slim-function.js

export const createNewAccount = async (params) => {
  const validated = validateCreateNewAccountParameters(params);
  if (!validated) {
    throw new Error('Validation error');
  }
  
  const usernameExists = await checkUsernameExists(params.username);
  if (usernameExists) {
    throw new Error('Username already exists');
  }
  
  const emailExists = await checkEmailExists(params.email);
  if (emailExists) {
    throw new Error('Email already exists');
  }    
  
  return insertUser(params);
}