Promises aren't available in IE11, and as the last "true" IE, I imagine it'll be around a bit longer than it should be. I recently had to rewrite a bunch of va

Promises aren't available in IE11, and as the last "true" IE, I imagine it'll be around a bit longer than it should be. I recently had to rewrite a bunch of vanilla promise-based code to use jQuery promises once I realized IE11 didn't work.