disable ^J on notion.so

notion-disable-ctrl-shift-j-hotkey.user.js

// ==UserScript==
// @name         Notion ^J disabler
// @namespace    https://kzt.sh/
// @version      0.1
// @description  disable ^J on notion.so
// @author       hektorg@gmail.com
// @match        https://www.notion.so/*
// @grant        none
// @run-at       document-start
// ==/UserScript==

(function() {
  'use strict';

  window.addEventListener(
      'keydown',
      function (e) {
          // disable ^J
          if(e.key === 'J' && e.ctrlKey) e.stopPropagation()
      }
  );
})();