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Make Input Events Passive

Make input event listeners passive

  1. // ==UserScript==
  2. // @name         Make Input Events Passive
  3. // @namespace    http://tampermonkey.net/
  4. // @version      0.1
  5. // @description  Make input event listeners passive
  6. // @author       https://github.com/zzarcon/default-passive-events
  7. // @include      *
  8. // @run-at       document-start
  9. // @license      MIT
  10. // ==/UserScript==
  11.  
  12. (function() {
  13.  
  14.     var e,t=["scroll","wheel","touchstart","touchmove","touchenter","touchend","touchleave","mouseout","mouseleave","mousemove","mouseenter","mousewheel","mouseover"];
  15.     if(function(){
  16.         var e=!1;
  17.         try{
  18.             var t=Object.defineProperty({},"passive",{get:function(){e=!0}});
  19.             window.addEventListener("test",null,t)
  20.             window.removeEventListener("test",null,t)}
  21.         catch(e){}return e}())
  22.     {var o=EventTarget.prototype.addEventListener;
  23.      e=o
  24.      EventTarget.prototype.addEventListener=function(o,r,n){
  25.          var s,a="object"==typeof n&&null!==n,i=a?n.capture:n;
  26.          (n=a?function(e){
  27.              var t=Object.getOwnPropertyDescriptor(e,"passive");
  28.              return t&&!0!==t.writable&&void 0===t.set?Object.assign({},e):e}(n):{}).passive=void 0!==(s=n.passive)?s:-1!==t.indexOf(o)&&!0
  29.          n.capture=void 0!==i&&i
  30.          e.call(this,o,r,n)}
  31.      EventTarget.prototype.addEventListener._original=e}
  32.  
  33.  
  34. })();