Best Buy add to cart

bb.js

let added = false
let carting = false

function sleep(ms) {
    return new Promise(resolve => setTimeout(resolve, ms));
}
async function waitForButton() {
    if (document.getElementsByClassName("go-to-cart-button")[0]) {
        document.getElementsByClassName("go-to-cart-button")[0].childNodes[0].click()
        carting = true
    } else if (!added && document.querySelector('[id^="fulfillment-add-to-cart-button-"]').innerText.includes("Add to Cart")) {
        document.getElementsByClassName("add-to-cart-button")[0].click()
        added = true
    }
}
while (!carting) {
    waitForButton()
    await sleep(100)
}