How React’s Activity component helps keep state alive

#​465 — March 6, 2026 Read on the Web React Status Seven Years to TypeScript: Migrating 11,000 Files at Patreon — The creator monetization platform had a million lines of largely React-based JavaScript on its hands, and while adopting TypeScript on new code was going well, getting all their code (often using legacy React conventions) upgraded was daunting. This insight-heavy retrospective covers the tools and techniques involved. Gavy Aggarwal (Patreon) npx workos: An AI Agent That Writes Auth Into Your Codebase — Reads your project, detects your framework, and writes a complete auth integration into your existing codebase. It then typechecks, builds, and self-corrects any errors. Just run npx workos . WorkOS sponsor How Activity Can Keep Your Video Where You Left It — A look at using React 19.2’s Activity component to preserve video playback state across visibility changes, though the technique can apply to any situation where component state needs to survive being hidden. Joshua Alph