violentmonkey: convert youtube links to yewtu.be

youtube2yewtube.js

// ==UserScript==
// @name         YouTube Link Replacer
// @namespace    Violentmonkey Scripts
// @match        https://www.youtube.com/*
// @match        https://m.youtube.com/*
// @grant        none
// @run-at       document-end
// ==/UserScript==

(function()
{
  'use strict'

  function replaceYouTubeLinks()
  {
    var links = document.querySelectorAll('a')
    links.forEach(link =>
    {
      const href = link.getAttribute('href')
      if (href && href.match(/^\//))
        link.setAttribute('href', "https://yewtu.be"+href)
    })
  }
  replaceYouTubeLinks()
  
  const observer = new MutationObserver(replaceYouTubeLinks)
  const observerConfig =
  {
      childList: true,
      subtree: true
  }
  observer.observe(document.body, observerConfig)
})()

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