How do I exclude files from any buble transforms?
Say I'm rolling up some files for the browser, and I've decided to use Ractive (great library) and Lodash in my bundle. It appears that buble is trying to transpile these libraries. But I'm importing them already zipped, and I'd like them to stay AS IS. It doesn't feel right to see stuff like var this$1 = this;
showing up for Lodash's transpile and var arguments$1 = arguments;
with Ractive's transpile. In other words, they shouldn't be transpiled.
Is there something I'm not understanding about this, or is rollup with buble not mature enough to separate out these concerns?
Thanks :)