Yeah, I have some fondness for it myself, even despite listing some of the headaches I recall from past efforts. The fun/interesting/good news is that it is not

Yeah, I have some fondness for it myself, even despite listing some of the headaches I recall from past efforts. The fun/interesting/good news is that it is not technically an either/or in JS. Prototypes are still the underlying driver below the class syntax. There's absolutely still room for doing really interesting or cool things with prototypical inheritance, even doing things that aren't entirely possible with the class syntax, and then wrap them up in a cool library and make them interoperable with class syntax for all the downstream users. (Interop with the class syntax is still a useful design target.) The hardest parts of such "cool" library ideas is just likely getting the Typescript types correct with them. (Typescript doesn't quite model all the possible intricacies of prototypical inheritance, in my experience.)