- Breaking: route 404 errors are now routed to the dedicated 404 handler.
- Feature: added shared schemas, support for send() and TypeScript logger option, plus improvements to TypeScript types.
- Docs: added Fastify help repo, Oracle plugin to ecosystem, enhanced reply.serializer docs, IPv4/IPv6 listen tip, and simplified testing documentation.
v0.42.0
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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.