fake-random.user.js

// ==UserScript==
// @name     fake-random-userscript
// @version  0.0.0
// @license  MIT
// @match    https://www.random.org/widgets/integers/*
// ==/UserScript==

(function() {
  "use strict";
  function l(n, t, o) {
    const e = new MutationObserver((i, c) => {
      for (const s of i)
        t(s, c);
    });
    return e.observe(n, {
      childList: true,
      subtree: true,
      ...o
    }), () => e.disconnect();
  }
  let resultIndex = 0;
  const fakeResults = [
    42,
    32,
    100,
    69
  ];
  function getResultNumber() {
    const result = fakeResults[resultIndex];
    resultIndex++;
    if (result === void 0) return;
    return result;
  }
  l(document.body, (mutation) => {
    if (mutation.addedNodes.length === 2) return;
    const el = document.evaluate(
      "/html/body/div/span[5]",
      document,
      null,
      XPathResult.ANY_TYPE,
      null
    );
    const span = el.iterateNext();
    if (!span) return;
    const result = span.querySelector("center > span");
    if (!result) return;
    const resultNum = getResultNumber();
    const num = Number(result.textContent);
    if (Number.isNaN(num) || resultNum === void 0) return;
    result.innerHTML = `${resultNum}<br>`;
  });
})();