node-ldapjs: Error: urlStr + ' is an invalid LDAP url (scope)'

Hi, I am using this very simple code to connect to LDAP but no matter what i keep on getting the following error:

var ldap = require('ldapjs'); 
var client = ldap.createClient({url:'ldap://openam.sandbox.local:10389'}); 
client.bind('cn=DM', 'test', function(err) {
  if (err){
    console.log("not able to connect")
  }     else      { 
    console.log("connected successfully")
  }
});

I am using mac.

/Users/ashishjindal/Projects/sw-app-api/api-testing/node_modules/ldapjs/lib/url.js:15
      throw new TypeError(urlStr + ' is an invalid LDAP url (scope)')
      ^

TypeError: ldap://openam.sandbox.local:10389 is an invalid LDAP url (scope)
    at Object.parse (/Users/ashishjindal/Projects/sw-app-api/api-testing/node_modules/ldapjs/lib/url.js:15:13)
    at new Client (/Users/ashishjindal/Projects/sw-app-api/api-testing/node_modules/ldapjs/lib/client/client.js:114:33)
    at Object.createClient (/Users/ashishjindal/Projects/sw-app-api/api-testing/node_modules/ldapjs/lib/client/index.js:17:12)
    at Object.<anonymous> (/Users/ashishjindal/Projects/sw-app-api/api-testing/tests/builders/ldap.js:3:19)
    at Module._compile (module.js:570:32)
    at Object.Module._extensions..js (module.js:579:10)
    at Module.load (module.js:487:32)
    at tryModuleLoad (module.js:446:12)
    at Function.Module._load (module.js:438:3)
    at Module.runMain (module.js:604:10)

[Done] exited with code=1 in 0.148 seconds