[scott_karana]

"Bad clients" in your example don't include malicious ones, who'll see a gRPC endpoint generating JSON to be consumed in a JavaScript app.

With no runtime type checking, JS's casting problems, and potential bugs caused by leaning on "type safe" serialization, there could be lots of black hat opportunities...

[computerex]

Protobuf/gRPC are not specific to any given language.

[scott_karana]

Well aware. I was answering mainly with regard to GP's quote, agreeing with IshKebab:

> There's nothing about REST+JSON that prevents type safety, as far as I'm aware.