Your prompt definitely takes GPT-4 on the right path. Unfortunately, CLJS is still too niche (and/or the answer is buried too deeply in search results) that its suggested macro does not work.

Here is the suggested code.

  (defmacro create-js-object
    [k1 v1 k2 v2]
    `#js {~k1 ~v1 ~k2 ~v2})

It wants to unquote, presumably because macros are processed by the compiler, which exists in Clojure world, not JavaScript world, so the #js literal does not exist there, but unquoting will let us emit code that CLJS is happy with. Unfortunately, the tag doesn't actually do anything!

Here is how I'd revise the example code.

  (defmacro mac [k1 v1 k2 v2]
    (cljs.tagged-literals/->JSValue {k1 v1 k2 v2}))

Now let's compare results in a REPL...

  cljs.user> (type (create-js-object "foo" 1 "bar" 2))
  cljs.core/PersistentArrayMap
  cljs.user> (type (mac "foo" 1 "bar" 2))
  #object[Object]

We get double confirmation by comparing the compiled output of functions making use of the macro.

  (str (fn [] (create-js-object "foo" 1 "bar" 2)))
  ;; => "function (){\nreturn new cljs.core.PersistentArrayMap(null, 2, [\"foo\",(1),\"bar\",(2)], null);\n}"
  
  (str (fn [] (mac "foo" 1 "bar" 2)))
  ;; => "function (){\nreturn ({\"foo\": (1), \"bar\": (2)});\n}"

With all of that said, this is a VERY niche question, but it does not involve any macro magic whatsoever, and I'm sure most Clojure novices don't even know doing this is possible. It essentially requires two bits of knowledge: (1) macros run at compile-time, and (2) JSValue is an object container for native JS arrays and maps.

It's still impressive that GPT-4 was able to make a guess that looks right until you decide to experiment at the REPL.

Admittedly I am not very well versed in Clojure, I can understand only a little of what you are saying. But it seems to me that throwing more training data at the model should fix the issue.