- Updated core dependencies (undici, light) and added ecosystem plugins (fastify dynareg, fastify guard, Grant) with new core team members.
- Improved type safety and error handling (generic RouteHandler return type, custom schema error formatting) and fixed bugs (setNotFoundHandler return, content‑length handling, unreachable branch).
- Refreshed documentation, restored ESLint config, and reached 100% test coverage for the request module.
v3.4.0
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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.