strategic-try-catch.js

const user = {
  username: 'JohnDoe',
  gender: 'male',
}

try {
  validateUsernameFormat(user.username);
  await checkUsernameExists(user.username);
} catch (error) {
  return {
    // a better approach is to have a response success/error function
    error: {
      message: error.message,
      code: 'FAILED_USERNAME_VALIDATION',
    }
  }
}

try {
  await insertNewUser(user);
} catch (error) {
  return {
    error: {
      message: error.message,
      code: 'FAILED_INSERT_USER',
    }
  }
}

try {
  await sendMessage('User created', { userId, user });
} catch (error) {
  console.log('Failed to send message, but it is ok', error);
}

return {
  data: {
    message: 'User created successfully!'
  }
};