rollback problem due bug with tarant 2.7.1

Author: kanekotic

package.json

@@ -57,7 +57,7 @@
     "typescript": "3.3.3333"
   },
   "dependencies": {
-    "tarant": "2.7.1"
+    "tarant": "2.6.4"
   },
   "jest": {
     "preset": "ts-jest",