tsconfig.json

{
  "compilerOptions": {
    "outDir": "./dist", // output directory
    "module": "commonjs", // Specify what module code is generated.
    "target": "es2019", // Set the JavaScript language version for emitted JavaScript and include compatible library declarations. // see more at node.green
    "esModuleInterop": true, //Emit additional JavaScript to ease support for importing CommonJS modules
    "allowJs": true, // Allow javascript files to be compiled.
    "strictNullChecks": true, // Enable strict null checks.


  }
}