>Obviously, you can't stop the user from saving the source-code, but I was thinking maybe you can perform some "validation" or "tests" within the JS to see if t

>Obviously, you can't stop the user from saving the source-code, but I was thinking maybe you can perform some "validation" or "tests" within the JS to see if the editor is live from the intended URL. Anyone trying to steal your code would simply remove those tests. As MarkR42 said, your main protection is that your production code, by itself, just isn't worth that much.