nativefier/app/tsconfig.json

{
  "compilerOptions": {
      "allowJs": true,
      "declaration": false,
      "esModuleInterop": true,
      "incremental": true,
      "module": "commonjs",
      "moduleResolution": "node",
      "outDir": "./dist",
      "resolveJsonModule": true,
      "skipLibCheck": true,
      "sourceMap": true,
      // Here in app/tsconfig.json, we want to set the `target` and `lib` keys to
      // the "best" values for the version of Node **coming with the chosen Electron**.
      // Careful: we're *not* talking about Nativefier's (CLI) required Node version,
      // we're talking about the version of the Node runtime **bundled with Electron**.
      //
      // Like in our main tsconfig.json, we want to be as conservative as possible,
      // to support (as much as reasonable) users using old versions of Electron.
      // Then, at some point, an app dependency (declared in app/package.json)
      // will require a more recent Node, then it's okay to bump our app compilerOptions
      // to what's supported by the more recent Node.
      //
      // TS doesn't offer any easy "preset" for this, so the best we have is to
      // believe people who know which {syntax, library} parts of current EcmaScript
      // are supported for the version of Node coming with the Electron being used,
      // and use what they recommend. For the current Node version, I followed
      // https://stackoverflow.com/questions/51716406/typescript-tsconfig-settings-for-node-js-10
      // and 'dom' to tell tsc it's okay to use the URL object (which is in Node >= 7)
      "target": "es2018",
      "lib": ["es2018", "dom"]
  },
  "include": [
      "./src/**/*"
  ]
}