tsconfig.json

{
  "compilerOptions": {
    "target": "es5",                      /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */
    "module": "commonjs",                 /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
    "lib": ["es2017"],                    /* Specify library files to be included in the compilation. */
    "sourceMap": true,                    /* Generates corresponding '.map' file. */
    "downlevelIteration": true,           /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
    "strict": true,                       /* Enable all strict type-checking options. */
    "esModuleInterop": true,              /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
    "declaration": true,
    "outDir": "dist",
    "plugins": [
      { "name": "typescript-tslint-plugin" }
    ]
  },
  "include": [
    "lib/**/*.ts"
  ],
  "exclude": [
    "node_modules",
    "test/**/*.ts",
    "examples",
    "dist"
  ]
}