Custom login method with Meteor

client.js

function loginCallback (error, result) {
  console.log(error, result);
}

Meteor.loginWithCode = function(phone, code) {

  Accounts.callLoginMethod({
    methodArguments: [{
      hascode: true,
      phone: phone,
      code: code
    }],
    userCallback: loginCallback
  });
};

server.js

Accounts.registerLoginHandler('login', function(loginRequest) {

  var user = Meteor.users.findOne({phone: loginRequest.phone});

  if(user.code !== loginRequest.code) {
    return null;
  }

  var stampedToken = Accounts._generateStampedLoginToken();
  var hashStampedToken = Accounts._hashStampedToken(stampedToken);

  Meteor.users.update(user._id,
    {$push: {'services.resume.loginTokens': hashStampedToken}}
  );

  return {
    userId: user._id,
    token: stampedToken.token
  };
});

in 2018 there was a change to the Meteor accounts_server to look after the stamped token. Just need to return the userId now