tampermonkey script to force LinkedIn feed to 'Recent', rather than 'Top'

LinkedInRecentPlease.user.js

// ==UserScript==
// @name         LinkedIn Recent Feed
// @namespace    http://tampermonkey.net/
// @version      0.4
// @description  I always want my LinkedIn feed in chronological order!
// @downloadURL  https://gist.github.com/pccasto/708b097ecbf1b9b8e22c30e450df804e/raw/ae930ab765918d7d0d74622e4176b300f2b85e12/LinkedInRecentPlease.user.js
// @author       pcasto
// @include      https://linkedin.com/*
// @include      https://www.linkedin.com/*
// @exclude      https://www.linkedin.com/tscp-serving/*
// @grant        none
// @run-at       document-idle
// @require      https://gist.githubusercontent.com/BrockA/2625891/raw/9c97aa67ff9c5d56be34a55ad6c18a314e5eb548/waitForKeyElements.js
// ==/UserScript==

// v0.4 add in a missing require statement for the waitForKeyElements, and tests to avoid acting on /feed/news, etc.
// v0.3 handle the url changes through pushstate - site uses AJAX and changes URL to avoid reload (maybe pjax?)
// v0.2 handle the real world, instead of first trivial case, due to dynamic emberIDs

'use strict';
var recentSort;
var topSort = 'Top'; // change for other languages
var triggerSelector = "#voyager-feed div.core-rail button.dropdown-trigger";
var triggerAvailableSelector = "#voyager-feed .dropdown .ember-view";

// use jQuery from the page
// var $ = window.$;

(recentSort = function() {
    // Only needed on the /feed page - this handles case where starting URL is /jobs, etc
    if(window.location.href.indexOf("/feed") === -1) return;
    // and not /feed/new/..., etc.
    if(window.location.href.match(/\/feed\/.+/)) return;

    // if only it could be this easy... hence v 0.2 ...
    // ($("#ember16048-trigger") === 'Recent') || $("#ember16048-trigger").click() && $("#ember16048-options > li:eq(1) > button").click();
    // the IDs "ember####-trigger" and ember-####-options are dynamic, and elements have no fixed IDs so need to select based on structure and class

    var $trigger = window.$(triggerSelector);
    if ($trigger.length === 0) return; // not sure if this is effective at short-circuiting the test
    console.log("Recent sort: ", window.location.href);

    if ($trigger.find("span:eq(0)").text().trim() === topSort) {
        ($trigger.attr('aria-expanded') === 'true') || $trigger.click();
        var optionsName = $trigger.attr('aria-controls');
        if (optionsName === "" || optionsName === "undefined") {
            console.log("could not get aria-controls info from linkedin feed order")
        } else {
            window.$("#" + optionsName).find("li:eq(1) > button").click(); // 'Top' then 'Recent' is all I've seen.
        }
    }

})();

(function(history){
    var pushState = history.pushState;
    history.pushState = function(state) {
        if (typeof history.onpushstate == "function") {
            history.onpushstate({state: state});
        }
        // ... whatever else you want to do
        // maybe call onhashchange e.handler
        return pushState.apply(history, arguments);
    };
})(window.history);

// Tried 'waitFor, instead of requiring/including waitForKeyElements
// but when I added that code, it would cause script to fail even if I wasn't calling the function...
// https://stackoverflow.com/questions/12897446/userscript-to-wait-for-page-to-load-before-executing-code-techniques

window.onpopstate = history.onpushstate = function(e) {
    // console.log("pushstate fired: ", e.state.path);
    if (e.state.path.match(/\/feed\/$/)) {
        waitForKeyElements(triggerAvailableSelector, recentSort);
    }
    return e;
};

v0.3 now supports the page navigation and alternate entry points. e.g starting with /jobs, and then going to /feed.

Currently throws an error in console: Uncaught (in promise) TypeError: window.$ is not a function

Haven't had Tampermonkey enabled for quite some time, and only occasionally visit LinkedIn these days.
But I've turned that back on, and will see if I can spot what has changed.
I do see the error you mentioned.
If I find something I'll update the code.