Replace `require()` calls with links to npm

extension.js

// ==UserScript==
// @name         Replace `require()` calls with links to npm
// @namespace    https://gist.github.com/domharrington
// @version      0.2
// @author       @domharrington
// @match        https://github.com/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    function replaceRequires() {
        Array.from(document.querySelectorAll('.pl-c1')).filter(el => el.textContent === 'require').filter(el => el.nextElementSibling.textContent.match(/^'[^\/|.\/|..\/]/)).map(el => el.nextElementSibling).forEach(el => {
            const textNode = Array.from(el.childNodes).find(node => node instanceof Text);

            const a = document.createElement('a');
            a.href = `https://www.npmjs.com/package/${textNode.textContent}`;
            a.textContent = textNode.textContent;

            el.replaceChild(a, textNode);
        });
    }

    replaceRequires();

    document.addEventListener('pjax:end', replaceRequires);
})();