[saurik]

God I wish TC39 would treat JavaScript as a compilation target, but they do seem to keep adding new complex features for end-developers (which, as you say, are mixing up what it even means to code in the language: the class-oriented stuff in a prototype-based language is causing a whack-a-mole of syntax complexity to regain what they lost, such as with decorators) that of course every implementation will have to support (which alone should be a reason to try to only add features and behaviors to the browser that absolutely could not possibly be simulated effectively in code: browsers should be easy for a few people to implement, like a JVM, with most users using nothing but JS and canvas, generated as a compilation target... but, instead they are spiraling behemoths of complexity with ever-burgeoning CSS and HTML features that even Microsoft had to finally tap out of bothering to maintain).