Prevent the cancellation of important shortcut keys in the browser by web pages.
// ==UserScript==
// @name preventDefault Patch
// @namespace preventdefault-patch.user.js
// @match *://*/*
// @grant none
// @version 1.0
// @icon https://vivaldi.com/wp-content/themes/vivaldicom-theme/img/browsers/vivaldi.webp
// @author nafumofu
// @description Prevent the cancellation of important shortcut keys in the browser by web pages.
// @license MIT
// ==/UserScript==
const keys = [
't',
'n',
'w',
'Tab',
'PageDown',
'PageUp',
];
Event.prototype.preventDefault = new Proxy(Event.prototype.preventDefault, {
apply(target, thisArg, argumentsList) {
const event = thisArg;
if (event.type === 'keydown') {
if (keys.includes(event.key) && !event.altKey && event.ctrlKey && !event.metaKey) {
return;
}
if (event.key === 'F4' && event.altKey && !event.ctrlKey && !event.shiftKey && !event.metaKey) {
return;
}
}
return Reflect.apply(target, thisArg, argumentsList);
}
});