Protoc output: NodeJS

TODO

Decisions to be made:

• language support
  • vanilla js (es6+ or whatever the latest version is)
  • typescript? (providing definitions would definitely be helpful to the community)
• to use @grpc/proto-loader or do static codegen (community seems to use proto-loader more?)
  • The proto-loader repository provides a brief overview of the generated types.
  • For static code-generation, messages can use built-in js generator with commonjs modules. In theory, the generated client/server should only need to import the messages file.

One improvement that would be nice to make to the gRPC signature would be if clients could use async/await instead of being forced into the callback pattern. I've seen some libraries that transparently handle this case and it would be a nice improvement over the gRPC interfaces which only support callbacks (last I looked).