https://www.mk-kaliningrad.ru/sw/pwa-ui.js

1(function (root) {
2    'use strict';
3
4    if (!('serviceWorker' in root.navigator)) {
5        return;
6    }
7
8    var layers = root.MKPwaUi && root.MKPwaUi.layers ? root.MKPwaUi.layers : null;
9    if (!layers) {
10        return;
11    }
12
13    var bootstrap = root.__PWA_UI_BOOTSTRAP__ || {};
14    var logEnabled = /(?:\?|&)pwa_debug=1(?:&|$)/.test(root.location.search || '');
15    var config = {
16        staleHomeUiEnabled: false,
17        swUrl: typeof bootstrap.swUrl === 'string' && bootstrap.swUrl ? bootstrap.swUrl : '/sw.js',
18        enableLogLayer: logEnabled,
19        domInstallButtonSelector: typeof bootstrap.domInstallButtonSelector === 'string' && bootstrap.domInstallButtonSelector
20            ? bootstrap.domInstallButtonSelector
21            : '[data-pwa-install-button]'
22    };
23    var logger = {
24        enabled: logEnabled,
25        info: function () {
26            if (logEnabled && root.console && typeof root.console.info === 'function') {
27                root.console.info.apply(root.console, arguments);
28            }
29        },
30        warn: function () {
31            if (root.console && typeof root.console.warn === 'function') {
32                root.console.warn.apply(root.console, arguments);
33            }
34        },
35        log: function () {
36            if (logEnabled && root.console && typeof root.console.log === 'function') {
37                root.console.log.apply(root.console, arguments);
38            }
39        }
40    };
41
42    logger.log('[PWA sw]', config.swUrl);
43
44    var context = {
45        config: config,
46        logger: logger,
47        install: null,
48        swBridge: null,
49        trackPwaEvent: function (name, payload) {
50            logger.info('[PWA]', name, payload || {});
51        }
52    };
53
54    context.install = layers.createInstallLayer(context);
55    context.swBridge = layers.createSwBridgeLayer(context);
56    context.swBridge.requestStaleHomeNotice();
57
58    root.MKPageState = root.MKPageState || {};
59    root.MKPageState.pwa = {
60        swUrl: config.swUrl,
61        logging: config.enableLogLayer
62    };
63
64    root.addEventListener('load', function () {
65        context.swBridge.register();
66    });
67})(window);