If anyone is interested, we are leveraging delimited continuations as the foundational paradigm for structured concurrency and async flow control in the browser.

I gave a talk about it recently at Michigan Typescript: https://www.youtube.com/watch?si=Mok0J8Wp0Z-ahFrN&v=uRbqLGj_...

https://github.com/thefrontside/effection

https://github.com/neurosnap/starfx

With delimited continuations, we are able to express any async flow control, it is an incredibly powerful paradigm.