function isSpecialUser()

in lib/util.js [20:35]

• 13 lines of code
• 5 McCabe index (conditional complexity)

function isSpecialUser(user) {
  let localPart = null;
  const names = [ 'admin', 'administrator', 'hostmaster', 'postmaster', 'webmaster' ]
    .map((name) => name.toUpperCase());

  if (! user) {
    return;
  }

  const match = user.match(/^([^@]*)@/i);
  if (match && match[1] && names.indexOf(match[1].toUpperCase()) !== -1) {
    localPart = match[1].toLowerCase();
  }

  return localPart;
}