Sorts all notifications chronologically and hides section titles & borders.
// ==UserScript==
// @name YouTube Remove Important Notifications
// @namespace https://github.com/crazyrabbit0
// @version 1.0
// @description Sorts all notifications chronologically and hides section titles & borders.
// @author CrazyRabbit
// @match http://*.youtube.com/*
// @match https://*.youtube.com/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=youtube.com
// @grant none
// @license GPL-3.0-or-later; http://www.gnu.org/licenses/gpl-3.0.txt
// @copyright 2023+, CrazyRabbit (https://github.com/crazyrabbit0)
// @homepageURL https://github.com/crazyrabbit0/UserScripts
// @supportURL https://github.com/crazyrabbit0/UserScripts/issues/new?assignees=crazyrabbit0&labels=help+wanted&template=&title=YouTube%20Remove%20Important%20Notifications%20-%20Issue
// @run-at document-start
// @noframes
// ==/UserScript==
(function () {
'use strict';
// YouTube DOM structure selectors
const NOTIFICATION_SELECTORS = {
button: 'ytd-notification-topbar-button-renderer',
panel: 'ytd-multi-page-menu-renderer #sections',
section: 'yt-multi-page-menu-section-renderer',
title: '#section-title',
items: '#items',
item: 'ytd-notification-renderer',
time: 'div.metadata yt-formatted-string:last-of-type'
};
// Constants for timing
const BUTTON_POLL_INTERVAL = 200; // ms - interval for checking if the button is available
const OBSERVER_RETRY_DELAY = 200; // ms - delay before retrying to setup observer
const MERGE_DEBOUNCE_DELAY = 200; // ms - delay for debouncing merge operations
// Global variables to manage the MutationObserver and debounce timer
let notificationObserver = null;
let debounceTimer = null;
/**
* Parses YouTube's time element (e.g., "5 hours ago", "2 days ago") into minutes for chronological sorting
* Handles common time units: seconds, minutes, hours, days, weeks, months, years
* Returns Infinity for invalid time strings to ensure they appear at the end of sorted results
* @param {string} timeElement - The time element to parse (e.g., "5 hours ago")
* @returns {number} Notification time in minutes or Infinity if parsing fails
*/
const parseTimeToMinutes = (timeElement) => {
if (!timeElement) return Infinity;
// Clean and split the string into parts
const string = timeElement?.textContent.toLowerCase();
const parts = string.split(' ');
// Parse the numeric value
const value = parseInt(parts[0], 10);
if (isNaN(value)) return Infinity;
// Normalize the unit by removing 's' if it's plural
const unit = parts[1].endsWith('s') ? parts[1].slice(0, -1) : parts[1];
// Lookup map for converting various time units to minutes
const timeMultipliers = new Map([
['second', 1 / 60], // Convert seconds to fractional minutes
['minute', 1], // Minutes stay as-is
['hour', 60], // Hours to minutes
['day', 1440], // Days to minutes (24 * 60)
['week', 10080], // Weeks to minutes (7 * 24 * 60)
['month', 43200], // Months to minutes (30 * 24 * 60)
['year', 525600] // Years to minutes (365 * 24 * 60)
]);
// Direct lookup for the normalized unit
const multiplier = timeMultipliers.get(unit);
return multiplier !== undefined ? value * multiplier : Infinity;
};
/**
* Sorts all notifications chronologically across the 'Important' and 'Main' sections
* Also hides the section titles.
* @param {HTMLElement} panel - The container element holding notification sections
*/
const sortNotifications = (panel) => {
notificationObserver.disconnect(); // Disconnect to prevent recursive triggers
const sections = panel.querySelectorAll(NOTIFICATION_SELECTORS.section);
if (sections.length < 2) return; // Need both 'Important' and 'Main' sections to proceed
// Collect all notifications and their parsed times, while hiding section titles and borders
const notificationsToSort = [];
sections.forEach(section => {
// Hide section titles and border
section.querySelector(NOTIFICATION_SELECTORS.title).style.display = 'none';
section.style.border = 'none';
const items = section.querySelector(NOTIFICATION_SELECTORS.items);
const notifications = items.querySelectorAll(NOTIFICATION_SELECTORS.item);
if (!notifications.length) return; // No notifications found
// Gather all notifications
for (const notification of notifications) {
const timeElement = notification.querySelector(NOTIFICATION_SELECTORS.time);
// Create an object with the DOM element and its parsed time
notificationsToSort.push({
element: notification,
time: parseTimeToMinutes(timeElement)
});
}
});
// Sort notifications by time (newest first)
notificationsToSort.sort((a, b) => a.time - b.time);
// Extract only the DOM elements from the sorted notifications
const sortedNotifications = notificationsToSort.map(notification => notification.element);
// Add notifications back into sections
sections.forEach((section, index) => {
const items = section.querySelector(NOTIFICATION_SELECTORS.items);
// For the 'Important' section (index 0), add only the first two notifications
// For the 'Main' section (index 1), add the remaining notifications
const notificationsToAdd = (index === 0) ? sortedNotifications.slice(0, 2) : sortedNotifications.slice(2);
items.prepend(...notificationsToAdd);
});
};
/**
* Creates and attaches a MutationObserver to monitor changes in the notification container
* Uses debouncing to prevent excessive merge operations when multiple notifications are added rapidly
* The observer watches for childList changes (new notifications being added) and triggers merge with a delay
*/
const setupNotificationObserver = () => {
const panel = document.querySelector(NOTIFICATION_SELECTORS.panel);
// Retry after configured delay, if the notification panel isn't rendered yet
if (!panel) {
setTimeout(setupNotificationObserver, OBSERVER_RETRY_DELAY);
return;
}
// Check if any mutation added nodes, then trigger merge with debounce
notificationObserver = new MutationObserver((mutations) => {
if (!mutations.some(mutation => mutation.addedNodes.length > 0)) return; // No relevant changes
// Debounce ensures merge only runs once after a batch of changes complete
clearTimeout(debounceTimer);
debounceTimer = setTimeout(() => sortNotifications(panel), MERGE_DEBOUNCE_DELAY);
});
// Observe section childList changes (element additions/removals)
notificationObserver.observe(panel, {
childList: true,
subtree: false
});
};
/**
* Polls the DOM to find the notification button and attaches a click listener.
*/
const initialize = () => {
const buttonInterval = setInterval(() => {
const button = document.querySelector(NOTIFICATION_SELECTORS.button);
if (!button) return; // No button found
clearInterval(buttonInterval);
// Attach the click listener to initialize the notification observer
button.addEventListener('click', () => {
if (notificationObserver) notificationObserver.disconnect(); // Disconnect any existing observer
setupNotificationObserver();
});
}, BUTTON_POLL_INTERVAL);
};
// Start polling for the notification button
initialize();
})();