☰

YouTube Music - Disable are you sure dialog

Simply disables the window.beforeunload handler by hooking the handler

// ==UserScript==
// @name YouTube Music - Disable are you sure dialog
// @description Simply disables the window.beforeunload handler by hooking the handler 
// @namespace http://www.jackdye.co.uk/
// @match        *://music.youtube.com/*
// @license MIT
// @grant none
// @run-at document-start
// @version 1.1
// ==/UserScript==
var placeToReplace;
if (window.EventTarget && EventTarget.prototype.addEventListener) {
  placeToReplace = EventTarget;
} else {
  placeToReplace = Element;
}

placeToReplace.prototype.oldaddEventListener = placeToReplace.prototype.addEventListener;
placeToReplace.prototype.addEventListener = function(event, handler, placeholder) {
  if(event == "beforeunload") {
      console.log("Youtube hook - disabling exit page handler");
      return;
  }
  if (arguments.length < 3) {
    this.oldaddEventListener(event, handler, false);
  } else {
    this.oldaddEventListener(event, handler, placeholder);
  }
}