Do I understand correctly that sci/scittle does not support PeristentQueue because it relies on deftype? Interestingly, it does somewhat recognise #queue, bit then throws Error: Could not resolve symbol: cljs. I ended up (for today’s Aoc puzzle) borrowing some ClojureScript source code to implement the bare minimum of queue functions and learned. 🙂

@jurjanpaul502 It's supported in #C029PTWD3HR. The limitations of deftype only apply to interpreted source code, not to built-ins. I usually only add this stuff when people ask, or if I hit the issue myself, so feel free to make an issue and it will be added for the next release

It's probably easy to port by looking at the nbb core.cljs