i have wriiten the below code for launching the browser in selenium webdriver using javascript:

const {Builder,By,Key,util}=require("selenium-webdriver");

async function example()
{
let driver = await new Builder().forBrowser("firefox").build();
await driver.get("http://google.com");
await driver.findElement(By.name("q")).sendKeys("selenium",Key.RETURN);
}
example();

Please help me to solve this issue