direct-links-on-slack.user.js

// ==UserScript==
// @name        Direct links on slack
// @namespace   https://github.com/lgp171188
// @description Direct links on slack
// @include     https://*.slack.com/*
// @version     1
// @grant       none
// ==/UserScript==

function makeSlackLinksDirect() {
  var links = document.querySelectorAll('a[onclick^=this\\.href\\=\\"https\\:\\/\\/slack-redir]'),  
    link,
    i = links.length;
  while (i--) {  
    link = links[i];
    link.removeAttribute('onclick');
    link.parentNode.replaceChild(link.cloneNode(true), link);
  }
}

document.addEventListener('DOMNodeInserted', makeSlackLinksDirect);
makeSlackLinksDirect();

This exist as a browser extensions? Because I can do it in case :-)