hasRoleExactely Server Side

hasRoleExactely.js

// https://joshneri.us/serverside-hasroleexactly-in-servicenow/
function hasRoleExactly(role) {
    var au = new ArrayUtil();
    var roles = gs.getSession().getRoles() + ''; 
    var roleArray = roles.split(","); 
    var isAuthorized = au.contains(roleArray, role); 
    return isAuthorized; 
}

//or maybe
//https://community.servicenow.com/community?id=community_question&sys_id=d8edab96dbd67f80d58ea345ca96195e
function hasRoleExactly(roleName){
  if (gs.getSession().getRoles().toString().indexOf(roleName)>0){
    return true;
  } else {
    return false;
  }
}