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Tagged: React 19
React 19.3 Beyond the Headlines: submitter, Fullscreen Props and Bundle Size
A practical tour of React 19.3's smaller changes: the submitter property, fullscreen event props, parallel Transitions, onReset, notable bug fixes and the real size increase.
11 min readDropping the Provider Wrapper: Rendering Context from Server Components
Learn how React 19.3 lets a Server Component render a client Context directly, how Flight serializes it, and which limits on reading and values still apply.
7 min readFragment Refs in React 19.3: DOM Behavior for Sibling Groups, No Wrapper
Learn how a ref on Fragment gives you a FragmentInstance for listeners, focus, observers and measurement across sibling elements, and where its limits are.
12 min readAsync Forms in React 19 with use, useActionState and useOptimistic
How use(), useActionState, useFormStatus and useOptimistic replace manual loading and error flags in React 19, with the pitfalls each hook quietly hides.
4 min readAdopting React 19.2: Activity for Tabbed UIs and an Upgrade Checklist
How React 19.2's Activity keeps hidden tabs alive, where useEffectEvent and pre-rendering fit, and how to decide whether to upgrade and patch RSC apps now.
4 min readRetiring the Latest-Value Ref: Effect Events with useEffectEvent
Learn how useEffectEvent in React 19.2 separates non-reactive logic from an effect, removes latest-value ref hacks, and when the hook is the wrong tool.
4 min readPicking the Right React Tool: Derive, Handle, Fetch, Defer or Effect
A decision guide for replacing reflexive useEffect calls with derived values, event handlers, a data layer, useTransition, measured useMemo and React 19 APIs.
8 min readReact 19 Upgrade Triage: Which New APIs Replace Workarounds You Have
A practical look at use, Server Actions, useOptimistic and the React Compiler, with the caveats that matter and a plan for which React 19 changes to adopt first.
7 min readReading React Performance Tracks in Chrome DevTools to Find Slow Renders
Learn how the Scheduler, Components and Server tracks added in React 19.2 show where a slow interaction spends its time, and a record-fix-record workflow to act on it.
5 min read
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