Ugly error when running the base command from the npm scripts

[tonioriol]

Maybe has something to do with the use of process.exitCode = 1. Maybe only do process.exitCode = 1 when an unexpected error happens.

[tonioriol]

This only happens when running the command through npm run, presumably because when we run the cmp command without any subcommands yargs sets the exit status to 1 and when npm run gets that it prints this ugly error.

If we run it through node_modules/.bin/cmp this doesnt happen.

Can't find a way to solve that so moving on.