fix: components deleted too early

fixes #58

Author: RomanHotsiy

lib/split-definition.js

@@ -118,10 +118,9 @@ module.exports = function(openapi, openapiDir) {
           delete openapi.components[componentType];
         }
       }
-
-      if (Object.keys(openapi.components).length === 0) {
-        delete openapi.components;
-      }
+    }
+    if (Object.keys(openapi.components).length === 0) {
+      delete openapi.components;
     }
   }