User script to add a heading when reviewing a suggested edit on the Stack Exchange Network.

SuggestedEditsQueueImprovements.user.js

// ==UserScript==
// @name         Heading in suggested edits queue
// @version      1.1
// @description  Adds a heading to better indicate whether one is reviewing an edit on a question or an answer, and whether this post is closed.
// @author       Jan Wichelmann
//
// @include      https://*stackoverflow.com/review/suggested-edits/*
// @include      https://*serverfault.com/review/suggested-edits/*
// @include      https://*superuser.com/review/suggested-edits/*
// @include      https://*askubuntu.com/review/suggested-edits/*
// @include      https://*mathoverflow.net/review/suggested-edits/*
// @include      https://*.stackexchange.com/review/suggested-edits/*
// @include      https://stackapps.com/review/suggested-edits/*
//
// ==/UserScript==

(function() {
    'use strict';

    function improveReviewUi()
    {
        // Find suggested edit div
        let suggestedEditDiv = $('div[id^=suggested-edit-]');
        if(suggestedEditDiv.length == 0)
            return;

        // Check post type
        let postIsQuestion = false;
        let postIsAnswer = false;
        if(suggestedEditDiv.hasClass('post-type-id-1'))
            postIsQuestion = true;
        else if(suggestedEditDiv.hasClass('post-type-id-2'))
            postIsAnswer = true;

        // Check post state
        let titleText = $('div.summary > h2 > a').text();
        let postIsClosed = false;
        let postIsDuplicate = false;
        if(titleText.includes('[closed]'))
            postIsClosed = true;
        if(titleText.includes('[duplicate]'))
            postIsDuplicate = true;

        // Compose heading
        let newHeading = '';
        if(postIsQuestion)
        {
            newHeading += 'Question';
            if(postIsClosed)
                newHeading += ' (closed)';
            if(postIsDuplicate)
                newHeading += ' (closed as duplicate)';
        }
        else if(postIsAnswer)
        {
            newHeading += 'Answer';
            if(postIsClosed)
                newHeading += ' (question closed)';
            if(postIsDuplicate)
                newHeading += ' (question closed as duplicate)';
        }

        // Add new heading
        $('div.review-content > div.mainbar-full').prepend('<h2>' + newHeading + '</h2>');
    }

    // Run function on page load
    improveReviewUi();

    // ...and on each page update
    $(document).ajaxComplete(function(event, xhr, settings)
    {
        if(settings.url.includes('/review/next-task') || settings.url.includes('/review/task-reviewed/'))
        {
            // Ignore inline edits
            if(!location.href.includes('/questions/'))
            {
                improveReviewUi();
            }
        }
    });
})();