https://disniverse.com/discord-invite.js

1/**
2 * Swap decoy Discord invite links (in HTML for scrapers) to the live community invite.
3 * Decoy code: document.documentElement[data-discord-decoy]
4 * Live code: only in this file (never emitted from PHP/HTML).
5 */
6(function (global) {
7  'use strict';
8
9  var LIVE_INVITE_CODE = '7qVBUTebX7';
10  var LIVE_INVITE_URL = 'https://discord.gg/' + LIVE_INVITE_CODE;
11  var LINK_SELECTOR = 'a.discord-invite[href]';
12  var ACTIVATED_ATTR = 'data-discord-invite-live';
13
14  var decoyCodeCache = null;
15
16  function readDecoyCode() {
17    if (decoyCodeCache !== null) {
18      return decoyCodeCache;
19    }
20    var fromDom = document.documentElement.getAttribute('data-discord-decoy');
21    if (typeof fromDom === 'string' && /^[A-Za-z0-9]+$/.test(fromDom)) {
22      decoyCodeCache = fromDom;
23      return decoyCodeCache;
24    }
25    decoyCodeCache = 'YdMes7g6';
26    return decoyCodeCache;
27  }
28
29  function discordInviteSlug(href) {
30    try {
31      var url = new URL(href, document.baseURI || global.location.href);
32      var host = url.hostname.toLowerCase();
33      if (host !== 'discord.gg' && host !== 'www.discord.gg' && host !== 'discord.com' && host !== 'www.discord.com') {
34        return null;
35      }
36      var slug = url.pathname.replace(/^\/+/, '').split('/')[0];
37      return slug || null;
38    } catch (err) {
39      return null;
40    }
41  }
42
43  function isDecoyInviteLink(anchor) {
44    if (!(anchor instanceof HTMLAnchorElement)) {
45      return false;
46    }
47    if (anchor.hasAttribute(ACTIVATED_ATTR)) {
48      return false;
49    }
50    var slug = discordInviteSlug(anchor.getAttribute('href') || '');
51    return slug !== null && slug === readDecoyCode();
52  }
53
54  function activateInviteLink(anchor) {
55    anchor.href = LIVE_INVITE_URL;
56    anchor.setAttribute(ACTIVATED_ATTR, '1');
57  }
58
59  function applyDiscordInvites(root) {
60    var scope = root && typeof root.querySelectorAll === 'function' ? root : document;
61    scope.querySelectorAll(LINK_SELECTOR).forEach(function (anchor) {
62      if (isDecoyInviteLink(anchor)) {
63        activateInviteLink(anchor);
64      }
65    });
66  }
67
68  function observeDom() {
69    if (typeof MutationObserver !== 'function' || !document.documentElement) {
70      return;
71    }
72
73    var pending = false;
74
75    var flush = function () {
76      pending = false;
77      applyDiscordInvites(document);
78    };
79
80    var schedule = function () {
81      if (pending) {
82        return;
83      }
84      pending = true;
85      if (typeof requestAnimationFrame === 'function') {
86        requestAnimationFrame(flush);
87      } else {
88        setTimeout(flush, 0);
89      }
90    };
91
92    new MutationObserver(schedule).observe(document.documentElement, {
93      childList: true,
94      subtree: true,
95    });
96  }
97
98  function init() {
99    applyDiscordInvites(document);
100    observeDom();
101  }
102
103  global.applyDiscordInvites = applyDiscordInvites;
104
105  if (document.readyState === 'loading') {
106    document.addEventListener('DOMContentLoaded', init);
107  } else {
108    init();
109  }
110})(typeof window !== 'undefined' ? window : globalThis);