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IMDb - stop scripts

Prevent unnecessary scripts from loading

  1. // ==UserScript==
  2. // @name         IMDb - stop scripts
  3. // @namespace    https://github.com/Procyon-b
  4. // @version      0.7.1
  5. // @description  Prevent unnecessary scripts from loading
  6. // @author       Achernar
  7. // @match        https://www.imdb.com/*
  8. // @run-at       document-start
  9. // @grant        none
  10. // ==/UserScript==
  11.  
  12. (function() {
  13. "use strict";
  14.  
  15. // which scripts to block
  16. function match(s) {
  17.   return /^https?:\/\/(m\.media-amazon\.com\/images\/I\/|(d1zcggttmijv1z|dqpnq362acqdi)\.cloudfront\.net\/_next\/static\/).*[^?]$/.test(s);
  18.   }
  19.  
  20. // catch scripts before they are loaded
  21. var obs=new MutationObserver(function(muts){
  22.   for (let mut of muts) {
  23.     for (let n of mut.addedNodes) {
  24.       if ((n.nodeType == 1) && (n.tagName == 'SCRIPT')) {
  25.         let src=n.src;
  26.         if (!src) continue;
  27.         if (match(src)) {
  28.           n.type='not/javascript';
  29.           n.addEventListener('beforescriptexecute', function(e){e.preventDefault();}, true);
  30.           }
  31.         }
  32.       }
  33.     }
  34.   });
  35.  
  36. var c=0;
  37. function startObs() {
  38.   c++;
  39.   if (!document) {
  40.     setTimeout(startObs,0);
  41.     return;
  42.     }
  43.   obs.observe(document, {childList:true, subtree:true});
  44.   injSt();
  45. }
  46. startObs();
  47.  
  48. function injSt() {
  49.   var r=document.head || document.documentElement;
  50.   if (!r) {
  51.     setTimeout(injSt,0);
  52.     return;
  53.     }
  54.   var st=document.createElement('style');
  55.   r.appendChild(st);
  56.   st.innerText='.ipc-loader__circle, .ipc-loader__dot {animation: unset !important;} section.ipc-page-section[class*="Hero__HeroParent-"] .ipc-chip-list {display: block;} [data-testid="plot"]:not(:last-child) {display: inline-block; margin-right: -2em;} [data-testid="plot"] ~ .ipc-button__text {display: inline;}[data-testid="delayed-loader-test-id"]{display:none;}';
  57. }
  58.  
  59. // load rest of the script after DOM is ready
  60. if (document.readyState != 'loading') init();
  61. else document.addEventListener('DOMContentLoaded', init);
  62.  
  63. function init() {
  64.  
  65. var search=document.getElementById('suggestion-search');
  66. if (!search && !/^https:\/\/www\.imdb\.com\/.*\/mediaviewer\//.test(location.href) ) return;
  67.  
  68. if (search) search.oninput=fix;
  69.  
  70. function addJS(u, ol, c=2) {
  71.   if (!u) return;
  72.   var el=document.createElement('script');
  73.   el.src=u;
  74.   if (ol) el.onload=ol;
  75.   el.onerror=function(){
  76.     if (c) addJS(u,ol,--c);
  77.     }
  78.   try {
  79.     let r=document.head || document.documentElement;
  80.     r.insertBefore(el,r.firstChild);
  81.   }catch(e){}
  82.   if (el.parentNode) el.parentNode.removeChild(el);
  83. }
  84.  
  85. var a, all=[], uniq={}, tot=0, done=true;
  86.  
  87. // load blocked scripts
  88. function fix(repeat=false) {
  89.   if (search) search.oninput=null;
  90.   a=document.querySelectorAll('script[src*="m.media-amazon.com/images/I/"], script[src*="d1zcggttmijv1z.cloudfront.net/_next/static/"], script[src*="dqpnq362acqdi.cloudfront.net/_next/static/"]');
  91.   a.forEach(function(e,i,a){
  92.     if (!uniq[e.src]) all.push(e.src);
  93.     uniq[e.src]=1;
  94.     });
  95.   let uTot=Object.keys(uniq).length;
  96.   if (tot == uTot) return;
  97.   tot=uTot;
  98.   if (done) {
  99.     done=false;
  100.     loadJS();
  101.     }
  102.   if (repeat) {
  103.     setTimeout(function(){fix(true)},1000);
  104.     setTimeout(function(){fix(true)},3000);
  105.     setTimeout(function(){fix()},8000);
  106.     }
  107. }
  108.  
  109. function fixPage() {
  110.   if (location.href.startsWith('https://www.imdb.com/title/')) {
  111.     var a=document.querySelectorAll('a[href="/"]');
  112.     a.forEach(function(e){e.href='javascript:;'});
  113.     }
  114. }
  115.  
  116. fixPage();
  117.  
  118. function loadJS() {
  119.   if (all.length==0) {
  120.     done=true;
  121.     return;
  122.     }
  123.   addJS(all.shift()+'?', loadJS);
  124. }
  125.  
  126. if (location.pathname=='/') fix(true);
  127. if (/^https:\/\/www\.imdb\.com\/(video|.*\/mediaviewer)\//.test(location.href)) fix(true);
  128. }
  129.  
  130. })();