gistfile1.js

function (user, context, callback) {
  
  

  
  if (context.connection === 'facebook'){    
    delete user.context;
    delete user.favorite_teams;
    delete user.inspirational_people;
    delete user.bio;
    delete user.quotes; 
    delete user.languages; 
    delete user.cover;
  }
  
  
  
  
  var len = user.identities.length; 
  
  
  
  for(var i = 0; i < len; i++){
        if( typeof(user.identities[i].profileData) !== 'undefined' && typeof(user.identities[i].connection) !== 'undefined' && user.identities[i].connection === 'facebook'){

          delete user.identities[i].profileData.context;
          delete user.identities[i].favorite_teams;
          delete user.identities[i].inspirational_people;
          delete user.identities[i].bio;
          delete user.identities[i].quotes; 
          delete user.identities[i].languages; 
          delete user.identities[i].cover;
          delete user.identities[i].devices; 
          
    
          break;
           
          
        }
    
  }
  
  callback(null, user, context);
}