Utils/tsconfig.json

{
   "compilerOptions": {
      "target": "es2015",
      "module": "commonjs",
      "moduleResolution": "node",
      "outDir": "lib",
      "preserveWatchOutput": true,
      "declaration": true,
      "sourceMap": true,
      "strict": true
   },
   "include": [
      "./src"
   ]
}