Exploring Lynx.js and Its Two-Thread Runtime @CallstackEngineers
Exploring Lynx.js and Its Two-Thread Runtime  @CallstackEngineers
Uploaded November 2025 | Updated September 2026, 4 hours ago
Lynx.js introduces a distinct two-thread model that separates UI updates from application logic, and this session follows Łukasz Chludziński and Kewin Wereszczyński as they take their first steps with it. Starting from a fresh project, they explore how Lynx structures execution and where thread boundaries show up inside everyday component code.

The stream walks through the official gallery tutorial, covering project layout, JSX structure, asset handling, and the thread-aware props that shape how interactions work. Along the way, they troubleshoot type definitions, imports, and file placement—each adjustment revealing more about how Lynx expects code to be organized.

By the end, the flow between the main thread and the background engine becomes easier to follow, especially in components that rely on main-thread bindings for UI-driven interactions. This session sets the groundwork for understanding Lynx’s execution model and prepares the field for the next episode.

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Exploring Lynx.js and Its Two-Thread Runtime

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