GitHub Actions prevent auto-scroll のソースコード

GitHub Actions prevent auto-scroll

Prevents Actions page from automatically opening and scrolling down to the last failed job
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// ==UserScript==
// @name        GitHub Actions prevent auto-scroll
// @namespace   GitHubActions_2good
// @icon        data:image/svg+xml;base64,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
// @version     1.0.0
//
// @match       https://github.com/*/*/actions/*
//
// @author      2good
// @license     MIT
// @description Prevents Actions page from automatically opening and scrolling down to the last failed job
// ==/UserScript==

(function () {
    "use strict";

    function collapseFailedDetails() {
        const failedDetails = document.querySelectorAll(
            'details[data-conclusion="failure"][open]'
        );

        failedDetails.forEach(el => {
            if (el.hasAttribute("manually-opened")) return;
            el.removeAttribute("open");
        });
    }

    // Mark user-initiated opens so the observer doesn't fight them
    document.addEventListener("click", e => {
        const details = e.target.closest('details[data-conclusion="failure"]');
        if (details) {
            details.setAttribute("manually-opened", "");
        }
    });

    // Run immediately
    collapseFailedDetails();

    // Temporary observer to prevent GitHub from re-opening
    const observer = new MutationObserver(mutations => {
        mutations.forEach(m => {
            if (
                m.type === "attributes" &&
                m.attributeName === "open" &&
                m.target.matches('details[data-conclusion="failure"]') &&
                !m.target.hasAttribute("manually-opened")
            ) {
                m.target.removeAttribute("open");
            }
        });
    });

    observer.observe(document.body, {
        attributes: true,
        subtree: true,
        attributeFilter: ["open"],
    });

    setTimeout(() => observer.disconnect(), 2000);
})();