Remove Important YouTube Notifications

Removes the "Important" section in the YouTube notification menu, putting the notifications whithin it back to their appropriate position in the notification list.
当前为 2025-04-05 提交的版本，查看最新版本。
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// ==UserScript==
// @name        Remove Important YouTube Notifications
// @namespace   gf.qytechs.cn/en/users/1436613
// @match       https://www.youtube.com/*
// @version     1.0
// @license     MIT
// @author      gosha305
// @description Removes the "Important" section in the YouTube notification menu, putting the notifications whithin it back to their appropriate position in the notification list.
// ==/UserScript==

let orderOfPrecedence;
let regularNotificationPanel;
let importantNotificationPanel;
let notificationsHandled = false;

const hideImportantNotificationsSection = "ytd-popup-container #sections:has(ytd-notification-renderer),ytd-popup-container #sections:has(ytd-notification-renderer) #section-title {display:none;} ytd-popup-container #sections:has(ytd-notification-renderer.unimportantNotification){display:unset !important;}";

let menuRemover = document.createElement("style");
menuRemover.textContent = hideImportantNotificationsSection;
document.head.appendChild(menuRemover);

let popupContainer = document.querySelector("ytd-popup-container");

(new MutationObserver(function(_,observer){
  const notificationMenu = document.querySelector("ytd-popup-container")?.lastChild
  if (notificationMenu?.nodeName == "TP-YT-IRON-DROPDOWN"){
    (new MutationObserver(function(mutationList){replaceNotifications(mutationList);})).observe(notificationMenu, {attributes: true});
    observer.disconnect();
  }
})).observe(popupContainer, {childList: true, subtree:true})

function replaceNotifications(mutationList){
  const importantNotifications = document.querySelectorAll("yt-multi-page-menu-section-renderer:nth-of-type(1) #items > ytd-notification-renderer");
  if (!importantNotifications || importantNotifications.length == 0) {
    return;
  }
  regularNotificationPanel = document.querySelector("yt-multi-page-menu-section-renderer:nth-of-type(2) #items");
  orderOfPrecedence = getOrderOfPrecendence();
  importantNotifications.forEach(element => {regularNotificationPanel.insertBefore(element,findAppropriatePosition(element)); element.classList.add("unimportantNotification")});
}


function getOrderOfPrecendence(){
  const seen = new Set();
  const nonNumberDateParts = Array.from(regularNotificationPanel.querySelectorAll("ytd-notification-renderer .metadata.style-scope.ytd-notification-renderer > yt-formatted-string:nth-of-type(2)")).map(e => e.textContent.split(" ").filter(part => isNaN(Number(part))).join(''));
  return nonNumberDateParts.filter(e => {if (seen.has(e)) return false; seen.add(e); return true;})
}


function findAppropriatePosition(element){
  const elementParts = element.querySelector(".metadata.style-scope.ytd-notification-renderer > yt-formatted-string:nth-of-type(2)").textContent.split(" ");
  const nonNumberPartsRank = orderOfPrecedence.indexOf(elementParts.filter(e => isNaN(Number(e))).join(''));
  const NumberParts = elementParts.find(e => !isNaN(Number(e)))
  const rep = Array.from(regularNotificationPanel.querySelectorAll("ytd-notification-renderer")).find(e => !compareUploadDateText(e.querySelector(".metadata.style-scope.ytd-notification-renderer > yt-formatted-string:nth-of-type(2)").textContent, nonNumberPartsRank, NumberParts));
  return rep;
}

function compareUploadDateText(date1, nonNumberPartsRank2,date2NumberParts){
  const date1Parts = date1.split(" ");
  const nonNumberPartsRank1 = orderOfPrecedence.indexOf(date1Parts.filter(e => isNaN(Number(e))).join(''));
  if (nonNumberPartsRank1 < nonNumberPartsRank2){
    return true;
  } else if (nonNumberPartsRank1 > nonNumberPartsRank2){
    return false;
  } else {
    return Number(date1Parts.find(e => !isNaN(Number(e)))) < date2NumberParts
  }
}
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