- Security release patching CVE‑2026‑33806.
- Fixes port parsing and restores trustProxy handling for number/string types with null‑check for socketAddr.
- Upgrades TypeScript to v6.0.2 and bumps various dev dependencies; adds @pompelmi/fastify plugin documentation.
v5.8.5
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Fix for two Fastify security advisories (GHSA‑w2qp‑rph6‑63g4 and GHSA‑3m5p‑2c4r‑xxw2).
Added per‑route logging for Google Cloud Functions and introduced `Reply.prototype.mediaType` for easier content‑type handling.
Fixed trailer state clearing when removing all trailers and corrected requestCompleted handling to use null instead of undefined.