How to catch both thrown error as well as Promise rejection

catch-exception-and-promise-rejection.js

(async () => {
  console.log('Starting');
  let result;
  try {
    result = await test();
  } catch (error) {
    // catch both thrown error as well as Promise rejection
    console.error(error);
  }
  console.log('Result: ', result);
  async function test () {
    switch (process.argv[2]) {
      case '0':
        return Promise.resolve('Promise resolved');
        break;
      case '1':
        throw new Error('I throw error');
        break;
      case '3':
        return Promise.reject(new Error('Promise rejected'));
        break;
      default:
        return Promise.resolve('Default promise resoleved');
    }   
  }
})()