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.)

[1] https://wingolog.org/archives/2023/02/07/whippet-towards-a-n...