react-brain weekly

One issue per harvest pass. Every item was fetch-verified before it entered the corpus, and every link is a receipt — the primary source for the claim, plus the entry page carrying the full argument with its dates and caveats. A quiet week ships a short issue; there are no filler issues.

#2 · 2026-09-10

React 19.3 shipped — and quietly admitted Trusted Types never worked

React 19.3 graduates View Transitions and Fragment Refs — but the line worth reading twice sits in the security section, where React finally stopped string-coercing the values that made your Trusted Types policy a no-op. Plus four navigation libraries measured on one phone, what Discord actually spent a year fixing, and why "just use the library" got more arguable.

Issues are written from the harvest manifests intools/harvest-log/ — the same receipts the corpus itself is gated on.