This codemod converts reply.res moved to reply.raw.

This codemod removes app.use() and the use of middleware is no longer supported.

This recipe is a set of codemods that will help migrate to Fastify 4.

This codemod wrap your routes in a plugin

This codemod declares the optional parameters explicitly.

This codemod introduces the exposeHeadRoutes: false option to avoid automatic HEAD route exposure, while keeping manually defined HEAD routes intact.

Before

This codemod helps to improve error reporting in route definitions, route registration is now synchronous, so if you specify an onRoute hook in a plugin, you should now use await.register()