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React 19.3
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React 19.3 makes View Transitions and Fragment Refs stable APIs, allowing declarative animations tied to state changes without manual DOM manipulation
Engineers can now animate UI updates predictably by wrapping components in <ViewTransition> and marking state changes as Transitions. The feature integrates with React’s concurrent rendering, so animations only run for non-urgent updates. Browser support for the underlying View Transition API is still required, so fallbacks or polyfills may be needed for older clients
Written by elseif from the cluster below · every claim links back to a sourceThe three things worth knowing
View Transitions in React 19.3 animate component mount, unmount, and style changes declaratively using the browser’s View Transition API
Fragment Refs are now stable, allowing refs to be attached to React Fragments for direct DOM access without extra wrapper elements
Trusted Types support and a new browser() utility are included for improved security and environment detection in React DOM
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