Deep-dive — React 19 features at work

Appendix 7.A3 — React 19 at work vs the browser runtime Team Radar uses.

playstepchallengeinstructor

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Download HTML/JSVite serves SolidJS bundle to the browser

React 19 (work context)

• Actions — async transitions with pending UI states
• use() — read promises/context in render
• Document metadata — head tags from components

These solve React app ergonomics — not a reason to swap SolidJS on radar.

Same runtime, different library

Both run in the pipeline above: fetch → parse → JS → paint. Solid signals and React hooks are library choices atop the same browser.

Pattern judgment

Adopt React 19 patterns in maverick-ui where the team ships React. Teach event-driven design in millipede with the PDF stack.

Teach-back prompt

Name one React 19 feature you would demo at work but would not port to radar — and why.