facebookInfo.js

Accounts.onCreateUser(function(options, user) {
  // We're enforcing at least an empty profile object to avoid needing to check
  // for its existence later.
  if (user.services && user.services.facebook) {
    var
      accessToken = user.services.facebook.accessToken,
      result,
      profile,
      config
    ;

    result = Meteor.http.get("https://graph.facebook.com/me", {
      params: {
        access_token: accessToken
      }
    });

    if (result.error)
      throw result.error;

    profile = result.data;
    
    user.profile = profile;
    
  } else {
    user.profile = options.profile ? options.profile : {};
  }
  return user;
});