I am really into Observable. I am not sure that it's obvious that it is a streaming FRP implementation. I starting writing up some of the more intricate ways you can compute with its streams https://observablehq.com/@tomlarkworthy/switch-dataflow I think it's amazing that there is a decent FRP programmable IDE out now.

Looks amazing and super relevant! On the toRead list! (Trying to wrap my head around how this related to statecharts and if they could be implemented in each other 🙂 )

I am a big fan of statecharts! And it's on my todo list to add them to observable. In particular, I think an OAuth client is the perfect situation where visualizing state progression on its statechart based internal logic would be illustrative, especially if you are authorizing the app against facebook in realtime.