I mean if you care about perf you can do it in one step. It’s not that huge of an ask, and engineering wise “compile some typed code” is a hell of a lot more straightforward than “try to guess what I should speculatively compile at runtime”

There was a piece by v8 devs a while back where they ended up turning down JIT aggressiveness cuz it ended up making normal web pages slower (except for like Google Docs).

This is just me backseat-BDFLing “why do the hard thing when we could do the easy thing” tho