lib/opal/nodes/node_with_args.rb in opal-0.11.0.rc1 vs lib/opal/nodes/node_with_args.rb in opal-0.11.0

@@ -210,10 +210,10 @@
       end
 
       # Returns an array of JS conditions for raising and argument
       # error caused by arity check
       def arity_checks
-        return @arity_checks if @arity_checks
+        return @arity_checks if defined?(@arity_checks)
 
         arity = args.children.size
         arity -= (opt_args.size)
 
         arity -= 1 if rest_arg