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Wis / YouTube-Related-Video-Suggestions-Only

// ==UserScript==
// @name         YouTube-Related-Video-Suggestions-Only
// @icon         https://www.google.com/s2/favicons?domain=youtube.com
// @namespace    https://wis.am/
// @version      0.1
// @description  remove distracting video suggestion on YouTube!
// @author       Wis Sa
// @licence      MIT
// @match        http*://*.youtube.com/*
// @grant        none
// ==/UserScript==

(function () {
  'use strict';
  window.addEventListener('load', function () {
    function eventFire(el, etype) {
      if (el.fireEvent) {
        el.fireEvent('on' + etype);
      }
      else {
        var evObj = document.createEvent('Events');
        evObj.initEvent(etype, true, false);
        el.dispatchEvent(evObj);
      }
    }
    let intervalID = window.setInterval(findAndClick, 600);

    function findAndClick() {
      var relatedEl = [...document.getElementsByClassName('yt-chip-cloud-chip-renderer')]
        .find(e => e.textContent === 'Related');
      if (relatedEl) {
        eventFire(relatedEl, 'click');
        window.clearInterval(intervalID);
      }
    }

    // select the target node
    var target = document.querySelector('title');

    // create an observer instance
    var observer = new MutationObserver(function (mutations) {
      // We need only first event and only new value of the title
      console.log(mutations[0].target.nodeValue);
      window.clearInterval(intervalID);
      intervalID = window.setInterval(findAndClick, 600);
    });

    // configuration of the observer:
    var config = {
      attributes: true,
      childList: true,
      subtree: true
    };

    // pass in the target node, as well as the observer options
    observer.observe(target, config);

  }, false);
})();