Transpiling es6 npm packages to es5.. Possible?

[CraneArmy]

question is in the title. I know that transpilation was built in to meteor 1.2 with the ecmascript plugin (via babel), but I cant figure out how to do this with an npm package... is it possible?

I havnt done much work with transpilation, but I am beginning to believe the easiest way to tackle this may be to fork the es6 version transpile it to es5 and republish it to npm which seems like a bit of work but maybe the path of least resistance...

Can anyone confirm this is an issue with meteorhacks:npm or point me in a different direction?