[NodeJS] Promises and async/await

It would be nice if there was a grpc-tools and/or grpc_node_plugin option that would generate client and server code that follows the ES6 Promise and ES7 async/await model.

For example, instead of: https://github.com/grpc/grpc/blob/98f8989a6712118549c432c9f91b6a516250014d/examples/node/static_codegen/greeter_client.js#L35-L37 We could write:

  [err, response] = await client.sayHello(request);

Or something similar. On the server side, instead of: https://github.com/grpc/grpc/blob/98f8989a6712118549c432c9f91b6a516250014d/examples/node/static_codegen/greeter_server.js#L27-L31 We could write:

async function sayHello(call) {
  var reply = new messages.HelloReply();
  reply.setMessage('Hello ' + call.request.getName());
  return [null, reply]
}

Again, just ideas.

This feature would eliminate the need for wrapper code for users wanting to use this pattern. I would love to know if anyone is interested in this feature or planning on adding it. Thanks!

(moved from https://github.com/grpc/grpc/issues/12751)

[Jokero]

Promise is already must-have feature. For me callbacks are something from dawn of the dinosaurs 😃

[nahidakbar]

Still no official support for async/await/Promises? This is a serious issue. People have been trying to not write callbacks in node for the last 5 years. Makes applications hard to read and maintain. Adding noisy promisify boilerplate everywhere is also not ideal. That plain looks like you are using legacy deprecated tech.