bug1902520-keisan.nta.go.jp-spoof-windows11.js

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/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

"use strict";

if (!navigator.userAgent.includes("NT 11.0")) {

  let val;

  Object.defineProperty(window, "OS_TYPE_ETAX", {

    configurable: true,

    get: () => val,

    set: x => {

      val = x;

      x.OTHER_WINDOWS = x.WINDOWS_11;

      x.WINDOWS_10 = x.WINDOWS_11;

},

});

  const final_ua = navigator.userAgent.replace("NT 10", "NT 11.0");

  const nav = Object.getPrototypeOf(navigator);

  const ua = Object.getOwnPropertyDescriptor(nav, "userAgent");

  ua.get = () => final_ua;

  Object.defineProperty(nav, "userAgent", ua);