Fix Order of GitHub Dashboard のソースコード

Fix Order of GitHub Dashboard

Keeps entries on the GitHub dashboard page ordered from the newest one to the oldest one, but the More button may not always appear.

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// ==UserScript==
// @name         Fix Order of GitHub Dashboard
// @namespace    http://prantlf.me/
// @version      2.2
// @description  Keeps entries on the GitHub dashboard page ordered from the newest one to the oldest one, but the More button may not always appear.
// @author       [email protected]
// @license      MIT
// @match        https://github.com/
// @icon         https://www.google.com/s2/favicons?sz=64&domain=github.com
// @grant        none
// ==/UserScript==

(function() {
  'use strict';

  const dashboard = document.getElementById('dashboard')
  let observe = true
  const observer = new MutationObserver(mutations => {
    if (observe && mutations.some(mutatedArticle)) {
      console.debug('[fix-order]', 'new articles detected')
      debounce(reorder)
    }
  })
  observer.observe(dashboard, { childList: true, subtree: true })

  function mutatedArticle({ target, addedNodes }) {
    return isOrHasArticle(target) || Array.from(addedNodes).some(isOrHasArticle)
  }

  function isOrHasArticle(el) {
    return el.tagName === 'ARTICLE' || el.nodeType === 1 && el.getElementsByTagName('ARTICLE').length > 0
  }

  let debouncing
  function debounce(fn) {
    if (debouncing) {
      clearTimeout(debouncing)
      debouncing = undefined
    }
    debouncing = setTimeout(fn, 100)
  }

  function reorder() {
    observe = false
    const feeds = Array.from(dashboard.getElementsByTagName('TURBO-FRAME'))
    const articles = feeds
      .map(frame => Array.from(frame.children).filter(el => el.tagName === 'ARTICLE'))
      .flat()
    const position = document.documentElement.scrollTop
    const now = new Date
    for (const article of articles) {
      const { nextElementSibling: div } = article
      article.div = div
      const time = article.querySelector('relative-time')
      article.time = time && new Date(time.getAttribute('datetime')) || now
      article.remove()
      div.remove()
    }
    articles.sort((l, r) => l.time < r.time ? 1 : l.time > r.time ? -1 : 0)
    const feed = feeds[feeds.length - 1]
    let { firstElementChild: anchor } = feed
    for (const article of articles) {
      const { div } = article
      anchor.insertAdjacentElement('afterend', article)
      article.insertAdjacentElement('afterend', div)
      delete article.div
      delete article.time
      anchor = div
    }
    console.debug('[fix-order]', articles.length, 'articles reordered')
    setTimeout(() => {
      document.documentElement.scrollTop = position
      observe = true
    })
  }
})();