fix: build issue "he server responded with a non-JavaScript MIME type of "text/html" "

tsconfig.json

@@ -10,7 +10,7 @@
     "experimentalDecorators": true,
     "moduleResolution": "node",
     "importHelpers": true,
-    "target": "es2015",
+    "target": "es5",
     "module": "es2020",
     "lib": ["es2018", "dom"]
   }