Giving the client the executable to run, not running it for them. This means you can't hide the artifact from the client; for an interpreted language, this mean

Giving the client the executable to run, not running it for them. This means you can't hide the artifact from the client; for an interpreted language, this means recovery of the source code would be much easier than with a compiled output. That being said, it's still possible to reverse engineer the code; it just makes it harder.