JS classes are one of the things I'm most unsure about in the direction of the language. On the one hand, it is nice to have a form of abstraction of prototypes

JS classes are one of the things I'm most unsure about in the direction of the language. On the one hand, it is nice to have a form of abstraction of prototypes that is quite close to the typical mode of programming used in popular languages like Python and Java. On the other hand, it is quite a needless abstraction for a well-functioning system. The ease with which a class system can be implemented on top of prototypes just shows how prototypes embody the JS spirit: Flexible, powerful, a bit too easy to shoot yourself in the foot with.