- Updated and expanded documentation, including client abort detection and numerous ecosystem plugin guides
- Fixed bugs such as type support for instance.has, content‑type parser removal behavior, schema serializer checks, 408 on client timeout, and onReady hook crashes
- Replaced native errors with @fastify/errors for improved error handling
v4.13.0
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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.