tampermonkey_redirect_for_akizuki.js

// ==UserScript==
// @name         Redirect for akizuki catalog
// @namespace    http://tampermonkey.net/
// @version      2024-01-26
// @description  Redirects from the old akizuki product page to the new one.
// @author       td2sk
// @match        https://akizukidenshi.com/catalog/g/*/
// @icon         https://www.google.com/s2/favicons?sz=64&domain=akizukidenshi.com
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    const pattern = /^https:\/\/akizukidenshi\.com\/catalog\/g\/g[a-zA-Z]-([0-9]+)\/$/;
    const url = document.URL;

    const m = url.match(pattern);
    if (!m) { return; }
    const newUrl = `https://akizukidenshi.com/catalog/g/g1${m[1]}`;

    window.location.href = newUrl;

})();

This script is no longer needed because the redirect setting has been added to the website itself.