Change tsconfig - Make target es6 in base config

tsconfig.base.json

@@ -17,7 +17,7 @@
     "removeComments": true,
     "sourceMap": true,
     "strict": true,
-    "target": "es5"
+    "target": "es6"
   },
   "exclude": ["node_modules", "dist"],
   "include": ["src"]

tsconfig.json

@@ -7,6 +7,5 @@
     "declaration": false,
     "declarationDir": null,
     "module": "commonjs",
-    "target": "es6",
   }
 }