5.7.0

What's Changed

• docs: Improved firebase serverless guide about process remaining stuck by @alexandercerutti in https://github.com/fastify/fastify/pull/6380
• docs: update migration guide with date-time breaking change by @craftsman01 in https://github.com/fastify/fastify/pull/6110
• chore: remove test file by @Eomm in https://github.com/fastify/fastify/pull/6384
• feat: speed up loading with custom compiler by @Eomm in https://github.com/fastify/fastify/pull/6383
• docs: replace all instances of twitter.com with x.com by @cseas in https://github.com/fastify/fastify/pull/6355
• docs: correct logger option in example by @inyourtime in https://github.com/fastify/fastify/pull/6391
• docs: fix links by @Shriti507 in https://github.com/fastify/fastify/pull/6394
• chore: skip unnecessary object creation by @Eomm in https://github.com/fastify/fastify/pull/6400
• docs: Update JSON Schema link in documentation by @jon23d in https://github.com/fastify/fastify/pull/6402
• docs(ecosystem): add fastify-ses-mailer by @KaranHotwani in https://github.com/fastify/fastify/pull/6395
• docs: add security note about validation errors in response by @mcollina in https://github.com/fastify/fastify/pull/6407
• docs: add security threat model by @mcollina in https://github.com/fastify/fastify/pull/6406
• chore: update onboarding and offboarding instructions by @Eomm in https://github.com/fastify/fastify/pull/6403
• fix: set status code before publishing diagnostics error channel by @tt-a1i in https://github.com/fastify/fastify/pull/6412
• fix: use JSON.stringify in onBadUrl for proper escaping by @mcollina in https://github.com/fastify/fastify/pull/6420
• chore: fix type test by @mrazauskas in https://github.com/fastify/fastify/pull/6418
• docs: improve Validation-and-Serialization.md by @twentytwo777 in https://github.com/fastify/fastify/pull/6423
• test: skip IPv6 test if its support is not present by @LiviaMedeiros in https://github.com/fastify/fastify/pull/6428
• test: fix test when localhost has multiple addresses by @LiviaMedeiros in https://github.com/fastify/fastify/pull/6427
• docs: add security warning for requestIdHeader by @mcollina in https://github.com/fastify/fastify/pull/6425
• docs(ecosystem): add elements-fastify by @rohitsoni007 in https://github.com/fastify/fastify/pull/6416
• chore: Bump actions/dependency-review-action from 4.8.1 to 4.8.2 by @dependabot[bot] in https://github.com/fastify/fastify/pull/6433
• chore: Bump markdownlint-cli2 from 0.18.1 to 0.20.0 by @dependabot[bot] in https://github.com/fastify/fastify/pull/6436
• chore: Bump @types/node from 24.10.4 to 25.0.3 in the dev-dependencies-typescript group by @dependabot[bot] in https://github.com/fastify/fastify/pull/6435
• fix(ts): Align routerOptions defaultRoute types with runtime by @AnkanMisra in https://github.com/fastify/fastify/pull/6392
• fix(types): require send() payload when Reply type is specified by @tt-a1i in https://github.com/fastify/fastify/pull/6432
• fix: ajv options type validation by @gianmarco27 in https://github.com/fastify/fastify/pull/6437
• docs: add non-vulnerability examples to threat model by @RafaelGSS in https://github.com/fastify/fastify/pull/6431
• feat: implement conditional request logging by @kibertoad in https://github.com/fastify/fastify/pull/5732
• docs(sponsor): add serpapi by @Eomm in https://github.com/fastify/fastify/pull/6443
• perf: use native WebStream API instead of Readable.fromWeb wrapper by @mcollina in https://github.com/fastify/fastify/pull/6444

Full Changelog: https://github.com/fastify/fastify/compare/v5.6.2...v5.7.0