Deal with event and future

future_meteor_event.js

Meteor.methods({
  'imapConnect': function(email, password) {
    var fut = new Future(),

    imap = new Imap({
      user: email,
      password: password,
      host: host,
      port: port,
      tls: tls,
      tlsOptions: {
        rejectUnauthorized: false
      }
    });

    imap.once('ready', function() {
      console.log('imap connection open');
      fut['return']('success');
    });

    imap.once('error', function(err) {
      console.log(err);
      fut['return'](err)
    });

    imap.once('end', function() {
      console.log('Connection ended');
      fut['return']('Connection ended');
    });
    
    imap.connect();
    return fut.wait();
}