rename :throw entry to :exception in :throw op

Author: frenchy64

src/main/clojure/cljs/analyzer.cljc

@@ -1413,7 +1413,7 @@
       (error env "Too many arguments to throw, throw expects a single Error instance")))
   (let [throw-expr (disallowing-recur (analyze (assoc env :context :expr) throw-form))]
     {:env env :op :throw :form form
-     :throw throw-expr
+     :exception throw-expr
      :children [throw-expr]}))
 
 (defmethod parse 'try

src/main/clojure/cljs/compiler.cljc

@@ -559,7 +559,7 @@
       (emitln "return " gs ";})()"))))
 
 (defmethod emit* :throw
-  [{:keys [throw env]}]
+  [{throw :exception :keys [env]}]
   (if (= :expr (:context env))
     (emits "(function(){throw " throw "})()")
     (emitln "throw " throw ";")))