lib/graphql/execution/execute.rb in graphql-1.4.4 vs lib/graphql/execution/execute.rb in graphql-1.4.5

@@ -40,9 +40,16 @@
           if mutation
             GraphQL::Execution::Lazy.resolve(field_result)
           end
 
           selection_result.set(name, field_result)
+
+          # If the last subselection caused a null to propagate to _this_ selection,
+          # then we may as well quit executing fields because they
+          # won't be in the response
+          if selection_result.invalid_null?
+            break
+          end
         end
 
         selection_result
       end