◷ spec sheet · the react native runtime
Every concept laid out like an engineering drawing — labeled, annotated, and animated step by step. The Bridge, JSI, Fabric, Hermes, the threads.
How JS and Native threads communicate asynchronously
Why React Native splits work across the JS, layout, and main threads
Direct synchronous JS-to-Native calls without the Bridge
Mount → render → update → unmount, step by step
How state changes trigger reconciliation and commits
When it fires, cleanup, and the dependency array
How the render window mounts only the rows near the viewport