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5115c57 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 | /* _settle_worker.js -- the network keep-alive half of _chart_settle.js (see that file).
*
* Fetches a 1-byte file every 200ms so the page never goes network-idle while its flagship
* chart is still mounting/animating. Runs on a Worker thread so it keeps ticking while the
* main thread is blocked parsing the 10MB app bundle. Stops on the parent's "stop" message,
* or after its own hard cap, whichever comes first -- so it can never wedge a capture.
*/
var PING_MS = 200;
var MAX_PINGS = 90; // 18s ceiling; goto(networkidle) itself gives up at 30s
var n = 0;
function shutdown() {
// Always let any in-flight ping settle before closing (see onmessage below).
clearInterval(id);
setTimeout(function () { self.close(); }, 1000);
}
var id = setInterval(function () {
if (n >= MAX_PINGS) { shutdown(); return; }
try {
fetch('/_settle.txt?s=' + (n++), { cache: 'no-store' }).catch(function () {});
} catch (e) {
shutdown();
}
}, PING_MS);
// Stop pinging, but do NOT close immediately: killing the worker while a ping is still in
// flight leaves that request without a finished/failed event, and Playwright's networkidle
// counter then never returns to zero -- the navigation hangs until goto()'s 30s timeout and
// falls back to `domcontentloaded`, which is the very failure mode this shim exists to stop.
self.onmessage = shutdown;
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