Validate a new Meteor account based on email suffix

accountsValidate.js

function checkEmailAddress(emailAddress) {
	check(emailAddress, String);
	suffix = emailAddress.split('@')[1];
	if (suffix === "wcs.com")
		{ return true } else { return false };
	};

Accounts.validateNewUser(function (user) {
	console.log(user);
  if (checkEmailAddress(user.emails[0].address)) {
  	return true;
  } else {
  	throw new Meteor.Error(403, "Email must be from the correct domain");
  };
});