selenium javascript safari

gistfile1.txt

var webdriver = require('selenium-webdriver'),
    By = webdriver.By,
    until = webdriver.until;

var driver = new webdriver.Builder()
    .forBrowser('safari')
    .usingServer('http://localhost:4444/')
    .build();

    driver.get('http://localhost/im');
    driver.wait(function (){ return false}, 6000);
    driver.quit();