Other than this, however, it's a good example.