https://www.mergedragons.com/scripts/Mercury.js

1class _Mercury {
2  frameWindow;
3
4  constructor(frameWindow) {
5    this.frameWindow = frameWindow;
6  }
7
8  async delegate(f, args) {
9    let savedResolve;
10    const p = new Promise(resolve => (savedResolve = resolve));
11
12    const channel = new MessageChannel();
13
14    channel.port1.onmessage = event => {
15      const { msg } = event.data;
16      if (savedResolve) {
17        if (msg !== undefined) {
18          savedResolve(msg);
19        } else {
20          savedResolve();
21        }
22      }
23    };
24
25    this.frameWindow.postMessage({ f, args }, '*', [channel.port2]);
26
27    return p;
28  }
29
30  async canReceivePush(appId, zid, authToken) {
31    return this.delegate('canSend', { appId, zid, authToken });
32  }
33
34  async optInToPush(appId, zid, authToken, locale = 'en-US') {
35    return this.delegate('beginWebpushTokenCollection', {
36      appId,
37      zid,
38      authToken,
39      locale,
40      isSkipValidation: true,
41    });
42  }
43}
44
45function insertScopedIfrme() {
46  const dom = window.document;
47  const iframe = dom.createElement('iframe');
48  iframe.id = 'mercury';
49  iframe.src = `/scripts/MercurySDK.html`;
50  iframe.style = 'display: none';
51  dom.body.append(iframe);
52  return iframe;
53}
54
55const scopedFrame = insertScopedIfrme();
56scopedFrame.addEventListener('load', function () {
57  window.Mercury = new _Mercury(scopedFrame.contentWindow);
58});
59
60/*
61https://admin.messaging.zynga.com/static/#/templates/game/5002274/template/1404386558
62*/