This is giving me flashbacks to editors of yore; EMACS, Eight MB And Continually Swapping. I remember reading almost the exact same comments on Usenet from the 80s and 90s.
It’s also 2024 and you still can’t share JavaScript objects between threads. Do not underestimate the horror that is tracing garbage collection with multiple mutator threads. (Here[1] is Guile maintainer Andy Wingo singing praises to the new, simpler way to do it... in 2023, referring to a research paper from 2008 that he came across a year before that post.)
That’s not entirely surprising. Emacs’s UI is a character-cell matrix with some toolkit-provided fluff around it; VSCode’s is an arbitrary piece of graphics. One of these is harder than the other. (Not as harder as VSCode is slower, but still a hell of a lot.)
