How should one go about using both JavaScript and CoffeeScript in a Spine Application?

Question

I'm just now wrapping my head around Spine, Hem, CoffeeScript, etc. in an effort to build a browser-based application. I'm wanting to use a JavaScript graphing library in the application that I'm pretty sure isn't written in CoffeeScript (does that matter?), so I'm wondering how I'd go about mixing both CoffeeScript and JavaScript in my application... is it as simple as just mixing the two and letting Hem (which is what actually triggers the CoffeeScript to get compiled to JavaScript, right?) figure things out during compilation from CoffeeScript to JavaScript? Or is it something where I need to use special tags in my CoffeeScript when mixing in JavaScript?

I've Googled around for some examples of such a thing but to no avail... please advise.