sig/cli.rbs in rbs-3.2.2 vs sig/cli.rbs in rbs-3.3.0.pre.1

@@ -16,9 +16,11 @@
     end
 
     interface _IO
       def puts: (*untyped) -> void
 
+      def tty?: () -> bool
+
       def print: (*untyped) -> void
 
       def flush: () -> void
     end