Redirects YouTube shorts videos to the "watch" player.

yt-shorts-redirect.user.js

// ==UserScript==
// @name         Youtube shorts redirect
// @namespace    ViolentMonkey Scripts
// @version      0.3
// @match        *://*.youtube.com/*
// @grant        none
// @run-at       document-start
// ==/UserScript==

(function() {
  'use strict';

  const replaceShortsLinks = () => {
    [...document.querySelectorAll('a[href*="/shorts/"]')]
    .forEach(a => {
      a.href = a.href.replace(/\/shorts\/(.*)/, '/watch?v=$1')
    });
  };

  window.addEventListener("yt-navigate-finish", replaceShortsLinks, true);

  let oldHref = document.location.href;
  if (window.location.href.indexOf('youtube.com/shorts') > -1) {
    window.location.replace(window.location.toString().replace('/shorts/', '/watch?v='));
  }
  function shortsRedirector() {
    if (oldHref != document.location.href) {
      oldHref = document.location.href;
      if (window.location.href.indexOf('youtube.com/shorts') > -1) {
        window.location.replace(window.location.toString().replace('/shorts/', '/watch?v='));
      }
    }
  }

  window.addEventListener("yt-navigate-finish", shortsRedirector, true);

})();