store/[org.clojure/core.typed "0.2.81"] clj::clojure.core.typed.method-param-nilables/nilable-param?

Source

(defn nilable-param? [sym arity param]
  (boolean 
    (when-let [nilables (@METHOD-PARAM-NILABLE-ENV sym)]
      (when-let [params (or (nilables :all)
                            (nilables arity))]
        (or (#{:all} params)
            (params param))))))

Uses on crossclj