Linkify ticket numbers in django github pull request

django-github-pull-ticket-linkify.js

// ==UserScript==
// @name           Django github ticket number linkify
// @namespace      django-github-ticket-linkify
// @description    Linkify ticket numbers to django's track on github
// @grant          none 
// @include        https://github.com/*/django/*
// ==/UserScript==

const TICKET_NUMBER_LINKIFY = ' <a target="_new" href="https://code.djangoproject.com/ticket/$1">#$1</a>';

let nodeIterator = document.createNodeIterator(document.body, NodeFilter.SHOW_TEXT, {
    acceptNode: function(node) {
        return /\s#\d+/.test(node.data) ? NodeFilter.FILTER_ACCEPT : NodeFilter.FILTER_REJECT;
    }}, true);
let textNode, node, ticketTextNodes = [];

textNodeLoop:
while (textNode = node = nodeIterator.nextNode()) {
    if (textNode.parentNode.className != 'number') {
        while (node.parentNode) {
            // Avoid creating an anchor inside an existing one
            if (node.tagName == 'A') continue textNodeLoop;
            node = node.parentNode;
        }
        ticketTextNodes.push(textNode);
    }
}

ticketTextNodes.forEach(function(textNode){
    // XXX: Should really replace the nodes instead of sqashing HTML...
    textNode.parentNode.innerHTML = textNode.data.replace(/\s#(\d+)/g, TICKET_NUMBER_LINKIFY);
});