https://odoo.pantalytics.com/mail/static/src/discuss/call/common/tick_worker.js

1/* eslint-env worker */
2/* eslint-disable no-restricted-globals */
3
4let intervalId = null;
5let awaitingTock = false;
6let isRunning = false;
7
8function reset() {
9    if (intervalId) {
10        clearInterval(intervalId);
11        intervalId = null;
12    }
13    awaitingTock = false;
14    isRunning = false;
15}
16
17function startProcessing(fps) {
18    if (isRunning) {
19        return;
20    }
21    isRunning = true;
22    intervalId = setInterval(() => {
23        if (awaitingTock) {
24            return;
25        }
26        awaitingTock = true;
27        self.postMessage({ command: "tick" });
28    }, Math.floor(1000 / (fps || 30)));
29}
30
31self.onmessage = (e) => {
32    if (!e.data?.command) {
33        return;
34    }
35    const { command, fps } = e.data;
36    switch (command) {
37        case "start":
38            startProcessing(fps);
39            break;
40        case "tock":
41            awaitingTock = false;
42            break;
43        case "stop":
44            reset();
45            break;
46        default:
47            break;
48    }
49};
50
51self.onmessageerror = () => {
52    awaitingTock = false;
53};
54
55self.onerror = reset;