YouTube subscription cleaner

clearYoutube.js

/**
* This script will remove all your YouTube subscriptions loaded in the channels page,
* if you really want to remove all your subscriptions, you need to scroll to the bottom of
* the page to load all channels.
*
* Follow this steps to run the script:
*   1. Open the subscriptions list (https://www.youtube.com/feed/channels)
*   2. Scroll down until you see all the channels you want to unsubscribe
*   3. Open your browser console
*   4. Paste the code below into the console and press enter
*   5. That's it, now you just have to wait for the script to finish
*/

let channel,
  elements,
  unsubscriberInterval,
  promise,
  index;
const channelBatches = document.querySelectorAll("[id='grid-container']");
console.log('channel batches count: ' + channelBatches.length);

const unsubscriber = (resolve) => {
  if (index >= elements.length - 1) {
    clearInterval(unsubscriberInterval);
    resolve(true);
  }

  channel = elements[index].querySelector(
    "yt-formatted-string#text.ytd-channel-name"
  ).text.runs[0].text;
  console.log("unsubscribing from " + channel);
  console.log("progress: (" + (index + 1) + "/" + elements.length + ")");

  elements[index].querySelector("[aria-label^='Unsubscribe from']").click();
  setTimeout(() => {
    document.getElementById("confirm-button").click();
  }, 2000);
  index++;
};

const batchUnsubscriber = (batch) => {
  return new Promise((resolve) => {
    elements = batch.getElementsByClassName(
      "ytd-expanded-shelf-contents-renderer"
    );
    unsubscriberInterval = setInterval(() => unsubscriber(resolve), 3000);
  });
};

const main = async (batchIndex) => {
  if (batchIndex >= channelBatches.length) return;

  index = 0;
  await batchUnsubscriber(channelBatches[batchIndex]).then(() =>
    main(batchIndex + 1)
  );
};

main(0);