Working notes from React engagements.
September 21, 2026 · CTRLDevs
Remix folded into React Router v7, so a lot of SPAs now have a framework sitting one config file away. What framework mode changes, what it does not, and how to adopt it in increments instead of treating it as a reason to move to Next.js.
Read moreSeptember 21, 2026 · CTRLDevs
Three additions in React 19.2 that change day-to-day work: <Activity> for keeping unmounted UI warm, useEffectEvent for effects that read fresh values without re-running, and React's own tracks in the Chrome performance profiler.
Read moreSeptember 21, 2026 · CTRLDevs
Both routers run in the same Next.js app, which makes this an incremental migration rather than a rewrite. The order we migrate routes in, what breaks at the boundary, and the cases where staying on Pages Router is the correct answer.
Read moreSeptember 18, 2026 · CTRLDevs
A working test strategy for modern React: what belongs in Vitest and Testing Library, why Jest-to-Vitest migrations stall, and how to cover Server Components when the unit-test tooling still cannot render them.
Read moreSeptember 17, 2026 · CTRLDevs
What React 19 actions change about form code in an existing codebase: reading pending state with useFormStatus, modelling results with useActionState, where useOptimistic is the wrong tool, and how this sits alongside React Hook Form.
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