tsconfig.json

{
  "compilerOptions": {
    /* Basic Options */                       
    "target": "ES2017",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', or 'ESNEXT'. */
    "module": "amd",                     /* Specify module code generation: 'commonjs', 'amd', 'system', 'umd' or 'es2015'. */
    // "lib": [],                             /* Specify library files to be included in the compilation:  */
    "declaration": true,                   /* Generates corresponding '.d.ts' file. */
    // "sourceMap": true,                     /* Generates corresponding '.map' file. */
    "outDir": "./dist",                        /* Redirect output structure to the directory. */
    // "importHelpers": true,                 /* Import emit helpers from 'tslib'. */
    // "noImplicitAny": false,                 /* Raise error on expressions and declarations with an implied 'any' type. */
    // "noImplicitThis": false,
    "alwaysStrict": true,                  /* Parse in strict mode and emit "use strict" for each source file. */
    // "inlineSourceMap": true,               /* Emit a single file with source maps instead of having a separate file. */
    // "inlineSources": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
    "newLine": "lf",
    "maxNodeModuleJsDepth": 1,
    "strict": true,                            /* Enable all strict type-checking options. */
    "pretty": true
  },
  "include": [
    "src/**/*"
  ],
  "exclude": [
    "dist/",
    "test/",
    "node_modules",
    "**/*.spec.ts"
  ]
}