- Migrated most test files from tap to the built‑in node:test runner and standardized file naming conventions.
- Added hook name to timeout error messages, updated TypeScript signatures (addHttpMethod, node: prefix for built‑ins, removed FastifyRequest.connection) and bumped secure‑json‑parse to v3.0.1 for security.
- Fixed a crash when the Host header is missing, tightened test assertions, applied various lint and documentation fixes across README, LTS docs, and plugin listings.
v5.2.0
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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.