- Updated documentation for hooks, early hints, server, ecosystem, and content-type parser; added benchmark workflow triggered by label.
- Added and fixed TypeScript definitions (http2SessionTimeout, missing typings for encapsulated hooks) and corrected handling of thrown non‑Error values.
- Removed the `engines` field from package.json.
v3.18.1
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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.