function processData() {
  try {
    console.log('start');
    throw new Error('oops');
    console.log('unreachable');
  } catch (e) {
    console.log('caught');
    return 'error';
  } finally {
    console.log('cleanup');
  }
  console.log('end');
}

const result = processData();
console.log(result);