Hi fellow reader,
I'm ririxi, core maintainer of spicetify. Some people asked me to do a technical explanation of what spotify shipped with macOS Intel versions. This would be my first time writing a post like this, so I apologize for any inscriptions.
Spotify under the hood uses CEF (Chromium Embedded Framework) which is a framework around chromium, essentially electron but for C++. Chromium uses a V8 which is a Javascript engine created by Google. V8 can generate serialized representation (bytecode) of the V8 engine's heap. It contains pre-initialized JavaScript objects and functions.