Google Analytics opt-out

Defines the Google Analytics opt-out object on every page.

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

// ==UserScript==
// @name        Google Analytics opt-out
// @namespace   zdnq5fclhrdh8lgo
// @match       *://*/*
// @grant       none
// @version     1.2
// @license     MIT
// @description Defines the Google Analytics opt-out object on every page.
// @run-at      document-start
// @inject-into content
// ==/UserScript==

(function () {
	"use strict";

	const defineOptout = (null, function (unwrapper = (x)=>x, exporter = (f)=>f) {
		const _gaUserPrefs = new window.Object();
		const ioo = exporter(function ioo() { return true; });


		// Define property directly if this is an Xray
		Reflect.defineProperty(unwrapper(_gaUserPrefs), "ioo", {
			enumerable: true,
			configurable: false,
			get: exporter(() => ioo),
			set: exporter(() => {})
		});

		Reflect.defineProperty(unwrapper(window), "_gaUserPrefs", {
			enumerable: false,
			configurable: false,
			get: exporter(() => _gaUserPrefs),
			set: exporter(() => {})
		});
	});


	if ("wrappedJSObject" in window) {
		// Bypass Firefox sandbox
		defineOptout(XPCNativeWrapper.unwrap, (f) => exportFunction(f, window));
	} else {
		// Inject script tag (Chrome)
		const script = document.createElement("script");
		script.text = `"use strict";(${defineOptout})();`;
		(document.head ?? document.documentElement).prepend(script);
		script.remove();
	}
})();