Yes, because it's the easiest codebase to manage and maintain. Everything new is in NodeJS. Build process is all in NodeJS as well, creating build processes in

Yes, because it's the easiest codebase to manage and maintain. Everything new is in NodeJS. Build process is all in NodeJS as well, creating build processes in other tecnologies used to be a headache. Only if it's something very specific and focused I would use the API's language which is "Java" ou ".NET".