Edit tsconfig.json for es2015 lib

Author: endlessdev

tsconfig.json

@@ -10,6 +10,9 @@
     "declaration": false,
     "noImplicitAny": false,
     "removeComments": true,
-    "noLib": false
+    "noLib": false,
+    "lib": [
+      "es2015"
+    ]
   }
 }