I could have sworn that Netflix had an open source library for sending encrypted responses to the browser that had to be decrypted with EME. I can't find it now

I could have sworn that Netflix had an open source library for sending encrypted responses to the browser that had to be decrypted with EME. I can't find it now though. The cdm api in chrome at least allows for decrypting raw bytes. I'm not sure how it's exposed in javascript.