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UserScript XHR Hook Framework

This script is intended to work with @require only. Once required this can be used to listen for XHR events using window.UserScript.OnXHR.addEventListener((event) => {});

Version vom 17.02.2022. Aktuellste Version

Dieses Skript sollte nicht direkt installiert werden. Es handelt sich hier um eine Bibliothek für andere Skripte, welche über folgenden Befehl in den Metadaten eines Skriptes eingebunden wird // @require https://updategreasyfork.deno.dev/scripts/440220/1019651/UserScript%20XHR%20Hook%20Framework.js 

// ==UserScript==
// @namespace    Xortrox/UserScripts/HookXHR
// @name         UserScript XHR Hook Framework
// @version      0.1
// @description  This script is intended to work with @require only. Once required this can be used to listen for XHR events using window.UserScript.OnXHR.addEventListener((event) => {});
// @author       Xortrox
// @match        *
// @esversion:   6
// @license MIT
// ==/UserScript==

class HookXHR {
	constructor() {
		let rawSend = XMLHttpRequest.prototype.send;

		XMLHttpRequest.prototype.send = function() {
			if (!this._hooked) {
				this._hooked = true;

				this.addEventListener('readystatechange', function() {
					if (this.readyState === XMLHttpRequest.DONE) {
						setupHook(this);
					}
				}, false);
			}
			rawSend.apply(this, arguments);
		}

		function setupHook(xhr) {
			if (window.elethorGeneralPurposeOnXHR) {
				const e = new Event('UserScriptXHR');
				e.xhr = xhr;

				window.UserScript.OnXHR.dispatchEvent(e);
			}
		}
		
	}
}

if (!window.UserScript) {
	window.UserScript = {};
}

/** 
 * Can be used to listen for XHR requests
 * the event parameter will contain an xhr field which is the XMLHttpRequest.send itself
 * 
 * window.UserScript.OnXHR.addEventListener((event) => {
 * 		console.log(event.xhr);
 * });
 * */
window.UserScript.OnXHR = new EventTarget();
const hookXHR = new HookXHR();