Right now in my Node application i use Babel to transpile ES6 syntax with this command:
./node_modules/.bin/babel src/ -d bin/
Do you mean
compact option? ( default is "auto" )
Do not include superfluous whitespace characters and line terminators. When set > to "auto" compact is set to true on input sizes of >100KB.
But in fact it's not task for babel. You can use additional tool ( like uglifyjs ) for minifying / obfuscation code