LinkedInHideInvite.user.js

// ==UserScript==
// @name LinkedIn Hide Invite
// @version 1
// @match *://www.linkedin.com/mynetwork/
// @grant none
// @run-at document-idle
// ==/UserScript==

(function () {
  console.log("Started LinkedIn Hide Invite script");
  
  function hideInvites(cards) {
    Array.prototype.map.call(cards, function(elem) {
      if (elem.getElementsByClassName("button-secondary-small")[0].children[0].innerText === "Invite") {
        elem.setAttribute("style", "visibility: collapse;")
      }
    });
  }
  
  var listRoot = document.getElementsByClassName("mn-pymk-list__cards")[0];
  console.log("listRoot: " + listRoot);
  
  hideInvites(listRoot.children);
  
  var config = {
    childList: true,
  }
  
  /*
  var observer = new MutationObserver( function(mutationsList) {
    console.log("Running observer callback (addedNodes2)");
    for (var mut of mutationsList) {
      console.log(mut);
      hideInvites(mut.addedNodes);
      globalMut = mut;
    }
  });
  */
  
  var observer = new MutationObserver( function(mutationsList) { 
    console.log("Running LinkedIn Hide Invite script observer callback");
    hideInvites(listRoot.children);
  });
  
  
  observer.observe(listRoot, config);
  
  console.log("Finished LinkedIn Hide Invite script");
  
})();