Publication
First-party technical writing on React internals, JavaScript systems, and memory models — published for engineers and technical decision makers.
JavaScript arrays are objects with specialized element storage: engines may pack dense indexed elements contiguously, but holes, mixed types, and properties force more general representations.
Work-in-progress buffers hold the next tree, hooks store state on fibers, lanes prioritize updates, and commit applies the finished tree in a short, ordered phase.
Fiber walks units of work depth-first, can pause between units, and only finishes a tree when the work loop completes without higher-priority interruption.
File watchers are event producers on top of the host event loop: changes are detected, queued, and delivered asynchronously—never by busy-waiting in JavaScript.