A modern programming language that makes developers happier.

kotlinlang

I don’t think that it need to be any kind special support from Intellij, everything should work out of the box

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The generated classes cannot be resolved.

something is wrong with your project setup, had no issues using that lib

If you are using maven you most likely need to add generated classes to sources

It does compile. I'm using Gradle, it's cloned from examples folder of grpc-kotlin.

I found the solution here: <https://github.com/grpc/grpc-kotlin/issues/214>