tsconfig.json

{
  "compilerOptions": {
    "target": "es5",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017','ES2018' or 'ESNEXT'. */
    "module": "commonjs",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
    "lib": [
      "dom", "es2015"
    ],                             /* Specify library files to be included in the compilation. */
    "sourceMap": true,                     /* Generates corresponding '.map' file. */
    "noEmitHelpers": true,
    "importHelpers": true,                 /* Import emit helpers from 'tslib'. */
    "moduleResolution": "node",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
    "baseUrl": ".",                       /* Base directory to resolve non-absolute module names. */
    "paths": {
      "@/*": [
        "app/*"
      ]
    },                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
    "typeRoots": [
      "types"
    ],                       /* List of folders to include type definitions from. */
    "types": [
      "node"
    ],                           /* Type declaration files to be included in compilation. */
    "allowSyntheticDefaultImports": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
    "esModuleInterop": true,                   /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
    "experimentalDecorators": true,        /* Enables experimental support for ES7 decorators. */
    "emitDecoratorMetadata": true,         /* Enables experimental support for emitting type metadata for decorators. */

    "skipLibCheck": true
  },
  "include": [
    "app",
    "types"
  ],
  "exclude": [
    "node_modules",
    "platforms"
  ]
}