core: move nfirst to the Clojure overlay

Same leaf-fn migration as ffirst/fnext/nnext. Full suite green, battery 3913.
2026-06-06 11:49:09 -04:00 · 2026-06-06 11:49:09 -04:00 · c8810ee4aa
commit c8810ee4aa
parent 30a308f3ef
3 changed files with 3 additions and 3 deletions
--- a/test/integration/self-host-test.janet
+++ b/test/integration/self-host-test.janet
@ -81,6 +81,7 @@
  (let [ctx (init opts)]
    (defn ev [s] (normalize-pvecs (eval-one ctx (parse-string s))))
    (assert (= 1 (ev "(ffirst [[1 2] [3 4]])")) "ffirst")
+    (assert (= [2] (ev "(nfirst [[1 2] [3 4]])")) "nfirst")
    (assert (= 2 (ev "(fnext [1 2 3])")) "fnext")
    (assert (= [3 4] (ev "(nnext [1 2 3 4])")) "nnext")))