I did not know about :pseudo-names, that looks to be quite helpful. Thanks. This is the method I was dealing with: https://github.com/city41/bookends/blob/mast

I did not know about :pseudo-names, that looks to be quite helpful. Thanks. This is the method I was dealing with: https://github.com/city41/bookends/blob/master/site/src/cljs/demo/knex.cljs#L6 https://github.com/city41/bookends/blob/master/site/src/cljs... In that let expression I'm digging my way down into a native JS object to monkey patch it. The equivalent (set! (.. knex -client -Runner -prototype -debug) ...) was being completely removed as far as I can tell. Same with an equivalent aset. That channel no longer got set up and my app stopped working. If I simply put that method back to set!, then it breaks again, very reproducible. When I added in a (.log js/console "hello") to the method, I could see that console log inlined where the method call was, but no other remnant of the method could be found. I will play with :pretty-print and look into creating a small repro of what I'm seeing. But if I don't succeed with a smaller repro, then at the very least this app is already quite small. EDIT: here is a little gist showing the difference I'm seeing if anyone is curious: https://gist.github.com/city41/12099b91e0fbb526b0dc https://gist.github.com/city41/12099b91e0fbb526b0dc