I've been a long-time Javascript hater. Probably didn't help that I started out 20 years ago, and dealing with cross-browser support was a
big issue. And of course, let's so no more about Internet Explorer
shudder. And then NPM - a direct result of JavaScript's anaemic standard library.
Anyway, things have changed a lot, and I recently worked on my first ever web app with native ES6 - no transpiling to ES5! It was... not nearly as bad as it used to be! Modules are a thing, and the language has evolved with things like async/await, evolved for the better, I think. The standard library is still horribly anaemic though - the number of "helper" functions needed is ridiculous.
But still, I would no longer classify myself as a hater. Progress at last :)