feat: use babel with awesome-typescript-loader

tsconfig.json

@@ -35,5 +35,10 @@
   ],
   "exclude": [
     "node_modules"
-  ]
+	],
+	"awesomeTypescriptLoaderOptions": {
+		"useBabel": true,
+		"babelCore": "@babel/core", // needed for Babel v7,
+		"useCache": true, // Use internal file cache to improve warm-up time.
+	}
 }