Add repo/branch links to GitHub's "Comparing Changes" page

This adds a link to the fork's branch on the GitHub "Comparing changes" page (AKA the "Create a Pull Request" page). See https://stackoverflow.com/questions/77623282/how-do-i-get-my-remote-branch-url-from-the-github-create-pull-request-page for more details.

As of 08. 12. 2023. See the latest version.

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// ==UserScript==
// @name         Add repo/branch links to GitHub's "Comparing Changes" page
// @namespace    http://tampermonkey.net/
// @version      0.2
// @description  This adds a link to the fork's branch on the GitHub "Comparing changes" page (AKA the "Create a Pull Request" page). See https://stackoverflow.com/questions/77623282/how-do-i-get-my-remote-branch-url-from-the-github-create-pull-request-page for more details.
// @author       DanKaplanSES
// @match        https://github.com/*/*/compare/*...*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=github.com
// @require      https://code.jquery.com/jquery-3.7.1.min.js
// @grant        none
// @license MIT
// ==/UserScript==
 
jQuery.noConflict(true)(function($) {
    function modifyPage() {
        const isPageAlreadyModified = $(`#browse-link-0`).length > 0;
        if (isPageAlreadyModified) {
            return;
        }
        const browseRepoHtml = `<div class="browse-repo"><a href="#" target="_blank">Browse Repo</a></div>`;
        const browseBranchHtml = `<div class="browse-branch"><a href="#" target="_blank">Browse Branch</a></div>`;
 
        $(`.range-cross-repo-pair details`).wrap(`<div class="details-container"></div>`);
        $(`.details-container`).each(function (index) {
            const isIndexEven = index % 2 === 0;
            const html = isIndexEven ? browseRepoHtml : browseBranchHtml;
            const href = buildHref(isIndexEven ? "repo" : "branch", index);
            $(this).css({"display": `inline-block`})
                .append(html).css({"text-align": `center`})
                    .find(`a`).attr({id: `browse-link-${index}`, href});
        });
        $(`.range-editor .pre-mergability, .range-editor .d-inline-block`).css({"vertical-align": `top`});
    }
 
    function buildHref(hrefType, index) {
        switch (hrefType) {
            case "repo":
                return `/` + $(`.css-truncate-target`)[index].textContent;
            case "branch":
                return `/` + $(`.css-truncate-target`)[index - 1].textContent + `/tree/` + $(`.css-truncate-target`)[index].textContent;
            default:
                throw new Error(`Unexpected hrefType: ${hrefType}`);
        }
    }
 
    const isPageLoaded = $(`.range-cross-repo-pair details`).length > 0;
    if (isPageLoaded) {
        modifyPage();
    }
 
    setInterval(modifyPage, 1500);
});