concurrent-rendering

Modern React state management framework with concurrent features and modern toolchain

A hands-on React demo that demonstrates useTransition — loading 5,000 items without blocking the UI. Features isPending state, live stats, and a real-time status indicator.

A requestAnimationFrame-paced render loop that no framework's guard catches: pure waste on Vue 3, Svelte 5 and legacy React, a permanent Suspense deadlock on concurrent React. Live demos, four renderers, measured.

React Suspense, ErrorBoundary, and useTransition primitives for Flutter