Prevent others from knowing you're typing on Discord

discord-typing.user.js

// ==UserScript==
// @name         Discord Block Typing
// @namespace    https://github.com/e9x
// @version      1.0.0
// @description  Prevent others from knowing you're typing on Discord
// @author       e9x
// @homepageURL  https://github.com/e9x
// @match        https://*.discord.com/app
// @match        https://*.discord.com/channels/*
// @match        https://*.discord.com/login
// @icon         https://www.google.com/s2/favicons?sz=64&domain=discord.com
// @grant        none
// @run-at       document-start
// ==/UserScript==

const { open, send } = XMLHttpRequest.prototype;

const blockReqs = new WeakSet();

XMLHttpRequest.prototype.open = function (
  method,
  url,
  async,
  username,
  password
) {
  const parsedURL = new URL(url, location.toString());

  if (
    parsedURL.host === location.host &&
    /^\/api\/v\d+\/channels\/\d+\/typing$/.test(parsedURL.pathname)
  ) {
    blockReqs.add(this);
  }

  return open.call(this, method, url, async, username, password);
};

XMLHttpRequest.prototype.send = function (body) {
  send.call(this, body);
  if (blockReqs.has(this)) this.abort();
};