- - Breaking changes: middleware no longer bundled (requires fastify‑express or middie), schema substitution now uses $ref, setSchemaCompiler/Resolver replaced by setValidatorCompiler, preParsing and content‑type parser signatures updated,...
- - New features: added connectionTimeout and keepAliveTimeout options, async/await support for plugins, ability to throw plain objects as errors.
- - Deprecations: old middleware support removed, previous hook signatures and request.req/reply.res deprecated, modifyCoreObjects option eliminated.
v3.0.0
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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.