tsconfig.json

{
  "compilerOptions": {
    /* Basic Options */
    "target": "es6",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', or 'ESNEXT'. */
    "module": "commonjs",                     /* Specify module code generation: 'commonjs', 'amd', 'system', 'umd' or 'es2015'. */
    "jsx": "react",                           /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
    "sourceMap": true,                        /* Generates corresponding '.map' file. */
    "outDir": "./lib",                        /* Redirect output structure to the directory. */

    /* Strict Type-Checking Options */
    "strict": true,                            /* Enable all strict type-checking options. */

    /* Module Resolution Options */
    "types": [
      "enzyme",
      "jest",
      "react",
      "react-native",
      "react-test-renderer"
    ],                           /* Type declaration files to be included in compilation. */

    /* Experimental Options */
  }
}