Dev Tools · 1h ago
Web Workers, Not Promises, Keep JS UI Responsive
Promises handle waiting but don't offload CPU work from the main thread, causing UI freezes during heavy computation. Web Workers, combined with Comlink and SharedArrayBuffer, enable smooth performance by running tasks in separate threads. A new tutorial provides runnable examples from raw workers to worker pools for both browser and Node.js.
Meridian48 take
The article correctly diagnoses a common async misconception, but the real-world impact depends on whether developers adopt these patterns beyond toy examples.
web-workersjavascript-performance