Clean YouTube Playlist Videos

clean_youtube_playlist.user.js

// ==UserScript==
// @name        Clean Youtube Playlist
// @match       *://www.youtube.com/playlist*
// @grant       GM_registerMenuCommand
// @grant       GM_getValue
// @homepageURL https://gist.github.com/sandorex/6bdd51ef467a079c87f19ba469a8bc7c
// @downloadURL https://gist.githubusercontent.com/sandorex/6bdd51ef467a079c87f19ba469a8bc7c/raw/clean_youtube_playlist.user.js
// @noframes
// @version     1.1.5
// @author      Sandorex
// @description Removes all videos from a youtube playlist
// ==/UserScript==
//
// Original code made by qoomon, but has been heavily modified should work for any language
// https://gist.github.com/qoomon/a3f71ff2b2a18ee297c9435d539d5247

GM_registerMenuCommand('Clean Playlist', function() {
  if (!confirm("This will erase your playlist permanently, are you sure you want to proceed?"))
    return;

  // FOR STANDALONE USE COPY THIS BLOCK
  (async function() {
    const sleep = (timeout) => new Promise(res => setTimeout(res, timeout))
    const untilDefined = async (factory, timeout = 100) => {
      while (true) {
        let value = factory()
        if (value != null) return value
        await sleep(timeout)
      }
    }

    // note that 
    let playlistName = document.querySelector('.metadata-wrapper #container #text')?.textContent || null;

    if (!playlistName) {
      console.error("Playlist name could not be read, aborting..");
      alert("Could not read the playlist name, aborting..");
      return;
    }
    // TODO test if the playlist name is good, by checking the remove from X button, maybe get playlist from that too?

    console.info(`Removing videos from playlist '${playlistName}'`);

    while (true) {
      let videos = document.querySelectorAll('#primary ytd-playlist-video-renderer')
      if(videos.length == 0) break

      for (let videoElement of videos) {
        let videoTitle = videoElement.querySelector('a#video-title')
        console.info("Removing: " + videoTitle.innerText)
        console.info("          " + videoTitle.href)

        let actionMenu = videoElement.querySelector('#menu')
        let actionMenuButton = actionMenu.querySelector('#button')

        console.debug("Opening menu", actionMenuButton)
        actionMenuButton.click()
        let removeButton = await untilDefined(() =>
            document.evaluate(`//tp-yt-paper-listbox/ytd-menu-service-item-renderer[./tp-yt-paper-item/yt-formatted-string/span[text() = '${playlistName}']]`,
                              document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue);

        console.debug("Click the remove button", removeButton)
        removeButton.click()
        await sleep(GM_getValue("sleep_duration", null) || 200)
      }
    }
    console.info("done!")
  })();
  // FOR STANDALONE USE COPY THIS BLOCK
})

I made it a violentmonkey script, it should work with all languages but do tell me if it does not and ill fix it
If it's too fast for you then set sleep_duration to your desired time in violentmonkey settings

It seems the XPath to the playlist title changed, but i switched to using only the id hopefully they wont change that