ExecJS doesn't allow printing error messages from Babel

[ralekna]

I have a huge legacy JavaScript file and I decided to start converting it into ES6 module.

When I compile it using babel-cli I get such warning:
Note: The code generator has deoptimised the styling of "myscript.js" as it exceeds the max of "100KB".

But when I try to compile it by using this gem, internally used ExecJS can't display that message because it doesn't have such thing as console and is not planing to have one (sstephenson/execjs#91 and https://github.com/sstephenson/execjs/blob/master/test/test_execjs.rb#L237).

Current solution while still using ExecJS would be to define dummy console object with its dummy functions like log and error but then all such errors like this will be eaten by void.

[tricknotes]

This is the expected ExecJS's behavior.