Personally I'd prefer a promise based api. eg. stub.QueryBooks(qbr).then(...) A ...

		grizzles on April 27, 2017 \| parent \| context \| favorite \| on: gRPC-Web: Moving past REST+JSON towards type-safe ... Personally I'd prefer a promise based api. eg. stub.QueryBooks(qbr).then(...) A benefit of grpc coming to the web means someone will inevitably build a tool to parse a .proto file and generate a ui to test your microservices during dev. That will be cool.

Not exactly a promise, but grpc has an asynchronous API.