backwards_compatibility.rb in graphql-1.8.0.pre1

- old
+ new

@@ -10,14 +10,13 @@
     # If a wrapper is applied, warn the application with `name`.
     #
     # If `last`, then use the last arguments to call the function.
     def wrap_arity(callable, from:, to:, name:, last: false)
       arity = get_arity(callable)
-      case arity
-      when to
+      if arity == to || arity < 0
         # It already matches, return it as is
         callable
-      when from
+      elsif arity == from
         # It has the old arity, so wrap it with an arity converter
         message ="#{name} with #{from} arguments is deprecated, it now accepts #{to} arguments, see:"
         backtrace = caller(0, 20)
         # Find the first line in the trace that isn't library internals:
         user_line = backtrace.find {|l| l !~ /lib\/graphql/ }