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Google Analytics opt-out

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

  1. // ==UserScript==
  2. // @name        Google Analytics opt-out
  3. // @namespace   zdnq5fclhrdh8lgo
  4. // @match       *://*/*
  5. // @grant       none
  6. // @version     1.2
  7. // @license     MIT
  8. // @description Defines the Google Analytics opt-out object on every page.
  9. // @run-at      document-start
  10. // @inject-into content
  11. // ==/UserScript==
  12.  
  13. (function () {
  14. 	"use strict";
  15.  
  16. 	const defineOptout = (null, function (unwrapper = (x)=>x, exporter = (f)=>f) {
  17. 		const _gaUserPrefs = new window.Object();
  18. 		const ioo = exporter(function ioo() { return true; });
  19.  
  20.  
  21. 		// Define property directly if this is an Xray
  22. 		Reflect.defineProperty(unwrapper(_gaUserPrefs), "ioo", {
  23. 			enumerable: true,
  24. 			configurable: false,
  25. 			get: exporter(() => ioo),
  26. 			set: exporter(() => {})
  27. 		});
  28.  
  29. 		Reflect.defineProperty(unwrapper(window), "_gaUserPrefs", {
  30. 			enumerable: false,
  31. 			configurable: false,
  32. 			get: exporter(() => _gaUserPrefs),
  33. 			set: exporter(() => {})
  34. 		});
  35. 	});
  36.  
  37.  
  38. 	if ("wrappedJSObject" in window) {
  39. 		// Bypass Firefox sandbox
  40. 		defineOptout(XPCNativeWrapper.unwrap, (f) => exportFunction(f, window));
  41. 	} else {
  42. 		// Inject script tag (Chrome)
  43. 		const script = document.createElement("script");
  44. 		script.text = `"use strict";(${defineOptout})();`;
  45. 		(document.head ?? document.documentElement).prepend(script);
  46. 		script.remove();
  47. 	}
  48. })();