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gkucmierz/interface_lag_detector.js

Last active March 3, 2026 11:08
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interface_lag_detector.js
const lagDetector = (() => {
let run = true;
const TRESHOLD = 1e3/60 + 1; // ~60 FPS
let lastTime = +new Date();
(function loop() {
const time = +new Date();
const diff = time - lastTime;
if (diff > TRESHOLD) {
console.log(`Interface blocked for ${diff}ms`);
}
lastTime = time;
run && setTimeout(loop, 1);
})();
return { stop: () => run = false };
})();
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