This codemod updates fastify.register to use return instead of done, reflecting changes in Fastify v5 for asynchronous plugin registration.

This recipe provides a set of codemods designed to assist with migrating to Fastify 5. Each codemod addresses specific changes and enhancements introduced in Fastify 5.

This codemod updates the Fastify logger configuration by renaming the logger option to loggerInstance, in line with Fastify v5 changes.

This codemod updates the reply.trailer method to use an async function for handling trailers, aligning with Fastify v5's support for asynchronous operations in trailers.

This codemod updates reply.redirect by placing the status code as the second argument, as per Fastify v5 conventions.

This codemod converts reply.getResponseTime() to reply.elapsedTime, reflecting changes in Fastify v5 for retrieving response time.

This codemod updates references from req.connection to req.socket, reflecting changes in Fastify v5's request handling.

This codemod enhances the schema definition for query strings by converting it to the full object schema format, adding properties and required fields.

This codemod transforms fastify.decorateRequest with static objects into the new Fastify v5 pattern using a getter function.

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

Before

This codemod turns reply.sent = true into reply.hijack(), updating to the new Fastify v5 method for handling manual responses.

This codemod highlights the shift in how routes with dynamic parameters should be referenced in fastify.hasRoute in Fastify v5.

This codemod turns fastify.listen(8000) into fastify.listen({ port: 8000 }), reflecting the highlights of the migration from the old listen method signature to the new object-based approach in Fastify v5.

Before

This codemod turns req.params.hasOwnProperty('name') into Object.hasOwn(req.params, 'name'), reflecting the new Fastify v5 approach to property checking.

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