Has anyone outside of Google had any luck using the closure compiler with a modern-ish stack with the advanced optimizations? Tsickle and the like seem to be archived as well, so it's unclear to me. Google must internally have some tooling to go from ts to closureJS?
It is so, so good!
You have to take care to write code in a certain way, but once you understand the constrants it's not a big deal. The advanced optimizations are better than anything else I've seen in the JS world, and it's not even close. It's just insanely good.