Modern javascript and Meteor - how to?

I have watched this video about modern javascript and how we can start using it now given that it has 95% browser support.

Can we do this with Meteor? How can we preconfigure the bundle to be doing this when executing meteor build ?

Everything in this video should be plug and play with Meteor.

Even better, Meteor automatically builds a modern and legacy bundle of your app and serves modern code to all browsers that will support it