Attempts to show the non-paywalled version of Wall Street Journal articles

no-wsj-paywall.user.js

// ==UserScript==
// @name         Remove WSJ Paywall
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Attempts to show the non-paywalled version of Wall Street Journal articles
// @author       AfroThundr
// @include      https://www.wsj.com/articles/*
// @grant        none
// @run-at       document-start
// ==/UserScript==

(function() {
    'use strict';

    if (document.location.pathname.indexOf('/articles/') > -1 &&
        document.location.search !== '?mod=rsswn') {
        if (document.location.search !== '') {
            document.location.replace(
                document.location.href.replace(/\?.*/, '?mod=rsswn')
            );
        } else {
            document.location.replace(
                document.location.href.replace(/$/, '?mod=rsswn')
            );
        }
    }
})();

Or perhaps this would suffice:

(function() {
    'use strict';

    if (document.location.search !== '?mod=rsswn') {
        document.location.replace(
            document.location.origin + document.location.pathname + '?mod=rsswn'
        );
    }
})();