Gitlab CE - Link to upgrade path from help page

Add a link to the upgrade path tool on Gitlab help page.

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

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

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

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

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

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

(I already have a user script manager, let me install it!)

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.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name        Gitlab CE - Link to upgrade path from help page
// @namespace   Violentmonkey Scripts
// @match       https://gitlab.*/help
// @grant       none
// @version     1.0
// @author      PotatoesMaster
// @description Add a link to the upgrade path tool on Gitlab help page.
// @run-at document-end
// @license     WTFPL
// ==/UserScript==

const tagA = document.querySelector('a[href^="https://gitlab.com/gitlab-org/gitlab-foss/-/tags/v"]');
if (tagA) {
  const tag = tagA.href.split('tags/v')[1];

  // addapt the following parameters according to your Gitlab install
  const params = new URLSearchParams({
    distro: 'docker',
    edition: 'ce',
    current: tag,
  });

  const upgradeA = document.createElement('a');
  upgradeA.href = `https://gitlab-com.gitlab.io/support/toolbox/upgrade-path/?${params}`;
  upgradeA.innerText = "-> upgrade path";
  tagA.insertAdjacentElement('afterend', upgradeA);
  tagA.insertAdjacentText('afterend', ' ');
}