https://krisflyercruise.com/Scripts/statsig-singleton.js

1(function (global) {
2
3    if (global.StatsigSingleton) return;
4
5    let _client = null;
6    let _readyPromiseResolve;
7    let _readyPromise = new Promise(resolve => {
8        _readyPromiseResolve = resolve;
9    });
10
11    async function init(config) {
12
13        if (_client) return _readyPromise;
14
15        const {
16            clientKey,
17            userID,
18            customIDs,
19            environment
20        } = config;
21
22        const { StatsigClient, StatsigAutoCapturePlugin, StatsigSessionReplayPlugin } = global.Statsig;
23
24        _client = new StatsigClient(
25            clientKey,
26            {
27                userID,
28                customIDs,
29                city: '-'
30            },
31            {
32                environment: { tier: environment },
33                plugins: [
34                    new StatsigAutoCapturePlugin({
35
36                        eventFilterFunc: (event) => {
37                            if (event.metadata) {
38                                delete event.metadata['city'];
39                            }
40                            if (event.user) {
41                                delete event.user.city;
42                                if (event.user.custom) {
43                                    delete event.user.custom.city;
44                                }
45                            }
46                            return event;
47                        }
48
49                    }),
50                    new StatsigSessionReplayPlugin()
51                ]
52            }
53        );
54
55        _client.initializeAsync()
56            .then(() => {
57                _readyPromiseResolve();  // Resolve the promise
58            })
59            .catch((e) => {
60                _readyPromiseResolve(); // Resolve the promise
61            });
62
63        return _readyPromise;
64    }
65
66    function client() {
67        return _client;
68    }
69
70    function ready() {
71        return _readyPromise;
72    }
73
74    global.StatsigSingleton = {
75        init,
76        client,
77        ready
78    };
79
80})(window);
81
82