Define multiple browser targets for a single build

First of all, I am not sure if this is a question for ember-cli-babel or ember-cli.

I am wondering if there is any way to accomplish having ember build generate 2 different JS and CSS sets of files based on 2 different target browsers definition. The first package would have regular names and the second could have "-legacy" appended for example.

The use case for this is the following - we would like to serve non-transpiled source code to browsers that support it, and regular transpiled code to all others.

Any suggestions on how this could be accomplished are greatly appreciated!